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首页> 外文期刊>Biotechnology Progress >Ultrasound-assisted dilute acid hydrolysis of tea processing waste for production of fermentable sugar
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Ultrasound-assisted dilute acid hydrolysis of tea processing waste for production of fermentable sugar

机译：超声辅助茶加工废稀酸水解生产可发酵糖

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Lignocellulosic materials that are the most abundant plant biomass in the world have the potential to become sustainable sources of the produced value added products. Tea processing waste (TPW) is a good lignocellulosic source to produce the value added products from fermentable sugars (FSs). Therefore, the present study is undertaken to produce FSs by using ultrasound-assisted dilute acid (UADA) and dilute acid (DA) hydrolysis of TPW followed by enzymatic hydrolysis. UADA hydrolysis of TPW was optimized by response surface methodology (RSM) at maximum power (900 W) for 2 h. The optimum conditions were determined as 50 degrees C, 1:6 (w/v) solid:liquid ratio, and 1% (w/v) DA concentration, which yielded 20.34 g/L FS concentration. Furthermore, its DA hydrolysis was also optimized by using RSM for comparison and the optimized conditions were found as 120 degrees C, 1:8 solid:liquid ratio, and 1% acid concentration, which produced 25.3 g/L FS yield. Even though the produced sugars with UADA hydrolysis are slightly less, but it can provide significant cost saving due to the lower temperature requirement and less liquid consumption. Besides, enzymatic hydrolysis applied after pretreatments of TPW were very more economic than the conventional enzymatic hydrolysis in the literature due to shorter time requiring. In conclusion, ultrasound-assisted is a promising technology that can be successfully applied for hydrolysis of biomass and can be an alternative to the other hydrolysis procedures and also TPW can be considered as suitable carbon source for the production of value-added products like biofuels, organic acids, and polysaccharides. (c) 2016 American Institute of Chemical Engineers Biotechnol. Prog., 32:393-403, 2016
机译：木质纤维素材料是世界上最丰富的植物生物量，有潜力成为生产增值产品的可持续来源。茶加工废料（TPW）是从发酵糖（FSs）生产增值产品的良好木质纤维素来源。因此，本研究通过使用TPW的超声辅助稀酸（UADA）和稀酸（DA）水解，然后进行酶促水解来生产FS。通过响应面方法（RSM）在最大功率（900 W）下持续2 h对UADA水解TPW进行了优化。最佳条件确定为50摄氏度，固液比1：6（w / v）和1％（w / v）DA浓度，可产生20.34 g / L FS浓度。此外，还通过使用RSM进行了比较，以优化其DA水解，发现优化条件为120摄氏度，固液比为1：8，酸浓度为1％，产生了25.3 g / L FS产量。即使使用UADA水解生产的糖略少，但由于温度要求较低和液体消耗较少，因此可以显着节省成本。此外，由于需要更短的时间，TPW预处理后进行的酶水解比文献中的常规酶水解经济得多。总而言之，超声辅助技术是一种很有前途的技术，可以成功地应用于生物质的水解，并且可以替代其他水解程序，TPW也可以被认为是生产增值产品（如生物燃料）的合适碳源，有机酸和多糖。 （c）2016美国化学工程师学会生物技术学会。 Prog。，32：393-403，2016

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