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Genotoxicity of dried Hoodia parviflora aerial parts.
MedLine Citation:
PMID:  23348409     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Hoodia parviflora is being developed commercially for use in weight loss food and dietary supplement products. Its effects are ascribed to a number of glycosides that have been shown to be present in plant extracts from several Hoodia species, the best known of which is H. gordonii. H. parviflora has been identified as an alternative to H. gordonii, and, as part of the process to develop H. parviflora, in vitro genotoxicity tests, as recommended by recent European Food Safety Authority guidance, were conducted on a dried powder preparation of H. parviflora aerial parts. The preparation was tested for reverse mutation at doses up to 5,000 μg/plate in Salmonella typhimurium strains TA98, TA100, TA1535, and TA1537, and in Escherichia coli WP2 uvrA TA, both in the presence and in the absence of an exogenous source of metabolic activation (rat liver S9). In addition, the dried powder was evaluated in an in vitro cytotoxicity chromosome aberration assay using human lymphocytes. Test conditions included both a 4 (up to 2,500 μg/mg) and 44-hour exposure period (up to 1,000 μg/mg) and the incorporation of an exogenous source of metabolic activation (4-hour exposure only). H. parviflora dried powder was non-genotoxic in both in vitro assays.
Authors:
Barry Lynch; Annette Lau; Nigel Baldwin; Hana Hofman-Hüther; Mark R Bauter; Palma Ann Marone
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-21
Journal Detail:
Title:  Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association     Volume:  -     ISSN:  1873-6351     ISO Abbreviation:  Food Chem. Toxicol.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8207483     Medline TA:  Food Chem Toxicol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2013. Published by Elsevier Ltd.
Affiliation:
Intertek Cantox, Suite 308, 2233 Argentia Rd., Mississauga, Ontario, Canada L5N 2X7. Electronic address: judy.vowles@intertek.com.
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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