Citric acid is found naturally in citrus fruits but also produced synthetically as an additive. This article reviews citric acid, including its benefits, uses, and safety.

The molecular formula for citric acid is C 6 H 8 O 7. That means it contains six carbon atoms, eight hydrogen atoms, and seven oxygen atoms. It dissolves easily in water.

The third acid group of the citric acid then reacts with the hydroxyl group on the same molecule. A ring closure occurs in an intramolecular esterification (Fischer lactonization) reaction.

Thanks to the new cost-effective method, the rarely utilized sister molecule of the intensively used citric acid can benefit a sustainable circular economy – provided there is a market for it.

Use citric acid as you would more familiar seasonings—sparingly but often. With citric acid, a little goes a long way, so add it slowly and taste as you go.

Pastry chef Natasha Pickowicz explains how food-grade, GMO-free citric acid can improve all sorts of home cooking, from sprinkling it on popcorn to adding it to marinades and smoothies. You can ...

"If somebody's like 'I want to try citric acid,' and they grab a spoonful, that's a bad idea," Velez explains. "It can weaken the enamel of your teeth.