Journal of Nutritional Science and Vitaminology
Online ISSN : 1881-7742
Print ISSN : 0301-4800
ISSN-L : 0301-4800
Characterization and Bioavailability of vitamin B12-Compounds from Edible Algae
Fumio WATANABEShigeo TAKENAKAHiromi KITTAKA-KATSURAShuhei EBARAEmi MIYAMOTO
Author information
JOURNALS FREE ACCESS

2002 Volume 48 Issue 5 Pages 325-331

Details
Abstract

Substantial amounts of vitamin B12 were found in some edible algae (green and purple layers) and algal health food (chlorella and spirulina tablets) using the Lactobacillus delbrueckii subsp. lactis ATCC7830 microbiological assay method. Corrinoidcompounds were purified and characterized from these algae to clarify the chemical properties and bioavailability of the algal vitamin B12. True vitamin B12 is the predominate cobamide of green and purple layers and chlorella tablets. Feeding the purple layer to vitamin B12-deficient rats significantly improved the vitamin B12 status. The results suggest that algal vitamin B12 is a bioavailable source for mammals. Pseudovitamin B12 (an inactive corrinoid) predominated in the spirulina tablets, which are not suitable for use as a vitamin B12 source, especially for vegetarians.

Information related to the author
© the Center for Academic Publications Japan
Next article
feedback
Top