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Extraction Optimization and Evaluation of the Antioxidant and α-Glucosidase Inhibitory Activity of Polysaccharides from Chrysanthemum morifolium cv. Hangju

1
College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
2
College of Biomass Science and Engineering, Sichuan University, Chengdu 610000, China
3
College of Forest, Sichuan Agricultural University, Chengdu 610000, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Antioxidants 2020, 9(1), 59; https://doi.org/10.3390/antiox9010059
Received: 6 December 2019 / Revised: 31 December 2019 / Accepted: 7 January 2020 / Published: 9 January 2020
(This article belongs to the Special Issue Natural and Synthetic Antioxidants as Food Additives)
In order to evaluate the antioxidant and α-glucosidase activities of polysaccharides from Chrysanthemum morifolium cv. Hangju (CMPs), the response surface methodology was applied to optimize the parameters for extraction progress of CMPs by ultrasound, with heat reflex extraction (HRE) performed as the control. The difference in the physicochemical properties of polysaccharides obtained by the two methods were also investigated. The maximum yields (8.29 ± 0.18%) of polysaccharides extracted by ultrasonic assisted extraction (UAE) were obtained under the optimized conditions of ultrasonic power 501 W, extraction time 19 min, and ratio of liquid-to-raw material 41 mL/g. Polysaccharides extracted by UAE possessed lower protein contents (2.56%) and higher uronic acids contents (7.08%) and low molecular weight fractions than that by HRE. No significant differences were found in monosaccharide composition and Fourier transform infrared (FT-IR) spectra of polysaccharides extracted by UAE and HRE, while polysaccharides by UAE possessed stronger antioxidant and α-glucosidase inhibitory activities. Therefore, UAE was an efficient way to obtain CMPs. View Full-Text
Keywords: Chrysanthemum morifolium cv. Hangju; polysaccharides; ultrasonic assisted extraction; antioxidant activity; α-glucosidase inhibitory activity Chrysanthemum morifolium cv. Hangju; polysaccharides; ultrasonic assisted extraction; antioxidant activity; α-glucosidase inhibitory activity
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Hou, X.; Huang, X.; Li, J.; Jiang, G.; Shen, G.; Li, S.; Luo, Q.; Wu, H.; Li, M.; Liu, X.; Chen, A.; Ye, M.; Zhang, Z. Extraction Optimization and Evaluation of the Antioxidant and α-Glucosidase Inhibitory Activity of Polysaccharides from Chrysanthemum morifolium cv. Hangju. Antioxidants 2020, 9, 59.

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