Aldehydes and ketones are compounds with carbonyl groups that play an important role in our foods. Oxidation of food Primary alcohol molecules can be oxidised into aldehydes and carboxylic acids ...

Aliphatic aldehydes and reducing sugars will form a yellow-to-red precipitate with Benedict's reagent, causing the blue solution to appear green-to-red. This reaction can be used as a test for such ...

The aldehydes in reducing sugars will reduce silver ion from Tollen's reagent to metallic silver, leaving a reflective mirror on the inside of a flask.