Also known as Icelandic penicillium, it is widely distributed and mainly grows in rice, corn, and barley, producing penicillin island. The conidia stalks are short, generally 50-75um, branched and produced from aerial hyphae. The broom-shaped branches are bi-wheeled symmetrical. The small stalks are parallel and dense, 5-8 per cluster, shorter, with a sharp tip , The size is 7 ~ 9um31.8 ~ 7.2um. The conidia are elliptical, 2.2 ~ 3.0um33.0 ~ 3.5um, the wall thickness is smooth, producing short nodular conidia chains. It grows slowly on agar medium. After 14 days of suffocation, the colony has a diameter of 2.5 ~ 3cm. It has a significant ring zone and slight radial wrinkles. The colony is yellow-orange, orange-red, brown and dark green. According to the structure, it can be divided into Huang Tianjing and Cyclochlorin, both of which are liver toxic. Huang Tianjing is yellow hexahedral needle-like crystal, fat-soluble. Acute poisoning causes animal liver atrophy, slow Sexual poisoning causes liver fibrosis, cirrhosis or liver tumors. Infected mice with artificially contaminated rice of Penicillium islands, fed the 100% mildewed rice group for 3 to 8 days, most of them died of acute liver atrophy, and the 30% and 10% mildewed rice groups developed cirrhosis and diffuse liver atrophy after 300 days. . Cyclochlorin, also known as chlorinated peptides, white needle-like crystals, water-soluble. The toxic effect is similar to that of Huang Tianjing, but it is sudden, and the body temperature drops, the hair is erected, and the patient falls asleep during acute poisoning; liver congestion, hypertrophy, and sometimes small intestinal bleeding.
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