JP3394017B2 - Extraction method of mushroom extract - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for extracting an extract from agaricus bradymril (hereinafter abbreviated as agaricus) in a dry state. 2. Description of the Related Art Conventionally, when extracting an extract from agaricus in a dry state, a hot water extraction method, a so-called decoction method, is generally most often used. [0003] In the hot water extraction method described in the prior art, β-β is extracted by heating and extracting with hot water.
Although it is possible to extract a certain amount of an active ingredient mainly including glucan, there is a problem that cadmium, arsenic, heavy metals and the like originally contained in the mushroom itself are simultaneously extracted into the extract. For reference, an example of an analysis result using dried agaricus as a sample is shown in Table 1. [Table 1] [0005] In order to solve the above-mentioned problems, the present invention carries out a special pretreatment, whereby the active ingredient such as β-glucan can be replaced with a hot water extraction method. Cadmium, arsenic, heavy metals, etc., which are impurities, can be greatly reduced while extraction is not performed. DETAILED DESCRIPTION OF THE INVENTION The method for extracting a mushroom extract according to the present invention is basically such that a dried agaricus body is immersed in water in which water and alcohol are mixed in advance, and a sufficient amount of water is contained in the agaricus. After being in a state, repeated freeze-freezing and thawing repeatedly repeats cell destruction inside the tissue, and then immerses in cold water to extract the extract, which enables efficient extraction of only the active ingredient. It is. The present invention will be described more specifically as follows. First, a dried agaricus material, which is a raw material, is immersed in water in which water and alcohol are mixed in advance, so that a sufficient amount of water is contained in the agaricus. Specifically, it is preferable to give water to the mushroom such that the weight of the dried mushroom increases by 30%. The addition of alcohol to the water is to prevent spoilage and to make the subsequent extraction more effective. Next, the temperature of the dried Agaricus body to which water has been added is gradually lowered, and frozen and frozen once at about -20 ° C. At this time, when the water contained in the mushroom body freezes,
It swells inside the tissue and partially destroys the cells. [0010] Thereafter, the cells are once thawed and then frozen and frozen again, thereby repeatedly destroying the cells inside the tissue. In the present invention, the number of repetitions of freeze-freezing and thawing is not particularly limited, and may be appropriately determined in consideration of the extraction concentration of extract and workability. In general, when food, especially meat or fish is thawed and then frozen again, the taste is greatly reduced because the tissue cells are destroyed and the taste is impaired. To take out the active ingredient from the cell tissue. After repeated freezing and thawing as described above, the extract is immersed in cold water and the extract is extracted without applying heat. In this case, analyzing the dissolution rate of the solid in the solution,
In the case of water at 0 ° C., component extraction almost reaches a peak in 24 hours, and even if left for 24 hours, the amount of solids in the solution does not change. Therefore, 24 hours is considered to be the most efficient extraction time. EXAMPLE A dried agaricus product was immersed in a mixture of water and alcohol to give water to the mushroom so that the weight increased by 30%. Was. Thereafter, the extract was once thawed, frozen and frozen again, and then immersed in cold water at 10 ° C. for 24 hours to extract the extract. Table 2 shows the results of analysis of impurities using the extract as a sample. As can be seen from Table 2, arsenic and heavy metals were not detected, and cadmium was 0.06 ppm.
Met. The qualification standard of cadmium in the WHO (World Health Organization) is 0.2 ppm, so that it is less than 1/3 in light of this standard. [Table 2] As a comparative example, the extract was extracted by a general hot water extraction method. Here, the same amount of agaricus was extracted with hot water using the same amount of water used in the examples. The result of analyzing impurities using the extract as a sample is as shown in Table 3, which is 0.3 ppm of arsenic, 1.1 ppm of heavy metals, and 0.14 ppm of cadmium, demonstrating the superiority of the extraction method of the present invention. Things. [Table 3] In the embodiment, while the impurities are reduced as described above, β-
Glucan is contained in 1.6 g / 100 g (analytical method: enzymatic method), and 1.3 g / 1 obtained by hot water extraction of the comparative example.
More than 100 g (analytical method: enzyme method) could be obtained. As described above, according to the present invention,
The impurities can be extracted as little as possible while efficiently extracting the active ingredient. Therefore, it is possible to expand applications to various fields of food processing.

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Claims (1)

(57) [Claims] [Claim 1] A dried agaricus body is immersed in water in which water and alcohol are mixed in advance, and the inside of the agaricus is sufficiently contained in water. A method for extracting a mushroom extract, comprising repeating cell destruction within a tissue by repeating the process, and then immersing the extract in cold water at 10 ° C. to extract the extract.