JP3631466B2 - Cultured laver treatment agent, cultured laver treatment solution, and cultured laver treatment method - Google Patents
Cultured laver treatment agent, cultured laver treatment solution, and cultured laver treatment method Download PDFInfo
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- JP3631466B2 JP3631466B2 JP2002023235A JP2002023235A JP3631466B2 JP 3631466 B2 JP3631466 B2 JP 3631466B2 JP 2002023235 A JP2002023235 A JP 2002023235A JP 2002023235 A JP2002023235 A JP 2002023235A JP 3631466 B2 JP3631466 B2 JP 3631466B2
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- 241000206607 Porphyra umbilicalis Species 0.000 title claims description 45
- 238000000034 method Methods 0.000 title claims description 18
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 62
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 39
- 239000003795 chemical substances by application Substances 0.000 claims description 35
- 239000002253 acid Substances 0.000 claims description 32
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- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 7
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 7
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Diphosphoinositol tetrakisphosphate Chemical compound OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims description 7
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- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 7
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 claims description 7
- 235000019253 formic acid Nutrition 0.000 claims description 7
- 239000001630 malic acid Substances 0.000 claims description 7
- 235000011090 malic acid Nutrition 0.000 claims description 7
- 229940107700 pyruvic acid Drugs 0.000 claims description 7
- 239000011975 tartaric acid Substances 0.000 claims description 7
- 235000002906 tartaric acid Nutrition 0.000 claims description 7
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 claims description 5
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 5
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 5
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 claims description 5
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- 235000006408 oxalic acid Nutrition 0.000 claims description 5
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- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 5
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 claims description 5
- 150000007513 acids Chemical class 0.000 claims description 3
- 238000009360 aquaculture Methods 0.000 claims description 3
- 244000144974 aquaculture Species 0.000 claims description 3
- 241000206608 Pyropia tenera Species 0.000 description 21
- 230000000694 effects Effects 0.000 description 18
- 239000000243 solution Substances 0.000 description 17
- 241000195493 Cryptophyta Species 0.000 description 14
- 201000010099 disease Diseases 0.000 description 14
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 14
- 241000206761 Bacillariophyta Species 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 8
