Kumari Kajal, Nagar Sushil, Goyal Sakshi, Maan Sonu, Sindhu Meena, Singh Renu, Kumar Vinod
Department of Biochemistry, College of Basic Sciences and Humanities, CCS Haryana Agricultural University, Hisar, Haryana 125004 India.
Department of Microbiology, College of Basic Sciences and Humanities, CCS Haryana Agricultural University, Hisar, Haryana 125004 India.
Indian J Microbiol. 2023 Sep;63(3):352-360. doi: 10.1007/s12088-023-01097-2. Epub 2023 Sep 4.
In the present investigation, xylooligosaccharides were produced from wheat bran and wheat bran extracted xylan through enzymatic hydrolysis using xylanase from novel KS1. Xylooligosaccharides/reducing sugars production from wheat bran was found maximum (374 mg/g) when 4.0% of wheat bran was treated with 375 units (IU/mL) of KS1 xylanase at pH 6.0 and incubated at 50 °C for 24 h of incubation. In case of wheat bran extracted xylan 419 mg/g of xylooligosaccharides were produced when 3% of extracted xylan was incubate for 8 h. Analysis of the enzymatic hydrolysate through high performance liquid chromatography equipped with refractive index detector showed the presence of xylose, xylopentose and xylohexose. The decrease in pH with 1.0% dose of xylooligosacchaides produced from extracted xylan hydrolysis using KS1 xylanase showed more decrease with (6.72 to 5.94) followed by (6.71 to 6.15) and (6.71 to 6.41). In case of increase in optical density both wheat bran and wheat bran extracted xylan generated xylooligosaccharides exhibited similar pattern i.e., > > .
在本研究中,使用来自新型KS1的木聚糖酶通过酶促水解从麦麸和麦麸提取的木聚糖中生产低聚木糖。当4.0%的麦麸在pH 6.0下用375单位(IU/mL)的KS1木聚糖酶处理,并在50℃孵育24小时时,发现从麦麸中产生的低聚木糖/还原糖产量最高(374毫克/克)。对于麦麸提取的木聚糖,当3%的提取木聚糖孵育8小时时,产生了419毫克/克的低聚木糖。通过配备示差折光检测器的高效液相色谱对酶解产物进行分析,结果表明存在木糖、木戊糖和木己糖。使用KS1木聚糖酶从提取的木聚糖水解产物中产生的1.0%剂量的低聚木糖使pH值下降,其中下降幅度最大的是(从6.72降至5.94),其次是(从6.71降至6.15)和(从6.71降至6.41)。在光密度增加的情况下,麦麸和麦麸提取的木聚糖产生的低聚木糖呈现出相似的模式,即 > > 。