Extraction Optimization, Physicochemical Characteristics, and Antioxidant Activities of Polysaccharides from Kiwifruit (Actinidia chinensis Planch.)

In order to evaluate effects of extraction techniques on the physicochemical characteristics and antioxidant activities of kiwifruit polysaccharides (KPS), and further explore KPS as functional food ingredients, both microwave-assisted extraction (MAE) and ultrasonic-assisted extraction (UAE) were optimized for the extraction of KPS. Furthermore, the physicochemical structures and antioxidant activities of KPS extracted by different techniques were investigated. The optimal extraction conditions of UAE and MAE for the extraction of KPS were obtained by response surface methodology. Different extraction techniques significantly affected the contents of uronic acids, molecular weights, molar ratios of constituent monosaccharides, and the degree of esterification of KPS. Results showed that KPS exhibited remarkable DPPH and ABTS radical scavenging activities, and reducing power. The high antioxidant activities observed in KPS extracted by the MAE method (KPS-M) might be partially attributed to its low molecular weight and high content of unmethylated galacturonic acid. Results suggested that the MAE method could be a good potential technique for the extraction of KPS with high antioxidant activity, and KPS could be further explored as functional food ingredients. View Full-Text

Keywords: Actinidia chinensis Planch.; polysaccharide; ultrasonic-assisted extraction; microwave-assisted extraction; chemical structure; antioxidant activity

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Han, Q.-H.; Liu, W.; Li, H.-Y.; He, J.-L.; Guo, H.; Lin, S.; Zhao, L.; Chen, H.; Liu, Y.-W.; Wu, D.-T.; Li, S.-Q.; Qin, W. Extraction Optimization, Physicochemical Characteristics, and Antioxidant Activities of Polysaccharides from Kiwifruit (Actinidia chinensis Planch.). Molecules 2019, 24, 461. https://doi.org/10.3390/molecules24030461

AMA Style

Han Q-H, Liu W, Li H-Y, He J-L, Guo H, Lin S, Zhao L, Chen H, Liu Y-W, Wu D-T, Li S-Q, Qin W. Extraction Optimization, Physicochemical Characteristics, and Antioxidant Activities of Polysaccharides from Kiwifruit (Actinidia chinensis Planch.). Molecules. 2019; 24(3):461. https://doi.org/10.3390/molecules24030461

Chicago/Turabian Style

Han, Qiao-Hong, Wen Liu, Hong-Yi Li, Jing-Liu He, Huan Guo, Shang Lin, Li Zhao, Hong Chen, Yao-Wen Liu, Ding-Tao Wu, Shu-Qing Li, and Wen Qin. 2019. "Extraction Optimization, Physicochemical Characteristics, and Antioxidant Activities of Polysaccharides from Kiwifruit (Actinidia chinensis Planch.)" Molecules 24, no. 3: 461. https://doi.org/10.3390/molecules24030461

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Extraction Optimization, Physicochemical Characteristics, and Antioxidant Activities of Polysaccharides from Kiwifruit (Actinidia chinensis Planch.)

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