Extraction and valorization of high-value phytochemicals from Nova Scotia seaweeds

该行业合作伙伴收获海藻并将其加工成广泛的农业、食品和饲料产品。为了扩大其产品线，该公司有兴趣获得海带属物种的知识，海带属是北方大西洋的一种棕色海藻。海带是快速生长的植物，因此被认为是生物质的可持续来源。它们具有丰富的植物化学成分，其中包括多糖，单宁和多不饱和脂肪酸。这些化合物中的许多具有生物活性，可能有益于植物，动物和人类健康。海带多糖是从海带中提取的一种复杂的支链多糖，具有刺激植物抵抗生物和非生物胁迫的作用。公司需要了解海带多糖分析及其在新斯科舍省的季节变化，以开发海带产品。事实上，以前的研究表明，海带中的海带多糖浓度根据季节，地点和其他非生物因素而变化。为实现这一目标，本项目提出了三个目标：1）建立、验证和推广海带多糖的提取和分析方法; 2）探索海带多糖含量的季节变化规律。来自大西洋加拿大; 3）预筛选海带样品的其他感兴趣的植物化学物质。

The industry partner harvests and processes seaweed into a broad range of products for agricutlrue, food and feed. In order to expand its product line, the company is interested in gaining knowledge on species from the genus Laminaria, a groupe of brown seaweed indigenous to Northern Atlantic. Laminaria are fast growing plants and are thus considered a sustainable source of biomass. They have a rich phytochemical composition that includes, among others, polysaccharides, tannins, and polyunsaturated fatty acids. Many of these compounds have bioactive properties that may benefit plant, animal and human health. Laminarin, a complex branched polysaccharide extracted from Laminaria seaweed, is known to stimulate plant defence agains biotic and abiotic stresses. Knowledge regarding laminarin analysis as well as its seasonal variation in Nova Scotia is necessary for the company to develop laminaria-based products. Indeed, previous studies have shown that laminarin concentration in Laminaria varies according to season, site and other abiotic factors. To achieve this goal, this project proposes three objectives: 1) Develop, validate and transfert a method for laminarin extraction and analysis; 2) Explore the seasonal variation of laminarin content in Laminaria spp. from Atlantic Canada; 3) Pre-screen Laminaria samples for other phytochemicals of interest.