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Comprehensive utilization method of pumpkin

A technology for pumpkin and pumpkin seeds is applied in the field of preparing pumpkin powder, which can solve the problems of many solution components, viscous chromatography, loading and the like, and achieve the effects of ensuring purity and activity, mild working conditions and simple process

Inactive Publication Date: 2012-11-07
武汉普赛特膜技术循环利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN 101314621A "a pumpkin polysaccharide and its preparation method", which uses hot water extraction, centrifugation, resin column chromatography, concentration, alcohol precipitation, trichloroacetic acid deproteinization, drying, to obtain the product; when the method is extracted with hot water, The solution has many components and is relatively viscous, which will cause a large load on the chromatography

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Wash 50kg of fresh pumpkin, cut into pieces, remove pumpkin seeds, beat; add 150kg of water, stir at 35°C for 0.5h, and centrifuge to obtain supernatant and slag, then repeat water extraction and centrifugation of slag Once again, supernatant and slag A were obtained twice; the supernatant was combined twice, and its pH value was adjusted to 3, left to stand for 1h, and the supernatant and slag were obtained by centrifugation again; this centrifugation was obtained The supernatant was concentrated by nanofiltration membrane under the conditions of P=2.5MPa, T=40°C, and Q=18L / min, and the obtained concentrated solution was spray-dried to obtain 0.439kg of polysaccharide; adding 150kg of water to the slag A, at pH 2. Stir for 1.5h at a temperature of 85°C and centrifuge to obtain the supernatant and slag; pass the supernatant through a microfiltration membrane under the conditions of =0.2MPa, T=50°C, and Q=80L / min to remove impurities , to obtain the filtrate; then the fi...

Embodiment 2

[0033] Wash 50kg of fresh pumpkin, cut into pieces, remove pumpkin seeds, and beat; add 175kg of water, stir at 40°C for 1 hour, and centrifuge to obtain supernatant and slag, then repeatedly extract the slag with water and centrifuge again , to obtain two supernatants and slag A; combine the two supernatants, adjust their pH value to 4, let stand for 1h, and centrifuge again to obtain supernatant and slag; The supernatant was concentrated through a nanofiltration membrane under the conditions of P=3MPa, T=45°C, and Q=20L / min, and the obtained concentrated solution was spray-dried to obtain 0.45kg of polysaccharide; adding 175kg of water to the slag A, at a pH of 1.5 , at a temperature of 90°C, stirred for 2 hours, and centrifuged to obtain the supernatant and slag; the supernatant was removed through a microfiltration membrane under the conditions of =0.3MPa, T=60°C, and Q=90L / min to obtain the filtrate ; Then the filtrate is concentrated through the nanofiltration membrane u...

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Abstract

The invention relates to a comprehensive utilization method of a pumpkin. In the method, added amount of substances is based on weight of the pumpkin; and the pumpkin is taken as a raw material for step-by-step extraction to respectively obtain pumpkin polysaccharide, pectin and pumpkin powder by utilizing a biotechnology and a membrane separation technology. The method comprises the following steps: firstly washing and cutting the pumpkin into blocks, removing seeds, pulping, carrying out water extraction at moderate temperature and centrifugal separation, carrying out acid precipitation on the obtained water extract, concentrating the obtained supernate through a nanofiltration membrane, and spray-drying to obtain the polysaccharide; extracting residues after water extraction by utilizing acid water, carrying out centrifugal separation, removing impurities from the obtained supernate through a microfiltration membrane, concentrating the supernate through a nanofiltration membrane, carrying out acid precipitation on the obtained concentrated solution, carrying out centrifugal separation, and freeze-drying the obtained precipitate to obtain the pectin; spray-drying the supernate to obtain the polysaccharide; and mixing the remaining residues and filtered liquor, grinding by a colloid mill and spray-drying to obtain the pumpkin powder. The comprehensive utilization method has the advantages that effective substances of the pumpkin are fully utilized, and process is simple and feasible, thus being applicable to industrialized production.

Description

technical field [0001] The invention relates to a production method for intensively processing pumpkins by utilizing biotechnology, and mainly relates to a method for extracting pumpkin polysaccharides and pectin from pumpkins and preparing pumpkin powder. Background technique [0002] Pumpkin is a plant of Cucurbitaceae Cucurbita, which has a wide planting area, many varieties and rich resources in my country. The total output of pumpkin in my country is as high as 2.3 million tons every year, accounting for about 30% of the world's total output. Pumpkin contains polysaccharides, pectin, starch, protein, carotene, vitamin B, vitamin C, calcium, phosphorus and other ingredients. It is rich in nutrients, not only has high edible value, but also has a therapeutic effect that cannot be ignored. In recent years, domestic and foreign medical experts and scholars have shown that eating pumpkin can also treat prostatic hypertrophy, prevent prostate cancer, prevent arteriosclerosis,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/06C08B37/00A23L1/212A61P3/06A61P3/10A61P39/00A61P39/06A23L19/00
Inventor 万端极吴正奇徐国念李猷毛波刘锐谢鑫王聪
Owner 武汉普赛特膜技术循环利用有限公司
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