Amino Acids

[Blagoje]

Dear all,
Does anybody want to advice me about amino acids analysis? Is it better to do it on HPLC or GC?
Thanks in advance!

[skunked_once]

Step one, check the archives. There has been a lot of discussion about this analysis in the past. Step two, give more information in your question. The type of analysis depends on sample matrix, which amino acids, etc.

[Blagoje]

The sample is animal food, and amino acids of interest are lysine, methionine, cystine and cysteine.
Thanks for the advice, but I try to find something using easy way.

[SIELC_Tech]

Check this links for amino acids in various products:

http://www.sielc.com/compound_064.html
http://www.sielc.com/application_087.html
http://www.sielc.com/application_097.html

Contact me if you have questions

[Mark Tracy]

At South Dakota State University in Brookings SD, Prof. Nancy Thiex taught a workshop on exactly the subject of feed testing for amino acids (I was a guest speaker). There is an official AOAC method that was the basis of her course. The method is non-trivial. If you just have a few samples, her lab does service for hire. Write her at Nancy.Thiex@sdstate.edu and say hello from me.