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Changes in the levels of catechol oxidase and laccase activity in developing peaches
Author(s) -
Harel E.,
Mayer A. M.,
Lerner H. R.
Publication year - 1970
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740211012
Subject(s) - catechol , laccase , catechol oxidase , chemistry , oxidase test , horticulture , polyphenol oxidase , enzyme , specific activity , food science , biochemistry , biology , peroxidase
Catechol oxidase and laccase activity and the content of o ‐diphenols were followed in developing peaches from 2 weeks after fruit set to harvest time. Catechol oxidase activity in the soluble fraction drops sharply during the first few weeks and remains low until harvest time. Laccase activity rises from a very low level in the first 3 months to a level higher than that of catechol oxidase at harvest time. Catechol oxidase activity in a paniculate fraction and o ‐diphenols content per fruit, each show a peak during fruit development The peak in o ‐diphenols content precedes that of catechol oxidase activity.