Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for synergistically preparing low-cadmium rice protein peptide by utilizing composite membrane and electrochemistry

A rice protein peptide and electrochemical technology, applied in the field of rice protein peptide and reclaimed water reuse, can solve the problems of low cadmium protein, unpreparable, unusable by-products, etc., and achieve the effect of strong practicability

Active Publication Date: 2017-07-28
JIANGNAN UNIV
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention innovatively overcomes the technical problem that the by-products in the rice starch production process cannot be used, solves the problem that protein and cadmium are tightly bound, and cannot prepare low-cadmium protein, retains part of the trace elements in the protein peptide, and prepares high-purity rice protein peptide

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for synergistically preparing low-cadmium rice protein peptide by utilizing composite membrane and electrochemistry
  • Method for synergistically preparing low-cadmium rice protein peptide by utilizing composite membrane and electrochemistry
  • Method for synergistically preparing low-cadmium rice protein peptide by utilizing composite membrane and electrochemistry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Sampling of rice starch production wastewater: Take the wastewater produced in the rice starch production process, wherein the solid content is 4.0%, the conductivity is 1050 μs / cm, the protein content is 6.5% on a dry matter basis, and the cadmium ion content is 0.5mg / kg.

[0034] (2) Primary ultrafiltration: Pass the wastewater through a porous ultrafiltration membrane to remove ash, organic matter, and colloidal small molecule substances. The pore size is 0.05 μm, the operating pressure is 0.1 MPa, and the temperature of the feed liquid before entering the membrane is 15 ° C; The solid content of the ultrafiltration membrane concentrate is 2.5%, the electrical conductivity is 1800 μs / cm, and the protein content is 10.0% based on dry matter.

[0035] (3) Enzymolysis: Add papain to the concentrated solution in the ultrafiltration membrane in step (2) for enzymolysis, stir and react at 50°C for 4h, the added amount is 1‰ of the dry matter, and the stirring speed is...

Embodiment 2

[0043] (1) Sampling of rice starch production wastewater: Take the wastewater produced in the rice starch production process, wherein the solid content is 7.0%, the electrical conductivity is 1325μs / cm, the protein content is 9.3% in dry matter, and the cadmium ion content is 1.2mg / kg.

[0044] (2) Primary ultrafiltration: pass the wastewater through a porous ultrafiltration membrane to remove ash, organic matter, and colloidal small molecule substances. The pore size is 0.52 μm, the operating pressure is 0.31 MPa, and the temperature of the feed liquid before entering the membrane is 30 ° C; The solid content of the ultrafiltration membrane concentrate is 4.2%, the electrical conductivity is 2125 μs / cm, and the protein content is 15.2% based on dry matter.

[0045] (3) Enzymolysis: Add cathepsin to the concentrated solution in the ultrafiltration membrane in step (2) for enzymolysis, stir and react at 60°C for 2h, the added amount is 3‰ of the dry matter, and the stirring sp...

Embodiment 3

[0053] (1) Sampling of rice starch production wastewater: Take the wastewater produced in the rice starch production process, wherein the solid content is 10.0%, the conductivity is 1600μs / cm, the protein content is 12% on a dry matter basis, and the cadmium ion content is 1.8mg / kg.

[0054] (2) Primary ultrafiltration: the waste water is passed through a porous ultrafiltration membrane to remove ash, organic matter, and small colloidal molecules. The solid content of the membrane concentrate is 6.0%, the electrical conductivity is 2450 μs / cm, and the protein content is 20.5% based on dry matter.

[0055] (3) Enzymolysis: Add trypsin to the concentrated solution in the ultrafiltration membrane in step (2) for enzymolysis, stir and react at 70°C for 6h, the added amount is 5‰ of the dry matter, and the stirring speed is 150rpm.

[0056] (4) Secondary ultrafiltration: pass the enzymatic solution through the hollow fiber ultrafiltration membrane again, and retain starch, fat an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Conductivityaaaaaaaaaa
Apertureaaaaaaaaaa
Conductivityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for synergistically preparing a low-cadmium rice protein peptide by utilizing a composite membrane and electrochemistry. The method comprises the following specific steps: (1) taking wastewater produced after rice starch production; (2) removing small molecules and large molecules step by step by two-times ultrafiltration and enzymolysis; (3) electrochemisty, namely dissociating a protein-cadmium complex; (4) concentration: removing soluble small molecule substances; (5) sterilization and spray drying, namely obtaining the rice protein peptide; and (6) reverse osmosis, namely realizing reuse of reclaimed water. The technical problem that byproducts can not be used in the rice starch production process is overcome, the problem that the protein and cadmium are bond tightly and can not prepare the low-cadmium protein is solved, partial trace elements in the protein peptide are retained, the high-purity rice protein peptide is prepared, the reuse of reclaimed water is realized, and the method has the characteristics of high efficiency, energy saving, and strong practicality.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a method for preparing low-cadmium rice protein peptides by utilizing the synergistic effect of a composite membrane and an electrochemical technology, and recovering water samples for reclaimed water reuse. Background technique [0002] At present, there are many domestic rice starch production enterprises, but the by-products in the processing process cannot be utilized. At the same time as wastewater is discharged, it is also necessary to increase the cost of water treatment before discharge up to the standard. Due to serious soil pollution, cadmium ions (0.2mg / kg) exceeding the national standard limit are adsorbed in rice, and these cadmium ions exist in the form of chelated state with the protein in rice endosperm and are closely combined. Therefore, the wastewater in the rice starch production process contains a large amount of rice protein bound to cadmium ions, a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A23J3/14A23J3/34
CPCA23J3/14A23J3/346A23V2002/00A23V2250/55A23V2300/12A23V2300/38
Inventor 于秋生於慧利陈天祥陈林李珍妮冯伟朱熹
Owner JIANGNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com