CHARACTERIZATION OF ALGINATE PREPARED FROM BROWN SEAWEEDS IN THUA THIEN-HUE PROVINCE, VIETNAM

Tran Vinh Thien (Department of Chemistry and Biology, Phu Yen College of Pedagogy)
Chu Dinh Kinh (Institute of Chemistry, Vietnamese Academy of Science and Technology)
Tran Thai Hoa (Department of Chemistry, College of Sciences, Hue University)
Dinh Quang Khieu (Department of Chemistry, College of Sciences, Hue University)

ASEAN Journal on Science and Technology for Development
Vol. 25 No. 2 (2008): ASEAN Journal on Science and Technology for Development (AJSTD)

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.