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| Effect of storage time of oil-tea camellia seed on oil extraction by aqueous enzymatic method |
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| KeyWord:oil-tea camellia seed oil aqueous enzymatic method storage time nutritional component |
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| Abstract: |
| With pH 5, ratio of material to liquid 1∶?5, dosage of alpha amylase 1%, dosage of cellulase 1%, extraction time 3 h and extraction temperature 50?℃ as basic conditions, the effect of oil-tea camellia seed storage time on the extraction efficiency and quality of oil-tea camellia seed oil extracted by aqueous enzymatic method were studied. The results showed that storage time had a significant effect on the extraction efficiency and quality of oil-tea camellia seed oil. It was suggested that the oil-tea camellia seed should be treated within 1-3 months of storage. And the oil-tea camellia seed with storage time of about one month was the best, in which the extraction rate of oil-tea camellia seed oil was 916%. The crude oil-tea camellia seed oil was delicate fragrance and the astringent taste was light, and except water content the basic physicochemical indexes were superior to the national standard of the first grade squeezed oil-tea camellia seed oil. The contents of vitamin E, polyphenols and squalene in oil reached 321, 28 mg/kg and 178 mg/kg respectively. The fatty acid conversion of oil-tea camellia seed was basically completed at the post-ripening period and the content of oleic acid reached 79.69%. |
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