OFI SF7 Exploration and Preservation of the Nutritional Value and Bioactive Compounds of Atlantic Seaweed Species

OFI SF7 大西洋海藻物种营养价值和生物活性化合物的探索和保存

• 批准号: 576782-2022
• 负责人: Dave, DeepikaDD
• 金额: $ 2.19万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=753468
• 关键词: OFI; SF7; Exploration; Preservation; Nutritional

Brown algae such as Alaria esculenta (wing kelp) and Saccharina latissima (sugar kelp) are distributed onboth sides of the North Atlantic Ocean. They are an excellent source of proteins (3-11%), lipids (2-6%), polysaccharides (40-60%), and minerals (18-35%) and other bioactive compounds, including polyphenols and pigments (e.g., fucoxanthin). However, this information is mostly available on the seaweed species along the Atlantic coast of Europe, mainly Norway, and thus, the nutritional composition of seaweeds on the Atlantic coast of Canada, including Newfoundland, is of great interest. In Atlantic Canada, seaweeds were traditionally harvested for fertilizer and animal feed; however, recently, there has been mounting interest in commercializing kelp resources into functional food, cosmetic, pharmaceutical, and nutraceutical products. Seaweeds contain higher iodine and moisture, so it is critical to develop pre-treatment methods prior to their high-end utilization, such as efficient drying techniques for facilitating transportation and preserving nutritional value and bioactivities. In addition, the application of pre-treatments on several seaweed species not only recovered the nutritional contents but also reduced the iodine content. Therefore, the proposed project is set to conduct a scientific assessment and preliminary investigation of the nutritional composition of different Atlantic seaweed species. Specifically, the effect of pre-treatments such as high-pressure processing (HPP) and drying techniques (hot air and freeze-drying) on the nutritional composition (amino acids, polyunsaturated fatty acids, polysaccharides, ash, fucoxanthin, and phenolics) will be assessed. The potential of seaweeds for value-added products will be identified based on the best method for bioactive compound preservation and scale-up recommendations.

褐藻如Alaria esculenta（翅海带）和Alaria latissima（糖海带）分布在北大西洋两岸。它们是蛋白质（3-11%）、脂质（2-6%）、多糖（40-60%）和矿物质（18-35%）以及其他生物活性化合物（包括多酚和色素（例如，岩藻黄质）。然而，这一信息主要是关于沿着欧洲大西洋海岸的海藻物种，主要是挪威，因此，在加拿大大西洋海岸，包括纽芬兰的海藻的营养成分是非常感兴趣的。在加拿大大西洋沿岸，海藻传统上被收获用于肥料和动物饲料;然而，最近，人们对将海带资源商业化为功能性食品，化妆品，药品和营养产品的兴趣越来越大。海藻含有较高的碘和水分，因此在其高端利用之前开发预处理方法至关重要，例如有效的干燥技术，以便于运输并保持营养价值和生物活性。 此外，对几种海藻进行预处理不仅恢复了营养成分，而且降低了碘含量。因此，拟议项目将对不同大西洋海藻物种的营养成分进行科学评估和初步调查。具体而言，将评估预处理如高压处理（HPP）和干燥技术（热空气和冷冻干燥）对营养组合物（氨基酸、多不饱和脂肪酸、多糖、灰分、岩藻黄质和酚类）的影响。海藻作为增值产品的潜力将根据生物活性化合物保存的最佳方法和扩大规模的建议来确定。