Pigments present in the brown-greenish C morph of an intracellular endosymbiont of Pomacea canaliculata were investigated. Acetone extracts of the endosymbiotic corpuscles showed an absorption spectrum similar to that of chlorophylls. Three fractions obtained from silica gel column chromatography of the acetone extracts (CI, CII and CIII), were studied by positive ion fast atom bombardment mass spectrometry (FAB?MS) and hydrogen-nuclear magnetic resonance (H-NMR). Results indicated the presence of (1) a sterol in the yellow colored CI fraction; (2) a mixture of pheophorbides a and b in the major green fraction, CII,; and (3) a modified pheophorbide a in the smaller green fraction, CIII. Aqueous extracts of the C endosymbiont did not show e...
Application of a high resolution high performance liquid chromatography-mass spectrometry method to ...
The constituents of the melanin complex from mycelial forms of Fonsecaea pedrosoi were partially cha...
Melanins are dark, insoluble pigments that are resistant to concentrated acids and bleaching by oxid...
Two types of pigmented intracellular bodies have been reported in the digestive glands of several ca...
Abstract : Phycobiliproteins are a group of coloured proteins present in cyanobacteria and algae. T...
PTDC/MAR-BIO/0113/2014. UID/Multi/04378/2019. UID/QUI/50006/2019. SFRH/BD/120030/2016. SFRH/BD/10946...
peer reviewedUltraviolet (UV)-screening compounds represent a substantial asset for the survival of ...
Two phycoerythrocyanin (PEC) fractions have been obtained from the phycobilisomes of the cyanobac-te...
The digestive gland of the apple snail Pomacea canaliculata lodges two types of pigmented corpuscles...
Cyanobacterial pigments such as chlorophyll, carotenoids and phycobiliproteins are considered as eco...
The search for carotenoids in nature has been extensively studied because of their applications in f...
Eukaryotic photosynthesis originated in the course of evolution as a result of the uptake of some un...
Snails from the genus Pomacea lay conspicuous masses of brightly colored eggs above the water. Color...
Observations of cells of axenic peach palm (Bactris gasipaes) microplants by light microscopy reveal...
Cyanobacterial species such as Oscillatoria spp. pigments are essential components that enable the p...
Application of a high resolution high performance liquid chromatography-mass spectrometry method to ...
The constituents of the melanin complex from mycelial forms of Fonsecaea pedrosoi were partially cha...
Melanins are dark, insoluble pigments that are resistant to concentrated acids and bleaching by oxid...
Two types of pigmented intracellular bodies have been reported in the digestive glands of several ca...
Abstract : Phycobiliproteins are a group of coloured proteins present in cyanobacteria and algae. T...
PTDC/MAR-BIO/0113/2014. UID/Multi/04378/2019. UID/QUI/50006/2019. SFRH/BD/120030/2016. SFRH/BD/10946...
peer reviewedUltraviolet (UV)-screening compounds represent a substantial asset for the survival of ...
Two phycoerythrocyanin (PEC) fractions have been obtained from the phycobilisomes of the cyanobac-te...
The digestive gland of the apple snail Pomacea canaliculata lodges two types of pigmented corpuscles...
Cyanobacterial pigments such as chlorophyll, carotenoids and phycobiliproteins are considered as eco...
The search for carotenoids in nature has been extensively studied because of their applications in f...
Eukaryotic photosynthesis originated in the course of evolution as a result of the uptake of some un...
Snails from the genus Pomacea lay conspicuous masses of brightly colored eggs above the water. Color...
Observations of cells of axenic peach palm (Bactris gasipaes) microplants by light microscopy reveal...
Cyanobacterial species such as Oscillatoria spp. pigments are essential components that enable the p...
Application of a high resolution high performance liquid chromatography-mass spectrometry method to ...
The constituents of the melanin complex from mycelial forms of Fonsecaea pedrosoi were partially cha...
Melanins are dark, insoluble pigments that are resistant to concentrated acids and bleaching by oxid...