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The rediscovered potential of seaweed dietary additives









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    Book (series)
    A guide to the seaweed industry 2003
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    At present, the total output of the world's seaweed industry amounts to around US$6 billion, with more than 8 million tonnes of wet seaweed used annually. Seaweeds are widely used as food but are also an important ingredient for the cosmetics industry. They also serve to produce hydrocolloids (alginate, agar and carrageenan), which are used as thickening and gelling agents. This document highlights the rising importance of seaweed farming and shows how an essential Asian food has becom e popular in North and South America as well as in Europe. The report will be useful to those who wish to know more about the seaweed industry, about the markets for commercial seaweeds and about the various sources and methods of production. It is written with a minimum of technical language and is designed to assist in making decisions concerning seaweeds and the seaweed industry.
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    Book (stand-alone)
    Genetic resources for farmed seaweeds
    Thematic background study
    2022
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    The increasing global population needs to source food from the ocean, which is a much greater area than the land. The ocean is rich with diversified flora and fauna, and both are sources of proteins, vitamins, minerals, phytohormones, and bioactive compounds. Thousands of species of macroalgae (seaweed) dominate the vegetation of the seafloor from the intertidal to the subtidal zone. The domestication of several economically important seaweed such as Saccharina, Undaria and Pyropia in China, Japan and the Republic of Korea, and Kappaphycus and Eucheuma in Indonesia, Malaysia, the Philippines and the United Republic of Tanzania led to the intensive commercial cultivation of these seaweeds. Except for the United Republic of Tanzania, the commercial farming of seaweed, both temperate and tropical species, is centred in Asia. Despite the presence of several economically important seaweeds outside Asia, commercial farming is practised only in a few of non-Asian countries. These include Chile for Gracilaria and Macrocystis (Buschmann et al., 2001); France for Palmaria palmata, Porphyra umbilicalis and Undaria pinnatifida (Netalgae); and Canada for Saccharina latissima in integrated multi-trophic aquaculture (IMTA) (Chopin et al., 2013) and Chondrus crispus. Trial cultivation of Saccharina spp. and P. palmata is now taking place in Western Europe. Seaweeds are farmed mainly for food such as sea vegetables and food ingredients (Bixler and Porse, 2011), as well as feed (Wilke et al., 2015; Norambuena et al., 2015). However, there is increasing interest in their use for biorefinery products that require a vast amount of biomass which must be farmed.

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