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首页> 外文期刊>Botanica Marina >Carrageenan of Eucheuma isiforme (Solieriaceae, Rhodophyta) fromYucatan, Mexico. I. Effect of extraction conditions
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Carrageenan of Eucheuma isiforme (Solieriaceae, Rhodophyta) fromYucatan, Mexico. I. Effect of extraction conditions

机译：来自墨西哥尤卡坦州的Eucheuma isiforme（茄科，Rhodophyta）的卡拉胶。一，提取条件的影响

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摘要

The yield and physicochemical properties of carrageenan from Eucheuma isiforme harvested at the Yucatan coast were investigated. Carrageenan was extracted under different alkali concentrations (0, 1, 3, 5 and 7% KOH) and treatment durations (3, 4 and 5 h). Native carrageenan, extracted without KOH, had the highest yield ( similar to 44.6%) independently of treatment duration. After alkali treatment, carrageenan yield ranged from 35.3 to 31.8%. No significant differences in carrageenan yield were observed between 1 and 3% KOH. Native carrageenan had low viscosity values (39-57.0 cPs), whereas carrageenan extracted with 1 % KOH at 3 and 4 h increased in viscosity (160,0-161.3 cPs). Alkali-treated carrageenan formed very weak gels (<50 g cm super(-2)) in 1.5% solutions. The chemical analysis and FTIR spectra revealed a preponderantly iota-carrageenan extract. Extractions performed with 1 % KOH for 3 h produced carrageenan with suitable properties to be considered as a substitute for traditional iota-carrageenan sources.
机译：研究了在尤卡坦半岛沿海地区收获的来自Eucheuma isiforme的角叉菜胶的产量和理化性质。在不同的碱浓度（0、1、3、5和7％KOH）和处理时间（3、4和5 h）下提取角叉菜胶。不经KOH提取的天然角叉菜胶产量最高（约44.6％），与治疗时间无关。碱处理后，角叉菜胶的产率为35.3％至31.8％。在1-3％KOH之间，未观察到角叉菜胶产量的显着差异。天然角叉菜胶的粘度值较低（39-57.0 cPs），而在3和4 h用1％KOH提取的角叉菜胶的粘度增加（160,0-161.3 cPs）。碱处理的角叉菜胶在1.5％的溶液中形成非常弱的凝胶（<50 g cm super（-2））。化学分析和FTIR光谱显示，主要是碘-角叉菜胶提取物。用1％KOH进行3小时的萃取可得到具有合适性质的角叉菜胶，可以认为是传统的Iota-角叉菜胶来源的替代品。

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