Chlorophyll, a natural green pigment, takes part widely in the nutrition of humans. A high level of chlorophyll in especially green vegetables increases its importance in terms of biological functions and the possibility of being protective agents against several chronic diseases. Besides showing antioxidant activity, chlorophyll has antimutagenic–anticarcinogenic effects. Therefore, many investigations have been focussed on cancer prevention by chlorophyll and its derivatives to date. Moreover, chlorophyll might be used as a coloring agent in foods. However, processing and storage conditions change the structure of chlorophyll, which might lead to a change in product color and bioavailability.
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