Acyl chlorides and carboxylic anhydrides react fastest, followed by aldehydes and ketones. Schiff bases can be obtained by reacting amines with ketones or aldehydes. Some aldehydes are substrates for aldehyde dehydrogenase enzymes which metabolize aldehydes in the body. They can react with aldehydes and ketones to produce alcohols. These include fusel oil, methanol, aldehydes, organic acids and esters. Taste and aroma compounds include sucrose, glucose, organic acids, terpenes, aldehydes and lactones. Dicarbonyls react with amines to produce Strecker aldehydes through Strecker degradation. Dermestids produce esters, and species of Elateridae produce fatty acid-derived aldehydes and acetates. This process is employed for the enantioselective hydrogenation of ketones, aldehydes, and imines. Oximes are usually generated by the reaction of hydroxylamine with aldehydes or ketones. This reaction causes the release of malodorous and highly volatile aldehydes and ketones. Compared to ketones and aldehydes, esters are relatively resistant to reduction. They are aldehydes or ketones with two or more hydroxyl groups. Analogous situations occur for other functional groups such as aldehydes and ketones. Sweetness may be connected to aldehydes and ketones, which contain a carbonyl group.