Safety assessment of lutein and zeaxanthin (Lutemax 2020): subchronic toxicity and mutagenicity studies - PubMed (original) (raw)
. 2011 Nov;49(11):2841-8.
doi: 10.1016/j.fct.2011.08.011. Epub 2011 Aug 22.
Affiliations
- PMID: 21872637
- DOI: 10.1016/j.fct.2011.08.011
Safety assessment of lutein and zeaxanthin (Lutemax 2020): subchronic toxicity and mutagenicity studies
R Ravikrishnan et al. Food Chem Toxicol. 2011 Nov.
Abstract
Lutein and zeaxanthin, naturally occurring carotenoids, have shown to reduce the risk of cataracts and age-related macular degeneration. Lutemax 2020 is a lutein and zeaxanthin (including meso-isomer) enriched product obtained from Marigold flowers (Tagetes erecta L). The objective of the present study was to investigate adverse effects, if any, of Lutemax 2020 in acute and subchronic toxicity, and mutagenicity studies. In acute toxicity study in rats no lethality was noted at 2000 mg Lutemax 2020/kg body weight (bw). In the subchronic study, Wistar rats (10/sex/group) were administered (gavage) lutein/zeaxanthin concentrate at dose levels of 0, 4, 40 and 400mg/kg bw/day for 90-days. Compared with the control group, administration of lutein/zeaxanthin concentrate did not result in any toxicologically significant treatment-related changes in clinical observations, ophthalmic examinations, body weights, body weight gains, feed consumption, and organ weights. No toxicologically relevant findings were noted in urinalysis, hematology or clinical biochemistry parameters at the end of the treatment or recovery period. Terminal necropsy did not reveal any treatment-related gross or histopathology findings. The results of mutagenicity testing in Salmonella typhimurium did not reveal any genotoxicity. The no observed-adverse-effect level (NOAEL) for lutein/zeaxanthin concentrate was determined as 400mg/kg bw/day, the highest dose tested.
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