Fumio Watanabe

Summary

Affiliation: Tottori University
Country: Japan

Publications

  1. ncbi request reprint Characterization and bioavailability of vitamin B12-compounds from edible algae
    Fumio Watanabe
    Department of Health Science, Kochi Women s University, Kochi 780 8515, Japan
    J Nutr Sci Vitaminol (Tokyo) 48:325-31. 2002
  2. ncbi request reprint Vitamin B12 sources and bioavailability
    Fumio Watanabe
    School of Agricultural, Biological and Environmental Sciences, Faculty of Agriculture, Tottori University, 4 101 Koyama Minami, Tottori 680 8553, Japan
    Exp Biol Med (Maywood) 232:1266-74. 2007
  3. doi request reprint Biologically active vitamin B12 compounds in foods for preventing deficiency among vegetarians and elderly subjects
    Fumio Watanabe
    Division of Applied Bioresources Chemistry, The United Graduate School of Agricultural Sciences, Tottori University, Tottori 680 8553, Japan
    J Agric Food Chem 61:6769-75. 2013
  4. ncbi request reprint Characterization of vitamin B₁₂compounds in the wild edible mushrooms black trumpet (Craterellus cornucopioides) and golden chanterelle (Cantharellus cibarius)
    Fumio Watanabe
    School of Agricultural, Biological and Environmental Sciences, Tottori University, Tottori, Japan
    J Nutr Sci Vitaminol (Tokyo) 58:438-41. 2012
  5. ncbi request reprint Purification and characterization of corrinoid-compounds from the dried powder of an edible cyanobacterium, Nostoc commune (Ishikurage)
    Fumio Watanabe
    School of Agricultural, Biological, and Environmental Sciences, Tottori University, Tottori 680 8553, Japan
    J Nutr Sci Vitaminol (Tokyo) 53:183-6. 2007
  6. ncbi request reprint Characterization of a corrinoid compound in the edible (blue-green) alga, Suizenji-nori
    Fumio Watanabe
    School of Agricultural, Biological and Environmental Sciences, Tottori University
    Biosci Biotechnol Biochem 70:3066-8. 2006
  7. ncbi request reprint Characterization of corrinoid compounds from edible cyanobacterium Nostochopsis sp
    Eri Hashimoto
    School of Agricultural, Biological and Environmental Sciences, Tottori University, Tottori, Japan
    J Nutr Sci Vitaminol (Tokyo) 58:50-3. 2012
  8. pmc Vitamin B12 deficiency in Caenorhabditis elegans results in loss of fertility, extended life cycle, and reduced lifespan
    Tomohiro Bito
    Division of Applied Bioresources Chemistry, The United Graduate School of Agricultural Sciences, Tottori University, Tottori, Japan
    FEBS Open Bio 3:112-7. 2013
  9. ncbi request reprint Effect of vitamin B12-enriched thraustochytrids on the population growth of rotifers
    Masahiro Hayashi
    Department of Biological Production and Environmental Science, Faculty of Agriculture, University of Miyazaki, Japan
    Biosci Biotechnol Biochem 71:222-5. 2007
  10. ncbi request reprint Characterization of corrinoid compounds from a Japanese black tea (Batabata-cha) fermented by bacteria
    Hiromi Kittaka-Katsura
    Department of Food and Nutrition, Kyoto Women s University, Kyoto 605 8501, Japan
    J Agric Food Chem 52:909-11. 2004

