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| Effects of harvest time and treatment methods on nutrient accumulation of oil-tea camellia seed and its oil |
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| KeyWord:oil-tea camellia seed harvest treatment nutritional quality active ingredient |
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| Abstract: |
| The effects of different harvest time and treatment methods on nutritional quality of oil-tea camellia seed and its oil were comparatively analyzed to study the dynamic regulation of nutrient accumulation during the mature of oil-tea camellia seed and determine the optimal harvest time and postharvest treatment method.The results showed that in Zhejiang province and similar climate areas，the appropriate harvest time of common oil-tea camellia seed was in the end of October，and premature harvest or too late to pick up the ground seed could both lead to the increase of acid value and peroxide value of oil-tea camellia seed oil. Premature harvest could reduce the contents of oleic acid，squalene，β-sitosterol and vitamin E in oil-tea camellia seed oil. Compared with the sample harvested on October 7th，the kernel rate and crude fat content in oil-tea camellia seed harvested on October 28th were increased by 1980% and 38.03% respectively，and the contents of oleic acid，squalene， β-sitosterol and vitamin E in the oil increased by 2.52%，64.7%，108.5% and 22.7% respectively，while the acid value and peroxide value decreased by 57% and 36% respectively. The green shell should be removed from harvested oil-tea camellia fruit in time and be dried in the sun or at low temperature in rainy days as soon as possible，and the traditional retting should be avoid to prevent the deterioration of oil quality. |
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