Quality evaluation of Portuguese honey

• Tipo: Artigo em Revista Científica Internacional
• Data: 1998

Autores

Mendes, E (Autor) Outra; Proenca, EB (Autor) Outra; Ferreira, IMPLVO (Autor) FFUP; Ferreira, MA (Autor) Outra

Revista

Título: Carbohydrate Polymers

Vol. 37

Páginas: 219-223

ISSN: 0144-8617

Editora: Elsevier

Indexação

ISI Web of Knowledge - 97 Citações

Scopus - 75 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-001-6SW

DOI: 10.1016/s0144-8617(98)00063-0

Abstract (EN): The present work was conducted to evaluate the quality of 25 brands of honey commercially available on the Portuguese market, in a total of 50 samples. The brands included unifloral and multifloral honeys, which were studied and botanically typified. Carbohydrate composition was determined by HPLC-RI to evaluate the contents of monosaccharides fructose and glucose; the disaccharides saccharose, maltose and trehalose and of the trisaccharide melizitose. 5-Hydroxymethyl-2-furfuraldehyde (HMF) was quantified by HPLC-UV and other physicochemical quality parameters were also carried out according to the European (Directive 74/409/EC) and Portuguese Regulations (Decreto-lei No. 131/85, 1985) in order to determine moisture, ash content, diastase activity, free acidity, free acidity and water-insoluble solids. All samples were organoleptically and microscopically examined. Only 13 brands were found to meet all major national and international specifications, the remaining 12 did not agree with one or more of the analysed parameters (HMF, diastase activity, or carbohydrate composition); such observations may reflect an inadequate manufacturing or storing process and a certain ageing of these honeys.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5