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首页> 外文期刊>Botanica Marina >Carrageenan of Eucheuma isiforme (Solieriaceae, Rhodophyta) fromYucatan, Mexico. II. Seasonal variations in carrageenan andbiochemical characteristics
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Carrageenan of Eucheuma isiforme (Solieriaceae, Rhodophyta) fromYucatan, Mexico. II. Seasonal variations in carrageenan andbiochemical characteristics

机译：来自墨西哥尤卡坦州的Eucheuma isiforme（茄科，Rhodophyta）的卡拉胶。二。角叉菜胶和生化特性的季节性变化

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Seasonal variation in the biochemical composition and carrageenan content were studied in Eucheuma isiforme from Yucatan, Mexico. Dry weight and carrageenan yield were lowest during the late cold-early dry seasons and highest during the late rain-early cold seasons. Total carbohydrates varied seasonally and were similar to variations in carrageenan yield. The factors responsible for the seasonal variation of biochemical and carrageenan characteristics of E. isiforme from Yucatan are interrelated, and their effects are difficult to separate. Thus our results suggest that biochemical composition can be related to seawater temperature and hence to growth, while incident light and nutrients can influence the carrageenan quantify. Although no direct growth estimation has been made, changes in E. isiforme dry weight suggest that active growth starts from the late cold season throughout the dry season when seawater temperature is optimal. The above coincided with an increase in protein content and a decrease in total carbohydrates linked to reduced carrageenan synthesis. Carrageenan content is higher during the early cold season, coinciding with high nutrient concentrations and reduced light. Carrageenan yield and viscosities in E. isiforme were near levels required for Eucheuma species in industrial applications, suggesting potential commercial/industrial use of this species. These results should be taken into consideration for the management of natural populations as well as for mariculture of this species on the Yucatan coast.
机译：在墨西哥尤卡坦州的Eucheuma isiforme中研究了生化成分和角叉菜胶含量的季节性变化。干重和角叉菜胶产量在寒冷早期至干旱季节最低，而在雨中晚期至早期寒冷季节最高。总碳水化合物随季节变化，与角叉菜胶产量相似。尤卡坦州大肠埃希菌的生化和角叉菜胶特性的季节性变化的相关因素相互关联，其作用难以区分。因此，我们的结果表明，生化成分可能与海水温度有关，从而与生长有关，而入射光和营养物质可能影响角叉菜胶的定量。尽管没有进行直接的生长估算，但等形肠埃希菌干重的变化表明，在海水温度最佳的整个干旱季节，从寒冷的后期开始活跃生长。上述与蛋白质含量的增加和与角叉菜胶合成减少有关的总碳水化合物的减少相吻合。在寒冷的早期，鹿角菜胶的含量较高，这与较高的营养素含量和减少的光照相吻合。大肠埃希菌中角叉菜胶的产量和粘度接近工业应用中Eucheuma物种所需的水平，表明该物种具有潜在的商业/工业用途。在管理自然种群以及在尤卡坦海岸上该物种的海水养殖时，应考虑到这些结果。

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