Comparison on structure, chain conformation, and antioxidant activity of polysaccharides extracted from Liriopes radix with hot water and ultrasound. Issue 4 (3rd May 2020)

• Record Type: Journal Article
• Authors: Wang, Xiaomei; Zhang, Shaobo; Li, Zhixu; Wang, Miao; Sun, Runguang
• Is Part Of: Journal of carbohydrate chemistry. Volume 39:Issue 4(2020)
• Page Start: 145
• Page End: 162
• Publication Date: 2020-05-03
• Subjects: Polysaccharide -- Liriopes radix -- ultrasonic extraction -- antioxidant activity; Carbohydrates -- Periodicals; 547.78
• DOI: 10.1080/07328303.2020.1746329
• Languages: English
• ISSNs: 0732-8303

Abstract

Abstract: The structures and chain conformations of two polysaccharides from Liriopes radix, WPRL-DS and UPRL-DS, isolated with hot water and ultrasound, respectively, were investigated by a combination of IR, GC, GC-MS, periodate oxidation, Smith degradation, NMR, AFM, and Congo red test. The results proved that the yield of ultrasonic extraction (UPRL-DS) was higher than that of hot water extraction (WPRL-DS). UPRL-DS had the same primary structure as WPRL-DS. However, UPRL-DS was spirally shaped whereas WPRL-DS was not. Both WPRL-DS and UPRL-DS were proved to have significant antioxidant activities as evidenced by their hydroxyl radical, superoxide anion, and 1, 1-diphenyl-2-picryl-hydrazyl radical scavenging activities. UPRL-DS exhibited more effective antioxidant activity than WPRL-DS in a concentration-dependent manner.