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Title: Identification of selected seaweed polysaccharides (phycocolloids) by vibrational spectroscopy (FTIR-ATR and FT-Raman)
Authors: Pereira, Leonel 
Amado, Ana 
Critchley, Alan 
van de Velde, Fred 
Ribeiro-Claro, Paulo 
Keywords: Polysaccharides; Vibrational Spectroscopy
Issue Date: 31-Jan-2011
Serial title, monograph or event: Food Hydrocolloids
Volume: 23
Abstract: The wide industrial application of phycocolloids (e.g. alginates, agar and carrageenans) is based on their particular properties to form gels in aqueous solution. These seaweed polysaccharides present a chemical structure related with the taxonomic position of the algae: carrageenans are produced by carrageenophytes (red algae belonging mainly to the genera Kappaphycus, Eucheuma, Chondrus, Gigartina and Chondracanthus). Recently, new spectroscopic techniques have provided more accurate identification of the natural composition of the polysaccharides produced by these seaweeds. With the combination of two spectroscopic techniques (FTIR-ATR and FT-Raman) it is possible to identify the principal seaweed colloids in ground seaweed samples as in extracted material. Since the seaweed samples receive the minimum of handling and treatment (e.g. they are simply dried and ground), the composition determined represents, as accurately as possible, the native composition of the phycocolloids.
DOI: 10.1016/j.foodhyd.2008.11.014
Rights: embargoedAccess
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais

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