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Chinese potato glucoprotein product and ultrasonic auxiliary extracting method thereof

A technology for auxiliary extraction and yam sugar, which is applied in the field of development and utilization of medicinal plant products, can solve the problems such as the pulse ultrasonic auxiliary extraction method of yam glycoprotein, which has not been seen, and achieve the effects of inhibiting tumor, regulating immunity and reducing blood sugar.

Inactive Publication Date: 2008-12-10
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to new investigations, there are no research reports or patent publications on the yam glycoprotein pulsed ultrasound-assisted extraction method at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Weigh 1000g of dried yam slices and grind to 40 mesh. Weigh 500g of yam powder, add 20 times of tap water to dissolve, and heat the feed solution to 50°C for ultrasonic-assisted extraction of yam glycoprotein. Ultrasonic-assisted extraction is carried out by applying ultrasonic waves intermittently. The extraction conditions are as follows: extraction time 80 minutes, pulse ultrasonic width 1 s, pulse interval 2 s, material liquid passes through the ultrasonic probe in a circular manner, ultrasonic power is 1.3 kW, and 30% The ethanol precipitation obtained, the yam glycoprotein content in the precipitation that obtains is 67.9% (dry basis), wherein contains neutral glycoprotein 45%, contains acidic glycoprotein 17%. The precipitate is further formulated into yam glycoprotein oral liquid, or dried at low temperature to obtain yam glycoprotein powder.

Embodiment 2

[0015] Weigh 700g dry yam slices and grind to 40 mesh. Weigh 500g of yam powder, add 70 times of tap water to dissolve, and heat the feed solution to 15°C for ultrasonic-assisted extraction of yam glycoprotein. Ultrasonic-assisted extraction is carried out by applying ultrasonic waves intermittently. The extraction conditions are as follows: extraction time 50 minutes, pulse ultrasonic width 3 s, pulse interval 4 s, the material liquid passes through the ultrasonic probe in a circular manner, ultrasonic power is 1.2 kW, with 60% The ethanol precipitation is carried out, and the precipitation is further dried at low temperature to obtain yam glycoprotein powder. The yam glycoprotein content in the product is 63.8% (dry basis), which contains 41% of neutral glycoprotein and 16% of acid glycoprotein.

Embodiment 3

[0017] Weigh 5000g of fresh yam, make a pulp, add tap water 5 times the weight of the yam pulp to the beaten yam, and use ultrasonic-assisted extraction technology to extract the yam glycoprotein. The extraction conditions are: material liquid temperature 30°C, extraction time 20min, The pulse ultrasonic width is 5s, the pulse interval is 6s, the material liquid passes through the ultrasonic probe in a circular manner, the ultrasonic power is 1.5kW, and 80% ethanol is used for precipitation, and the precipitation is dried at low temperature to obtain yam glycoprotein powder. The content of yam glycoprotein in the product is 65.7%. (dry basis), which contains 43% of neutral glycoproteins and 18% of acidic glycoproteins.

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Abstract

The invention relates to the production for health-caring food, in particular to glycoprotein of yam and an ultrasonic auxiliary extraction method thereof. The product contains 60-70% of the glycoprotein of yam. The glycoprotein is a mixed product and the main composition thereof is a neutral glycoprotein composition and an acid glycoprotein composition, respectively with the molecular weight of 89,381Da and 47,412Da and respectively with the proportion in the product of 40-46% and 14-18%. The method of the invention comprises the steps as follows: slicing the dry yam, crushing the yam, pulse ultrasonic auxiliary extracting with water, depositing with ethanol, centrifugal collecting and depositing, drying under low temperature and obtaining the glycoprotein of yam; alternatively, the fresh yam is crushed into slurry and the pulse ultrasonic auxiliary extraction is directly carried out so as to obtain the glycoprotein of yam; the obtained glycoprotein of yam has the effects of regulating immune, tumor inhibition, reducing the blood sugar and the blood lipid, oxidation resistance, anti-aging, etc.

Description

technical field [0001] The invention relates to the field of development and utilization of medicinal plant products, in particular to the production of health food, in particular to a method for ultrasonically assisted extraction of yam glycoprotein. Background technique [0002] Yam contains a lot of starch and protein, vitamins, polysaccharides, glycoproteins, bile bases, allantoin, etc., and its nutritional value is very rich. [0003] Yam has a long history of planting in my country. It is not only a medicinal material, but also a nutritious and healthy vegetable. Henan, Jiangsu, Guangxi and other provinces have abundant yam resources. Yam has a high development and utilization value, but at present, except for some medicinal uses, most of yam is used for fresh food, and there are also a small amount of processed products of yam, but the scale is very small. On the whole, the current level of yam processing is relatively low, the depth of product development is not en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23J1/00A23L1/305A23L33/17
Inventor 马海乐
Owner JIANGSU UNIV
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