Collaborators

Detail Information

Publications18

  1. ncbi request reprint Characterization and bioavailability of vitamin B12-compounds from edible algae
    Fumio Watanabe
    Department of Health Science, Kochi Women s University, Kochi 780 8515, Japan
    J Nutr Sci Vitaminol (Tokyo) 48:325-31. 2002
    ..Pseudovitamin B12 (an inactive corrinoid) predominated in the spirulina tablets, which are not suitable for use as a vitamin B12 source, especially for vegetarians. algal health food, bioavailability, cobalamin, edible algae, vitamin B12..
  2. ncbi request reprint Vitamin B12 sources and bioavailability
    Fumio Watanabe
    School of Agricultural, Biological and Environmental Sciences, Faculty of Agriculture, Tottori University, 4 101 Koyama Minami, Tottori 680 8553, Japan
    Exp Biol Med (Maywood) 232:1266-74. 2007
    ..Fortified breakfast cereals are a particularly valuable source of vitamin B(12) for vegans and elderly people. Production of some vitamin B(12)-enriched vegetables is also being devised...
  3. doi request reprint Biologically active vitamin B12 compounds in foods for preventing deficiency among vegetarians and elderly subjects
    Fumio Watanabe
    Division of Applied Bioresources Chemistry, The United Graduate School of Agricultural Sciences, Tottori University, Tottori 680 8553, Japan
    J Agric Food Chem 61:6769-75. 2013
    ....
  4. ncbi request reprint Characterization of vitamin B₁₂compounds in the wild edible mushrooms black trumpet (Craterellus cornucopioides) and golden chanterelle (Cantharellus cibarius)
    Fumio Watanabe
    School of Agricultural, Biological and Environmental Sciences, Tottori University, Tottori, Japan
    J Nutr Sci Vitaminol (Tokyo) 58:438-41. 2012
    ..cibarius contained vitamin B₁₂ or other corrinoid compounds that are inactive in humans, we purified a corrinoid compound using an immunoaffinity column and identified it as vitamin B₁₂ based on LC/ESI-MS/MS chromatograms...
  5. ncbi request reprint Purification and characterization of corrinoid-compounds from the dried powder of an edible cyanobacterium, Nostoc commune (Ishikurage)
    Fumio Watanabe
    School of Agricultural, Biological, and Environmental Sciences, Tottori University, Tottori 680 8553, Japan
    J Nutr Sci Vitaminol (Tokyo) 53:183-6. 2007
    ..These results suggest that the bacterial cells are not suitable for use as a vitamin B12 source, especially in vegetarians...
  6. ncbi request reprint Characterization of a corrinoid compound in the edible (blue-green) alga, Suizenji-nori
    Fumio Watanabe
    School of Agricultural, Biological and Environmental Sciences, Tottori University
    Biosci Biotechnol Biochem 70:3066-8. 2006
    ..The silica gel 60 TLC and reversed-phase HPLC patterns of the purified corrinoid compound were not identical to those of true vitamin B(12), but to those of pseudovitamin B(12) which is inactive for humans...
  7. ncbi request reprint Characterization of corrinoid compounds from edible cyanobacterium Nostochopsis sp
    Eri Hashimoto
    School of Agricultural, Biological and Environmental Sciences, Tottori University, Tottori, Japan
    J Nutr Sci Vitaminol (Tokyo) 58:50-3. 2012
    ..Vitamin B₁₂ content was significantly increased in the Nostochopsis cells (254.8±17.6 μg/100 g dry weight) grown in the vitamin B₁₂-supplemented medium...
  8. pmc Vitamin B12 deficiency in Caenorhabditis elegans results in loss of fertility, extended life cycle, and reduced lifespan
    Tomohiro Bito
    Division of Applied Bioresources Chemistry, The United Graduate School of Agricultural Sciences, Tottori University, Tottori, Japan
    FEBS Open Bio 3:112-7. 2013
    ..These phenotypes resemble the consequences of B12 deficiency in mammals, and can be induced in C. elegans in only 15 days. Thus, C. elegans is a suitable animal model for studying the biological processes induced by vitamin deficiency...
  9. ncbi request reprint Effect of vitamin B12-enriched thraustochytrids on the population growth of rotifers
    Masahiro Hayashi
    Department of Biological Production and Environmental Science, Faculty of Agriculture, University of Miyazaki, Japan
