食用油脂是人们每日膳食中不可缺少的重要组成部分,是供给人体热能的三大营养素之一,并且是提供人体所需的必需脂肪酸、脂溶性维生素及磷脂的重要来源。食物在煎、炒、烹、炸时,都离不开油脂。油脂可分为动物性、植物性两种。动物性脂肪包括猪油、牛 Edible oil is an indispensable part of the daily diet and is one of the three nutrients that supply human body heat energy. It is also an important source of essential fatty acids, fat-soluble vitamins and phospholipids needed by the human body. Food fried, fried, cooked, fried, are inseparable from the grease. Oil can be divided into animal, plant two. Animal fat includes lard, cow