Cold-pressed oil extraction of camellia seeds

The tea oil camellia (Camellia oleifera Abel., Theaceae) is notable as an important source of edible oil (known as tea oil or camellia oil) obtained from its seeds in China. Today camellia oil with a high oleic acid content is coming more into the focus of interest since the fatty acid composition is more comparable to olive oil. The process of cold-pressed oil extraction of camellia seeds was introduced detailedly, including storage of raw material, dehulling, twin-screw pressing, and purification of crude oil. The physicochemical property of the cold-pressed camellia oil as compared to commercial refined oil was analyzed. The various quality indexes reached a high leve1.