Abstract:

The quality of tea-oil is better, but the extraction rate is lower with the preparation of press. To improved the extraction rate, the residual oil of seedcake was preparation with re-press. The results showed: With the high-temperature steam, the water rate of the seedcake increased from 9-10% to 15-16%. Any residual oil of the seedcake was extracted out effectively with the preparation of re-press. The extraction rate was increased from less than 85% to nearly 90%. The quality of the extracted residual oil is equal to the seed oil. This method was effective and safety. Shortening the road of oil and increasing the press, the extraction rate would be increased yet.