Use of FT-IR spectroscopy as a tool for the analysis of polysaccharide food additives

• Tipo: Artigo em Revista Científica Internacional
• Data: 2003

Autores

Cerna, M (Autor) Outra; Barros, AS (Autor) Outra; Nunes, A (Autor) Outra; Rocha, SM (Autor) Outra; Delgadillo, I (Autor) Outra; Copikova, J (Autor) Outra; Coimbra, MA (Autor) Outra

Revista

Título: Carbohydrate Polymers

Vol. 51

Páginas: 383-389

ISSN: 0144-8617

Editora: Elsevier

Indexação

ISI Web of Knowledge - 202 Citações

Scopus - 216 Citações

Outras Informações

ID Authenticus: P-000-HG0

DOI: 10.1016/s0144-8617(02)00259-x

Abstract (EN): This work purposes the characterisation of food additive polysaccharides such as starch, glucomannan and carrageenan by the use of the information of the principal components of the FT-IR spectra in the 1200-800 cm(-1) wavenumber region. The application of a PCA to this spectral region showed that several features could be obtained: (a) Separation between Glc and Gal, both monomeric and polymeric, and identification of their characteristic wavenumbers. (b) Identification of the specific absorbance wavenumbers for sucrose, Fru, Ara, and Man. (c) Distinction of pectic polysaccharides from the remaining carbohydrate samples. (d) Separation within kappa-, iota-, and lambda-carrageenans. These results show that the FT-IR spectroscopy in the 1200-800 cm(-1) wavenumber region can be a very reliable technique for food authentication of polysaccharide-based additives and be used for a quick screening of polysaccharides used as additives in foodstuffs.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7