title: Composition and antioxidant activity of polysaccharides from jujuba by classical and ultrasound extraction.
abstract: Crude Zizyphus Jujuba cv. Junzao polysaccharides (CZP) were extracted by hot water and ultrasound-assisted extraction respectively. Using a short application of ultrasound, the yield of polysaccharides increased from 6.23 to 7.95%, which represents an increase of about 27.6%. Both CZPU and CZPH were composed of arabinose, rhamnose, glucose, galactose, and mannose. However, the molar ratio of CZPU was 5.46: 4.96: 5.17: 2.63: 1, while it was 5.46: 4.89: 3.65: 2.54: 1 for CZPH. Furthermore, CZPU had stronger antioxidant activities than CZPH by evaluating in hydroxyl radical and ferric-reducing antioxidant power (FRAP) assay.
authors.affiliation: State Key Laboratory of Dairy Biotechnology, Technology Center, Bright Dairy & Food Co. Ltd., Shanghai 200436, China; State Key Laboratory of Food Science and Technology, School of Food Science & Technology, Jiangnan University, Wuxi 214122, China.
authors.forename: Jinwei
authors.initials: J
authors.lastname: Li
authors.affiliation: State Key Laboratory of Dairy Biotechnology, Technology Center, Bright Dairy & Food Co. Ltd., Shanghai 200436, China.
authors.forename: Lianzhong
authors.initials: L
authors.lastname: Ai
authors.affiliation: State Key Laboratory of Dairy Biotechnology, Technology Center, Bright Dairy & Food Co. Ltd., Shanghai 200436, China; State Key Laboratory of Food Science and Technology, School of Food Science & Technology, Jiangnan University, Wuxi 214122, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Hang
authors.affiliation: State Key Laboratory of Food Science and Technology, School of Food Science & Technology, Jiangnan University, Wuxi 214122, China.
authors.forename: Shaodong
authors.initials: S
authors.lastname: Ding
authors.affiliation: State Key Laboratory of Food Science and Technology, School of Food Science & Technology, Jiangnan University, Wuxi 214122, China. Electronic address: ljw6688@hotmail.com.
authors.forename: Yuanfa
authors.initials: Y
authors.lastname: Liu
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D001089:Arabinose / Q000737:chemistry; D016166:Free Radical Scavengers / Q000737:chemistry; D005690:Galactose / Q000737:chemistry; D008358:Mannose / Q000737:chemistry; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification; D017550:Spectroscopy, Fourier Transform Infrared; D031957:Ziziphus / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D016166:Free Radical Scavengers; D011134:Polysaccharides; D001089:Arabinose; D008358:Mannose; D005690:Galactose
keywords: Extraction; Ultrasound; Zizyphus jujuba cv. Junzao