Bibliographic Detail
Pereira, L. & Mesquita, J.F., 2003
Reference:
Pereira, L. & Mesquita, J.F. (2003). Carrageenophytes of occidental Portuguese coast: 1-spectroscopic
analysis in eight carrageenophytes from Buarcos Bay. Biomolecular Engineering 20: 217-222.
Abstract:
Infrared and Raman spectroscopic analysis of the carrageenan (alkaline extraction) in eight species (representing seven genera and
four families) of Gigartinales, in different reproductive phases from Buarcos bay (Figueira da Foz, Portugal), were studied. Female
gametophytes and non-fertile thalli samples of Chondrus crispus , Mastocarpus stellatus , Chondracanthus teedei var. lusitanicus ,
Gigartina pistillata and Chondracanthus acicularis present a k-carrageenan profile or varying degrees of a k /i hybrid. The presence
of k /i hybrid carrageenan in C. teedei var. lusitanicus was confirmed by 13C NMR. The carrageenans extracted from Gymnogongrus
crenulatus and Ahnfeltiopsis devoniensis are constituted mainly by i-carrageenan but seasonal variations in the nature of
carrageenans are present. l-Family carrageenans were found in tetrasporophytes of C. crispus , M. stellatus , C. teedei var.
lusitanicus , C. acicularis and G. pistillata . Calliblepharis jubata presents carrageenans of i-type in all reproductive stages.