- 241000233866 Fungi Species 0.000 description 8
- 238000009472 formulation Methods 0.000 description 8
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- 238000002360 preparation method Methods 0.000 description 6
- 239000008213 purified water Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
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- 235000019270 ammonium chloride Nutrition 0.000 description 4
- 150000007524 organic acids Chemical class 0.000 description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 4
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 238000010306 acid treatment Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 235000011087 fumaric acid Nutrition 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 235000002949 phytic acid Nutrition 0.000 description 3
- 239000000467 phytic acid Substances 0.000 description 3
- 229940068041 phytic acid Drugs 0.000 description 3
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
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- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
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- 239000004323 potassium nitrate Substances 0.000 description 2
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- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 2
- 229910052939 potassium sulfate Inorganic materials 0.000 description 2
- 235000011151 potassium sulphates Nutrition 0.000 description 2
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- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
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- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 108010082495 Dietary Plant Proteins Proteins 0.000 description 1
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 1
- 239000004472 Lysine Substances 0.000 description 1
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 1
- 208000031888 Mycoses Diseases 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 235000021120 animal protein Nutrition 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
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- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
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- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
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- Edible Seaweed (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は養殖海苔用処理剤並びに養殖海苔用処理液及び養殖海苔の処理方法に関し、その目的は、処理液のｐＨ値が高い場合でも、赤腐れ病菌、白腐れ病菌、壺状菌などの養殖海苔の病害や珪藻などの雑藻を駆除することができ、周囲の環境や海苔葉体に悪影響を与えることがない養殖海苔用処理剤並びに養殖海苔用処理液及び養殖海苔の処理方法を提供することにある。
【０００２】
【従来の技術】
海苔の養殖には、海苔葉体や海苔網にアオノリ、アオサ、珪藻などの雑藻や病害菌類が付着して、海苔葉体の成長や胞子の付着を妨げたり、また白腐れ病、赤腐れ病、壺状菌病などの病害が発症したりして、海苔の養殖に甚大な被害を与えている。
【０００３】
従来、このような雑藻類を駆除して病害の発症を予防するための海苔用処理剤及び処理方法に関する技術としては、例えば、特公昭５６−１２６０１号公報、特公昭６０−３１４５１号公報、特開平９−２０１１８０号公報に記載のものが知られている。
【０００４】
特公昭５６−１２６０１号公報には、炭素数１〜４の飽和脂肪族モノカルボン酸、炭素数２〜４の飽和又は不飽和ジカルボン酸、グリコール酸、乳酸、酒石酸、リンゴ酸、クエン酸のうちの一種以上の有機カルボン酸を有効成分とする海苔用処理剤が記載されている。
特公昭６０−３１４５１号公報には、海苔や海苔が付着した養殖具を、有機酸を０．３〜１５重量％含み、且つｐＨが１．０〜４．０に調整された処理液に浸漬させることにより、雑藻、病害の駆除、予防を行う海苔の養殖方法が記載されている。
