Multi-strain starter propagation process for producing soy sauce by using rice dregs as raw materials

Abstract

The invention belongs to the technical field of the recycling of discarded resources, and provides a new multi-strain starter propagation process for producing soy sauce by using rice dregs as raw materials, which comprises the following process steps of: the multi-strain mixed starter propagation of monascus rubber, aspergillus oryzae, aspergillus niger, solid state fermentation, heat-preserving diluted mesh fermentation, normal-temperature diluted mesh fermentation, heat-preserving after-ripening and the like. In the new process, bean pulp serving as a main raw material in the conventional brewing process is replaced by the rice dregs serving as discarded resources in sugar industry, monosodium glutamate industry and rice vinegar industry, so the production cost of the soy sauce is reduced greatly. Simultaneously, the saccharifying enzyme, neutral protease and acid protease of the prepared yeast rice are higher that those of the yeast rice of the conventional starter propagation, so a new process is opened up for the recycling of the rice dregs and the production of the high-quality soy sauce.

Description

technical field [0001] The invention belongs to the technical field of waste resource regeneration and utilization, and in particular relates to a waste rice dregs resource recycling process in monosodium glutamate industry, sugar industry and rice vinegar industry, and specifically relates to a process for producing new-type soy sauce by using rice dregs as raw materials and multi-species koji making technology. Background technique [0002] my country is a major producer of rice. During the production of starch hydrolyzed sugars such as maltose and glucose or monosodium glutamate, a large amount of rice dregs are discarded or used as crude product feed for breeding, and the price is extremely low. Generally, after 3.3 tons of rice are made into glucose, the rice residue is about 1 ton; producing 1 ton of monosodium glutamate requires about 2 tons of rice. Based on the average annual production capacity of the existing monosodium glutamate factories in the south of about 20...

AI Technical Summary

Problems solved by technology

However, the protein structure in rice dregs is different from that in soybean meal. The protease produced by a single strain of Aspergillus oryzae used in traditional soy sauce brewing is difficult to obtain high amino acid nitrogen.

And the color and luster of using a single strain is lighter, which is difficult for consumers to accept

Images