Kaushal Jyoti, Khatri Madhu, Singh Gursharan, Arya Shailendra Kumar
Department of Biotechnology, University Institute of Engineering and Technology, Panjab University, Chandigarh, India.
Department of Medical Laboratory Sciences, Lovely Professional University, Phagwara 144411, Punjab, India.
Int J Biol Macromol. 2021 Dec 15;193(Pt B):1350-1361. doi: 10.1016/j.ijbiomac.2021.10.194. Epub 2021 Nov 3.
Xylanase enzyme has been classified as an enzyme belonging to the glycoside hydrolase family. The catalytic action of xylanase is focused on the degradation of xylan, a substrate for this enzyme comprising of a complex arrangement of monosaccharides interlinked with the help of ester and glycosidic bonds. Xylan represents the second most profuse renewable polysaccharide present on earth. Breakage of the β- 1, 4-glycoside linkage in the xylan polymer is what makes xylanase enzyme an important biocatalyst favoring various applications including treatment of pulp for improving paper quality, improvement of bread quality, treatment of lignocelluloses waste, production of xylose sugar and production of biological fuels. Most recently, xylanase has been exploited in the food industry for the purpose of fruit juice clarification. Turbidity caused by the colloidal polysaccharides present in the freshly squeezed fruit juice poses a setback to the fruit juice industry since the commercial product must be clear and free of excess polysaccharides to improve juice quality and storage life. This review gives an overview of the recent advancements made in regards to xylanase enzyme being used commercially with main focus on its role in fruit juice clarification.
木聚糖酶已被归类为属于糖苷水解酶家族的一种酶。木聚糖酶的催化作用主要集中在木聚糖的降解上，木聚糖是该酶的一种底物，由通过酯键和糖苷键相互连接的单糖复杂排列组成。木聚糖是地球上第二丰富的可再生多糖。木聚糖聚合物中β-1,4-糖苷键的断裂使木聚糖酶成为一种重要的生物催化剂，有利于各种应用，包括用于改善纸张质量的纸浆处理、改善面包质量、处理木质纤维素废料、生产木糖以及生产生物燃料。最近，木聚糖酶已被用于食品工业以澄清果汁。新鲜压榨的果汁中存在的胶体多糖引起的浑浊对果汁工业来说是一个挫折，因为商业产品必须清澈且不含过多的多糖以提高果汁质量和储存寿命。本综述概述了木聚糖酶在商业应用方面的最新进展，主要关注其在果汁澄清中的作用。