特開平９−２０１１８０号公報には、海水に無機塩類と酸とを加えて、比重を１．００１〜１．０６０に調整し、且つｐＨを０．５〜３．０に調整した海苔用処理剤が記載されている。
【０００５】
【発明が解決しようとする課題】
上記の海苔用処理剤や処理方法は、いずれも有効成分として有機酸を含有するとともに、ｐＨを酸性域に調整した酸処理剤を使用する技術である。
これの酸処理剤は、ｐＨ値が低いほど、優れた効果が得られるために、通常の場合、ｐＨ１．８以下に調整されて使用されることが多い。しかしながら、酸処理剤は、このように低いｐＨ値に調整されて使用されるために、周囲の環境に与える影響が極めて大きかった。また海苔葉体に与える影響も大きく、場合によっては海苔葉体の成長を阻害してしまう場合があった。
また酸処理剤のｐＨ値を高くすれば、周囲の環境や海苔葉体に対する影響を軽減することができるが、珪藻などの駆除効果が低下してしまうという問題があった。
【０００６】
本発明は、処理液のｐＨ値が高い場合でも、赤腐れ病菌、白腐れ病菌、壺状菌などの養殖海苔の病害や珪藻などの雑藻を駆除することができ、周囲の環境や海苔葉体に悪影響を与えることがない養殖海苔用処理剤並びに養殖海苔用処理液及び養殖海苔の処理方法を提供することにある。
【０００７】
【課題を解決するための手段】
即ち、請求項１に係る発明は、有効成分として、乳酸を９重量％以上２７重量％未満、リン酸を０〜１２重量％、クエン酸、リンゴ酸及び酒石酸からなる群から選択される一種以上の酸成分を１０〜２５重量％含有してなることを特徴とする養殖海苔用処理剤に関する。
請求項２に係る発明は、塩酸、メタリン酸、ポリリン酸、硫酸、硝酸、フマール酸、グルコン酸、マレイン酸、マロン酸、アクリル酸、クロトン酸、シュウ酸、コハク酸、酢酸、ピルビン酸、プロピオン酸、ギ酸、グルタル酸及びフィチン酸からなる群から選択される一種以上の酸成分が含有されてなり、乳酸以外の酸成分の合計の含有量が５０重量％以下であることを特徴とする請求項１に記載の養殖海苔用処理剤に関する。
請求項３に係る発明は、有効成分として、乳酸を０．０９重量％以上０．２７重量％未満、リン酸を０〜０．１２重量％、クエン酸、リンゴ酸及び酒石酸からなる群から選択される一種以上の酸成分を０．１〜０．２５重量％含有していることを特徴とする養殖海苔用処理液に関する。
請求項４に係る発明は、塩酸、メタリン酸、ポリリン酸、硫酸、硝酸、フマール酸、グルコン酸、マレイン酸、マロン酸、アクリル酸、クロトン酸、シュウ酸、コハク酸、酢酸、ピルビン酸、プロピオン酸、ギ酸、グルタル酸及びフィチン酸からなる群から選択される一種以上の酸成分が含有されてなり、乳酸以外の酸成分の合計の含有量が０．５重量％以下であることを特徴とする請求項３に記載の養殖海苔用処理液に関する。
請求項５に係る発明は、前記請求項１又は２に記載の養殖海苔用処理剤を、海水で希釈してなることを特徴とする養殖海苔用処理液に関する。
請求項６に係る発明は、ｐＨが２．０〜３．５に調整されてなることを特徴とする請求項３乃至５のいずれかに記載の養殖海苔用処理液に関する。
請求項７に係る発明は、前記請求項３乃至６のいずれかに記載の養殖海苔用処理液に、海苔又は海苔が付着した海苔網などの養殖具を所要時間接触させることを特徴とする養殖海苔の処理方法に関する。
【０００８】
【発明の実施の形態】
以下、本発明に係る養殖海苔用処理剤並びに養殖海苔用処理液及び養殖海苔の処理方法について説明する。本発明に係る養殖海苔用処理剤（以下、単に処理剤という。）は有効成分として乳酸を含有する。乳酸の含有量は、処理剤全量中、９重量％以上２７重量％未満、好ましくは１０〜２０重量％とされる。この理由は、乳酸の含有量が９重量％未満の場合、有効成分の含有量が少ないために、養殖海苔の病害や雑藻などを駆除、予防する十分な効果が得られず、また２７重量％を超える場合、養殖海苔の病害や雑藻などを駆除、予防する十分な効果が得られるが、海苔葉体に悪影響を与えることがあるために、いずれの場合も好ましくないからである。
【０００９】
また、本発明に係る処理剤は、乳酸以外の酸成分を含有する。乳酸以外の酸成分を含有する理由は、処理剤を実際に使用する場合、後述するように海水で希釈して養殖海苔用処理液として使用するわけであるが、この際の養殖海苔用処理液のｐＨを調整する目的や病害駆除効果の向上の為に配合される。また酸成分を含有することで、海水の持ち込みや汚れによる酸濃度の低下によるｐH上昇に対して緩衝作用を発揮して安定した効果を発揮する製剤とすることができる。
乳酸以外の酸成分の含有量は特に限定されないが、処理剤全量中、５０重量％以下、好ましくは０．１〜４０重量％、より好ましくは０．１〜３０重量％とされる。この理由は、乳酸以外の酸成分の含有量が５０重量％を超える場合、効果と傷害のバランスが悪くなったり、溶解できなくなったり、コストが高くなったり、好ましくないからである。
【００１０】
用いることができる乳酸以外の酸成分は、特に限定されないが、無機酸、有機酸、有機燐酸などを例示することができ、無機酸としては、塩酸、リン酸、メタリン酸、ポリリン酸、硫酸、硝酸などを例示することができる。有機酸としては、リンゴ酸、クエン酸、フマール酸、グルコン酸、マレイン酸、マロン酸、酒石酸、アクリル酸、クロトン酸、シュウ酸、コハク酸、酢酸、ピルビン酸、プロピオン酸、ギ酸、グルタル酸等を例示することができる。有機燐酸としては、フィチン酸などを例示することができる。
乳酸以外の酸成分は、上記したうちのなかから一種のみを選択して使用してもよく、また二種以上を選択して使用しても構わない。
本発明では、乳酸以外の酸成分として、リン酸を０〜１２重量％、クエン酸、リンゴ酸、酒石酸を１０〜２５重量％用いることが好ましい。
尚、乳酸以外の酸成分として酢酸、ピルビン酸、プロピオン酸、ギ酸、グルタル酸等を使用すると、短時間の処理では病害や雑藻を駆除する高い効果が得られるが、長時間の処理では海苔葉体に傷害を与える場合がある。従って、乳酸以外の酸成分としては、酢酸、ピルビン酸、プロピオン酸、ギ酸、グルタル酸以外の酸成分を使用することが望ましい。
【００１１】
さらに、本発明では、以下の述べるような成分を適宜任意に配合することができる。
本発明に係る処理剤には、溶解助剤を含有させることができる。溶解助剤を含有させる場合、その含有量は特に限定されないが、０〜５０重量％以下、好ましくは０〜３０重量％以下とされる。
【００１２】
また本発明に係る処理剤には、無機塩類を併用することができる。無機塩類を併用することで、特に壺状菌による病害や雑藻類の処理効果が向上するために、有効成分の含有量を低減することができる。また海苔に対する傷害を低減することができる。
用いられる無機塩類としては、アルカリ金属、アルカリ土類金属、アンモニウム塩類、鉄塩類等を例示することができる。具体的には、塩化ナトリウム、塩化マグネシウム、塩化カルシウム、塩化カリウム、硫酸ナトリウム、硫酸マグネシウム、硫酸カリウム、硫酸アンモニウム、硝酸ナトリウム、硝酸カリウム、硝酸マグネシウム、硝酸カルシウム、硫酸鉄、硝酸鉄などを例示することができる。
