My vote is for phaeophytin. Basically what happens is that acids
released from the vacuoles during homogenization of the cells cause the
Mg+2 in chlorophyll to be replaced with H+, so you will need to use a
strong buffer ca. pH 7. See Canfield et al. in Annals of Botany 75: 143-
(1995) for discussion and references.
Larry D. Nooden Telephone 313-764-4436
Biology Dept., University of Michigan FAX 313-747-0884
Ann Arbor, MI 48109-1048
URL: http://www.biology.lsa.umich.edu/~ldnum/
