[Study on Talcum Powder Ironing Process of Corium Elephatis and Analysis Content of Amino Acid Before and After Processing].

Objective: To screen the talcum powder ironing process parameters of Corium Elephatis, and to analyze the contents of protein and amino acids in Corium Elephatis before and after processing.

Methods: Take the crushing rate and alcohol-soluble extractive as evaluation indexes, investigating the boiling temperature, boiling time and stirring speed with the L9（ 34） orthogonal test method. Determine the contents of protein and amino acid in Corium Elephatis by Kjeldahl method and amino acid analyzer.

Results: The optimal processing technology parameters were as follows: In 100 kg Corium Elephatis it should be added 30 kg talcum powder, the processing temperature was 350 380 ℃,with stirring speed of 15 r / min processing for 3 min. Both Corium Elephatis before and after processing had 16 kinds of amino acids. In crude Corium Elephatis, the content of protein was 92. 4%,and the total content of amino acids was 62. 79%; while in processed Corium Elephatis, the content of protein was 98. 2%,and the total content of amino acids was67. 03%,those had no significant difference commpared with the crude one when ignoring the water content.

Conclusion: The selected talcum powder ironing process of corium elephatis is stable with good reproducible.