尚、無機塩類を添加する場合、後述するように処理剤を希釈して得られる処理液の比重を、１．０３〜１．２０、更には１．０３〜１．１３の範囲に調整することが好ましい。この理由は、比重が１．０３未満の場合、無機塩類を添加することによる効果が発揮されにくく、また比重が１．２０を超える場合、比重が高くなりすぎて海苔を傷める可能性があるからである。
【００１３】
以上説明した本発明に係る処理剤は、実際の海苔処理の際には、必要に応じて海水等で希釈されて、本発明に係る養殖海苔用処理液（以下、単に処理液という。）として使用される。処理剤の希釈は、処理方法或いは海水の温度等に応じて適宜調整すればよいが、通常の場合、有効成分である乳酸の濃度が、処理液全量中、０．０９重量％以上０．２７重量％未満、好ましくは０．１０〜０．２０重量％となるように、海水等で希釈すればよい。この理由は、乳酸の含有量が０．０９重量％未満の場合、養殖海苔の病害や珪藻などの雑藻を駆除、予防する十分な効果が得られず、また０．２７重量％以上含有すると、海苔葉体に悪影響を与える場合があるために、いずれの場合も好ましくないからである。
また乳酸以外の酸成分は、処理液全量中、０．５重量％以下、好ましくは０．００１〜０．４重量％、より好ましくは０．１〜０．３重量％とされる。この理由は、乳酸以外の酸成分の含有量が０．５重量％を超える場合、効果と傷害のバランスが悪くなったり、溶解できなくなったり、コストが高くなったり、好ましくないからである。
【００１４】
さらに本発明に係る処理液のｐＨは特に限定されないが、２．０〜３．５、好ましくは２．０〜３．０に調整される。この理由はｐＨが２．０未満の場合、海苔葉体や周囲の環境に悪影響を与える場合があるために、また３．５を超える場合、養殖海苔の病害や珪藻などの雑藻を駆除、予防する十分な効果が得られ難いために、いずれの場合も好ましくないからである。
【００１５】
尚、処理剤中に含有した成分の溶解性向上と析出防止のために、処理剤に溶解助剤を添加することができる。
【００１６】
さらに本発明に係る処理液は、必要に応じて栄養成分を添加することができる。用いられる栄養成分としては、塩化アンモニウム、硝酸アンモニウム、燐酸アンモニウム、硫酸アンモニウムなどのアンモニウム塩、硝酸カリウム、燐酸カリウム、硫酸カリウム等のカリウム塩、硝酸ナトリウム、燐酸ナトリウム、硫酸ナトリウム等のナトリウム塩、グリシン、グルタミン酸、リジンなどのアミノ酸、植物性タンパク分解物、動物性タンパク分解物などの分解液を例示することができる。
尚、前述の栄養成分は、希釈する前の処理剤に予め配合しておくこともできる。
【００１７】
以上説明した本発明に係る処理液を使用して養殖海苔を処理する方法は、処理液に、海苔又は海苔が付着した海苔網などの養殖具を所要時間接触させる従来と同様の処理方法で構わない。例えば、漬け込み処理といわれる方法では、前記処理液を船内の処理液槽などの容器に収容し、海中から引き上げた海苔又は海苔が付着した養殖具を処理液に浸漬する。処理液への海苔の浸漬時間は、海苔の生育状態や珪藻、その他の雑藻や病害の状況、或いは有効成分の種類、濃度、処理液のｐＨ、更には処理時の温度等に応じて、適宜調整すれば良い。通常の場合であれば、２〜１５分、好ましくは３〜１０分間、より好ましくは３〜５分間程度浸漬すればよい。この理由は、２分間未満の処理では、雑藻や病害を駆除、予防する十分な効果が得られず、また１５分を超えて処理をすると、海苔葉体に悪影響を与える場合があるために、いずれの場合も好ましくないからである。
【００１８】
以下、本発明に係る養殖海苔用処理剤の処方例を示す。尚、配合量は重量％である。
＜配合例１＞
クエン酸（結晶）２５ｇ、（７５％）リン酸１６ｇ、（８０％）乳酸１２ｇ、（３５％）塩酸１ｇを精製水４６ｇに添加し溶解、均一に混合して製剤とした。
【００１９】
＜配合例２＞
クエン酸（結晶）２５ｇ、（７５％）リン酸１６ｇ、（８０％）乳酸２０ｇ、（３５％）塩酸１ｇを精製水３８ｇに添加し溶解、均一に混合して製剤とした。
【００２０】
＜配合例３＞
クエン酸（結晶）２５ｇ、（７５％）リン酸１６ｇ、（８０％）乳酸２５ｇ、（３５％）塩酸１ｇを精製水３３ｇに添加し溶解、均一に混合して製剤とした。
【００２１】
＜配合例４＞
クエン酸（結晶）１８ｇ、（８０％）乳酸１２ｇ、塩化アンモニウム２．０ｇ、（４８％）水酸化ナトリウム水溶液１．０ｇを精製水６７ｇに添加し溶解、均一に混合して製剤とした。
【００２２】
＜配合例５＞
クエン酸（結晶）１８ｇ、（８０％）乳酸２０ｇ、塩化アンモニウム２．０ｇ、（４８％）水酸化ナトリウム水溶液１．０ｇを精製水５９ｇに添加し溶解、均一に混合して製剤とした。
【００２３】
＜配合例６＞
クエン酸（結晶）１８ｇ、（８０％）乳酸２５ｇ、塩化アンモニウム２．０ｇ、（４８％）水酸化ナトリウム水溶液１．１ｇを精製水５３．９ｇに添加し溶解、均一に混合して製剤とした。
【００２４】
＜試験例１＞
上記の配合例１〜６の処理剤を、海水で１００倍希釈して処理液を調製した。これに、珪藻が付着した塩化ビニル板と赤腐れ羅病葉体を５分間浸漬後、海水で洗浄した。これを新たな海水に戻し、試験例１と同様の方法で珪藻の駆除効果と赤腐れ駆除効果及び海苔葉体への影響を評価した。結果を表１に記載する。
【００２５】
【表１】
【発明の効果】
以上詳述した如く、本発明に係る養殖海苔用処理剤並びに養殖海苔用処理液及び養殖海苔の処理方法は、処理液のｐＨ値が高い場合でも、赤腐れ病菌、白腐れ病菌、壺状菌などの養殖海苔の病害や珪藻などの雑藻を駆除することができ、周囲の環境や海苔葉体に悪影響を与えることがない。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a treatment agent for cultured nori, a treatment solution for cultured nori and a method for treating cultured nori, the purpose of which is to cultivate red rot fungi, white rot fungi, fungi, etc., even when the pH of the treatment solution is high Provided are a cultured laver treatment agent, a cultured laver treatment solution, and a cultured laver treatment method that are capable of combating laver diseases and other algae such as diatoms and that do not adversely affect the surrounding environment and laver leaf bodies. There is.
