High Concentration of Vitamin K1 Proved in the Seaweeds and Sweet Potato Leaves
2003 Volume 50 Issue 2 Pages 63-66
Details
2003 Volume 50 Issue 2 Pages 63-66
By using a HPLC method, the presence of high concentration of vitamin K was confirmed in some seaweeds and sweet potato leaves. Particularly, it was remarkable in the most classical seaweeds of Fudaraku (Pachymeniopsis lanceolata) and Miru (Codium fragile), and sweet potato leaves of Beniazuma and Ayamurasaki.
The highest value (7.4mg vitamin K1/100g dry weight) detected in Benisatsuma was over than that of tea (Macchya) (4.4mg vitamin K1/100g) previously reported by Japanese Food Analysis Organization.
The water-solubility of a Benisatsuma extract (dry powder) was higher than that of the standard vitamin K1. It was also proved that vitamin K1 in this powder is much resistant against light decomposition.
