尿素包合富集羊毛脂中支链脂肪酸的研究

lthough branched-chain fatty acids (BCFA) are bioactive components of common food fats, little research has been performed on BCFA-enrichment technologies. In this study, lanolin acids were prepared from lanolin and its fatty acid composition was analyzed. The BCFA in lanolin were enriched by urea complexation. With content and recovery of BCFA as the indexes, the enrichment conditions were optimized by single factor experiment. Under optimal conditions (95% aqueous ethanol/urea ratio: 6, urea/FA ratio: 2, crystallization temperature: 4 C, crystallization time: 12 h), the content and recovery yield of BCFA from lanolin were obtained as 94.69% and 40.02%, respectively. In addition, the six major BCFAs of breast milk were found to be iso-C14:0, iso-C15:0, anteiso-C15:0, iso-C16:0, iso-C17:0, and anteiso-C17:0, whose contents in breast milk were more than 75%.