Analysis on microorganism index, main enzymes and organic acids of leaven food
In order to understand the microorganism compositions of natural fermentation leaven food with different raw materials,and evaluate the physical-chemical index,microorganism index,main enzyme activity and organic acids components,the amount of yeast,lactic acid bacteria and acetic acid bacteria was detected.In this paper,the content of total acid and soluble solid,and the microorganism index of commercially available leaven food were detected.At the same time,the activity of protease,lipase,α-amylase and superoxide dismutase was determined,the organic acids was analyzed with high performance liquid chromatography.Results showed that there were yeast,lactic acid bacteria and acetic acid bacteria in leaven in the fermentation period.The activity of main enzymes of the commercially available leaven food was low.The main organic acids of commercially available leaven food were oxalic acid,malic acid,lactic acid and acetic acid.In conclusion,the quality of commercially available leaven food was not uniform.And the low enzyme activity was incompatible with the propaganda.This work could provide data reference for obtaining a correct view of leaven food and comprehending the leaven food quality.
国家科技期刊平台
NSTL
万方数据
维普
