Vitamin K ( Naphthoquinones )
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5 Terms
Types of Vitamin K
Phylloquinone(K1)-made by plants Menaquinone(K2)-made by intestinal bacteria Menadione(K3)-synthetic form
Biological functions
Majeur role in calcium metabolism- Vitamin k interacts with Vitamin D to maintain calcium levels in bone, Auds blood clotting as helps to make clotting proteins such as prothrombin
Effects of deficiency
Delayed blood clotting, newborn babies may need supplements due to their restricted diet and lack of intestinal bacteria
Sources
Dark green vegetables- broccoli, cabbage. Peas, cereals, synthesised in small intestine by bacteria
Properties
Fat soluble, insoluble in water, heat stable, destroyed by UV light
Note 
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