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Preparation and antioxidant activity of selenium nanoparticles decorated by polysaccharides from Sargassum fusiforme
Author(s) -
Wang Tian,
Zhao Hongying,
Bi Yongguang,
Fan Xiaodan
Publication year - 2021
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/1750-3841.15605
Subject(s) - extraction (chemistry) , chromatography , polysaccharide , antioxidant , chemistry , sargassum , response surface methodology , ultrasonic sensor , organic chemistry , botany , biology , algae , physics , acoustics
In this study, the response surface method was employed to optimize the extraction conditions of the ultrasonic‐assisted extraction of Sargassum fusiforme polysaccharides (SFPS). The effects of four independent variables (hot water extraction time, ultrasonic time, ultrasonic power, and material‐to‐liquid ratio) on the extraction rate of SFPS were tested. In addition, the SFPS functionalized nanoselenium (SFPS‐SeNPs) was prepared by chemical reduction method, whose characterization and in vitro antioxidant activity were investigated. The results showed that the yield of the crude SFPS was 25.8% at the optimal conditions of material‐to‐liquid ratio 1:50 (w/v), ultrasonic power 200 W, ultrasonic time 15 min, and water bath time 130 min. A series of characterization experiments showed that the SFPS‐SeNPs performed higher dispersion and stability than naked SeNPs. Furthermore, the in vitro antioxidant activity assay indicated that SFPS functioned as a modifier improved the free radical scavenging activity of SeNPs significantly. In conclusion, this study provided a method to extract SFPS as a carrier for SeNPs, and SFPS‐SeNPs could not only improve the stability of SeNPs, but also exerted the biological activities of SFPS. Practical Application This research provided new ideas for the application of SFPS and the development of nanoselenium preparation carriers.