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Effect of Saccharomyces cerevisiae cells immobilisation on mead production
Pereira, A. P.; Ferreira, A. Mendes; Oliveira, J. M.; Estevinho, L .M.; Faia, A. MendesMead is a traditional alcoholic beverage obtained by the fermentation of diluted honey performed by yeasts. In this work the potential of application of immobilised yeast cells on single-layer Ca-alginate or double-layer alginateechitosan for mead production was assessed for the first time. The meads produced either with entrapped or free cells were evaluated in terms of quality and aroma profile. The immobilis...
High-cell-density fermentation of Saccharomyces cerevisiae for the optimisation...
Pereira, A. P.; Ferreira, A. Mendes; Oliveira, J. M.; Estevinho, L. M.; Faia, A. MendesMead is a traditional drink that contains 8 % and 18 % (v/v) of ethanol, resulting from the alcoholic fermentation of diluted honey by yeasts. Mead fermentation is a time-consuming process and the quality of the final product is highly variable. Therefore, the present investigation had two main objectives: first, to determine the adequate inoculum size of two commercial wine-making strains of Saccharomyces cere...
Impact of inoculum size on mead aroma compounds formation by wine strains of S....
Pereira, A. P.; Ferreira, A. Mendes; Oliveira, J. M.; Estevinho, L. M.; Faia, A. MendesMead is a traditional drink, containing 8-18% (v/v) of ethanol, which results from the alcoholic fermentation of diluted honey performed by yeasts. It has been reported that mead fermentation is a time-consuming process, and an important objective of mead makers is to reduce the fermentation time without decreasing the quality of the end product. A significant time can be saved in the fermentation process by in...
Modelo de apoio à decisão para a gestão de bacias hidrográficas usando Mike Basin
Pereira, A. P.; Haie, Naim; Fernandes, Luís FilipeO aumento da procura dos recursos hídricos, a limitação da oferta destes recursos, tem sido uma preocupação constante para a sociedade actual. O aumento da complexidade na gestão dos recursos e a dificuldade de resposta às necessidades da procura fazem com que seja urgente a utilização de novas metodologias e tecnologias, de modo a poder criar modelos de previsão de cenários futuros. Com base neste contexto é f...
Infestação entomológica e estimativa do risco de lepidópteros numa moagem de tr...
Mexia, António; Pereira, A.P.; Carvalho, M.O.An insect species list associated to a flour mill in Cape Verde was presented. The possible factors responsible for the differences observed in the different locations within the flour mill were discussed. Results obtained in 1999 were compared with data recorded in 1984 in identical conditions inside this flour mill. During two years the risk estimate from Lepidoptera infestations was carried out in this flour...
Adopção de protecção integrada em tabaco armazenado em Portugal
Mexia, António; Carvalho, M.O.; Pereira, A.P.Lasioderma serricorne (F.) and Ephestia elutella (Hb.) are the most serious pests of stored tobacco. Mainly are the larvae that feed on the product, may contaminate it with their excreta and cause damage on tobacco and allergic responses. The present work evaluated cigarette beetles and tobacco moths’ populations from the tobacco fields to the processing factories in Portugal using pheromone traps. Density, dis...
Armazenamento de produtos agrícolas secos na região de Luanda, Angola
Mexia, António; Matos, R.P.; Pereira, A.P.In the present work a summary on the phytossanitary features of stored products, mainly rice, maize, maize flour and cassava flour, in some stores and processing factory situated near Luanda, Angola is presented. A questionnaire was carried out in July/ August 2002 in order to get information on the store capacity, stored foodstuffs and storage period. An entomological survey in the observed storage facilities ...
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