Use of agricultural wastes as substrate for the production of bioethanol can help to solve environmental problems caused by inadequate discharge of waste. The production of bioethanol by Saccharomyces cerevisiae using pea hull aqueous extract as a substrate was evaluated in this work. Response surface methodology was employed to study the effect of different parameters such as inoculum concentration (3-7%), fermentation time (24-71 h) and pH (4.4, 4.8 and 5.2) on the production of bioethanol. Results revealed that highest bioethanol yield of 1.65% occurred at 6.8% inoculum concentration; 71 h of fermentation time in the medium with initial pH 5.2. The study highlights that pea hull aqueous extract can be utilized for bioethanol production with extended fermentation times.

中文翻译：

---

使用酿酒酵母从豌豆壳水提物中提取生物乙醇作为新型底物

使用农业废弃物作为生产生物乙醇的基质可以帮助解决由于废弃物排放不足而引起的环境问题。在这项工作中，评估了以豌豆壳水提取物为底物的酿酒酵母对生物乙醇的生产。采用响应面方法研究了接种量（3-7％），发酵时间（24-71 h）和pH（4.4、4.8和5.2）等参数对生物乙醇生产的影响。结果表明，接种物浓度为6.8％时，最高生物乙醇产量为1.65％。在初始pH 5.2的培养基中发酵71小时。该研究强调，豌豆壳水提物可用于延长发酵时间的生物乙醇生产。