VITAMIN K

vitamin K can be isolated from biological material by standard methods used to obtain physiologically active lipids.

 The isolation is always complicated by the small amount of desired product in the initial extracts. Initial extractions are usually made with the use of some type of dehydrating conditions, such as chloroform-methanol, or by first grinding the wet tissue with anhydrous sodium sulfate and then extracting it with acetone followed by hexane or ether. Large samples (kilogram quantities) of tissues can be extracted with acetone alone, and this extract can be partitioned between water and hexane to obtain the crude vitamin. Small samples, such as in vitro incubation mixtures or buffered subcellular fractions, can be effectively extracted by shaking the aqueous suspension with a mixture of isopropanol and hexane. The phases can be separated by centrifugation and the upper layer analyzed directly.

SOURCES OF VITAMIN K 

the plant-based  sources of vitamin k

1;kale

2. broccoli

3. lettuce

4. spinach

5. cauliflower

 the seven fruits that have vitamin k

1. kiwi

2. green apple

3. grapes

4. cabbage

5. green lemon

6. cucumber

7. avocado

the Five dairy products that have vitamin k

1. eggs

2. cheese

3. chicken

4. bacon

5. fish

the health benefits of vitamin k