摘要
以婴儿配方奶粉乳液为模型,采用体外消化模型研究单双脂肪酸甘油酯和磷脂复配对脂溶性营养素(维生素D、类胡萝卜素)生物可给性的影响。结果表明,在小肠消化过程中,单双脂肪酸甘油酯和磷脂的添加能显著提高奶粉模型乳液体系中脂溶性营养素(维生素D等)的胶束化,并有效提升其生物可给性,有利于促进脂溶性营养素的吸收效率和生物利用率,使其消化行为更为接近母乳。同时,不同组成结构单双脂肪酸甘油脂的添加均可提升脂溶性营养素的生物可给性,其中油酸结构的存在对脂溶性营养素生物可给性的提升效果最佳。
In this study,the in vitro digestion model was used for investigating the impacts of the application of Mono-, Diglyceride(MDG)and phospholipid(PL)in the infant formula model emulsions on the bioaccessibility of lipophilic nutrients(vitamin D,carotenoids)contained in the formula.The addition of MDG/PL were found to significantly facilitate the micellization of lipophilic nutrients contained in the infant formula-based emulsion system at the simulated small intestine stage and led the digestion behavior more similar to human breast milk.The higher micellization rate resulted in higher absorption efficiency and higher bioavailability of liphophilic nutrients in the infant formula.Furthermore,the structures of MDG also impacted the bioaccessibility of lipophilic nutrients contained in the formula and the results indicated that the presence of oleic acid structure in the MDG molecules showed the higher effectiveness on enhancing the bioaccessibility of lipophilic nutrients.
作者
胡俊杰
李艳
崔欢欢
HU Jun-jie;LI Yan;CUI Huan-huan(College of Food Science&Technology,Huazhong Agricultural University,Wuhan,Hubei 430070,China)
出处
《食品与机械》
北大核心
2020年第9期33-37,42,共6页
Food and Machinery
基金
中国食品科学技术学会食品科技基金—雅培食品营养与安全专项科研基金(编号:2019-07)
国家自然科学基金面上项目(编号:31972976)。
