A low‐cost recycling system for the production of pectinase was built to improve the yield and quality of Muzao date juice and to reduce production costs. An Aspergillus niger strain, Gyx086, was selected from 20 A. niger strains on potato agar plates containing Muzao date residues, and the strain was used to produce an enzyme cocktail with high pectinase activity using Muzao date residues as the medium. The high pectinase activity level was therefore used in the production of Muzao date juice. Under optimized enzymatic hydrolysis conditions, a date juice yield of 92.88% was obtained, which was 11% higher than the control, and was not significantly different from a commercial preparation. Further storage trials indicated that the clarity, viscosity, storage stability, and soluble solid content could also be greatly improved by enzymatic treatment. These results suggested that the cheap experimental preparation could effectively replace the commercial preparation used for the production of date juice. This is the first systematic report detailing the production of Muzao date juice using a cheap and effective pectinase cocktail, which could promote the development of the date juice industry. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd

中文翻译：

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低成本回收果胶酶以提高黑曲霉对枣枣汁的产量和质量

建立了用于生产果胶酶的低成本回收系统，以提高木枣汁的产量和质量并降低生产成本。的黑曲霉菌株，Gyx086，由20选择黑曲霉菌株在含有木枣枣残基的马铃薯琼脂平板上分离，并用木枣枣残基作为培养基用于生产具有高果胶酶活性的酶混合物。因此，在果枣汁生产中使用了高果胶酶活性水平。在优化的酶水解条件下，获得的枣汁收率为92.88％，比对照高11％，与市售制剂没有显着差异。进一步的储存试验表明，通过酶处理也可以大大提高透明度，粘度，储存稳定性和可溶性固形物。这些结果表明，廉价的实验制剂可以有效地代替用于生产枣汁的商业制剂。这是第一个系统报告，详细介绍了使用廉价有效的果胶酶鸡尾酒生产木枣枣汁的方法，这可能会促进枣汁行业的发展。©2019年化学工业协会和John Wiley＆Sons，Ltd