一株酸性果胶酶产生菌的筛选及酶学特性分析

打开文本图片集

Screening and Enzymatic Characterization Analysis of an Acid Pectinase-Producing Bacteria

FUJinling，MA Mengyao，LANWeishen， ZENGLiqing，SUNJiaman，LI Shuai* （School of Chemistry and Environmental Science， Xiangnan University， Chenzhou 423oo0， China）

Abstract： In this paper， a strain of pectinase-producing bacteria was screened from the soil by Congo red method，and the enzymaticcharacteristics ofthe pectinase produced by pectin were studied.The results showed that afilamentous fungus with pectinase-producing ability was screened from the soil，and it was identified as Aspergilus niger after molecular biological identification. Under the conditions of 50∘C and pH=4.0 ， the pectinase enzyme activity produced by this bacterium was the best. When the pH value is 3.0 to 5.0， its stability is good.

Keywords： pectinase; Aspergillus niger; enzymatic properties

果胶酶来源丰富，植物、动物和微生物均具有果胶酶合成能力。（剩余3934字）