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| Dynamic changes of oils and liposoluble active substances in Torreya grandis at late growth stage |
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| DOI： |
| KeyWord:Torreya grandis lipids fatty acid liposoluble active substances |
| FundProject:浙江省农业新品种选育专项“果品新品种选育”（2021C02066-11-1） |
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| Abstract: |
| In order to investigate the dynamic changes of oils and liposoluble active substances in Torreya grandis at late growth stage, the 20-year-old T.grandis was taken as the research object, the dynamic changes of oil content of T.grandis kernel and fatty acid components and liposoluble active substances (including squalene, campesterol, stigmasterol, β -sitosterol, α-tocopherol and β -tocopherol) in the oils at late growth stage were analyzed and determined, and the dynamic accumulation model of liposoluble active substances in oil was established. The results showed that the oils content of T.grandis kernel increased from (35.65±0.02)% to (54.50± 0.01)% at the late growth stage, and the composition and content of fatty acids in the oils changed significantly, in which oleic acid increased the most. The contents of squalene and phytosterol showed a decreasing trend, while tocopherol showed an increasing trend and the change trend slowed down before full maturity. The dynamic accumulation model of squalene, stigmasterol and β-sitosterol contents fit the reciprocal function equation, while the dynamic accumulation model of campesterol and tocopherol contents fit the polynomial function equation. In summary, all the liposoluble active substances dynamic change with the increase of oil in the late stage of T.grandis kernel growth. |
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