title: Structural and compositional characteristics of hybrid carrageenans from red algae Chondracanthus chamissoi.
abstract: Two polysaccharides CCC and CCH were extracted from red algae Chondracanthus chamissoi by cold water and hot water, respectively. Characterization of the structure by chemical and spectroscopic methods showed that CCC was a hybrid carrageenan composed of κ-carrageenan (35%) and ι-carrageenan (43%) along with its precursor μ-carrageenan (22%) and CCH was an ideal κ-carrageenan. Oligosaccharides from CCH and CCC were prepared and their structural sequences determined by ES-CID-MS/MS gave further insight into the structural characteristics of hybrid carrageenans from C. chamissoi. Some hybrid oligosaccharides, e.g., κ-κ, κ-μ and κ-ι, were obtained with mild acid hydrolysis of CCC. Then, a regular even-numbered oligosaccharides generated with reductive acid hydrolysis of CCH confirmed it an ideal κ-carrageenan.
authors.affiliation: Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
authors.forename: Peipei
authors.initials: P
authors.lastname: Wang
authors.affiliation: Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
authors.forename: Xiaoliang
authors.initials: X
authors.lastname: Zhao
authors.affiliation: Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
authors.forename: Youjing
authors.initials: Y
authors.lastname: Lv
authors.affiliation: Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
authors.forename: Miaomiao
authors.initials: M
authors.lastname: Li
authors.affiliation: Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.affiliation: Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
authors.forename: Guangsheng
authors.initials: G
authors.lastname: Li
authors.affiliation: Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China; Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
authors.forename: Guangli
authors.initials: G
authors.lastname: Yu
mesh_terms: D066241:Carbon-13 Magnetic Resonance Spectroscopy; D002351:Carrageenan / Q000737:chemistry*; D002850:Chromatography, Gel; D013058:Mass Spectrometry; D015394:Molecular Structure; D000461:Rhodophyta / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D002351:Carrageenan