[0002]
[Prior art]
In nori culture, miscellaneous algae such as Aonori, Aosa, and diatoms and noxious fungi adhere to the laver leaves and laver net, preventing the growth of laver leaves and spores, and white rot and red rot. Diseases such as illness and fungal disease have developed, causing serious damage to nori culture.
[0003]
Conventionally, as a technique relating to a nori treatment agent and a treatment method for controlling such miscellaneous algae and preventing the onset of diseases, for example, Japanese Patent Publication No. 56-12601, Japanese Patent Publication No. 60-31451, One described in Japanese Laid-Open Patent Application No. 9-201180 is known.
[0004]
Japanese Patent Publication No. 56-12601 includes a saturated aliphatic monocarboxylic acid having 1 to 4 carbon atoms, a saturated or unsaturated dicarboxylic acid having 2 to 4 carbon atoms, glycolic acid, lactic acid, tartaric acid, malic acid, and citric acid. A processing agent for laver containing at least one organic carboxylic acid as an active ingredient is described.
In Japanese Patent Publication No. 60-31451, nori or a cultured device with laver attached is immersed in a treatment solution containing 0.3 to 15% by weight of an organic acid and having a pH adjusted to 1.0 to 4.0. A method for cultivating seaweed that eliminates and prevents miscellaneous algae and diseases is described.
Japanese Patent Application Laid-Open No. 9-20180 discloses a seaweed treatment in which inorganic salts and acids are added to seawater, the specific gravity is adjusted to 1.001 to 1.060, and the pH is adjusted to 0.5 to 3.0. Agents are described.
[0005]
[Problems to be solved by the invention]
The above-mentioned treatment agent for laver and the treatment method are techniques that use an acid treatment agent that contains an organic acid as an active ingredient and has a pH adjusted to an acidic range.
Since the acid treatment agent has a superior effect as the pH value is lower, it is often used after being adjusted to a pH of 1.8 or less. However, since the acid treating agent is used after being adjusted to such a low pH value, the influence on the surrounding environment was extremely large. Moreover, the influence which it has on a laver leaf body is also large, and the growth of a laver leaf body might be inhibited depending on the case.
Further, if the pH value of the acid treatment agent is increased, the influence on the surrounding environment and the laver leaf can be reduced, but there is a problem that the effect of removing diatoms and the like is reduced.
[0006]
The present invention is capable of eliminating diseases of cultured laver such as red rot fungus, white rot fungus, and fungi, and other algae such as diatoms, even when the pH value of the treatment solution is high, and the surrounding environment and laver leaves An object of the present invention is to provide a cultured laver treatment agent, a cultured laver treatment solution, and a cultured laver treatment method that do not adversely affect the body.
[0007]
[Means for Solving the Problems]
That is, the invention according to claim 1, as an active ingredient, lactic acid less than 9 wt% or more 27 wt%, phosphoric acid 0-12 wt%, of citric acid, one or more selected from the group consisting of malic acid and tartaric acid It is related with the processing agent for cultured seaweed characterized by including 10-25 weight% of an acid component .
The invention according to claim 2 includes hydrochloric acid, metaphosphoric acid, polyphosphoric acid, sulfuric acid, nitric acid, fumaric acid, gluconic acid, maleic acid, malonic acid, acrylic acid, crotonic acid, oxalic acid, succinic acid, acetic acid, pyruvic acid, propion One or more acid components selected from the group consisting of acid, formic acid, glutaric acid and phytic acid are contained, and the total content of acid components other than lactic acid is 50% by weight or less. It relates to the processing agent for cultured laver according to Item 1 .
