Current issue
Volume 13, Issue 2, 2024
Online ISSN: 2182-1054
Volume 13 , Issue 2, (2024)
Published: 18.10.2024.
Open Access
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Contents
01.12.2014.
Professional paper
Almond milk fermented with different potentially probiotic bacteria improves iron uptake by intestinal epithelial (Caco-2) cells
Neus Bernat, Maite Cháfer, Amparo Chiralt, Jose Moisés Laparra, Chelo González-Martínez
01.12.2014.
Professional paper
Mechanical properties of cassava starch films as affected by different plasticizers and different relative humidity conditions
Jeannine Bonilla Lagos, Nívea M. Vicentini, Rodolfo M.C. Dos Santos, Ana Mônica Q.B. Bittante, Paulo J. A. Sobral
01.12.2014.
Professional paper
Effect of incorporating alum in cane juice clarification efficiency and sucrose losses
Benard M. Kimatu, Symon Maina Mahungu, Abdul K. Faraj, Symon M. Mahungu, Benard Muinde Kimatu
01.12.2014.
Professional paper
Training requirements for agro-food industry in Portugal
Pedro D. Gaspar, Rita Pinheiro, Cláudia Domingues, Celestino Almeida, Teresa Paiva, Carlos D. Pereira, Manuela Vaz-Velho
01.12.2014.
Professional paper
Evaluating the Ultra-High Pressure Homogenization (UHPH) and Pasteurization effects on the quality and shelf life of donkey milk
Cephas Nii Akwei Addo, Victoria Ferragut
18.04.2015.
Original scientific paper
Training requirements for agro-food industry in Portugal
Agro-food companies are aware that the technical and soft skills of their employees directly influence business performance and, consequently, improving those skills will enhance the effectiveness and efficiency of their companies. This paper presents the main results of the AgriTraining project “Training requirements for the agro-food industry”. Activities in pursuit of the objectives of this project involved: (1) analysis of the training needs in the agro-food industry in Portugal; (2) analysis of the training provision and the training organizations; (3) analysis of market trends; (4) definition of a training strategy; and (5) adjustment and development of training strategies for the agro-food sector. This last activity comprised the development of training curricula, suitable for the food sector as a whole and adjusted for the specific needs of some traditional industries, in order to promote the development and competitiveness of the agro-food industry in Portugal. Such training curricula aimed to promote the uptake of innovative technologies and methodologies, increase the ability of agro-food industries to invest and take risks, and enable adoption of European Community standards for production and marketing. Gaps in training supply were identified and the training provision was updated according to the needs of the agro-food companies. It was determined that companies need and demand knowledge and innovation to increase their competitive position for internationalization purposes. It was possible to define a training strategy based on market-orientation for agro-food differentiation.
Pedro D. Gaspar, Rita Pinheiro, Claudia Domingues, Celestino Almeida, Teresa Paiva, Carlos D. Pereira, Manuela Vaz Velho
18.04.2015.
Original scientific paper
Applicability of Mixolab test with local wheat flours
Several types of equipment have been used to predict dough behaviour during breadmaking. The complexity of requirements means that no device is able to predict all the properties, and therefore, new tests are released continuously. The Chopin Mixolab mixes the dough at different temperatures, allowing the study of dough mixing properties, weakening, gelatinization, gel stability and retrogradation in one test. The objective of this work was to study the suitability of the Mixolab to predict rheological properties and breadmaking quality of local wheats. Flour was obtained from 29 wheat samples from different genotypes and environments. The correlation of results from traditional analyses (test weight, protein content, sedimentation volume, wet gluten, Falling Number, Alveograph and Farinograph) with Mixolab parameters was studied. The properties of two different bread types were compared with all these parameters. Stability and water absorption values from the Farinograph were highly correlated with the respective Mixolab parameters. It was concluded that wheat samples could be sorted by mixing properties in similar order independently of which method was used. Beyond that, gluten strength estimators obtained from these three rheological methods and the sedimentation volume test were highly correlated. Whilst the correlation of Mixolab parameters with pan loaf volume was not as high as traditional ones, Mixolab developing time, stability and C5 were the best correlated with the most important hearth bread characteristics. Studies performed by other researchers, using wheats from diverse origins, found different results. The need for empirical rheology evaluation with local wheat samples was proved.
