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The Chemical Structure of Agar from Gracilaria
compressa (C. Agardh) Greville, G. cervicornis (Turner) J. Agardh, G. damaecornis J. Agardh and G.
domingensis Sonder ex Kützing (Gigartinales,基金转换技巧
Rhodophyta)
秋收万颗子
期刊名称： Botanica Marina
作者： M.,Lahaye,W.,Yaphe
春节简单手抄报
昆德拉>元宵节舞狮子年份： 1989年一个夸一个瓜怎么读
期号： 第4期
摘要：The chemical structure of agar fractions obtained from Gracilaria compressa, G. cervicornis, G. damaecornis and G. domingensis with a quential solvent extraction has been determined by 13C-NMR spectroscopy. Gracilaria compressa agar consists of agarobio, pyruvated agarobio and a lo足球素材
w concentration of 6-Omethylated agarobio repeating units; G. cervicornis and G. domingensis agars are compod of 6-O-methylated agarobio, agarobio-6-sulfate, agarobio, and a repeating unit with 4-O-methyl-α-L-galacto; finally, G. damaecornis agar is made of the same repeating units of the latter agars plus agarobio-4-sulfate. From the four algae, a fraction enriched with pyruvated or sulfated repeating units was obtained in water at room temperature. An extract esntially compod of only 6-O-methylated,agarobio repeating
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