Document Detail

Free and glycosylated sterol bioaccumulation in developing Cycas micronesica seeds.
MedLine Citation:
PMID:  20157628     Owner:  NLM     Status:  Publisher    
The bioaccumulation of free and glycosylated forms of stigmasterol and beta-sitosterol were determined from Cycas micronesica K.D. Hill seeds throughout seed ontogeny. Per-seed pool of the four compounds increased linearly from 2 to 24 months, indicating no developmental period elicited a major shift in the rate of bioaccumulation. The slopes were not homogeneous, signifying a change in relative sterol profile concomitant with seed maturation. This shift was in favour of the glucosides, as their rate of accumulation exceeded that of the free sterols. Stigmasterol content exceeded that of beta-sitosterol, but ontogeny did not influence the ratio of these dominant sterols. The quantity and quality of sterol exposure during consumption of foods prepared from gametophytes by humans is strongly influenced by age of harvested seeds. Results are critical for a further understanding of the link between human neurodegenerative diseases and historical consumption of foods derived from the seed gametophyte tissue.
Thomas E Marler; Christopher A Shaw
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Publication Detail:
Journal Detail:
Title:  Food chemistry     Volume:  115     ISSN:  0308-8146     ISO Abbreviation:  -     Publication Date:  2009 Jul 
Date Detail:
Created Date:  2010-7-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7702639     Medline TA:  Food Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  615     Citation Subset:  -    
Western Pacific Tropical Research Center, University of Guam, UOG Station, Mangilao, Guam 96923, USA.
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Grant Support
R01 NS051723-04//NINDS NIH HHS

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