Stephen Jain Maria, Saleh Arabi Mohammed
School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, India.
VIT School of Agricultural Innovations and Advanced Learning, Vellore Institute of Technology, Vellore, India.
Heliyon. 2024 Dec 30;11(1):e41532. doi: 10.1016/j.heliyon.2024.e41532. eCollection 2025 Jan 15.
Microbial fermentation of agro-industrial residues is gaining significant traction as a sustainable and economically viable approach in bioprocessing. This study explored lactic acid production from selected agro-industrial residues: pre-treated sugarcane waste, potato peel waste, or milk processing waste with alfalfa pellets using strains of organic origin. Five homo-fermentative strains (VITJ1, VITJ2, VITJ3, VITJ4, and VITJ5) were assessed for compatibility and formed into 15 consortia. VITJ2 showed the highest individual production (147.1 ± 0.26 g/L at 48 h) in MRS media. The combination of sugarcane waste and alfalfa pellets yielded the highest crude lactic acid production (9.1 %) after 48 h, suggesting its potential as a cost-competitive fermentation medium for industrial-scale lactic acid production. This study contributes to the growing body of evidence supporting the valorization of agro-industrial residues as feedstock for bioprocesses. Furthermore, it presents the novel concept of utilizing consortia for lactic acid production.
农业工业残渣的微生物发酵作为生物加工中一种可持续且经济可行的方法正获得显著关注。本研究探索了使用有机来源的菌株，从选定的农业工业残渣（预处理甘蔗渣、马铃薯皮渣或牛奶加工废渣）与苜蓿颗粒中生产乳酸。评估了五种同型发酵菌株（VITJ1、VITJ2、VITJ3、VITJ4和VITJ5）的兼容性，并将它们组成了15个混合菌群。VITJ2在MRS培养基中显示出最高的个体产量（48小时时为147.1±0.26克/升）。甘蔗渣和苜蓿颗粒的组合在48小时后产生了最高的粗乳酸产量（9.1%），表明其作为工业规模乳酸生产的具有成本竞争力的发酵培养基的潜力。本研究为支持将农业工业残渣作为生物加工原料进行增值利用的越来越多的证据做出了贡献。此外，它还提出了利用混合菌群生产乳酸的新概念。