Select invention according to claim 3, as active ingredient, lactic acid less than 0.09 wt% or more 0.27% by weight, the phosphoric acid from 0 to 0.12 wt%, from the group consisting of citric acid, malic acid and tartaric acid It is related with the processing liquid for culture nori characterized by containing 0.1-0.25 weight% of 1 or more types of acid components .
The invention according to claim 4 includes hydrochloric acid, metaphosphoric acid, polyphosphoric acid, sulfuric acid, nitric acid, fumaric acid, gluconic acid, maleic acid, malonic acid, acrylic acid, crotonic acid, oxalic acid, succinic acid, acetic acid, pyruvic acid, propion One or more acid components selected from the group consisting of acid, formic acid, glutaric acid and phytic acid are contained, and the total content of acid components other than lactic acid is 0.5% by weight or less. It is related with the processing liquid for culture nori of Claim 3 .
The invention according to claim 5 relates to a cultured laver treatment solution, wherein the cultured laver treatment agent according to claim 1 or 2 is diluted with seawater.
The invention according to claim 6 relates to the treatment solution for cultured laver according to any one of claims 3 to 5 , wherein the pH is adjusted to 2.0 to 3.5.
The invention according to claim 7 is a culture in which a culture tool such as a laver or a laver net to which the seaweed is attached is brought into contact with the treatment solution for aquaculture laver according to any of claims 3 to 6 for a required time. The present invention relates to a method for treating nori.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the treatment agent for cultured nori, the treatment solution for cultured nori and the method for treating the cultured nori according to the present invention will be described. The treatment agent for cultured laver according to the present invention (hereinafter simply referred to as treatment agent) contains lactic acid as an active ingredient. The content of lactic acid is 9% by weight or more and less than 27% by weight, preferably 10 to 20% by weight, based on the total amount of the treatment agent. The reason for this is that when the content of lactic acid is less than 9% by weight, the content of the active ingredient is small, so that it is not possible to obtain a sufficient effect for controlling and preventing the disease or miscellaneous algae of cultured seaweed. If the percentage exceeds 50%, a sufficient effect of controlling and preventing diseases and algae of cultured seaweed can be obtained, but it may adversely affect the laver leaf body, which is not preferable in any case.
[0009]
Moreover, the processing agent which concerns on this invention contains acid components other than lactic acid. The reason for containing an acid component other than lactic acid is that when a treatment agent is actually used, it is diluted with seawater and used as a treatment solution for cultured nori as described later. It is blended for the purpose of adjusting the pH and improving the disease control effect. Moreover, by containing an acid component, it can be set as the formulation which exhibits the buffer effect with respect to the pH rise by the fall of the acid concentration by carrying in of seawater or dirt, and exhibiting the stable effect.
The content of the acid component other than lactic acid is not particularly limited, but is 50% by weight or less, preferably 0.1 to 40% by weight, more preferably 0.1 to 30% by weight in the total amount of the processing agent. This is because when the content of an acid component other than lactic acid exceeds 50% by weight, the balance between the effect and the injury is deteriorated, the dissolution becomes impossible, the cost becomes high, and it is not preferable.
[0010]
Acid components other than lactic acid that can be used are not particularly limited, and examples thereof include inorganic acids, organic acids, and organic phosphoric acids. Examples of inorganic acids include hydrochloric acid, phosphoric acid, metaphosphoric acid, polyphosphoric acid, sulfuric acid, Nitric acid and the like can be exemplified. Organic acids include malic acid, citric acid, fumaric acid, gluconic acid, maleic acid, malonic acid, tartaric acid, acrylic acid, crotonic acid, oxalic acid, succinic acid, acetic acid, pyruvic acid, propionic acid, formic acid, glutaric acid, etc. Can be illustrated. Examples of the organic phosphoric acid include phytic acid.
Only one kind of acid components other than lactic acid may be selected and used from the above, or two or more kinds may be selected and used.
In the present invention, 0 to 12% by weight of phosphoric acid and 10 to 25% by weight of citric acid, malic acid and tartaric acid are preferably used as the acid component other than lactic acid.
In addition, when acetic acid, pyruvic acid, propionic acid, formic acid, glutaric acid, etc. are used as an acid component other than lactic acid, a high effect of controlling diseases and miscellaneous algae can be obtained in a short time treatment, but laver in a long time treatment. It may damage the leaves. Accordingly, it is desirable to use an acid component other than acetic acid, pyruvic acid, propionic acid, formic acid and glutaric acid as the acid component other than lactic acid.
[0011]
Furthermore, in the present invention, the components described below can be arbitrarily blended as appropriate.
