动物油熬炼概括

动物油熬炼就是从动物脂肪组织中提取油脂的过程。原理涉及脂肪的熔点和加热后的物理变化，比如脂肪细胞破裂，油脂分离。流程包括原料预处理、加热熬炼、分离杂质、精炼等步骤。工艺有干法和湿法熬炼，或者分不同的动物种类，比如牛油、猪油的不同处理方法。原料方面，各种动物的脂肪组织，比如猪板油、牛脂肪、羊油等等，还有不同部位的脂肪，比如内脏周围的脂肪和皮下脂肪的区别，熬炼后分为“精炼食用级”“**宠物饲料级”“普通饲料级”

Animal fat refining is the process of extracting oll from animal adipose tissue. The principle involves

the melting point of fats and the physical changes that occur after heating, such as the rupture of fat cells

and the separalion of oils, The process includes steps such as raw material pretreatment, heating and

refining, separation of impurities, and further refining. The methods can be dry or wet refining, or various

treatment methods for different animal types, such as beef tallow and lard. Regarding raw materials, it

involves the fat tissues of various animals, such as lard, beef fat, sheep fat, etc., as well as different parts

of the fat, such as the fat surrounding internal organs and subcutaneous fat, which are classifed into

refined food grade", "premium pet feed grade", and "ordinary feed grade" after refining.