COMPOSITION AND PROPERTIES OF AGAR-TYPE POLYSACCHARIDES FROM GRACILARIA SJOESTEDTII KYLIN

• 作 者: J.S.Craigie
• 机 构: Atlantic Research Laboratory NRCC 1411 Oxford Street Halifax Nova Scotia B3H 3Z1 Canada
• 出 处: Chinese Journal of Oceanology and Limnology
• 发表日期: 1984年01期
• 关键词: Gracilaria Qingdao cycle agarose dissolved embers neutral residue negligible dis

A study was made on the composition and properties of agar-type polysaccharides of Gracilaria sjoestedtii from Qingdao, China. Fractional extraction was carried out and four fractions were obtained. The yields and chemical composition of these fractions were determined. Gel strength measurements of the agar-type polysaccharide fractions were made after alkli modification. The nature of the non-gelling, highly sulphated galactans (Fraction II) present in the thaw water after the initial extraction of Gracilaria in a freeze-thaw cycle was reported and discussed.

A study was made on the composition and properties of agar-type polysaccharides of Gracilaria sjoestedtii from Qingdao, China. Fractional extraction was carried out and four fractions were obtained. The yield and chemical composition of these fractions were determined. Gel strength measurements of the agar -type polysaccharide fractions were made after alkli modification. The nature of the non-gelling, highly sulphated galactans (Fraction II) present in the thaw water after the initial extraction of Gracilaria in a freeze-thaw cycle was reported and discussed.