Malachite green in eels and fish imported from China and Taiwan. In 2006, the United States Food and Drug Administration (FDA) detected malachite green in seafood imported from China, among others, where the substance is also banned for use in aquaculture. In June 2007, the FDA blocked the importation of several varieties of seafood due to continued malachite green contamination. The substance has been banned in the United States since 1983 in food-related applications. It is banned in the UK, also. Animals metabolize malachite green to its leuco form. Being lipophillic (the leuco form has a log "P" of 5.70), the metabolite
The Malachite Box some information about the life, industry and culture of the Urals and which the author tried to include into every edition of the collection. Later versions contained more than 40 stories. Not all stories are equally popular nowadays. The most popular tales were written between 1936 and 1939: "The Mistress of the Copper Mountain" and its continuation "The Malachite Casket", "The Stone Flower" and its continuation "The Master Craftsman", "Silver Hoof", "Cat's Ears", "Sinyushka's Well", "The Manager's Boot-Soles". Among the later stories, "A Fragile Twig" (1940), "The Fire-Fairy" (1940), "Tayutka's Mirror" (1941), "Ivanko Krylatko" (1943), "That Spark of Life" (1943)