NDLI: Photochemical oxidation and autoxidation of chlorophyll phytyl side chain in senescent phytoplanktonic cells: Potential sources of several acyclic isoprenoid compounds in the marine environment

Content Provider	Springer Nature Link
Author	Rontani, Jean François Rabourdin, Adélaïde Marchand, Daphné Aubert, Claude
Copyright Year	2003
Abstract	Visible light-induced degradation of the chlorophyll phytyl side chain was studied in senescent cells of two phytoplanktonic strains (Skeletonema costatum and Thalassiosira weissflogii). Particular attention was paid to the induction of autoxidation processes on the phytyl chain and its photoproducts by photochemically produced hydroperoxides. The combination of photochemical oxidation and autoxidation reactions resulted in the production of several acyclic isoprenoid compounds that have been unambiguously identified by comparison of their retention times and mass spectra with those of appropriate standards. Various mechanisms are proposed to explain the formation of these oxidation products. These processes appear to be potential sources of numerous oxidized acyclic isoprenoids that previously have been detected in lacustrine and marine environments. Some oxidation products newly described or whose presence in natural samples was never reported in the literature were then sought in particulate matter, sediment, and microbial mat samples. The results obtained supported the significance of photochemical oxidation and autoxidation of phytoplanktonic chlorophyll phytyl side chain in the marine environment.
Starting Page	241
Ending Page	254
Page Count	14
File Format	PDF
ISSN	00244201
Journal	Lipids
Volume Number	38
Issue Number	3
e-ISSN	15589307
Language	English
Publisher	Springer-Verlag
Publisher Date	2003-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nutrition Bioorganic Chemistry Medicinal Chemistry Medical Biochemistry Biochemistry Microbial Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Cell Biology Organic Chemistry Biochemistry

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