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| GC-MS测定人乳及动物乳中支链脂肪酸组成 |
| Determination of branched-chain fatty acids composition in breast milk and animal milk using GC-MS |
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| DOI： |
| 中文关键词: 支链脂肪酸 人乳 动物乳 脂肪酸组成 |
| 英文关键词:BCFA breast milk animal milk fatty acid composition |
| 基金项目:国家自然科学基金资助项目(31701558) |
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| 中文摘要: |
| 支链脂肪酸（BCFA）是乳中微量但对婴幼儿的生长发育具有重要意义的生物活性成分。利用GC-MS对人乳和4种动物乳（牛乳、羊乳、牦牛乳、骆驼乳）中BCFA种类及含量进行测定。结果表明：5种乳中共有64种脂肪酸，其中含15种BCFA，17种饱和脂肪酸（SFA），18种单不饱和脂肪酸（MUFA）和14种多不饱和脂肪酸（PUFA）；BCFA含量呈现出很大的物种间差异，动物乳中的支链脂肪酸含量显著高于人乳（p<0.001），牛乳、牦牛乳、羊乳、骆驼乳和人乳中BCFA多为异构（iso）和反异构（anteiso）BCFA，含量分别为2.82%、4.90%、3.35%、8.00%和0.28%；人乳中BCFA受孕龄影响显著（p<0.01），足月儿乳母的母乳中含有丰富的BCFA。 |
| 英文摘要: |
| Branched-chain fatty acids (BCFA) are trace but important bioactive components in milk for the growth and development of infants and children. The BCFA compositions and contents of breast milk and four different animal milk (milk, yak milk, goat milk, camel milk)were analyzed by GC-MS. The results showed that a total of 64 fatty acids were identified from five types of samples, including 15 BCFA，17 saturated fatty acid （SFA）, 18 monounsaturated fatty acid （MUFA） and 14 polyunstatured fatty acid （PUFA）. BCFA content presented a great difference among species. BCFA contents were significantly higher in the animal milk than in breast milk (p<0.001). The relative contents of BCFA in milk, yak milk, goat milk, camel milk and breast milk were 2.82%, 4.90%, 3.35%, 8.00% and 0.28%, respectively, in which most of them were iso-BCFA and anteiso-BCFA. The gestational age had a significant effect on the content of BCFA in breast milk (p<0.01),and breast milk of full-term mothers was rich in BCFA. |
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