動(dòng)物油熬煉就是從動(dòng)物脂肪組織中提取油脂的過程。原理涉及脂肪的熔點(diǎn)和加熱后的物理變化，比如脂肪細(xì)胞破裂，油脂分離。流程包括原料預(yù)處理、加熱熬煉、分離雜質(zhì)、精煉等步驟。工藝有干法和濕法熬煉，或者分不同的動(dòng)物種類，比如牛油、豬油的不同處理方法。原料方面，各種動(dòng)物的脂肪組織，比如豬板油、牛脂肪、羊油等等，還有不同部位的脂肪，比如內(nèi)臟周圍的脂肪和皮下脂肪的區(qū)別，熬煉后分為“精煉食用級(jí)”“**寵物飼料級(jí)”“普通飼料級(jí)”

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.