CHARACTERIZATION OF AN AGAR FRACTION EXTRACTED FROM GRACILARIA-DURA (GRACILARIALES, RHODOPHYTA)

被引：9
|
作者：
MURANO, E
BRANDOLIN, C
ZANETTI, F
PAOLETTI, S
RIZZO, R
机构：
[1] UNIV TRIESTE, DIPARTIMENTO BIOCHIM BIOFIS & CHIM MACROMOLECOLE, I-34127 TRIESTE, ITALY
[2] NAPLES UNIV, DEPARTIMENTO CHIM, I-80134 NAPLES, ITALY
来源：
HYDROBIOLOGIA | 1990年 / 204卷
关键词：
agar; chemical characterization; Gracilaria; molecular weight distribution; seaweed;
D O I：
10.1007/BF00040288
中图分类号：
Q17 [水生生物学];
学科分类号：
071004 ;
摘要：
The evaluation of biopolymers of biotechnological interest has stressed the importance of renewable sources from the northern Adriatic Sea. In the frame of this research program, the red alga Gracilaria cf. dura, has been studied. Agar was obtained from Gracilaria cf. dura by means of alkali treatment and hot water extraction. In order to purify the extracts, amylase and isopropyl alcohol were used. Analysis of sugars was carried out by means of gas chromatography on alditol acetate derivatives; sulfate content was evaluated by means of infrared spectroscopy. An analysis of molecular weight distribution was carried out by means of high performance gel permeation chromatography coupled with a low angle laser light scattering device as detector. Analytical data were examined in terms of specificity of the algal source utilized, and the agar fractions extracted by means of this procedure were compared with a commercial sample. © 1990 Kluwer Academic Publishers.
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页码：567 / 571
页数：5
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