摩洛哥石榴籽油的含油量、脂质谱和氧化稳定性

OCL Pub Date : 2021-01-18 DOI:10.1051/OCL/2020069
Ahmed Hajib, Issmail Nounah, H. Harhar, S. Gharby, B. Kartah, B. Matthäus, K. Bougrin, Z. Charrouf
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引用次数: 11

摘要

本研究的目的是测定摩洛哥石榴籽油的化学成分(脂肪酸、生育酚和甾醇),并评价其氧化稳定性。石榴籽含油量为22.63 g/100g干重。脂肪酸组成以共轭亚麻酸(CLnAs)为主(86.96 g/100g)。最主要的脂肪酸是果酸(75.1 g/100g),其次是癸酸(6.7 g/100g)和亚油酸(4.11 g/100g)。籽油中饱和脂肪酸含量较低,主要为棕榈酸(2.64 g/100g)和硬脂酸(1.73 g/100g)。甾醇标记物β-谷甾醇占种子油总甾醇含量的404.59 mg/100g。种子油中总生育酚含量为332.44 mg/100g。主要成分为γ-生育酚(190.47 mg/100g油),其次为α-生育酚(74.62 mg/100g油)和δ-生育酚(53.3 mg/100g油)。在120℃条件下,用rangimat加速法计算的诱导时间为3.6 h。在油脂方面,石榴籽油可被认为是工业、化妆品和医药用途的新多用途产品的宝贵来源。
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Oil content, lipid profiling and oxidative stability of “Sefri” Moroccan pomegranate (Punica granatum L.) seed oil
The aim of this study was to determine the chemical composition (fatty acids, tocopherols, and sterols) and evaluate the oxidative stability of Moroccan pomegranate (Punica granatum L.) seed oil. The oil content of pomegranate seed was 22.63 g/100g of dry weight. The fatty acid composition showed a dominance of conjugated linolenic acids (CLnAs) (86.96 g/100g). The most dominant fatty acid was punicic acid (75.1 g/100g), followed by catalpic acid (6.7 g/100g) and linoleic acid with amounts of 4.11 g/100g. The seed oil only contained a low level of saturated fatty acids with palmitic (2.64 g/100g) and stearic acids (1.73 g/100g) as main saturated fatty acids. The sterol marker, β-sitosterol, accounted for 404.59 mg/100g of the total sterol content in the seed oil. Total tocopherol content in seed oil was 332.44 mg/100g. γ-tocopherol (190.47 mg/100g oil) is the major constituent, followed by α-tocopherol (74.62 mg/100g oil) and δ-tocopherol (53.3 mg/100g oil). The induction time calculated by the Rancimat accelerated method was found to be of 3.6 h at 120 °C. In terms of oil, pomegranate seed oil may be considered as a valuable source for new multipurpose products with industrial, cosmetic and pharmaceutical uses.
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