Identification of chlorophyll transformation products in a lake sediment by combined liquid chromatography-mass spectrometry
1991; Elsevier BV; Volume: 557; Linguagem: Inglês
10.1016/s0021-9673(01)87138-7
ISSN1873-3778
AutoresChristian B. Eckardt, Brendan J. Keely, James R. Maxwell,
Tópico(s)Diatoms and Algae Research
ResumoNegative-ion liquid chromatographic-mass spectrometric analysis of the pigment composition of the bottom sediment (15–20 cm) of a eutrophic lake revealed the presence of a novel series of chlorophyll transformation products, in which a series of C27C30 sterols and stanols are esterified to a pyrophaeophorbide a nucleus of algal origin. The major components are algal-derived chlorophyll a and b degradation products, and the presence of a bacteriochlorophyll-related phaeophytin indicates the presence of anoxic conditions extending into the photic zone when the sediment was laid down.
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