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Abstract：
Potato peel waste (PPW) is an underutilized substrate which is produced in huge amounts by food processing industries. Using PPW a feedstock for production of useful compounds can overcome the problem of waste management as well as cost-effective. In present study, potential of PPW was investigated using chemical and thermochemical treatment processes. Three independent variables i.e., PPW concentration, dilute sulphuric acid concentration and liberation time were selected to optimize the production of fermentable sugars (TS and RS) and phenolic compounds (TP). These three process variables were selected in the range of 5-15 g w/v substrate, 0.8-1.2 v/v acid conc. and 4-6 h. Whole treatment process was optimized by using box-behnken design (BBD) of response surface methodology (RSM). Highest yield of total and reducing sugars and total phenolic compounds obtained after chemical treatment was 188.00, 144.42 and 43.68 mg/gds, respectively. The maximum yield of fermentable sugars attained by acid plus steam treatment were 720.00 and 660.62 mg/gds of TS and RS, respectively w.r.t 5% substrate conc. in 0.8% acid with residence time of 6 h. Results recorded that acid assisted autoclaved treatment could be an effective process for PPW deconstruction. Characterization of substrate before and after treatment was checked by SEM and FTIR. Spectras and micrographs confirmed the topographical variations in treated substrate. The present study was aimed to utilize biowaste and to determine cost-effective conditions for degradation of PWW into value added compounds.
摘要：
马铃薯皮废料（PPW）是一种未充分利用的基质，由食品加工行业大量生产。使用PPW作为生产有用化合物的原料可以克服废物管理以及成本效益的问题。在目前的研究中,使用化学和热化学处理工艺研究了PPW的潜力。三个独立变量，即，PPW浓度,选择稀硫酸浓度和释放时间以优化可发酵糖（TS和RS）和酚类化合物（TP）的生产。这三个过程变量在5-15gw/v底物范围内选择，0.8-1.2v/v酸浓度4-6h。采用响应面法（RSM）的Box-behnken设计（BBD）优化了整个处理过程。化学处理后获得的总糖和还原糖以及总酚类化合物的最高产率为188.00、144.42和43.68mg/gds，分别。通过酸加蒸汽处理获得的可发酵糖的最大产量为TS和RS的720.00和660.62mg/gds，分别为5%底物浓度。结果表明，酸辅助高压灭菌处理可能是PPW解构的有效方法。通过SEM和FTIR检查处理前后基材的表征。光谱和显微照片证实了处理过的基材的形貌变化。本研究旨在利用生物废料并确定将PWW降解为增值化合物的经济有效条件。
