Method for preparing middle size or oligo-glucomannan using radiation method for degrading plump konnjaku fine powder

A technology of konjac glucomannan and konjac fine powder, applied in the direction of oligosaccharides, etc., can solve the problems of complex process, complicated separation and purification process, etc., and achieve the effect of simple process, high degradation rate and low investment

Inactive Publication Date: 2007-07-11
FARM PROD PROCESSING & NUCLEAR AGRI TECH INST HUBEI ACAD OF AGRI SCI
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Problems solved by technology

However, these methods all have complicated processes. For example, the chemical method needs to add reaction substances, and the separation and purification process is more complicated; the physical method mainly uses microwave and ultraviolet methods, and there is also the problem of adding chemical reagents such as hydrogen peroxide; currently the most important method is enzymatic hydrolysis. The degradation rate is high, up to 75%, and the substrate concentration is high, up to 20%. Glucomannan oligosaccharide powder products can be obtained by spray drying, but there are enzyme solutions, enzymatic hydrolysis, desalination, decolorization, drying, etc. The process is more complex

Method used

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  • Method for preparing middle size or oligo-glucomannan using radiation method for degrading plump konnjaku fine powder

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Effect test

Embodiment 1

[0023] Embodiment 1: Konjac fine powder is fully swollen with water under stirring, and the weight ratio of konjac fine powder and water is 1:40. After swelling, it is irradiated with cobalt-60 gamma rays with an absorbed dose of 6kGy. After irradiation, it is left to stand for 1.5 hours. The non-degradable matter settles to the bottom of the container, and the supernatant is released from the pipe at the middle and lower opening of the container to obtain the product. The product yield was 90.1% after analysis. The product is packaged in a hard container, sealed, sterilized in boiling water at 100°C, and stored at room temperature (usually room temperature) for a period of 24 months.

Embodiment 2

[0024] Embodiment 2: Konjac fine powder is fully swollen with 5 times the weight of water under stirring, and the pH value is adjusted with hydrochloric acid or sodium hydroxide, and the pH value is controlled within a range of 4.5±0.5. After swelling, it is irradiated with x-rays, and the absorbed dose is 4kGy. filter. The filtrate is packaged in a food flexible packaging bag, sealed, heat sterilized, and has a shelf life of 15 months at room temperature.

Embodiment 3

[0025] Embodiment 3: Konjac fine powder is fully swollen with 60 times the weight of water under stirring, and the pH value is adjusted with hydrochloric acid or sodium hydroxide, and the pH value is controlled within a range of 6±0.5. After swelling, it is irradiated with electron rays, and the absorbed dose is 6kGy. filter. The filtrate is the product. The product yield was 89.5% after analysis. The product is packaged in a food flexible packaging bag, sealed, heat sterilized, and has a shelf life of 18 months at room temperature.

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Abstract

The invention discloses a making method of middle and low glucomannan polysaccharide liquid through irradiating, decomposing and bulking konjak powder, which comprises the following steps: bulking konjaku flour through water completely; ionizing and irradiating to degrade glucomannan; stewing; sedimenting; filtering to remove non-degraded slag to obtain the product; sealing the food through flexible bag or hard glass container; sterilizing; setting the molar rate of konjaku flour and water at 15-60 with pH value at 3-9; obtaining the adsorbent of ionizing irradiation at 3-6; irradiating under normal temperature through Co-60 gamma ray or X-ray or electronic ray.

Description

technical field [0001] The invention relates to the agricultural application of nuclear technology and belongs to the field of radiation processing of agricultural products, in particular to a method for producing functional meso- and oligosaccharides by using konjac fine powder as a raw material by irradiation. Background technique [0002] Konjac meso-oligosaccharides are the degradation products of konjac glucomannan. According to animal experiments and clinical studies, konjac oligosaccharides are very effective in promoting the growth of bifidobacteria, and can effectively improve the structure of intestinal flora, and its performance and effect are better than lactulose, soybean oligosaccharides and galactosyl Transfer oligosaccharides. Konjac oligosaccharides also have the functions of preventing and treating hyperlipidemia, reducing blood lipid, anti-oxidation, and enhancing immune function. The feeding of young animals shows that mannan oligosaccharides can signif...

Claims

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Application Information

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IPC IPC(8): C07H3/06C08B37/02
Inventor 林若泰程薇张光阳张金木夏和舟陈玉霞周国全熊光权何建军曾汉庭叶丽秀
Owner FARM PROD PROCESSING & NUCLEAR AGRI TECH INST HUBEI ACAD OF AGRI SCI
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