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Biofermentation method of foodstuff garbage

A technology for food waste and biological fermentation, applied in the field of biological fermentation of waste, can solve the problems of increasing production cost of commercial enzyme preparations, effective utilization of difficult-to-product fermentation production strains, etc. Effect

Inactive Publication Date: 2010-05-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defects that protein, fat, polysaccharides and other biomacromolecules in food waste are difficult to be directly used by product fermentation production strains and the production cost of commercial enzyme preparations is increased, and a kind of food is provided. Biological Fermentation Method of Garbage

Method used

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specific Embodiment approach 1

[0008] Specific embodiment one: the food waste of this embodiment is biologically fermented according to the following steps: (1) filter the food waste and inoculate Aspergillus niger, then prepare saccharification enzyme koji by solid-state fermentation under the condition of 30~35° C. for 5~6 days; (2) ) adding saccharifying enzyme koji and biological fermentation strains to fresh food waste, and adding tap water of the same quality as fresh food waste to ferment; (3) separating and purifying to obtain the fermentation product.

[0009] The saccharification enzyme koji prepared in step (1) of this embodiment can be used directly without drying.

[0010] This embodiment can be used for fermentative production of organic acids, alcohols, hydrogen and methane, and biological fermentation strains and fermentation conditions can be selected according to the required fermentation products, and existing conventional methods can be used for the separation and purification of fermenta...

specific Embodiment approach 2

[0011] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step (1), after the food waste is filtered dry, it is first crushed into a volume less than 1.5cm 3 particle. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0012] Specific embodiment three: the difference between this embodiment and specific embodiment one is: in the step (1), press the 7%~9% inoculation concentration of food waste quality after filtering to be 10 6 ~10 7 Spores / mL of Aspergillus niger spore suspension. Other steps and parameters are the same as those in Embodiment 1.

[0013] The saccharifying enzyme koji prepared in this embodiment has not been dried and purified, and its saccharifying enzyme activity is 3500-4500 U / g.

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Abstract

The biological food refuse fermenting process includes the following steps: 1. filtering to dry food refuse and inoculating aspergillus niger to ferment for preparing amylase; 2. adding the amylase and biofermenting bacteria to new food refuse to ferment; and 3. separating and purifying to obtain fermented product. The process has saving in resource, high food refuse utilizing rate, high yield offermented product and low production cost.

Description

technical field [0001] The invention relates to a biological fermentation method of garbage. Background technique [0002] Food waste refers to food waste from canteens, restaurants, households, and waste organic matter in the food industry. Food waste is biomass waste with high organic content, mainly including starch, cellulose, protein, etc., which can be reused as biomass energy and occupies a large proportion in municipal solid waste. The recycling of food waste has been highly valued by scientific researchers and government departments. Fermentation to produce acid, alcohol, hydrogen, and methane is the main way of recycling food waste. Because food waste contains biomacromolecules such as protein, fat, polysaccharides, etc., it is difficult to be effectively utilized by fermentation production strains (such as lactic acid bacteria, methane bacteria, etc.); Biosynthesis of polyhydroxyalkanoate (Polyhydroxyalkanoate, PHA) as raw material, after 16 days of anaerobic fe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/56C12R1/225C12R1/685
Inventor 汪群慧王孝强
Owner HARBIN INST OF TECH
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