Solid compound enzyme for cleaning filtering membrane of draught beer

Abstract

The invention belongs to the field of membrane filtering and relates to a solid compound enzyme for cleaning a filtering membrane of draught beer. The solid compound enzyme comprises the following components in part by weight: 0.5 to 2.0 parts of xylanase, 0.5 to 2.0 parts of beta-glucanase, 0.5 to 2.5 parts of neutral protease, 0.5 to 1.0 part of pectinase, 0.05 to 0.1 part of calcium chloride, and 0.5 to 1.0 part of ethylene diamine tetraacetic acid (EDTA). The solid compound enzyme cleaning agent which degrades membrane obstruction is prepared aiming at the characteristics of the structure and property of the membrane obstruction of the draught beer; and the filtering membrane of the draught beer can be effectively cleaned with the cleaning agent, so that the service life of the membrane is greatly prolonged, filtering cost is reduced, the environmental pollution brought by acid and base used by the cleaning the membrane can be reduced, and the cleaning agent has realistic significance.

Description

technical field [0001] The invention belongs to the field of membrane filtration, and relates to a special cleaning compound enzyme for a low-temperature aseptic membrane filtration system of pure draft beer and a cleaning method thereof. Background technique [0002] In recent years, the pure draft beer market has grown rapidly, and its production process uses low-temperature membrane filtration sterilization technology to replace traditional pasteurization, so that the taste of beer is fresher and purer. Membrane filtration technology is the key core technology in the production of pure draft beer. Filtering beer through a 0.45μm membrane can effectively remove harmful bacteria and some protein polyphenols in the liquor, ensuring the biological and abiotic stability of pure draft beer. In the production of pure draft beer, the membrane flux decreases rapidly after filtering 4000t~6000t beer, and the filter membrane needs to be replaced to meet the filtration requirements. ...

AI Technical Summary

Problems solved by technology

[0003] In the production of most pure draft beer, the traditional membrane cleaning generally follows the following steps: rinse with water after filtration to remove impurities such as protein and hop resin attached to the membrane, and then use hot water, acid, hot water, Rinse with alkali and cold water separately, and finally use hot water to sterilize and empty the backpressure for use. The main components of traditional cleaning agents are strong acids and alkalis, which consume a lot of water, easily cause damage to the membrane, and pollute the environment. Organic substances that clog the membrane Substance removal is not ideal

After filtering about 4000t ~ 6000t beer, the filter membranes of many pure draft beer factories cannot be completely repaired by the above process.