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| Influence of different species and origins on quality of oil-tea camellia seed oil in Guizhou |
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| KeyWord:oil-tea camellia seed oil species origin fatty acid composition active substance principal component analysis |
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| Abstract: |
| In order to explore the production adaptability of different camellia from Guizhou， the differences between native camellia species and Camellia oleifera were analyzed，and the influence of different origins on the quality of oil-tea camellia seed oil was studied, the oil contents in seed kernel of 2 species of camellia seeds (Camellia saluenensis and Camellia pitardii ) and Camellia oleifera from three origins(Guiyang, Pingtang and Ceheng), and the physicochemical properties，fatty acid composition, and active substance content of their oils were determined. The indexes were comprehensively evaluated by systematic cluster analysis and principal component analysis. The results showed that the oil contents of Camellia saluenensis seed and Camellia pitardii seed were 57.76% and 56.08% respectively, which were significantly higher than that of the Camellia oleifera seed (p<0.05). There was no significant difference in the content of unsaturated fatty acids in oil-tea camellia seed oil from different species and origins (p>0.05). The contents of saturated fatty acids in Camellia saluenensis seed oil and Camellia pitardii seed oil were higher (p<0.05). The contents of sterols, vitamin E, and total flavonoids in Camellia oleifera seed oil from Pingtang were the highest, reaching 354.63 mg/100 g, 84.02 mg/kg and 4.24 g/kg respectively. The Camellia saluenensis seed oil had the highest squalene content (145.63 mg/kg). The total polyphenol content in Camellia pitardii seed oil was the highest, reaching 208.69 mg/kg. Cluster analysis showed that Camellia saluenensis and Camellia pitardii were in the first category, the Camellia oleifera from Guiyang and Ceheng were in the second category, and Camellia oleifera from Pingtang was other category. The results of principal component analysis showed that Camellia pitardii had the highest scores, followed by Camellia saluenensis, and the seeds of Camellia pitardii and Camellia saluenensis were more suitable for the production and processing of oil-tea camellia seed oil. |
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