Daniel Vazquez, Marıa C. Veira
18.04.2015.
Original scientific paper
Lipid composition of seed oils of different pomegranate (Punica granatum L.) cultivars from Spain
Pomegranate (Punica granatum L.) is an ancient fruit tree traditionally cultivated in the Near and Middle East. Presently, its most important growing regions include Afghanistan, Iran, Israel, USA, Italy and Spain, the latter country the largest European exporter. The pomegranate fruit can be divided into several anatomical compartments: outside peel, inside peel, and arils (pulp and seeds), the last part being usually used for consumption as is or for juice, jams and jellies production. Even though pomegranate seeds are an industrial by-product, recent reports have highlighted their potential use as a source of oil with beneficial chemical attributes. Therefore, the main objective of the present work was to characterize the seed oil of nine European pomegranate varieties, collected in Spain, for their fatty acid and vitamin E compositions. All seed lipid fractions consisted mainly of punicic acid (c9,t11,c13 C-18:3), ranging between 77.3% and 83.6% of total fatty acids, followed by small amounts of linoleic acid (C18:2n6), oleic acid (C18:1n9) and palmitic acid (C16:0). Regarding vitamin E composition, α-, γ-, δ-tocopherols were found in all pomegranate seed oils, but mainly γ-tocopherol, with total tocopherols ranging from 174.5 to 627.3 mg/100g oil. The richness of these pomegranate varieties seed oils in punicic acid, a conjugated linolenic acid with interesting anti-carcinogenic activity, and the elevated amount of tocopherols on the extracted lipids, of technological and nutritional relevance, make this by-product interesting for further exploitation.
Luana Fernandes, Jose A. Pereira, Isabel Lopez-Cortes, Domingo M. Salazar, Elsa Ramalhosa, Susana Casal
18.04.2015.
Original scientific paper
Evaluating the Ultra-High Pressure Homogenization (UHPH) and Pasteurization effects on the quality and shelf life of donkey milk
Donkey milk has functional properties of great interest to human nutrition. The effects of ultra-high pressure homogenization (UHPH) at 100 MPa, 200 MPa and 300 MPa in comparison with different pasteurization treatments of 70 ◦C for 1 min and 85 ◦C for 1 min on the physicochemical quality and shelf-life of treated and raw (untreated) donkey milk were studied. Gross composition and pH, total mesophilic counts, lysozyme activity and physical stability were studied during storage at 4 ◦C for 28 days. The compositional profile showed resemblance to that of human milk characterized by high lactose, low fat and low protein content and was least affected by the treatments. UHPH treatments at 200 MPa, 300 MPa and 85 ◦C were able to maintain steady pH during storage whereas the low intensity treatments showed a significant decrease. The observed lysozyme activity in the samples was generally high and appeared to have been enhanced by the applied UHPH and pasteurization treatments with no significant change during storage. Although the raw milk showed good initial microbial quality, extensive growth of mesophilic microorganisms occurred after 7 days of storage, unlike the treated samples which were able to maintain significantly low counts throughout the storage period. The physical stability of milk was negatively influenced by the higher UHPH treatments of 200 MPa and 300 MPa which exhibited sedimentation phenomenon, while creaming was insignificant.
Cephas Nii Akwei Addo, Victoria Ferragut
01.12.2014.
Professional paper
Lipid composition of seed oils of different pomegranate (Punica granatum L.) cultivars from Spain
Luana Fernandes, José A. Pereira, Isabel Lopéz-Cortés, Domingo M. Salazar, Elsa Ramalhosa, Susana Casal