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A 90-day oral toxicity study of purple corn color, a natural food colorant, in F344 rats. 2008

Kyoko Nabae, and Shim-Mo Hayashi, and Mayumi Kawabe, and Toshio Ichihara, and Akihiro Hagiwara, and Seiko Tamano, and Yoko Tsushima, and Koji Uchida, and Takatoshi Koda, and Mikio Nakamura, and Kumiko Ogawa, and Tomoyuki Shirai
DIMS Institute of Medical Science, Inc., 64 Goura, Nishiazai, Azai-cho, Ichinomiya 491-0113, Japan.

A subchronic oral toxicity study of purple corn color (PCC), a natural food colorant, was performed with groups of 10 male and 10 female F344 rats fed the agent at dietary levels of 0%, 0.5%, 1.5% and 5.0% for 90 days. No mortalities occurred during the treatment period. No treatment-related changes in the body weight, food and water consumption, ophthalmology, hematology, organ weight data and histopathology were observed. Regarding general conditions and gross pathology, staining of fur and black feces were noted in rats of the 1.5% and 5.0% diet groups. Moreover, brown urine and black material in the stomach, small and large intestine were evident in rats receiving 5.0%. These changes were considered due to the anthocyanin content. On clinical chemistry analysis, total cholesterol, phospholipid and triglyceride were significantly lowered in both sexes of the 5.0% group, but these were not considered to be toxicologically significant. Thus, the No-observed-adverse-effect-level (NOAEL) was judged to be 5.0% in diet for both sexes (male: 3542 mg/kg/day, female: 3849 mg/kg/day) for PCC under the present experimental conditions.

UI MeSH Term Description Entries
D008297 Male Males
D009929 Organ Size The measurement of an organ in volume, mass, or heaviness. Organ Volume,Organ Weight,Size, Organ,Weight, Organ
D011916 Rats, Inbred F344 An inbred strain of rat that is used for general BIOMEDICAL RESEARCH purposes. Fischer Rats,Rats, Inbred CDF,Rats, Inbred Fischer 344,Rats, F344,Rats, Inbred Fisher 344,CDF Rat, Inbred,CDF Rats, Inbred,F344 Rat,F344 Rat, Inbred,F344 Rats,F344 Rats, Inbred,Inbred CDF Rat,Inbred CDF Rats,Inbred F344 Rat,Inbred F344 Rats,Rat, F344,Rat, Inbred CDF,Rat, Inbred F344,Rats, Fischer
D004032 Diet Regular course of eating and drinking adopted by a person or animal. Diets
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D005260 Female Females
D005505 Food Coloring Agents Natural or synthetic dyes used as coloring agents in processed foods. Coloring Agents, Food,Food Colorants,Agents, Food Coloring,Colorants, Food
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000872 Anthocyanins A group of FLAVONOIDS derived from FLAVONOLS, which lack the ketone oxygen at the 4-position. They are glycosylated versions of cyanidin, pelargonidin or delphinidin. The conjugated bonds result in blue, red, and purple colors in flowers of plants. Anthocyanidin,Anthocyanidins,Anthocyanin,Leucoanthocyanidins
D012449 Safety Freedom from exposure to danger and protection from the occurrence or risk of injury or loss. It suggests optimal precautions in the workplace, on the street, in the home, etc., and includes personal safety as well as the safety of property. Safeties

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