文献类型：期刊文献

英文题名：The Efficient Capture of Polysaccharides in Tetradesmus Obliquus of Indole-3-Acetic Acid Coupling Sludge Cextraction

作者：Yu, Jiayu[1]; Ding, Biao[1]; Li, Renjie[1]; Chen, Xiurong[1,2]; Yin, Danning[1]; Song, Meijing[1]; Ye, Xiaoyun[1]

机构：[1] National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230282644)

语种：英文

外文关键词：Acetic acid - Algae - Carbon dioxide - Chlorophyll - Molecular biology - Polycyclic aromatic hydrocarbons - Toxicity

摘要：Polysaccharide is an important biomass of algae. The sludge extract is beneficial to the enrichment of polysaccharide due to the abundance of organic matter, while its organic toxicity has an inhibitory effect on algae. To overcome inhibition and improve polysaccharide enrichment,, Tetradesmus obliquus were cultured with sludge extract with different indole-3-acetic acid (IAA) concentrations. Within 30 days of culture cycle, T. obliquus showed in good condition at the IAA dosage content of 10-6 M, the maximum cell density and dry weight were respectively (106.78 ± 2.20) × 106 cell/mL and 2.941 ± 0.067 g/L while the contents of chlorophyll-a, chlorophyll-b and carotenoid were 1.79, 1.91 and 2.80 times that of blank group, respectively. The highest polysaccharide accumulation was obtained under this culture condition, reaching 533.15 ± 21.11 mg/L on the 30th day, which was 2.49 times of that in blank group. Proteomic showed that the up-regulation of A0A383WLM8 promoted the light capture capacity, A0A383WMJ2 and A0A249RWW6 enhanced the accumulation of NADPH and ATP. The up-regulation of A0A383WMK4 promoted the fixation of carbon dioxide and thus the accumulation of polysaccharide. Above findings provide new insights into the mechanism of sludge toxicity removal of T. obliquus and the enhancement of polysaccharide accumulation effect under different concentrations of IAA. ? 2023, The Authors. All rights reserved.