Sbihi Hassen Mohamed, Nehdi Imededdine Arbi, Al-Resayes Saud Ibrahim
King Saud Univ., College of Science, Chemistry Dept., P.O. BOX 2454, Riyadh 1145, Saudi Arabia.
J Food Sci. 2014 May;79(5):C795-801. doi: 10.1111/1750-3841.12467. Epub 2014 Apr 22.
Seed oils with high polyunsaturated fatty acid content are used in various industries including the food and pharmaceutical industries. White mahlab (Prunus mahaleb L.) seed was found to contain 31% oil. The oil was highly polyunsaturated and abundant in α-eleostearic (38.32%), oleic (31.29%), and linoleic (22.96%) acids, which together comprised 93.91% of the total fatty acids. The α-eleostearic acid was identified and characterized based on (1)H-NMR, UV, and FTIR spectroscopy. The oil was characterized by a relatively high quantity of tocopherols with γ-tocopherol as the major tocopherol isomer. The physicochemical characteristics of the white mahlab seed and seed oil were also determined. The thermogravimetric analysis indicated that the oil was thermally stable up to 350 °C and began to decompose at 520 °C. This study demonstrated that these seeds may be reused and their oil incorporated into other food products, a beneficial practice considering that the compounds present in the seeds and oils have positive effects on human health.
In this study, mahlab seed oil was found to have potentials to become a new edible oil source as it contained a high level of polyunsaturated fatty acids especially, α-eleostearic acid, which is a conjugated fatty acid rarely found in vegetable oils and has a beneficial effects on human health.
富含多不饱和脂肪酸的种子油被用于包括食品和制药行业在内的各种行业。发现白马哈利布（Prunus mahaleb L.）种子含油31%。该油高度不饱和，富含α-桐酸（38.32%）、油酸（31.29%）和亚油酸（22.96%），这三种酸共占总脂肪酸的93.91%。基于氢核磁共振（¹H-NMR）、紫外（UV）和傅里叶变换红外光谱（FTIR）对α-桐酸进行了鉴定和表征。该油的特征是生育酚含量相对较高，其中γ-生育酚是主要的生育酚异构体。还测定了白马哈利布种子和种子油的理化特性。热重分析表明，该油在350℃以下热稳定，在520℃开始分解。这项研究表明，这些种子可以再利用，其油可以掺入其他食品中，考虑到种子和油中存在的化合物对人体健康有积极影响，这是一种有益的做法。
在本研究中，发现马哈利布种子油有潜力成为一种新的食用油来源，因为它含有高水平的多不饱和脂肪酸，尤其是α-桐酸，这是一种在植物油中很少见的共轭脂肪酸，对人体健康有有益影响。
