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Tang DYY, Chew KW, Chia SR, Ting HY, Sia YH, Gentili FG, Ma Z, Awasthi MK, Show PL. Triphasic partitioning of mixed Scenedesmus and Desmodesmus for nutrients' extraction and chlorophyll composition prediction for algae bloom. ENVIRONMENTAL TECHNOLOGY 2022:1-12. [PMID: 36536589 DOI: 10.1080/09593330.2022.2150094] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 10/28/2022] [Indexed: 06/17/2023]
Abstract
Overgrowth of microalgae will result in harmful algae blooms that can affect the aquatic ecosystem and human health. Therefore, the quantitation of chlorophyll pigments can be used as an indicator of algae bloom. However, it is difficult to monitor the geographical and temporal distribution of chlorophyll in the aquatic environment. Accordingly, an innovative and inexpensive method based on the red-green-blue (RGB) image analysis was utilized in this study to estimate the microalgae chlorophyll content. The digital images were acquired using a smartphone camera. The colour index was then evaluated using software and associated with chlorophyll concentration significantly. A regression model, using RGB colour components as independent variables to estimate chlorophyll concentration, was developed and validated. The Green in the RGB index was the most promising way to estimate chlorophyll concentration in microalgae. The result showed that acetone was the best extractant solvent with a high R-squared value among the four extractant solvents. Next, the isolation of useful biomolecules, such as proteins, fatty acids, polysaccharides and antioxidants from the microalgae, has been recognized as an alternative to regulating algae bloom. Microalgae are shown to produce bioactive compounds with a variety of biological activities that can be applied in various industries. This study evaluates the biochemical composition of mixed microalgae species, Desmodesmus sp. and Scenedesmus sp. using the liquid triphasic partitioning (TPP) system. The findings from analytical assays revealed that the biomass consisted of varied concentrations of carbohydrates, protein, and lipids. Phenolic compounds and antioxidant activity were at 60.22 mg/L and 90.69%, respectively.
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Affiliation(s)
- Doris Ying Ying Tang
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Semenyih, Malaysia
| | - Kit Wayne Chew
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore, Singapore
| | - Shir Reen Chia
- Institute of Sustainable Energy, Universiti Tenaga Nasional (UNITEN), Kajang, Malaysia
| | - Huong-Yong Ting
- Drone Research and Application Centre, University of Technology Sarawak, Sarawak, Malaysia
| | - Yuk-Heng Sia
- Drone Research and Application Centre, University of Technology Sarawak, Sarawak, Malaysia
| | - Francesco G Gentili
- Department of Forest Biomaterials and Technology (SBT), Swedish University of Agricultural Sciences (SLU), Umeå, Sweden
| | - Zengling Ma
- Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, People's Republic of China
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environmental, Northwest A&F University, Yangling, People's Republic of China
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Semenyih, Malaysia
- Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, People's Republic of China
- Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai, India
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Abd El-Hamid HT, Reda R, Zarzoura F, Hafiz MA, El-Alfy MA. Integrated approach of remote sensing and machine learning to simulate and predict petroleum pollution and algal blooms along Aqaba Gulf. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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