The characterization of alginate prepared from brown seaweeds in TT-Hue province of Vietnam was investigated. Composition and the sequential structure of alginate were determined by 1HNMR, 13C-NMR, TOCSY, 1H-1H COSY, and 1H-13C-HSQC spectrum. It is found that alginate with molecular weight around 101 KDa is composed of homopolymeric regions of M and G blocks, interspersed with very small amount of regions of alternating structure of MG block. This information is essential for application guideline of alginate in TT-Hue province.
Dennis J. Mc Hugh (1987), Production and utilization of products from commercial seaweeds, FAO fisheries technical paper, vol. 288, pp. 8-9.
Nguyen Huu Dai (1997), Sargassaceae in Viet Nam - Resource & Utility, Agriculture Publishing House, Ho Chi Minh city, (Vietnamese).
Vo Thi Mai Huong (2000), Some of bio-physical and bio-chemical specifications of brown seaweeds sargassum SP4 seashore growing of Lang Co, TT-Hue province, Journal of Biology, vol. 22, (3b), pp. 73-76 (Vietnamese).
Vo Thi Mai Huong and Truong Van Lung (1999), Study on technological extract alginate from sargasum of Thua Thien-Hue, Proceedings of National conference on biological technology, Ha Noi, pp. 556-571 (Vietnamese).
Tran Thai Hoa and Tran Vinh Thien (2003), Study on some factors influencing on the preparation process of alginate from brown seaweeds of TT-Hue province, Proceedings of 4th National chemistry conference, Ha Noi, vol. 1, pp. 318-325 (Vietnamese).
Tran Thai Hoa and Tran Vinh Thien (2004), Study on preparation of oligoalginate by hydrolysis method, Journal of Research and Development, Department of Sciences and Technology, TT-Hue province, vol. 1(44), pp. 70-76 (Vietnamese).
Tran Thai Hoa, Tran Vinh Thien, and Dinh Quang Khieu (2005), Factorial experimental designs in preparation of alginate from brown seaweeds of Thua Thien-Hue Province, The 2nd International Symposium on Advanced Materials in Asia-Pacific Rim, Ha Noi, pp, 7477.
Alistair M. Stephen (1995), Food Polysaccharides and their Application, Food and Technology, vol. 67, pp. 245-248.
Anita Martinsen, Gudmund Skjâk-Bræk, Olav Smidsrød (1991), Comparison of different methods for determination of molecular weight and molecular weight distribution of alginates, Carbohydrate Polymers, vol. 15, pp. 171-193.
Ikeda, A., Takemura, A., and Ono, H. (2000), Preparation of low-molecular weight alginic acid by acid hydrolysis, Carbohydrate Polymers, vol. 42, pp. 421-425.