The treatment agent according to the present invention can contain a dissolution aid. When the dissolution aid is contained, the content is not particularly limited, but is 0 to 50% by weight or less, preferably 0 to 30% by weight or less.
[0012]
In addition, inorganic salts can be used in combination with the treatment agent according to the present invention. By using inorganic salts in combination, it is possible to reduce the content of the active ingredient, in particular because the disease caused by the fungus and the effect of treating algae are improved. Injuries to seaweed can be reduced.
Examples of inorganic salts used include alkali metals, alkaline earth metals, ammonium salts, iron salts and the like. Specific examples include sodium chloride, magnesium chloride, calcium chloride, potassium chloride, sodium sulfate, magnesium sulfate, potassium sulfate, ammonium sulfate, sodium nitrate, potassium nitrate, magnesium nitrate, calcium nitrate, iron sulfate, and iron nitrate. it can.
In addition, when adding inorganic salts, as described later, the specific gravity of the treatment liquid obtained by diluting the treatment agent should be adjusted to a range of 1.03-1.20, and further 1.03-1.13. Is preferred. The reason for this is that when the specific gravity is less than 1.03, the effect of adding inorganic salts is hardly exhibited, and when the specific gravity exceeds 1.20, the specific gravity becomes too high and may damage the seaweed. It is.
[0013]
The treatment agent according to the present invention described above is diluted with seawater or the like as necessary in the actual laver treatment, and is used as a culture solution for aquaculture laver according to the present invention (hereinafter simply referred to as a treatment solution). used. The dilution of the treatment agent may be appropriately adjusted according to the treatment method or the temperature of the seawater, but in the normal case, the concentration of lactic acid, which is an active ingredient, is 0.09% by weight or more and 0.27% in the total amount of the treatment liquid. What is necessary is just to dilute with seawater etc. so that it may become less than weight%, Preferably it is 0.10-0.20 weight%. The reason for this is that when the content of lactic acid is less than 0.09% by weight, it is not possible to obtain a sufficient effect of eliminating and preventing diseases of cultured seaweed and other algae such as diatoms. This is because in some cases it is not preferable because it may adversely affect the nori leaves.
The acid component other than lactic acid is 0.5% by weight or less, preferably 0.001 to 0.4% by weight, and more preferably 0.1 to 0.3% by weight in the total amount of the treatment liquid. This is because when the content of an acid component other than lactic acid exceeds 0.5% by weight, the balance between the effect and the injury is deteriorated, the dissolution becomes impossible, the cost becomes high, and it is not preferable.
[0014]
Furthermore, the pH of the treatment liquid according to the present invention is not particularly limited, but is adjusted to 2.0 to 3.5, preferably 2.0 to 3.0. The reason for this is that when the pH is less than 2.0, it may adversely affect the laver leaf body and the surrounding environment, and when it exceeds 3.5, the algae such as cultivated laver and diatoms are eliminated. This is because it is not preferable in any case because it is difficult to obtain a sufficient effect for prevention.
[0015]
In addition, in order to improve the solubility of the components contained in the treatment agent and prevent precipitation, a dissolution aid can be added to the treatment agent.
[0016]
Furthermore, the processing liquid which concerns on this invention can add a nutrient component as needed. Nutritional components used include ammonium salts such as ammonium chloride, ammonium nitrate, ammonium phosphate and ammonium sulfate, potassium salts such as potassium nitrate, potassium phosphate and potassium sulfate, sodium salts such as sodium nitrate, sodium phosphate and sodium sulfate, glycine, glutamic acid, Examples of the degradation solution include amino acids such as lysine, vegetable protein degradation products, and animal protein degradation products.
In addition, the above-mentioned nutrient component can also be previously blended with the treatment agent before dilution.
[0017]
The method for treating the cultured nori using the treatment liquid according to the present invention described above may be a treatment method similar to the conventional method in which a culture tool such as a laver or a laver net attached with the nori is in contact with the treatment liquid for a required time. Absent. For example, in a method referred to as a soaking process, the processing liquid is accommodated in a vessel such as a processing liquid tank in a ship, and a seaweed pulled out from the sea or a culture tool attached with nori is immersed in the processing liquid. The immersion time of the seaweed in the treatment liquid depends on the growth state of the seaweed, diatoms, other miscellaneous algae and disease conditions, or the type and concentration of the active ingredient, the pH of the treatment liquid, and the temperature during treatment. What is necessary is just to adjust suitably. In a normal case, it may be immersed for 2 to 15 minutes, preferably 3 to 10 minutes, more preferably about 3 to 5 minutes. The reason for this is that treatment for less than 2 minutes does not provide sufficient effects to eliminate or prevent miscellaneous algae and diseases, and treatment for more than 15 minutes may adversely affect the laver leaves. This is because neither case is preferable.
