Abstract:

This paper researched on beer waste yeast aimed at getting trehalose which extracted by distilled water. Contrast analysis and multiple linear regressions were used to optimize the technology parameters by microwave assisted extracting in beer waste yeast. The optimal technological parameters were dosage liquor rate at 1∶30, microwave treatment time at 3 min, microwave power at 600 W, diffusion temperature at 100 ℃,diffusion time at 3.5 h, and the yield of trehalose reached up to 9.24%. Engineering regression model of extracting trehalose from waste beer yeast was set up.

Key words: food processing, beer waste yeast, microwave, trehalose, regression model