| COMPARATIVE STUDIES ON STRUCTURAL FEATURE OF AGAR POLYSACCHARIDES FROM PORPHYRA HAITANENSIS GROWN IN SOUTH AND NORTH CHINA |
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| 作者姓名： | 高洪峰 纪明侯 曹文达 |
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| 作者单位： | Institute of Oceanology，Academia Sinica，Qingdao 266071，Institute of Oceanology，Academia Sinica，Qingdao 266071，Institute of Oceanology，Academia Sinica，Qingdao 266071 |
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| 摘 要： | The structural feature of agar polysaccharides from Porphyra haitanensis grown in south China and transplanted to the north was investigated by fractioriation on DEAE - Sephadex A 50, chemical analysis, and infrared and 13C - NMR spectroscopy.The agars composed mainly of Charged molecules were eluted from DEAE - Sephadex A 50 with 1.0 mol/L- NaCl solution from the southern P. haitanensis and with 0.5 mol/L NaCl from the northern one. The 13C-NMR spectra showed that agarobiose (1 -3)- B D - galactopyranosyl - (1 -4)-3,6-anhydro-a-L-galactopyranose] and the biological precursor of agarobiose (1-3} B-D-galactopyra nosyl- (1-4)- 6- sulfate-a- L-galactopyranose ] were the major disaccharide repeating units in the charged fractions. The content of the biological precur sor in the agar polysaccharides from southern P. haitanensis was higher than that in the northern one, the content of the biological precursor extracted from cold water was higher than that from hot water, and the content of 6- OMe-D-galactos
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COMPARATIVE STUDIES ON STRUCTURAL FEATURE OF AGAR POLYSACCHARIDES FROM PORPHYRA HAITANENSIS GROWN IN SOUTH AND NORTH CHINA |
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| GAO Hongfeng JI Minghou CAO Wenda.COMPARATIVE STUDIES ON STRUCTURAL FEATURE OF AGAR POLYSACCHARIDES FROM PORPHYRA HAITANENSIS GROWN IN SOUTH AND NORTH CHINA[J].Chinese Journal of Oceanology and Limnology,1993(1). |
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| Authors: | GAO Hongfeng JI Minghou CAO Wenda |
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| Abstract: | The structural feature of agar polysaccharides from Porphyra haitanensis grown in south China and transplanted to the north was investigated by fractioriation on DEAE - Sephadex A 50, chemical analysis, and infrared and 13C - NMR spectroscopy.The agars composed mainly of Charged molecules were eluted from DEAE - Sephadex A 50 with 1.0 mol/L- NaCl solution from the southern P. haitanensis and with 0.5 mol/L NaCl from the northern one. The 13C-NMR spectra showed that agarobiose (1 -3)- B D - galactopyranosyl - (1 -4)-3,6-anhydro-a-L-galactopyranose] and the biological precursor of agarobiose (1-3} B-D-galactopyra nosyl- (1-4)- 6- sulfate-a- L-galactopyranose ] were the major disaccharide repeating units in the charged fractions. The content of the biological precur sor in the agar polysaccharides from southern P. haitanensis was higher than that in the northern one, the content of the biological precursor extracted from cold water was higher than that from hot water, and the content of 6- OMe-D-galactose in the southern P. haitanensis polysaccharides was higher than in the northern one .This distinct difference will be of significance for further study of the physiolog ical characters of P. haitanensis. |
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| Keywords: | Porphyra haitanensis agarose biological precursor |
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