Animal fat
Wet-rendered lard, from pork fatback. | |
| Fat composition | |
|---|---|
| Saturated fats | |
| Total saturated | 38–43%: Palmitic acid: 25–28% Stearic acid: 12–14% Myristic acid: 1% |
| Unsaturated fats | |
| Total unsaturated | 56–62% |
| Monounsaturated | 47–50%: Oleic acid: 44–47% Palmitoleic acid: 3% |
| Polyunsaturated | Linoleic acid: 6–10% |
| Properties | |
| Food energy per 100 g (3.5 oz) | 3,770 kJ (900 kcal) |
| Melting point | backfat: 30–40 °C (86–104 °F) leaf fat: 43–48 °C (109–118 °F) mixed fat: 36–45 °C (97–113 °F) |
| Smoke point | 121–218 °C (250–424 °F) |
| Specific gravity at 20 °C (68 °F) | 0.917–0.938 |
| Iodine value | 45–75 |
| Acid value | 3.4 |
| Saponification value | 190–205 |
| Unsaponifiable | 0.8% |
Animal fats are lipids derived from animals which are used by the animal for a multitude of functions, or can be used by humans for dietary, sanitary, and cosmetic purposes. Depending on the temperature of the fat, it can change between a solid state and a liquid (oil) state. Chemically, both fats and oils are composed of triglycerides. Although many animal parts and secretions may yield oil, in commercial practice, oil is extracted primarily from rendered tissue fats from livestock animals like pigs, chickens and cows. Dairy products yield animal fat and oil products such as butter.