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Antioxidant activities of Sagittaria sagittifolia L. polysaccharides with subcritical water extraction. 2019

Jixian Zhang, and Chaoting Wen, and Meng Chen, and Jinyan Gu, and Jie Zhou, and Yuqing Duan, and Haihui Zhang, and Haile Ma
School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.

In the present study, orthogonal experiment (L9 (3)4) was used to optimize the extraction process of Sagittaria sagittifolia L. polysaccharides (SSP) with subcritical water, and the antioxidant activities of polysaccharides were also investigated. The results showed that the optimum extraction conditions were obtained when pH, extraction temperature, extraction time, and liquid to solid ratio were 7, 170 °C, 16 min and 30:1 (mL/g), respectively. In addition, DPPH/ABTS radical scavenging rate and Fe3+ reducing power of polysaccharides exhibited a certain dose-effect relationship. Furthermore, both yield and antioxidant activities of polysaccharides with subcritical water extraction (SWE) were higher than traditional hot water extraction (HWE). The above results showed that SWE was an effective technique to extract and separate polysaccharides from Sagittaria sagittifolia L., which may be potentially applied in the related polysaccharides extraction.

UI MeSH Term Description Entries
D010084 Oxidation-Reduction A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471). Redox,Oxidation Reduction
D010936 Plant Extracts Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard. Herbal Medicines,Plant Extract,Extract, Plant,Extracts, Plant,Medicines, Herbal
D011134 Polysaccharides Long chain polymeric CARBOHYDRATES composed of MONOSACCHARIDES linked by glycosidic bonds. Glycan,Glycans,Polysaccharide
D006863 Hydrogen-Ion Concentration The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D000975 Antioxidants Naturally occurring or synthetic substances that inhibit or retard oxidation reactions. They counteract the damaging effects of oxidation in animal tissues. Anti-Oxidant,Antioxidant,Antioxidant Activity,Endogenous Antioxidant,Endogenous Antioxidants,Anti-Oxidant Effect,Anti-Oxidant Effects,Anti-Oxidants,Antioxidant Effect,Antioxidant Effects,Activity, Antioxidant,Anti Oxidant,Anti Oxidant Effect,Anti Oxidant Effects,Anti Oxidants,Antioxidant, Endogenous,Antioxidants, Endogenous
D013057 Spectrum Analysis The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Spectroscopy,Analysis, Spectrum,Spectrometry
D013696 Temperature The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms. Temperatures
D016166 Free Radical Scavengers Substances that eliminate free radicals. Among other effects, they protect PANCREATIC ISLETS against damage by CYTOKINES and prevent myocardial and pulmonary REPERFUSION INJURY. Free Radical Scavenger,Radical Scavenger, Free,Scavenger, Free Radical,Scavengers, Free Radical
D059625 Liquid-Liquid Extraction The removal of a soluble component from a liquid mixture by contact with a second liquid, immiscible with the carrier liquid, in which the component is preferentially soluble. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Liquid Phase Extraction,Extraction, Liquid Phase,Extraction, Liquid-Liquid,Extractions, Liquid Phase,Extractions, Liquid-Liquid,Liquid Liquid Extraction,Liquid Phase Extractions,Liquid-Liquid Extractions,Phase Extraction, Liquid,Phase Extractions, Liquid
D034903 Sagittaria A plant genus of the family ALISMATACEAE that grows in salty marshes and is used for phytoremediation of oil spills. The unisexual flowers have 3 sepals and 3 petals. Members contain trifoliones (DITERPENES). Arrowhead,Arrowheads,Sagittarias

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