Effects of Process Methods on Physicochemical Property and Nutrient Content of Tea Oil
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Abstract
Three process methods (supercritical CO2 extraction, cold pressing,spiral pressing) were applied to prepare oil-tea camellia seed oil. The physicochemical property and nutritional materials of the oil, such as acid value, peroxide value, iodine value, colour value, and the content of vitamin E, β-carotene, squalene, β-sitosterol, total phosphorus and fatty acid, were investigated. The results showed that the spiral pressed oil had the highest acid value and peroxide value which were significant higher than that of the oil extracted by the other methods. The contents of vitamin E, β-carotene, squalene, and β-sitosterol in supercritical CO2 extracted oil was the highest, while the content of total phosphorus in cold pressing extracted oil was the highest which was significant higher than that of supercritical CO2 extracted oil.
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