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KMID : 0665220160290030301
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Korean Journal of Food and Nutrition
2016 Volume.29 No. 3 p.301 ~ p.306
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A Study on Contents of Vitamin K1 in Local Agricultural Products
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Lee A-Reum
Kim Joo-Hee
Park Jae-Ho
Kim Young-Ho
Hong Eui-Yon
Kim Haeng-Ran
Choi Young-Min
Lee Jun-Soo
Eom Hyun-Ju
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Abstract
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Vitamin K (phylloquinone) is an essential cofactor in the synthesis of active blood-clotting factors II, VII, IX and X. Deficiency of vitamin K leads to inadequate activity of these factors, resulting in bleeding. In this study, we investigated vitamin K1 content of agricultural products that are widely and specifically grown in Korea including 9 leaves and vegetables, 16 fruits, and 11 cereals and specialty crops. Vitamin K1 analysis of the agro-samples was by a validated, modified, reversed phase-HPLC method with fluorescence detection after post-column derivatization. The vitamin K1 content ranged from 1.83 to 682.73 μg/100 g in leaves and vegetables, 0.17 to 28.22 μg/100 g in fruits, and ND to 279 μg/100 g in cereals and specialty crops. Among the 36 samples, high content of vitamin K1 were found in Gugija (Lycium chinense Miller) leaves (average 682.73 μg/100 g) and Hansan ramie leaves (average 423.12 μg/100 g); however, mushroom, amaranth and Chinese artichoke showed no detectable levels. The results of ourstudy provide reliable vitamin K1 content of Korean grown agricultural products that expand nutritional information and food composition database.
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KEYWORD
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vitamin K , phylloquinone , agricultural products , HPLC
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