Polysaccharides from Nitraria retusa Fruit: Extraction, Purification, Structural Characterization, and Antioxidant Activities

被引：15
作者：
Song, Lijun [1 ]
Liu, Shiqi [1 ]
Zhang, Li [1 ]
Pan, Leiqing [2 ]
Xu, Long [3 ]
机构：
[1] Hebei Normal Univ Sci & Technol, Coll Food Sci & Technol, Qinhuangdao 066600, Peoples R China
[2] Nanjing Agr Univ, Coll Food Sci & Technol, Nanjing 210095, Peoples R China
[3] Henan Agr Univ, Coll Food Sci & Technol, Zhengzhou 450002, Peoples R China
来源：
MOLECULES | 2023年 / 28卷 / 03期
关键词：
Nitraria retusa fruit; polysaccharides; ultrasonic-assisted extraction; structure characterization; antioxidant activity; GINGER ZINGIBER-OFFICINALE; DIOSCOREA-OPPOSITA THUNB; IN-VITRO ANTIOXIDANT; PHYSICOCHEMICAL PROPERTIES; BIOLOGICAL-ACTIVITIES; ASSISTED EXTRACTION; MECHANISMS;
D O I：
10.3390/molecules28031266
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
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 degrees 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 alpha- and beta-glycosidic bonds in NRFPs. The NRFP-3 exhibited the highest scavenging activities against DPPH, ABTS, -OH free radicals, and Fe+3-reducing activity.
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页数：15
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