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1. Effects of hydrogen peroxide on Scenedesmus obliquus: Cell growth, antioxidant enzyme activity and intracellular protein fingerprinting

Author:
Haihan Zhang; Rongrong Zong; Huiyan He; Tinglin Huang
Source:
Chemosphere 2022 v.287 pp. 132185
ISSN:
0045-6535
Subject:
Scenedesmus obliquus; algae; algicides; alginates; antioxidant enzymes; ascorbic acid; biochemical pathways; biosynthesis; catalase; cell growth; chlorophyll; enzyme activity; gene expression regulation; hydrogen peroxide; oxidative stress; photosynthesis; protein composition; protein-protein interactions; proteomics; superoxide dismutase
Abstract:
... Hydrogen peroxide (H₂O₂) is an environmental-friendly algicide and it is widely used to control algal blooms in aquatic ecosystems. However, the response of algal cell metabolic characteristics and intracellular protein profile under H₂O₂ stress is still not well understood. In the present study, the green alga Scenedesmus obliquus was exposed to different concentrations of H₂O₂ (0, 2, 6, 8 and 10 ...
DOI:
10.1016/j.chemosphere.2021.132185

2. Ecofriendly extraction of bioactive fractions from Sargassum muticum

Author:
María P. Casas; Enma Conde; Herminia Domínguez; Andrés Moure
Source:
Process biochemistry 2019 v.79 pp. 166-173
ISSN:
1359-5113
Subject:
Sargassum muticum; algae; alginates; antioxidant activity; ascorbic acid; cytotoxicity; enzymatic treatment; enzyme activity; enzymes; feedstocks; fibroblasts; humans; melanoma; mice; solubilization; ultrasonics; unsaturated fatty acids
Abstract:
... An ecofriendly process based on an enzyme-assisted extraction coupled with ultrasound extraction was proposed to obtain soluble bioactive fractions from Sargassum muticum. Whole algae (Sm) and residual algae from alginate production (AESm) were employed as feedstock. Aqueous enzyme treatment with commercial complex enzyme formulations or with mixture of enzymes lead to maximum solubilization yield ...
DOI:
10.1016/j.procbio.2018.12.021