脂肪球结构对婴儿胃肠道中乳脂消化的影响及机理研究
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1.Tocopherols in human milk: Change during lactation, stability during frozen storage, and impact of maternal diet
- 关键词:
- VITAMIN-E; COLD-STORAGE; FATTY-ACIDS; GUIDELINES; BANK
- Wei, Wei;Yang, Jie;Xia, Yuan;Chang, Chang;Sun, Cong;Yu, Renqiang;Zhou, Qin;Qi, Ce;Jin, Qingzhe;Wang, Xingguo
- 《International Dairy Sci-Tech and Innovation Conference》
- 2018年
- NOV, 2017
- Shanghai, PEOPLES R CHINA
- 会议
Tocopherols in human milk samples collected from 103 healthy mothers from China were determined. Samples were obtained at 1-7 d, 8-14 d and after 15 d postpartum. The maternal dietary intake of 24 h dietary recall was collected. Four tocopherol isomers (alpha-, beta-, gamma-, and delta-tocopherol) were measured by HPLC. The total tocopherol concentrations significantly decreased from 7.5 +/- 2.1 mg L-1 in colostrum to 3.8 +/- 1.4 mg L-1 in transitional milk and 3.1 +/- 1.4 mg L-1 in mature milk. The similar results were found for alpha- and gamma-tocopherols. However, the content of beta- and delta-tocopherols was almost constant. The four tocopherol isomers did not degrade during frozen storage (-20 degrees C and -80 degrees C) for 180 d. Total tocopherol content was significantly raised with the increase of fat intake in the maternal diet. (C) 2018 Elsevier Ltd. All rights reserved.
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