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Enzymatic Characterization of Pectinex XXL,a Pectinase Produced by Aspergillus niger,and Its Application in Fruit Juice Production

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现代食品科技 2024年第7期40卷 81-88页

作者： ZHU Furong LIANG Xiaomei WEI Zhifu LI Li HE Fengyuan CHENG Zhong college of food and Quality Engineering Nanning UniversityNanning 530200China guangxi bingke food co.ltd. Nanning 530100China

Pectinex XXL,a commercially prepared pectinase,was investigated for its potential application in the fruit juice *** acid was used as the substrate for determining the enzymatic properties of Pectinex XXL using the DNS *** to the results,the optimal pH for Pectinex XXL activity was 4.5,and the enzyme was stable in the pH range of 3.0~*** optimal pH and pH stability range are consistent with those of some tropical and subtropical *** optimal temperature for Pectinex XXL activity was 60℃,and the enzyme remained stable after one hour in a water bath set at 40℃.Additionally,the enzymatic activity was not inhibited in the presence of 1 mmol/L of Na^(+),Mg^(2+),Ba^(2+),co^(2+),Zn^(2+),and Fe^(2+),whereas it was slightly inhibited in the presence of 2 mmol/L of K^(+)and Fe^(2+)and partially inhibited in the presence of 1 and 2 mmol/L of Ca^(2+)and Mn^(2+),demonstrating its good stability in acids and excellent thermal catalytic *** on the above experimental results,depectinization experiments were performed on plantain and cherry tomato juices using different amounts of Pectinex *** one hour reaction with 16 U/mL of the enzyme,the yields of the plantain and cherry tomato juices were substantially increased by 119.03%and 15.97%,respectively,while their light transmittance was remarkably enhanced by 37.65%and 12.35%,***,the enzyme reduced the viscosity of the plantain and cherry tomato juices by 88.29%and 29.50%,*** juice production experiments confirmed that this enzyme can significantly improve the yield and light transmittance of plantain juice,while effectively reducing its *** findings indicate the potential of Pectinex XXL in the industrial production of plantain juice.

关键词： plantain cherry tomato fruit juice Aspergillus niger pectinase

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