... cholesterol and othersterols, squalene, carotenoids and vitamins a, d, e and k.Thesaponifiable lipids are triacylglycerols (and mono- and diacyl-glycerols) and phospholipids, which can be extracted into ... during life and are conse-quently associated with the ageing process.lipoic acid 1,2-Dithiolane-3-valeric acid (6,8-thioctic acid),coenzyme in the oxidative decarboxylation of pyruvate, - ketoglutarate ... pyruvate, - ketoglutarate and branched-chain keto-acids. Not a dietaryessential.lipolysis Hydrolysis of triacylglycerols to mono- and diacylglyc-erols, glycerol and free fatty acids, catalysed...