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Method for cleanly preparing starch containing abundant flavones and comprehensively utilizing radix puerariae resource

A technology of starch and kudzu root, applied in biofuels, fermentation, etc., can solve the problems of kudzu root flavonoid loss, waste water, kudzu root resource waste, etc., achieve the effects of reducing production energy consumption, improving economic benefits, and eliminating large energy consumption

Inactive Publication Date: 2011-09-14
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the current use of kudzu root resources, which only pay attention to the utilization of single-component starch or flavonoids, resulting in waste of kudzu root resources, especially kudzu root starch production is a powder washing process that relies on the degree of raw material disintegration and hydraulic action to dissolve starch free, which not only produces a large amount of Wastewater, and the shortcomings of causing a large loss of Pueraria flavonoids, a method for the clean preparation of starch rich in Pueraria flavonoids and the comprehensive utilization of Puerariae resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: 1000g of fresh Pueraria lobata raw material is cut into 10-20cm blocks after removing impurities and cleaning, and then placed in a steam explosion tank for steam explosion treatment for 4min under the condition of a steam pressure of 0.5Mpa; The material is dried, and then passed through a 80-mesh sieve to divide the material into two parts: a starch-rich part and a residue part containing a part; the above-mentioned starch-rich part is further pulverized, and then passed through a 120-mesh sieve to obtain starch rich in Pueraria flavonoids And the residue part; mix the obtained residue part, add glucoamylase at a ratio of 100U per gram of dry steam explosion material, add cellulase at a ratio of 30U per gram of dry steam explosion material, and keep saccharification and enzymatic hydrolysis in a water bath at 55°C for 30min Saccharification and enzymatic hydrolysis; the material after enzymatic hydrolysis was cooled to 37°C, and 0.1% (NH 4 ) 2 SO 4 , 0...

Embodiment 2

[0023] Take 1000g of fresh kudzu root raw material, remove impurities, wash and cut into 10-20cm blocks, then place it in a steam explosion tank for steam explosion treatment for 3min under the condition of steam pressure 0.8Mpa; dry the material after steam explosion treatment, and then The material is divided into two parts through a 80-mesh sieve: a starch-rich part and a residue part containing a part; the above-mentioned starch-rich part is further pulverized, and then passed through a 120-mesh sieve to obtain a starch and a residue part rich in Pueraria flavonoids; Mix the obtained residues, add glucoamylase at a rate of 150 U per gram of dry steam-exploded material, add cellulase at a rate of 30 U per gram of dry steam-exploded material, and heat-preserve saccharification enzymatic hydrolysis in a water bath at 60°C for 30 minutes; Cool the material after enzymolysis to 37°C, add 0.25% nitrogen source (NH 4 ) 2 SO 4 , 0.03% KH 2 PO 4 , 0.025% MgSO 4 ·7H 2 O, 0.05%...

Embodiment 3

[0025] Take 1000g of fresh kudzu root raw material, remove impurities, wash and cut into 10-20cm blocks, then place it in a steam explosion tank and steam explosion treatment for 2.5min under the condition of steam pressure 0.9Mpa; dry the material after steam explosion treatment, Then pass through a 60-mesh sieve to divide the material into two parts: a starch-rich part and a part-containing residue; further pulverize the above-mentioned starch-rich part, and then pass through a 140-mesh sieve to obtain the starch and the residue part rich in Pueraria flavonoids ; Mix the obtained residues, add glucoamylase at a rate of 10-50 U per gram of dry steam-exploded material, add cellulase at a rate of 35 U per gram of dry steam-exploded material, and heat-preserve saccharification enzymatic hydrolysis in a water bath at 50°C for 40 minutes for saccharification Enzymolysis; the material after enzymolysis was cooled to 39°C, and 0.03% nitrogen source (NH 4 ) 2 SO 4 , adding citric a...

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Abstract

The invention provides a method for cleanly preparing arrowroot flour containing abundant radix puerariae flavones by utilizing a pollution-free steam explosion wall-breaking technology and a simple mechanical separation method and the like, which aims at the defects such as waste of the radix puerariae resource and the like resulting from pollution of a large amount of waste water in the flour washing process and loss of the radix puerariae flavones during the washing process particularly in the production course of the arrowroot flour in the event that only starch or the flavones are concerned when the radix puerariae resource is utilized. In the method, the arrowroot flour is prepared under low-pressure steam of 0.5-1.0Mpa within short time for 2-4 minutes by utilizing a wall-breaking method, thus the method has the beneficial effects of eliminating the defect of more energy consumption in the process for preparing the arrowroot flour from components containing 10-15% of rich fiberby a dry method, shortening process cycle, having certain pre-curing effect on the starch, enhancing instant solubility of the arrowroot flour containing abundant flavones and improving application value of the arrowroot flour; and in order to avoid the process of further separating a small amount of the starch with high energy consumption, solid state fermentation is carried out on residual materials containing a part of the starch, the fiber and the like after the arrowroot flour is separated so as to produce chemical products such as ethanol, citric acid and the like, thus achieving the purpose of high-value comprehensive utilization of the radix puerariae resource by a direct microbial utilization mode.

Description

technical field [0001] The invention belongs to the field of resource utilization of agricultural products, and in particular relates to a method for clean preparation of puerarin-rich starch and comprehensive utilization of puerarin. Background technique [0002] Radix Pueraria (Radix Pueraria) is the underground root of the Pueraria genus. It is a perennial leguminous vine. It was first recorded in "Shen Nong's Materia Medica", and it was listed as a middle grade. Because it is rich in starch and flavonoids, it was listed by the Ministry of Health as "both Food and Drugs" list. In recent years, modern medicine at home and abroad has carried out in-depth and systematic research on the medicinal components and pharmacological effects of Pueraria lobata. exuberant. [0003] Pueraria is rich in starch (commonly known as kudzu root), and the food made of kudzu root has high transparency. In terms of syneresis and storage, especially if kudzu root flavonoids are retained in ku...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08B30/04C12P19/14C12P7/10C12P7/16C12P7/48C12P7/56
CPCY02E50/16Y02E50/10
Inventor 陈洪章付小果汪卫东
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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