Publications by authors named "Ryusei Yoshimura"
Background: Information on the contents of both vitamin B12 and folate in edible seaweeds is limited, of which deficiencies disrupt methionine biosynthesis to accumulate homocysteine as a risk factor of cardiovascular diseases.
Methods: Both vitamins were determined in commercially available edible seaweed products using high-performance liquid chromatography.
Results: Dried purple laver () products contain higher levels of vitamin B12 (approximately 30-60 μg/100 g dry weight) and folate compounds (approximately 880-1300 μg/100 g dry weight) than other seaweed products, such as kombu (), hijiki (), and wakame ().