Although hazelnut oil is rich in nutrients,its quality is greatly affected by how it is processed.However,no studies to date have comprehensively analyzed the lipid composition of hazelnut oil using different processi...Although hazelnut oil is rich in nutrients,its quality is greatly affected by how it is processed.However,no studies to date have comprehensively analyzed the lipid composition of hazelnut oil using different processing methods.Here,we conducted a lipidomics analysis using UPLC-QTOF-MS to characterize the lipid composition of cold-pressed hazelnut oil(CPO),ultrasonic-assisted hexane hazelnut oil(UHO)and enzyme-assisted aqueous hazelnut oil(EAO).A total of 10 subclasses of 98 lipids were identified,including35 glycerolipids(GLs),56 glycerophospholipids(GPs)and 7 sphingolipids(SPs).The total lipid and GL content were the highest in CPO,GP content was the highest in UHO and the ceramide content in SPs was most abundant in EAO.Multivariate statistical analysis showed that the lipid profiles of hazelnut oil prepared with different processing methods varied.Twelve significantly different lipids(TAG 54:3,TAG 52:2,TAG54:4,TAG 54:2,TAG 52:3,TAG 54:5,DAG 36:2,DAG 36:4,DAG 36:3,PC 36:2,PA 36:2 and PE 36:3)were identified,and these lipids could potentially be used as biomarkers to distinguish between hazelnut oil subjected to different processing methods.Our results provide useful information for hazelnut oil applications and new insight into the effects of edible oil processing.展开更多
Coula edulis is non-timber forest product (NTFP) used in Africa for its hazelnuts, which contain edible seeds with a demonstrated nutritional potential. However, there have been very few scientific studies of this spe...Coula edulis is non-timber forest product (NTFP) used in Africa for its hazelnuts, which contain edible seeds with a demonstrated nutritional potential. However, there have been very few scientific studies of this species in the Republic of Congo. Thus, the aim of the current study was therefore to determine the fatty acid composition of the oil extracted from Coula edulis hazelnut seeds collected at random in the Republic of Congo. The oil was extracted using the Soxhlet method and its fatty acid composition was determined by gas chromatography. The extracted oil from Coula edulis hazelnut kernels is rich in monounsaturated fatty acids (95.28%), particularly oleic acid (94.5%), which classifies it as an oleic oil and gives it interesting nutritional and therapeutic properties. On the other hand, saturated fatty acids (4.15%) and polyunsaturated fatty acids (0.35%) are not well represented. Its low poly-unsaturated fatty acid content makes it more stable when stored at room temperature.展开更多
本研究以杂交品系平欧杂交榛为试验材料,利用超声波辅助无水乙醇提取榛子油,在单因素实验基础上,选择液料比、提取温度和提取时间为自变量,以榛子油提取率为响应值,采用二次回归旋转设计优化实验条件,利用气相色谱法分析榛子油中脂肪酸...本研究以杂交品系平欧杂交榛为试验材料,利用超声波辅助无水乙醇提取榛子油,在单因素实验基础上,选择液料比、提取温度和提取时间为自变量,以榛子油提取率为响应值,采用二次回归旋转设计优化实验条件,利用气相色谱法分析榛子油中脂肪酸组成。结果表明:以无水乙醇为提取溶剂,榛子粉过20目筛,液料比17∶1 m L/g,提取温度66℃,提取时间64 min,提取率可达58.99%,GC分析榛子油脂肪酸组成显示:榛子油的脂肪酸主要以不饱和脂肪酸为主,占脂肪酸总量的96%以上,其中尤以油酸为主,含量高达82.59%,亚油酸含量为12.58%。超声波辅助提取榛子油是一种有效的榛子油脂提取方法,具有实际应用价值。展开更多
基金supported by Key R&D Project of Liaoning Province,under Grant Research and Demonstration of Key Technologies for Deep Processing and Comprehensive Utilization of Northeast Hazelnuts(2020JH2/10200037)Service Local Project of Liaoning Province,under Grant Demonstration and Promotion of new deep-processing technology for comprehensive utilization of Northeast Hazelnuts(LSNFW201903)horizontal subject,under Grant Demonstration and Promotion of key technologies for transformation and deep processing of wild hazelnut forest in northwestern Liaoning(H2019388)。
文摘Although hazelnut oil is rich in nutrients,its quality is greatly affected by how it is processed.However,no studies to date have comprehensively analyzed the lipid composition of hazelnut oil using different processing methods.Here,we conducted a lipidomics analysis using UPLC-QTOF-MS to characterize the lipid composition of cold-pressed hazelnut oil(CPO),ultrasonic-assisted hexane hazelnut oil(UHO)and enzyme-assisted aqueous hazelnut oil(EAO).A total of 10 subclasses of 98 lipids were identified,including35 glycerolipids(GLs),56 glycerophospholipids(GPs)and 7 sphingolipids(SPs).The total lipid and GL content were the highest in CPO,GP content was the highest in UHO and the ceramide content in SPs was most abundant in EAO.Multivariate statistical analysis showed that the lipid profiles of hazelnut oil prepared with different processing methods varied.Twelve significantly different lipids(TAG 54:3,TAG 52:2,TAG54:4,TAG 54:2,TAG 52:3,TAG 54:5,DAG 36:2,DAG 36:4,DAG 36:3,PC 36:2,PA 36:2 and PE 36:3)were identified,and these lipids could potentially be used as biomarkers to distinguish between hazelnut oil subjected to different processing methods.Our results provide useful information for hazelnut oil applications and new insight into the effects of edible oil processing.
文摘Coula edulis is non-timber forest product (NTFP) used in Africa for its hazelnuts, which contain edible seeds with a demonstrated nutritional potential. However, there have been very few scientific studies of this species in the Republic of Congo. Thus, the aim of the current study was therefore to determine the fatty acid composition of the oil extracted from Coula edulis hazelnut seeds collected at random in the Republic of Congo. The oil was extracted using the Soxhlet method and its fatty acid composition was determined by gas chromatography. The extracted oil from Coula edulis hazelnut kernels is rich in monounsaturated fatty acids (95.28%), particularly oleic acid (94.5%), which classifies it as an oleic oil and gives it interesting nutritional and therapeutic properties. On the other hand, saturated fatty acids (4.15%) and polyunsaturated fatty acids (0.35%) are not well represented. Its low poly-unsaturated fatty acid content makes it more stable when stored at room temperature.
文摘本研究以杂交品系平欧杂交榛为试验材料,利用超声波辅助无水乙醇提取榛子油,在单因素实验基础上,选择液料比、提取温度和提取时间为自变量,以榛子油提取率为响应值,采用二次回归旋转设计优化实验条件,利用气相色谱法分析榛子油中脂肪酸组成。结果表明:以无水乙醇为提取溶剂,榛子粉过20目筛,液料比17∶1 m L/g,提取温度66℃,提取时间64 min,提取率可达58.99%,GC分析榛子油脂肪酸组成显示:榛子油的脂肪酸主要以不饱和脂肪酸为主,占脂肪酸总量的96%以上,其中尤以油酸为主,含量高达82.59%,亚油酸含量为12.58%。超声波辅助提取榛子油是一种有效的榛子油脂提取方法,具有实际应用价值。