    Biosci Biotechnol Biochem 71:222-5. 2007
    ..Vitamin B12-enriched thraustochytrids, strain mh0186, enhanced the population growth of rotifers fed on the cells as sole feed...
  10. ncbi request reprint Characterization of corrinoid compounds from a Japanese black tea (Batabata-cha) fermented by bacteria
    Hiromi Kittaka-Katsura
    Department of Food and Nutrition, Kyoto Women s University, Kyoto 605 8501, Japan
    J Agric Food Chem 52:909-11. 2004
    ..The results indicate that the vitamin B(12) found in the fermented black tea is bioavailable in mammals...
  11. ncbi request reprint Purification and characterization of a corrinoid compound from Chlorella tablets as an algal health food
    Hiromi Kittaka-Katsura
    Department of Health Science, Hiroshima Prefectural Women s University, Hiroshima 734 8558, Japan
    J Agric Food Chem 50:4994-7. 2002
    ..The purified corrinoid compound was identified as vitamin B12, on the basis of silica gel 60 TLC, C18 reversed-phase HPLC, 1H NMR spectroscopy, and UV-Vis spectroscopy...
  12. ncbi request reprint Hypoxia-induced megaloblastosis in vitamin B12-deficient rats
    Shuhei Ebara
    Department of Applied Biological Chemistry, Osaka Prefecture University, Sakai, Osaka, Japan
    Br J Nutr 89:441-4. 2003
    ..These results indicate that a megaloblastic anaemia-like symptom is induced when the vitamin B12-deficient rats are exposed to hypoxia...
  13. ncbi request reprint Purification and characterization of a corrinoid-compound in an edible cyanobacterium Aphanizomenon flos-aquae as a nutritional supplementary food
    Emi Miyamoto
    Department of Health and Nutrition, Nagasaki International University, Sasebo, Japan
    J Agric Food Chem 54:9604-7. 2006
    ..The results suggest that the Aphanizomenon cells are not suitable for use as a vitamin B12 source, especially in vegans...
  14. ncbi request reprint Vitamin B12 deficiency results in the abnormal regulation of serine dehydratase and tyrosine aminotransferase activities correlated with impairment of the adenylyl cyclase system in rat liver
    Shuhei Ebara
    School of Human Science and Environment, University of Hyogo, Himeji, Hyogo 670 0092, Japan
    Br J Nutr 99:503-10. 2008
    ..These results suggest that vitamin B(12) deficiency results in decreases in SDH and TAT activities correlated with the impairment of the glucagon signal transduction through the activation of the adenylyl cyclase system in the liver...
  15. ncbi request reprint Occurrence of coenzyme forms of vitamin B12 in a cultured purple laver (Porphyla yezoensis)
    Shigeo Takenaka
    Department of Veterinary Sciences, Osaka Prefecture University, Sakai, Japan
    Biosci Biotechnol Biochem 67:2480-2. 2003
    ..Coenzyme forms of vitamin B(12) (about 60% of the total vitamin B(12)) were found in the cultured purple laver aseptically, which may have the ability to biosynthesize the coenzymes...
  16. ncbi request reprint Values of water-soluble vitamins in blood and urine of Japanese young men and women consuming a semi-purified diet based on the Japanese Dietary Reference Intakes
    Katsumi Shibata
    School of Human Cultures, The University of Shiga Prefecture, Hikone, Shiga 522 8533, Japan
    J Nutr Sci Vitaminol (Tokyo) 51:319-28. 2005
    ..In future, an experiment with various age groups and re-evaluation by repeated experiments will provide more accurate values...
  17. ncbi request reprint Occurrence of vitamin B12 in green, blue, red, and black tea leaves
    Hiromi Kittaka-Katsura
    Department of Food and Nutrition, Kyoto Women s Untiversity, Kyoto 605 8501, Japan
    J Nutr Sci Vitaminol (Tokyo) 50:438-40. 2004
    ....
  18. ncbi request reprint Uptake and physiological function of vitamin B12 in a photosynthetic unicellular coccolithophorid alga, Pleurochrysis carterae
    Emi Miyamoto
    Department of Health Science, Kochi Women s University, Japan
    Biosci Biotechnol Biochem 66:195-8. 2002
    ..2% of the vitamin B12 accumulated by the algal cells were recovered in the macromolecular fractions with Mr of 150 kDa, although the remaining vitamin B12 was found only in free vitamin B12 fractions...