Structural characteristics, rheological properties, and biological activities of polysaccharides from different cultivars of okra (Abelmoschus esculentus) collected in China
Autor: | Shang Lin, Hua-Yu Li, Qing Zhang, Hong Chen, Li Zhao, Gang Du, Hong-Yi Li, Xi-Rui Nie, Rui Hu, Wen Qin, Ding-Tao Wu |
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Rok vydání: | 2019 |
Předmět: |
Arabinose
Antioxidant Chemical Phenomena Rhamnose medicine.medical_treatment Quantitative Structure-Activity Relationship 02 engineering and technology Polysaccharide Biochemistry 03 medical and health sciences chemistry.chemical_compound Functional food Abelmoschus Polysaccharides Structural Biology medicine Monosaccharide Glycoside Hydrolase Inhibitors Cultivar Food science Molecular Biology 030304 developmental biology chemistry.chemical_classification 0303 health sciences Molecular Structure biology Chemistry Spectrum Analysis alpha-Glucosidases General Medicine 021001 nanoscience & nanotechnology biology.organism_classification Molecular Weight Rheology 0210 nano-technology |
Zdroj: | International Journal of Biological Macromolecules. 139:459-467 |
ISSN: | 0141-8130 |
Popis: | In order to well understand the physicochemical characteristics and biological activities of polysaccharides (OPPs) from different cultivars of okra collected in China, the chemical characteristics, rheological properties, antioxidant activities, in vitro binding properties, and in vitro inhibitory effects on α-glucosidase of polysaccharides from five representative okra cultivars, including ‘Lvjian’, ‘Kalong8’, ‘Shuiguo’, ‘Taiwanwufu’, and ‘Kalong3’, were investigated and compared. Results showed that the constituent monosaccharides of OPPs were similar, which composed of rhamnose, galacturonic acid, galactose, and arabinose. However, their weight-average molecular weights varied from 2.76 × 103 to 4.20 × 103 kDa, and from 0.11 × 103 to 0.90 × 103 kDa, respectively. The uronic acids and degrees of esterification of OPPs ranged from 39.32% to 61.68%, and from 21.66% to 30.02%, respectively. OPPs exhibited typical shear-thinning behavior and viscoelastic properties. Furthermore, OPPs exhibited remarkable antioxidant activities, in vitro binding capacities, and inhibitory effects on α-glucosidase, which might be attributed to their relatively high content of uronic acids, high degrees of esterification, and high molecular weights. Results are helpful for better understanding of the physicochemical structures and bioactivities of OPPs, and OPPs had good application prospects as functional food ingredients for industrial applications. |
Databáze: | OpenAIRE |
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