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Polysaccharides from INitraria retusa/I Fruit: Extraction, Purification, Structural Characterization, and Antioxidant Activities

Molecules (Basel, Switzerland), 2023-01, Vol.28 (3) [Peer Reviewed Journal]

COPYRIGHT 2023 MDPI AG ;ISSN: 1420-3049 ;EISSN: 1420-3049 ;DOI: 10.3390/molecules28031266

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  • Title:
    Polysaccharides from INitraria retusa/I Fruit: Extraction, Purification, Structural Characterization, and Antioxidant Activities
  • Author: Song, Lijun ; Liu, Shiqi ; Zhang, Li ; Pan, Leiqing ; Xu, Long
  • Subjects: Antioxidants ; Diabetes therapy ; Polyphenols ; Polysaccharides
  • Is Part Of: Molecules (Basel, Switzerland), 2023-01, Vol.28 (3)
  • Description: Polysaccharides are important bioactive components of Nitraria retusa fruit (NRF). In this study, the ultrasonic-assisted extraction (UAE) conditions of polysaccharides from Nitraria retusa fruit (NRFPs) were optimized by response surface methodology (RSM). The structural characteristics and antioxidant activity were investigated. The maximum NRFPs yield of 3.35% was obtained under the following optimal conditions: temperature of 59.5 °C, time of 30.5 min, liquid-to-solid ratio of 19.5 mL/g. Three polysaccharide fractions, NRFP-1 (20.01 kDa), NRFP-2 (28.96 kDa), and NRFP-3 (67.45 kDa), were isolated. Glucose, galactose, and arabinose in different percentages were identified as the primary monosaccharide units. The Fourier transform infrared spectrometer (FT-IR) and nuclear magnetic resonance (NMR) analysis indicated the presence of α- and β-glycosidic bonds in NRFPs. The NRFP-3 exhibited the highest scavenging activities against DPPH, ABTS, -OH free radicals, and Fe[sup.+3]-reducing activity.
  • Publisher: MDPI AG
  • Language: English
  • Identifier: ISSN: 1420-3049
    EISSN: 1420-3049
    DOI: 10.3390/molecules28031266
  • Source: GFMER Free Medical Journals
    PubMed Central
    Alma/SFX Local Collection
    ProQuest Central
    DOAJ Directory of Open Access Journals
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