Mgeni Shedrack Thomas, Mtashobya Lewis Atugonza, Emmanuel Jovine Kamuhabwa
Department of Biological Science, Mkwawa University College of Education, P.O. Box 2513, Iringa, Tanzania.
Department of Chemistry, Mkwawa University College of Education, P.O. Box 2513, Iringa, Tanzania.
Heliyon. 2024 Sep 19;10(19):e38172. doi: 10.1016/j.heliyon.2024.e38172. eCollection 2024 Oct 15.
The declining oil production stemming from decreasing raw material reserves has clashes with rising demands and has created a supply-demand gap in the overall energy sector. Excessive consumption of fossil fuel oil exacerbates environmental issues, potentially leading to global climate change and increased natural disasters. Consequently, there are efforts in looking for alternate renewable fuel sources. The study included physical pre-treatment, natural hydrolysis, natural fermentation, fermentation of pineapple waste juice using bakery yeast, and subsequent distillation. The pineapple wastes produced juice with 12.67 °Brix and pH range of 3.16-3.18. The present study reports bioethanol production from pineapple waste mixed with bakery yeast ( and pineapple wastes juice without bakery yeast, revealing that the yeast-amended mixture yielded bioethanol with alcohol content of 45 % compared to 36 % from pineapple juice alone. Re-distillation enhanced bioethanol content from 25 % - 45 %-85 % which aligns well with E85 fuel specifications, indicating bioethanol's suitability as fuel. Thus, bioethanol derived from pineapple fruit wastes presents a promising renewable energy solution. This study investigates the production of bioethanol from pineapple waste juice by comparing two methods: one using bakery yeast and the other without yeast. Both methods are conducted at room temperature to evaluate their efficiency and effectiveness in converting pineapple waste juice into bioethanol.
原材料储备减少导致石油产量下降，这与不断增长的需求发生冲突，在整个能源领域造成了供需缺口。化石燃料油的过度消耗加剧了环境问题，可能导致全球气候变化和自然灾害增加。因此，人们正在努力寻找替代可再生燃料来源。该研究包括物理预处理、自然水解、自然发酵、使用面包酵母发酵菠萝废汁以及随后的蒸馏。菠萝废料产出的果汁糖度为12.67°波美度，pH值范围为3.16 - 3.18。本研究报告了用面包酵母混合菠萝废料以及不使用面包酵母的菠萝废汁生产生物乙醇的情况，结果显示添加酵母的混合物产生的生物乙醇酒精含量为45%，而仅用菠萝汁产生的生物乙醇酒精含量为36%。再蒸馏将生物乙醇含量从25%提高到45% - 85%，这与E85燃料规格非常吻合，表明生物乙醇适合作为燃料。因此，由菠萝果实废料衍生的生物乙醇是一种有前景的可再生能源解决方案。本研究通过比较两种方法来探究从菠萝废汁中生产生物乙醇：一种使用面包酵母，另一种不使用酵母。两种方法均在室温下进行，以评估它们将菠萝废汁转化为生物乙醇的效率和效果。
