Two-way permeable membrane, solid-state baijiu fermentation tank and solid-state baijiu fermentation method

Abstract

The invention relates to a two-way permeable membrane, a solid-state baijiu fermentation tank and a solid-state baijiu fermentation method, and relates to the field of baijiu brewing. The two-way permeable membrane comprises a filter membrane, and the aperture of the filter membrane is 0.45-10 micrometers. The two-way permeable membrane is used for separating fermented grains for fermentation from pit mud, and can ensure that nutrients required by growth, reproduction and metabolism of microorganisms can freely pass through but the fermented grains and the pit mud cannot pass through. The solid-state baijiu fermentation tank comprises a pit, the pit mud is arranged on the inner wall of the pit, and the two-way permeable membrane is laid on the pit mud. The solid-state baijiu fermentation tank is specially used for solid-state baijiu fermentation. By means of the solid-state baijiu fermentation method using the solid-state baijiu fermentation method, material exchange between the fermented grains and the pit mud can be achieved, normal fermentation is guaranteed, the pit mud can be protected, direct contact between the fermented grains and the pit mud is avoided, the quality of basic liquor is improved, and the labor intensity is reduced.

Description

technical field [0001] The invention relates to the field of liquor brewing, in particular to a two-way permeable membrane and its application, a solid-state liquor fermentation tank, and a solid-state liquor fermentation method. Background technique [0002] The fermentation method of traditional solid-state fermented liquor (including Luzhou-flavor type, Phoenix-flavor type, special type, etc.) is to add bad grains to the grain, and put it into the cellar for multi-strain fermentation. There is pit mud on the inner wall of the pit pool. During the fermentation process, the fermented grains and the pit mud have a long-term contact. Microorganisms, nutrients required by microorganisms, and metabolites produced by microbial metabolism include ethanol, lipids, acids, and proteins. , enzymes, and other substances can be exchanged back and forth between the fermented grains and the pit mud. The exchange process of substances plays the role of nourishing the pit with the fermente...

AI Technical Summary

Problems solved by technology

[0003] 1. During the fermentation production process, the fermented grains are in direct contact with the pit mud, which makes the whole production process unhygienic;

[0004] 2. During the process of leaving the fermented grains from the cellar, the pit mud is easily mixed into the fermented grains for distillation, resulting in a muddy smell in the wine body, which seriously affects the quality of the base wine

During distillation, it is necessary to sort out the pit mud mixed in the fermented grains, which is time-consuming and laborious;

[0005] 3. After the fermented grains are out of the cellar, because the pit mud layer lacks the protection of the fermented grains and is exposed to the air, the surface of the pit mud is easily infected with bacteria, resulting in mildew, blackening and other undesirable phenomena. Before the pit, it is necessary to remove the mold spots on the pit mud, which increases the labor intensity of production

[0006] 4. During the process of adding fermented grains to the pit, the remaining fermented grains on the pit mud are easily mixed into the pit mud, causing the pit mud to fall off or age, affecting the quality of the pit mud

Therefore, it is time-consuming and labor-intensive to clean up the excess fermented grains attached to the pit mud every time it enters the cellar;

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