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    Topic review

    Potential of Brown Algae

    Subjects: Plant Sciences
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    Definition

    Brown algae have been part of the human diet for hundreds of years, however, in recent years, commercial and scientific interest in brown algae has increased due to the growing demand for healthier diet by the world population. Brown algae and its metabolites, such as carotenoids, polysaccharides, phlorotannins, and proteins, have been associated with multiple beneficial health effects for different diseases, such as cardiovascular diseases, one of the main causes of death in Europe.

    1. Introduction

    Seaweeds are macroalgae used in different sectors, such as agricultural, horticultural, cosmetics, and food industries. It has been recognized that the novel and potentially bioactive components that algae present make them a good source of healthy food[1][2] World seaweed production doubled between 2005 and 2015. Globally, in 2016, seaweed products were valued at USD 10.6 million, and it is estimated that in 2025 the value of global seaweed products will reach USD 26 million[3]. Asia and the Pacific region dominate 60% of the world algae market, followed by Europe and the Americas[3]. Seaweeds have been used as part of the human diet for thousands of years. Archaeological evidence shows that in Chile it has been used for the last 14,000 years[1], and in Japan and China, there are written records describing the use of seaweed that date back over 2000 years[4][5]. Nowadays, in Europe, seaweed consumption is increasing, not only because people are becoming interested in the uses of natural products, but also because it is seen as a healthy and nutritious “superfood”, which is sold preserved dry, fresh, frozen, canned, or salted[3][6]. Algae are used both as a food supplement and as an addition to functional food. Meat products, cereal-based products, and fermented functional foods, such as cheeses, are the main products in the market supplemented with algae[7]. Statistics from the 2012 global harvest demonstrated that 38% of the 23.8 million seaweed harvest was used for human consumption, without counting the consumption of hydrocolloids derived from algae as agars, alginates, and carrageenans[1][8]. Currently, more than 10,000 species of algae are known, but only about 200 species are consumed worldwide, with the brown algae species being the most consumed, followed by red algae species and then the green algae species[6][9]. Despite the considerable number of brown algae species consumed worldwide, under the European regulation there are only about 23 brown seaweed species authorized for food applications.

    Table 1. List of brown algae species for human food applications in Europe under the regulation (UE) 2015/2283 [10].

    Brown Algae Species
    Ascophyllum nodosum
    Alaria esculenta
    Eisenia bicyclis
    Fucus vesiculosus
    Fucus serratus
    Fucus spiralis
    Himanthalia elongata
    Laminaria digitata
    Saccharina japonica
    Saccharina latissima
    Saccharina longicruris
    Sargassum fusiforme
    Undaria pinnatifida

    The entry is from 10.3390/foods10020234

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