Chemical composition analysis of seed oil from five wild almond species in China as potential edible oil resource for the future
Chemical composition analysis of seed oil from five wild almond species in China as potential edible oil resource for the future
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DOI：
10.1016/j.sajb.2018.11.009
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发表时间：
2019-03-01
影响因子：
3.1
通讯作者：
Xu, X-Q
中科院分区：
文献类型：
--
作者：
Wang, W.;Wang, H-L;Xu, X-Q
野生杏仁的遗传资源对其油脂化学成分和用途的研究还不够重视。本文对5种野生扁桃（Prunus tangutica， P. peddunculata， P. mongolica， P. tenella和P. triloba）种子油的脂肪酸、维生素E、甾醇和氧化稳定性进行了分析。种子含油量为43.6% ~ 50.4%，多不饱和脂肪酸含量较高（93.0% ~ 97.9%）。主要脂肪酸为油酸和亚麻酸，檀香的含量为17.0%，蒙古香为31.1%。在每个测试样品中检测到四种生育酚，其优势同源物为α和β。总生育酚含量为433.9 ~ 682.8 mg/kg，不同种属的组成比例不同。油类甾醇含量为303.5 ~ 378.5 mg/100 g，主要成分为-谷甾醇、δ(5)-阿芬那甾醇和油菜甾醇。而rangimat试验测定的油的稳定性为7.17 ~ 23.45 h，其中长柄藤油的稳定性最高。其氧化稳定性明显高于花生油、橄榄油等油脂。在进行主成分分析（一种用于物种真实性的潜在工具）后，发现了种间差异。本研究的野生杏仁油可被认为是一种潜在的人类食品食用植物油。(c) 2018年萨博。Elsevier B.V.版权所有。
The genetic resources of wild almond have not been paid enough attention for oil chemical components and uses. In the present study analyses concerning the composition of fatty acids, vitamin E, sterols, and oxidative stability of five wild almond species (Prunus tangutica, P. pedunculata, P. mongolica, P. tenella, and P. triloba) seed oils were performed. The oil content of seeds ranged from 43.6% to 50.4% and the content of polyunsaturated fatty acids was high (93.0%-97.9%). The predominant fatty acid was oleic acid and linolenic acid with contents from 17.0% for P. tangutica to 31.1% for P. mongolica. Four tocopherols, with predominance of homologs alpha and beta, were detected in each tested sample. Total tocopherol contents ranged from 433.9 to 682.8 mg/kg of oil, and the ratio of the composition of different species was different. The total amount of oil sterols ranged from 303.5 to 378.5 mg/100 g, wherein beta-Sitosterol,Delta(5)-avenasterol, and campesterol were the main constituents. While the stability of the oil measured by Rancimat test ranged from 7.17 to 23.45 h, and the highest was P. pedunculata. Its oxidation stability was apparently higher than that of peanut, olive oil, and other oils. After performing principal component analysis, a potential tool for species authenticity purposes, interspecies differences were found. The wild almond oil in this study can be considered as a potential edible vegetable oil in human food. (C) 2018 SAAB. Published by Elsevier B.V. All rights reserved.