Marine Resources, Conservation and Technology, Marine Algae Lab, CFE-Centre for Functional Ecology-Science for People & Planet, Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal.
IMBRSea, Ghent University, Krijgslaan 281/S8, 9000 Ghent, Belgium.
Mar Drugs. 2024 Sep 25;22(10):432. doi: 10.3390/md22100432.
Seaweed polysaccharides are versatile both in their functions in seaweed physiology and in their practical applications in society. However, their content and quality vary greatly. This review discusses the main factors that influence the yield and quality of polysaccharides, specifically carrageenans and agars (sulfated galactans) found in red algae species (Rhodophyta). In addition, its historical, current, and emerging applications are also discussed. Carrageenan has been influenced mainly by photosynthetically active radiation (PAR) and nitrogen, while its relationship with temperature has not yet been replicated by recent studies. Agar's seasonal trend has also been found to be more ambiguous than stated before, with light, temperature, nutrients, and pH being influencing factors. In this review, it is also shown that, depending on the compound type, seaweed polysaccharides are influenced by very different key factors, which can be crucial in seaweed aquaculture to promote a high yield and quality of polysaccharides. Additionally, factors like the extraction method and storage of polysaccharides also influence the yield and quality of these compounds. This review also highlights the drawbacks and inadequacy inherent from the conventional (or current) extraction technology approaches.
海藻多糖在海藻生理学中的功能和在社会实际应用中都具有多样性。然而，它们的含量和质量差异很大。本综述讨论了影响多糖产量和质量的主要因素，特别是红藻（红藻门）中发现的角叉菜胶和琼脂（硫酸半乳糖）。此外，还讨论了其历史、当前和新兴的应用。角叉菜胶主要受光合有效辐射（PAR）和氮的影响，而其与温度的关系尚未被最近的研究复制。琼脂的季节性趋势也比之前所说的更为模糊，光、温度、营养和 pH 值都是影响因素。在本综述中还表明，根据化合物类型的不同，海藻多糖受到非常不同的关键因素的影响，这在海藻养殖中对于促进多糖的高产和高质是至关重要的。此外，多糖的提取方法和储存等因素也会影响这些化合物的产量和质量。本综述还强调了传统（或当前）提取技术方法所固有的缺点和不足。
