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Characterisation of oil oxidation,fatty acid,carotenoid, squalene and tocopherol components of hazelnut oils obtained from three varieties undergoing oxidation |
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| Authors: | Nana Cui Tiantian Zhao Zhentai Han Zhen Yang Guixi Wang Qinghua Ma Lisong Liang |
| Affiliation: | 1. State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091 China National Forestry and Grassland Innovation Alliance on Hazelnut, Beijing, 100091 China Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing, 100091 China Contribution: Data curation (equal), Formal analysis (lead), Investigation (equal), Methodology (supporting), Software (lead), Writing - original draft (lead), Writing - review & editing (equal);2. State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091 China National Forestry and Grassland Innovation Alliance on Hazelnut, Beijing, 100091 China Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing, 100091 China Contribution: Investigation (equal), Project administration (equal), Supervision (equal);3. Institute of Forest Ecology Environment and Protection, Chinese Academy of Forestry, Beijing, 100091 China Contribution: Methodology (equal), Resources (equal);4. State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091 China National Forestry and Grassland Innovation Alliance on Hazelnut, Beijing, 100091 China Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing, 100091 China Contribution: Investigation (equal);5. State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091 China National Forestry and Grassland Innovation Alliance on Hazelnut, Beijing, 100091 China Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing, 100091 China Contribution: Funding acquisition (equal), Project administration (equal), Supervision (equal);6. State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091 China |
| Abstract: | Hazelnut oils obtained from three varieties of Chinese hybrid hazelnuts (cv. ‘Liaozhen 3 (LZ)’, ‘Pingou 21’ (PG) and ‘Yuzhui’ (YZ)) were used to compare the lipid oxidation characteristics (peroxide value, p-anisidine value and conjugated diene value), fatty acid profiles and major active components (squalene, carotenoids and tocopherols) under oxidation condition at 60 °C for 40 days, in addition, the molecular structure changes in the three hazelnut oils were monitored by Raman spectroscopy. The lipid oxidation of the three hazelnut oils had similar tendencies, and the oxidation rate was slower in the early stage and faster in the later stage. Polyunsaturated fatty acids (PUFAs) tended to decrease mainly due to the decrease in linoleic acid. LZ had higher contents of tocopherol, carotenoids and PUFAs than the other varieties, while YZ owned the highest content of squalene. Tocopherol and carotenoids of the three hazelnut oils showed easy loss, while squalene was relatively stable. Raman spectroscopy can effectively indicate the degree of oxidation and carotenoid levels of hazelnut oil. This study can provide a scientific basis for variety selection in planting and utilisation of active ingredients for the hazelnut industry. |
| Keywords: | Active component hybrid hazelnut lipid oxidation oil Raman spectroscopy |