Laboratory of Clinical Biochemistry, LR99ES11, Faculty of Medicine Tunis.
Laboratory of Environmental Science and Technologies, Higher Institute of Sciences and Technology of Environment, University of Carthage.
J Oleo Sci. 2024;73(6):865-874. doi: 10.5650/jos.ess24027.
Although peach kernels are rich in oil, there is a lack of information about its chemical and biological properties. Therefore, the purpose of this study was to determine the lipid profile, antioxidant capacity, and trypsin inhibitory propriety of peach oil extracted from two varieties (sweet cap and O'Henry) cultivated in Tunisia. The investigated peach kernel oil contains significant amount of unsaponifiable (2.1±0.5-2.8±0.2% of oil) and phenolic compounds (45.8±0.92-74.6±1.3 mg GAE/g of oil). Its n-alkane profile was characterized by the predominance of tetracosane n-C24 (47.24%) followed by tricosane n-C23 (34.43%). An important total tocopherol content (1192.83±3.1 mg/kg oil) has been found in sweet cap cultivar. Although rich in polyphenols and tocopherols, the tested oil did not display an inhibitory effect on trypsin. However, all peach oil samples showed effective antioxidant capacity and the highest values (86.34±1.3% and 603.50±2.6 μmol TE/g oil for DPPH test and ORAC assay, respectively) were observed for sweet cap oil. Peach oil has an excellent potential for application in the food and pharmaceutical industries as source of naturally-occurring bioactive substances.
尽管桃仁富含油脂，但关于其化学和生物学特性的信息却很匮乏。因此，本研究旨在确定从突尼斯种植的两个品种（甜桃和 O'Henry）中提取的桃仁油的脂质组成、抗氧化能力和胰蛋白酶抑制特性。研究发现，桃仁油含有大量不可皂化物质（2.1±0.5-2.8±0.2%的油）和酚类化合物（45.8±0.92-74.6±1.3 mg GAE/g 的油）。其正烷烃图谱以二十四烷 n-C24（47.24%）为主，二十三烷 n-C23（34.43%）次之。甜桃品种中发现了大量的总生育酚（1192.83±3.1 mg/kg 油）。尽管桃仁油富含多酚和生育酚，但对胰蛋白酶没有抑制作用。然而，所有桃仁油样品均表现出有效的抗氧化能力，其中甜桃油的 DPPH 测试和 ORAC 测定的最高值分别为 86.34±1.3%和 603.50±2.6 μmol TE/g 油。桃仁油作为天然生物活性物质的来源，具有极好的应用于食品和制药工业的潜力。
