Ethylene-enhanced chlorophyll degradation in the peel of banana fruits (Musa sapientum L.) was measured in vivo, with a Minolta chromometer. N, N-Dimethylformamide was used for chlorophyll extraction from peel slices. (L+b)/2+a value is useful as a color index during degreening, based on the high correlation coefficients between extracted chlorophyll concentration and Hunter's color index.The ethylene-enhanced chlorophyll degradation in vivo is inhibited by 2, 2'-bipyridyl, 1, 10-phenanthroline, bathophenanthroline disulfonic acid, NaN3 and ascorbate, but not by N-ethylmaleimide, DIECA, dithiothreitol, monoiodoacetate and KCN. PCMB, EDTA, Tiron and hydroquinone had a weak inhibitory effect.The possible in vivo participation of Fe2+(Fe3+) and 02(02-) requiring enzyme as a key system in the chlorophyll degradation process is discussed
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Ma et al. (1997) studied this question.