花生蛋白胰蛋白酶水解物对直投式乳酸菌生长的影响

Influence of peanut protein tryptic hydrolyzate on the growth of DVS lactic acid bacteria

在底物质量浓度40 mg/m L、酶底物比1:150(m/m)、pH8.0、水解温度40℃条件下的花生蛋白粉胰蛋白酶水解物作为培养基添加物,37℃培养直投式乳酸菌。研究结果表明,水解物添加浓度0.5%、1%对乳酸菌生长促进作用并不明显,2%、3%添加浓度对其生长有明显促进作用,4%添加浓度对其生长有抑制作用。

Under the conditions of the substrate concentration 40 mg/m L, enzyme substrate ratio 1：150（m/m）, pH 8.0, hydrolysis temperature 40 ℃, the trypsin enzymatic hydrolyzates of peanut protein isolates was used as additives to culture DVS lactic acid bacteria at 37 ℃. The results showed that the infl uence of hydrolyzate on the lactic acid bacteria growth was not obvious at 0.5%, 1%, the added concentration of hydrolyzates were obviously to promote the DVS lactic acid bacteria growth at 2% and 3%, 4% added concentration inhibited on the growth of the lactic acid bacteria, respectively.