Abstract
The effect of L-ascorbic acid on the chlorophyll a in the presence of free radical producing system during its autoxidation was studied and the following results were obtained.
1. Chlorophyll was decomposed by the presence of L-ascorbic acid and this decomposition was greatly accelerated by the presence of ascorbic acid and hydrogen peroxide together.
2. Ferrous and ferric ions promoted the decomposition of chlorophyll by ascorbic acid.
3. The fenton's system (hydrogen peroxide plus ferrous ion) and ferrous-EDTA system greatly promoted the decomposition of chlorophyll by ascorbic acid.
4. Thiourea could protect the decomposition of chlorophyll by ascorbic acid and also by the ascorbic acid-hydrogen peroxide system.
