Encontrados 7 documentos, a visualizar página 1 de 1
Composição do Leite de Mulher, do Leite de Vaca e das Fórmulas de Alimentação I...
Ferreira, Isabel M.P.L.V.O.O leite de mulher tem sido usado como guia na elaboração de fórmulas para alimentação infantil. Neste artigo é feito um resumo sobre a avaliação da composição do leite de mulher e a composição do leite de vaca no que respeita aos constituintes maioritários (proteína, gordura, hidratos de carbono e cinzas) e constituintes minoritários da fracção azotada não proteica (taurina e outros aminoácidos livres, nucleóti...
Bisphenol A migration from plastic materials: direct insight of ecotoxicity in ...
Mansilha, Catarina; Silva, Poliana; Rocha, Sónia; Gameiro, P.; Domingues, Valentina F.; Pinho, Carina; Ferreira, Isabel M. P. L. V. O.Bisphenol A (BPA) is an endocrine disrupting chemical (EDC) whose migration from food packaging is recognized worldwide. However, the real overall food contamination and related consequences are yet largely unknown. Among humans, children’s exposure to BPA has been emphasized because of the immaturity of their biological systems. The main aim of this study was to assess the reproductive impact of BPA leached fr...
Microbiological, biochemical and biogenic amine profiles of Terrincho cheese ma...
Pintado, Ana I. E.; Pinho, Olívia; Ferreira, Isabel M. P. L. V. O.; Pintado, M. Manuela E.; Gomes, Ana M. P.Terrincho is a Portuguese traditional cheese, bearing a protected denomination of origin (PDO) status, which is manufactured from raw ewes’ milk and ripened for a minimum period of 30 d. The objectives of this research effort were to characterize the microbiological and biochemical profiles of this cheese, manufactured in several dairy farms during the winter cheesemaking season (December through March), and es...
Polipeptídeos e proteínas com influência na qualidade da espuma da cerveja e mé...
Silva,Filipe; Ferreira,Isabel M. P. L. V. O.; Teixeira,NatérciaA review of polypeptides and proteins that influence, direct or indirectly, beer foam quality, as well as the most relevant analytical methods used in their study, are presented. Protein Z, LTP1 and hordein/glutelin fragments originated from malt have a direct influence on beer foam quality. Other proteins, like malt hordeins and albumins and wheat puroindolines, are, to some degree, also important for beer foa...
Detecção de adulterações em produtos alimentares contendo leite e/ou proteínas ...
Veloso,Ana Cristina A.; Teixeira,Natércia; Ferreira,Isabel M.P.L.V.O.; Ferreira,Margarida A.A critical review of the most relevant analytical methodologies for quality and authenticity control of dairy products and foods containing milk proteins is presented. Chromatographic, electrophoretic and immunological methods are used for: detection of cow's milk in ewe and goat milks, detection of whey added to milk, detection of caseins and/or whey proteins in non-lactic foods and study compounds resulting f...
Flow injection sequential determination of chloride by Potentiometry and Sodium...
Ferreira, Isabel M. P. L. V. O.; Lima, José L. F. C.; Rangel, António O. S. S.A flow injection system for the sequential determination of chloride and sodium in instant soups is described. The chloride is measured with a tubular chloride ion selective electrode with a membrane consisting of a homogeneous mixture of silver chloride and silver sulfide, and the sodium is measured by flame emission spectrometry. Results were in good agreement with the reference procedures and exhibited good ...
Flow injection titration of chloride in food products with a silver tubular ele...
Ferreira, Isabel M.P.L.V.O.; Lima, JoséL.F.C.; Rangel, António O.S.S.A flow injection system for the pseudo-titration of chlorides in food products with potentiometric detection has been developed. For this purpose, a silver ion selective tubular electrode based on a homogeneous crystalline membrane, prepared by pressing silver sulphide at high pressure, was constructed. Its operational characteristics were evaluated and compared with the corresponding conventionally shaped elec...
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