Mohanty Satya Sundar, Mohanty Kaustubha
School of Energy Sciences and Engineering, Indian Institute of Technology Guwahati, Assam, India.
School of Energy Sciences and Engineering, Indian Institute of Technology Guwahati, Assam, India; Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, India.
Bioresour Technol. 2023 Apr;374:128815. doi: 10.1016/j.biortech.2023.128815. Epub 2023 Mar 1.
The present work aims on developing an eco-friendly strategy that couples the remediation of dairy wastewater with crop protection strategy using microalgal biomass for sustainable agriculture. In the present study, the microalgal strain Monoraphidium sp. KMC4 was cultivated in dairy wastewater. It was observed that the microalgal strain is able to tolerate up to as high as 2000 mg/L of COD and utilize the organic carbon and other nutrient component of the wastewater for biomass production. The biomass extract demonstrates excellent antimicrobial activity against the two phytopathogens (Xanthomonas oryzae and Pantoea agglomerans). GC-MS analysis of the microalgae extract revealed phytochemicals such as chloroacetic acid and 2, 4- di tert butylphenol that are responsible for the inhibition of the microbial growth. These preliminary results indicates that integration of microalgal cultivation and nutrient recycling from wastewaters for the production of biopesticides is a promising prospect for the replacement of synthetic pesticides.
本研究旨在开发一种环保策略，将乳制品废水的修复与利用微藻生物质的作物保护策略相结合，以实现可持续农业。在本研究中，微藻菌株单针藻属KMC4在乳制品废水中培养。观察到该微藻菌株能够耐受高达2000mg/L的化学需氧量，并利用废水中的有机碳和其他营养成分进行生物质生产。生物质提取物对两种植物病原体（水稻黄单胞菌和成团泛菌）表现出优异的抗菌活性。微藻提取物的气相色谱-质谱分析揭示了负责抑制微生物生长的植物化学物质，如氯乙酸和2,4-二叔丁基苯酚。这些初步结果表明，将微藻培养与废水营养物质回收相结合用于生产生物农药是替代合成农药的一个有前景的前景。
