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 Utilization of Microalgae for Self-regulation of extracellular polymeric substance production
Tác giả hoặc Nhóm tác giả: Thi Dong Phuong Nguyen, Chau Tuan Vo, Toan Nguyen-Sy, Thi Ngoc Thu Tran, Thi Van Anh Le,Chen-Yaw Chiu, Revathy Sankaran, and Show Pau Loke
Nơi đăng: Biochemical Engineering Journal; Số: 159;Từ->đến trang: 1-22;Năm: 2020
Lĩnh vực: Khoa học công nghệ; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
Extracellular Polymeric Substance (EPS) production in relation to carbohydrate and protein compositions is an important key in wastewater bio-treatment and microalgal harvesting. The influence of microalgal cultivation conditions on EPS production is welldocumented in previous studies, but there continues to be a research gap that involves the effect of the initial concentration of microalgae added in media culture. This study aimed at investigating the impact of various initial microalgae concentrations on the behavior of carbohydrate and protein compositions constituting EPS. This study is important as it helps to enhance EPS production that associate with its applications. The total carbohydrate on average obtained was 31.1 mg. L-1 and protein 25.6 mg. L-1. Results revealed that the compositions of carbohydrates and proteins were not regulated by initial concentrations of microalgae. However, the difference in the behaviour of the EPS is noticed in the loosely bound-EPS (LB-EPS) and tightly bound-EPS (TB-EPS). The dominant production of carbohydrates in LB-EPS was approximately 2.2 times higher than in TB-EPS. As a conclusion, it was found the effect of monosaccharide fraction was primarily derived by glucose and arabinose components in both layers. The contents of monosaccharide components were analytically stable around 21.70 mg. L-1 after their self-regulation except for glucose in LB-EPS.
ABSTRACT
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