【Abstract】 yeast　through　enzymatic　hydrolysis　and　extraction.　It　isa　quality,　natural,　nutritive　and　functional　product.　It　is　essential　reaction　materials　of　aminoacides　and　peptides　in　Maillard　reaction.　In　the　recent　years,　people　pay　more　and　more　attentionto　the　study　of　the　application　of　yeast　essence　to　hot-processing　flavor,　and　gradually　spread　it.更多还原