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Laminaria was harvested for food and 1949 yielded 40.3 metric tons of dry weight. [9] Laminaria need cold water to survive and can only live above 36° N latitude. [citation needed] In 1949, the Chinese started to commercially grow laminaria as a crop. This increased the production of dry weight to 6,200 metric tons.
Kombu is a loanword from Japanese.. In Old Japanese, edible seaweed was generically called "me" (cf. wakame, arame) and kanji such as "軍布", [3] 海藻 [4] or "和布" [5] were applied to transcribe the word.
The species has been cultivated in China, Japan, Korea, Russia and France. [5] It is one of the two most consumed species of kelp in China and Japan. [1] Saccharina japonica is also used for the production of alginates, with China producing up to ten thousand tons of the product each year. [6] S. japonica contains very high amounts of iodine.
Many countries today produce and consume laminaria products; the largest producer is China. Laminaria japonica, the important commercial seaweed, was first introduced into China in the late 1920s from Hokkaido, Japan. Yet mariculture of this alga on a very large commercial scale was realized in China only in the 1950s. Between the 1950s and the ...
Saccharina is a genus of 24 species of Phaeophyceae (brown algae). It is found in the north Atlantic Ocean and the northern Pacific Ocean at depths from 8 m to 30 m (exceptionally to 120 m in the warmer waters of the Mediterranean Sea and off Brazil).
Saccharina latissima is a yellowish brown colour with a long narrow, undivided blade that can grow to 5 metres (16 ft) long and 20 centimetres (8 in) wide. The central band is dimpled while the margins are smoother with a wavy edge, this is to cause greater water movement around the blades to aid in gas exchange.
In the 17th century, the English botanist John Gerard noted the use of seaweed to treat a wide variety of ailments. Fucoidan itself was not isolated and described until the early 1900s. [7] In 1913, Swedish Professor Harald Kylin became the first to describe the slimy film found on many seaweeds as ‘fucoidin’ or ‘fucoijin’.
Laminaria agardhii has many uses, ranging from traditional medicine to nutritional intake. Laminaria is high in iodine, a nutrient crucial for proper thyroid function. In addition to promoting thyroid health, members of the family Laminariaceae can be used to induce and aid in labor. Pieces of laminaria can be put in the cervix and water added.