Abstract Solid biowastes (SBW) are organic residues from gardens and parks, food wastes from kitchens, organic municipal solid wastes and comparable side streams from food processing plants. Without proper treatment, SBW represent an environmental hazard. Several initiatives around the world are dedicated to developing more effective systems for the treatment of this constantly growing ‘resource’. The chemical composition of SBW, rich in carbohydrates, proteins and lipids, makes it a good substrate to produce biobased materials through fermentation. Amongst them, lactic acid (LA), considered one of the top ten green molecules of the future, has attracted huge interest because of its many uses as an intermediate chemical. This review gathers the most important learnings from fermentation of SBW to LA, providing an overview of the process steps while highlighting some of the current limitations to overcome. Despite their complexity, results suggest that some of the SBW could be good substrates in LA fermentations and that biosynthesis of LA should be regarded as part of the whole waste management solution.

中文翻译：

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固体生物废物的价值化：乳酸替代品

摘要 固体生物垃圾 (SBW) 是来自花园和公园的有机残留物、来自厨房的食物垃圾、有机城市固体垃圾以及来自食品加工厂的类似侧流。如果没有适当的处理，SBW 会造成环境危害。世界各地的一些举措致力于开发更有效的系统来处理这种不断增长的“资源”。SBW 的化学成分富含碳水化合物、蛋白质和脂质，使其成为通过发酵生产生物基材料的良好基质。其中，被认为是未来十大绿色分子之一的乳酸 (LA) 因其作为中间体化学品的多种用途而引起了极大的兴趣。这篇评论收集了从 SBW 发酵到 LA 的最重要的知识，提供流程步骤的概述，同时强调当前需要克服的一些限制。尽管它们很复杂，但结果表明一些 SBW 可能是 LA 发酵中的良好底物，并且 LA 的生物合成应被视为整个废物管理解决方案的一部分。