School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China.
State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China.
Int J Environ Res Public Health. 2022 May 28;19(11):6614. doi: 10.3390/ijerph19116614.
Food waste, as a major part of municipal solid waste, has been increasingly generated worldwide. Efficient and feasible utilization of this waste material for biomanufacturing is crucial to improving economic and environmental sustainability. In the present study, black soldier flies (BSF) larvae were used as carriers to treat and upcycle food waste. Larvae of the BSF were incubated with UV light for 10, 20, and 30 min at a wavelength of 257.3 nm and an intensity of 8 W. The food waste utilization efficiency, antioxidant assays, antibacterial activity, and bioactive metabolites without and with UV treatment were determined and compared. Results showed that the BSF larvae feed utilization rate was around 75.6%, 77.7%, and 71.2% after UV treatment for 10, 20, and 30 min respectively, contrasting with the non-UV induced group (73.7%). In addition, it was perceived that the UV exposure enhanced antioxidant and antimicrobial properties of BSF extracts, and the maximum values were observed after 20 min UV induction time. Moreover, UV-induced BSF extracts showed an improved metabolic profile than the control group, with a change in the amino acids, peptides, organic acids, lipids, organic oxides, and other derivatives. This change in metabolomics profile boosted environmental signaling, degradation of starch, amino acids, sugars, and peptide metabolism. It was concluded that the bioconversion of food wastes using UV-induced BSF larvae can enhance the generation of a variety of functional proteins and bioactive compounds with potent antioxidant and antimicrobial activity. However, more studies are required to exploit the efficiency of UV treatment in improving BSF's potential for upcycling of food wastes.
食物垃圾作为城市固体废物的主要组成部分，在全球范围内的产生量日益增加。高效且可行地利用这种废物材料进行生物制造对于提高经济和环境可持续性至关重要。在本研究中，使用黑水虻幼虫作为载体来处理和再利用食物垃圾。将黑水虻幼虫在波长为 257.3nm、强度为 8W 的紫外线下孵育 10、20 和 30 分钟。测定并比较了未经过和经过 UV 处理的食物垃圾利用率、抗氧化测定、抗菌活性和生物活性代谢物。结果表明，经过 10、20 和 30 分钟的 UV 处理后，黑水虻幼虫的饲料利用率分别约为 75.6%、77.7%和 71.2%，与非 UV 诱导组（73.7%）形成对比。此外，研究发现 UV 暴露增强了黑水虻提取物的抗氧化和抗菌性能，并且在 20 分钟的 UV 诱导时间后观察到最大值。此外，UV 诱导的黑水虻提取物表现出比对照组更好的代谢谱，其中氨基酸、肽、有机酸、脂质、有机氧化物和其他衍生物发生了变化。这种代谢组学谱的变化促进了环境信号的传递，淀粉、氨基酸、糖和肽代谢的降解。研究得出结论，使用 UV 诱导的黑水虻幼虫对食物垃圾进行生物转化可以增强各种具有抗氧化和抗菌活性的功能性蛋白质和生物活性化合物的生成。然而，需要进一步的研究来探索 UV 处理在提高黑水虻幼虫对食物垃圾再利用潜力方面的效率。
