malic acid

views updated May 29 2018

malic acid (2-hydroxybutanedioic acid) A crystalline solid, HOOCCH(OH)CH2COOH. L-malic acid occurs in living organisms as an intermediate metabolite in the Krebs cycle and also (in certain plants) in photosynthesis. It is found especially in the juice of unripe fruits, e.g. green apples.

A Dictionary of Biology

malic acid

views updated May 14 2018

malic acid A dicarboxylic acid that is formed during the citric acid cycle by the reversible hydration of fumaric acid.

A Dictionary of Plant Sciences MICHAEL ALLABY

malic acid

views updated Jun 11 2018

malic acid A dicarboxylic acid formed during the citric-acid cycle by the reversible hydration of fumaric acid.

A Dictionary of Zoology MICHAEL ALLABY

malic acid

views updated May 17 2018

malic acid Organic acid occurring in many fruits, particularly in apples, tomatoes and plums. Used as a food additive to increase acidity.

A Dictionary of Food and Nutrition DAVID A. BENDER

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Malic acid

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