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Wiktionary
pectic acid

n. 1 an acidic derivative of a carbohydrate; the active constituent of pectin 2 (context chemistry English) a helical polymer of αD-galacturonic acid

WordNet
pectic acid

n. a complex acid that occurs in ripe fruit and some vegetables

Wikipedia
Pectic acid

Pectic acid, also known as polygalacturonic acid, is a water-soluble, transparent gelatinous acid existing in ripe fruit and some vegetables. It is a product of pectin degradation in plants, and is produced via the interaction between pectinase and pectin (the latter being common in the wine-making industry).

Usage examples of "pectic acid".

The pectic acid contained can be extracted from the root and solidifies into a wholesome, appetizing jelly.