Occurrence of Coenzyme Forms of Vitamin B12 in a Cultured Purple Laver (Porphyla yezoensis)

Shigeo TAKENAKA; Keiko TAKUBO; Fumio WATANABE; Toshihiko TANNO; Shingo TSUYAMA; Yoshihisa NANANO; Yoshiyuki TAMURA

doi:10.1271/bbb.67.2480

Food & Nutrition Science Notes

Occurrence of Coenzyme Forms of Vitamin B₁₂ in a Cultured Purple Laver (Porphyla yezoensis)

Shigeo TAKENAKA, Keiko TAKUBO, Fumio WATANABE, Toshihiko TANNO, Shingo TSUYAMA, Yoshihisa NANANO, Yoshiyuki TAMURA

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Keywords: vitamin B₁₂, cobalamin, coezymes, biosynthesis, purple laver

JOURNAL FREE ACCESS

2003 Volume 67 Issue 11 Pages 2480-2482

DOI https://doi.org/10.1271/bbb.67.2480

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Abstract

Porphyra yezoensis (Susabinori, an edible purple laver), which was cultured aseptically for 12 weeks and then lyophilized, contained 50±2 μg/g of vitamin B₁₂ per 100 g dry weight. Coenzyme forms of vitamin B₁₂ (about 60% of the total vitamin B₁₂) were found in the cultured purple laver aseptically, which may have the ability to biosynthesize the coenzymes.

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