[0018]
Hereinafter, a prescription example of the processing agent for cultured seaweed according to the present invention will be shown. In addition, a compounding quantity is weight%.
<Formulation example 1>
Citric acid (crystals) 25 g, (75%) phosphoric acid 16 g, (80%) lactic acid 12 g, (35%) hydrochloric acid 1 g were added to 46 g of purified water, dissolved, and mixed uniformly to prepare a preparation.
[0019]
<Formulation example 2>
Citric acid (crystals) 25 g, (75%) phosphoric acid 16 g, (80%) lactic acid 20 g, (35%) hydrochloric acid 1 g were added to 38 g of purified water, dissolved and uniformly mixed to prepare a preparation.
[0020]
<Formulation example 3>
Citric acid (crystal) 25 g, (75%) phosphoric acid 16 g, (80%) lactic acid 25 g, (35%) hydrochloric acid 1 g were added to 33 g of purified water, dissolved and uniformly mixed to prepare a preparation.
[0021]
<Formulation example 4>
Citric acid (crystals) 18 g, (80%) lactic acid 12 g, ammonium chloride 2.0 g, (48%) sodium hydroxide aqueous solution 1.0 g was added to purified water 67 g, dissolved and mixed uniformly to prepare a preparation.
[0022]
<Formulation example 5>
Citric acid (crystals) 18 g, (80%) lactic acid 20 g, ammonium chloride 2.0 g, (48%) sodium hydroxide aqueous solution 1.0 g was added to purified water 59 g, dissolved and mixed uniformly to prepare a preparation.
[0023]
<Formulation example 6>
Citric acid (crystal) 18g, (80%) lactic acid 25g, ammonium chloride 2.0g, (48%) sodium hydroxide aqueous solution 1.1g was added to purified water 53.9g, dissolved and mixed uniformly to make a preparation. .
[0024]
<Test Example 1 >
The treatment agents of the above Formulation Examples 1 to 6 were diluted 100 times with seawater to prepare treatment solutions. A vinyl chloride plate to which diatoms adhered and red rot leaves were immersed for 5 minutes and then washed with seawater. This was returned to fresh seawater, and the diatom control effect, red rot control effect and influence on the laver leaf body were evaluated in the same manner as in Test Example 1. The results are listed in Table 1 .
[0025]
[Table 1]
【The invention's effect】
As described above in detail, the treatment agent for cultured nori, the treatment solution for cultured nori and the treatment method for cultured nori according to the present invention can be used even when the pH value of the treatment solution is high. It can exterminate diseases such as cultured seaweed and other algae such as diatoms, and does not adversely affect the surrounding environment and the laver leaf.
Claims (7)
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| JP2002023235A JP3631466B2 (en) | 2002-01-31 | 2002-01-31 | Cultured laver treatment agent, cultured laver treatment solution, and cultured laver treatment method |
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| JP2002023235A JP3631466B2 (en) | 2002-01-31 | 2002-01-31 | Cultured laver treatment agent, cultured laver treatment solution, and cultured laver treatment method |
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| JP3631466B2 true JP3631466B2 (en) | 2005-03-23 |
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Cited By (2)
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| KR102132585B1 (en) * | 2019-05-23 | 2020-07-10 | 영림화학주식회사 | Nutrient agent and acidic agent for laver farming |
| KR20210097024A (en) * | 2020-01-29 | 2021-08-06 | 공주대학교 산학협력단 | Active Treatment Agent Composition for Simultaneous Control of Olpidiopsis blight and Red-Rot Disease |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4560607B2 (en) * | 2004-03-30 | 2010-10-13 | 国立大学法人佐賀大学 | Nori acid treatment agent |
| JP4923215B2 (en) * | 2005-09-30 | 2012-04-25 | 国立大学法人佐賀大学 | Nori acid treatment agent |
| US20150038333A1 (en) * | 2011-07-26 | 2015-02-05 | Helmholtz Zentrum München Deutsches Forschungszent -Run Für Gesundheit Und | Plant protective composition containing alpha-hydroxy acids |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102132585B1 (en) * | 2019-05-23 | 2020-07-10 | 영림화학주식회사 | Nutrient agent and acidic agent for laver farming |
| KR20210097024A (en) * | 2020-01-29 | 2021-08-06 | 공주대학교 산학협력단 | Active Treatment Agent Composition for Simultaneous Control of Olpidiopsis blight and Red-Rot Disease |
| KR102549525B1 (en) * | 2020-01-29 | 2023-06-30 | 공주대학교 산학협력단 | Active Treatment Agent Composition for Simultaneous Control of Olpidiopsis blight and Red-Rot Disease |
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