According to German beer expert Professor Back, this paper divides beer harmful bacteria into five levels, namely: obligate beer harmful bacteria, latent beer harmful bacteria, indirect beer harmful bacteria, indicative microorganisms and latent microorganisms, which affect the taste of beer.

When the wort is boiled to the second half or before the end, use a clean conical flask to sample 250-300ml, put it at room temperature in the saccharification room, and let it cool down to room temperature. Observe the wort in the conical flask. Or muddy precipitation, the wort in the bottle is evenly distributed with a large number of aggregates, which can be flake, flocculent, etc.

How to improve the feeding method of saccharification when the quality of malt is poor?1. Malt comprehensive enzyme activity is low. Compensation or coordination in the mashing process must be considered, otherwise it will affect the mashing quality

The taste of beer is an important quality characteristic of beer. Although it varies with different types of beer, it has an important position in quality evaluation.Beer taste is one of the important indicators to measure beer. It must be consistent with the type of beer, and sometimes have certain