Cyclic peptides were characterized using ESI/Ion Trap, ESI/Q-TOF, and MALDI/TOF mass spectrometry. The cyclic peptides were extracted from Pseudostellaria heterophylla and Brachystemma calycinum using ethyl acetate. A digestion with carboxypeptidase was also performed to verify the cyclic nature of the peptides. It was found that MALDI/TOF in conjunction with CID generates the best sequence coverage.
|Number of pages||2|
|State||Published - 2002|
|Event||Proceedings - 50th ASMS Conference on Mass Spectrometry and Allied Topics - Orlando, FL, United States|
Duration: Jun 2 2002 → Jun 6 2002
|Conference||Proceedings - 50th ASMS Conference on Mass Spectrometry and Allied Topics|
|Period||06/2/02 → 06/6/02|