摘要
用异丙醇对猪油进行分提，以获得在常温下能保持液态的猪油。采用二次通用旋转试验设计，对猪油的分提条件进行了优化。结果表明：在冷却速率7℃／h、异丙醇用量200mL（以100g猪油为基准）、养晶时间15h的条件下，分提效果最好，液态猪油得率达78．98％；所得液态猪油的碘值（I）为80．96g,／100g，不饱和脂肪酸含量为68．44％，与原料猪油相比分别提高了23．45％和22．21％；所得液态猪油的胆固醇含量为0．368mg／g，与原料猪油相比降低了63．64％。
Isopropyl alcohol was used for lard fractionation so as to achieve the lard olein at room tempera- ture. The fractionation technology was optimized by quadratic general rotary design. The results showed that the optimal fractionation conditions were obtained as follows： cooling rate 7℃/h, isopropyl alcohol amount 200 mL（ based on 100 g lard）, crystallization time 15 h. Under the optimal conditions, the yield of lard olein was 78.98%. Compared with the raw lard, the iodine value （80.96 gI/100 g） and the con- tent of unsaturated fatty acids （68.44%） of lard olein increased by 23.45% and 22.21%, and the cho- lesterol content （0. 368 mg/g ）decreased by 63.64%.
出处
《中国油脂》
CAS
CSCD
北大核心
2015年第B10期67-69,共3页
China Oils and Fats
基金
浙江省重大科技专项重点农业项目（2013C02020-1）
关键词
液态猪油
异丙醇
分提
二次通用旋转试验设计
lard olein
isopropyl alcohol
fractionation
quadratic general rotary design
