JPS6044911B2 - tobacco filter - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in cigarette filters.

Currently, 80% of cancers, which account for the highest mortality rate, are caused by environmental factors, and 90% of these are said to be attributable to chemical factors. Therefore, from the viewpoint of cancer prevention, it is important to capture and remove carcinogenic chemical factors before they come into contact with the human body. By the way, cigarette smoke contains carcinogenic substances such as tar and nicotine, but 3,4-bentsupyrene has a strong carcinogenic effect, and the smoke emitted from one cigarette contains 2 to 12 ng (nanograms) of carcinogenic substances. ) Contains.

For this reason, for the purpose of removing these carcinogenic substances, a cellulose-based filter mainly made of acetyl cellulose has conventionally been attached to the mouthpiece of a cigarette. However, although such a filter can adsorb and remove tar, nicotine, etc. to some extent, it has been difficult to selectively adsorb and remove 3,4-benzpyrene. For this reason, a cigarette filter has been developed in which activated carbon is filled in the middle of a cellulose filter to improve adsorption capacity, but the selective adsorption capacity for 3,4-benzpyrene is almost non-existent. On the other hand, a cigarette filter has been proposed in which a cellulose filter is filled with biopolymer substances such as serum albumin, raw milk whey protein, egg albumin, and yeast nucleic acid. Although a filter filled with such a biopolymer substance has the ability to adsorb 3|4-benzpyrene, its effectiveness is not always sufficiently high. In contrast, the present inventor has conducted extensive research to overcome the above-mentioned problems, and has found that the ability of biopolymer substances to remove carcinogenic substances is effective in the early stage when the carcinogenic substances exhibit their carcinogenic effects. Focusing on the ability to bind to target substances such as proteins and nucleic acids within polymeric substances, we have incorporated spirulina, a biological polymeric substance, into the filter in a layered manner to improve serum albumin and whey protein. We have discovered a cigarette filter that has a much superior ability to selectively adsorb 3,4-benzpyrene compared to conventional cigarette filters filled with 3,4-benzpyrene.

That is, in the present invention, powdered spirulina is contained in a layered form in an amount of 2% by weight or more based on the fibrous filter.

The particle size of the powdered spirulina used in the present invention is coarser than 50 mesh and 16
It is desirable to make it thinner than the mesh.

The reason why the content of spirulina in the filter in the present invention is limited to the above range is that the content is 2% by weight.
This is because if the amount is less than 3,4-benzpyrene, the selective adsorption ability of 3,4-benzpyrene cannot be sufficiently exhibited.

Note that it is desirable that the upper limit of spirulina be about the same weight as the fiber filter. Next, examples of the present invention will be described. As shown in the example diagram, the particle size distribution between the filters 1 and 1 was 8wn in diameter and 100m9 in weight, made of acetyl cellulose with a single fiber of 4 denier and a total fiber of 43,000 denier.
Filled with 100 mg of 50 mesh spirulina powder 2,
The outer peripheries of these were wrapped with paper 3 to produce a cigarette filter 4 with a total length of 17 screens and a diameter of 8 gourds.

The obtained tobacco filter was inserted into the tip of a commercially available cigarette, and the cigarette was ignited using a constant flow type automatic smoker. times, smoking frequency 1 time/minute, smoking length 50Tn! n
Smoke under the following conditions and pass the smoke that comes out from filter 1 to filter 1
It was collected using M-5 (trade name of Toyoguchi Paper). After that, the substances in the smoke are extracted from the smoke through a filter, followed by liquid phase partition extraction, fractionated by two-layer one-dimensional thin layer chromatography, and then analyzed using fluorescence spectroscopy. - The amount of benzpyrene was determined. The results were as shown in the table below. In addition, in the table, 3 and 4 according to conventional tobacco filters are shown.
- Removal rate of benzpyrene, etc. are also listed as a comparative example. As is clear from the above table, the tobacco filter of the present invention has a much better ability to remove 3,4-benzpyrene, which is highly carcinogenic, than the conventional tobacco filter.

As detailed above, according to the present invention, it is possible to provide a cigarette filter that has an extremely high ability to selectively remove 3,4-benzpyrene, which is highly carcinogenic contained in cigarette smoke, and allows safe smoking. be.

[Brief explanation of drawings]

The figure is a sectional view of a cigarette filter showing an embodiment of the present invention. 1... Acetyl cellulose filter 1, 2...
・Spirulina powder, 3...Paper, 4...
Tahani filter first.

Claims (1)

[Claims] 1. A cigarette filter containing 2% or more by weight of powdered spirulina in a layer based on the fibrous filter.