CBQF - Outros / Others
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- Investigação aplicada sobre o pão de milho PortuguêsPublication . Rocha, João M.; Malcata, F. Xavier
- Alimentos seguros: responsabilidade de todosPublication . Teixeira, Paula
- Manufacture of bioactive peptide-rich concentrates from whey: characterization of pilot processPublication . Tavares, Tânia G.; Amorim, Manuela; Gomes, David; Pintado, Manuela E.; Pereira, Carlos D.; Malcata, F. XavierThis work was focused on the manufacture, at pilot scale, of cow whey protein and peptide concentrates, using selective filtration techniques—associated with hydrolysis brought about by proteolytic enzymes from Cynara cardunculus aqueous extracts, using as (optimal) conditions an enzyme/substrate ratio of 1.6% v/v, a pH of 5.2, a temperature of 55 C and an incubation time of 7 h. The profiles of proteins and peptides were assessed by liquid chromatography and electrophoresis; ca. 87% of a-lactalbumin was hydrolyzed, but essentially no degradation of b-lactoglobulin (b-Lg) was observed. A bioactive peptide concentrate, its fraction below 3 kDa and a b-Lg-rich fraction were obtained as final products, containing ca. 73, 43 and 91% w/w protein (on a total solid mass basis). All these fractions were low in lactose and salt, and their microbial loads were reduced. Said fractions are high added-value products, so they can be used as nutritional and functional ingredients—thus yielding an economically viable alternative for upgrade of whey.
- From soil to seed: micronutrient movement into and within the plantPublication . Sperotto, Raul A.; Ricachenevsky, Felipe K.; Williams, Lorraine E.; Vasconcelos, Marta; Menguer, Paloma K.
- Food structure design: innovation in food structure–properties relationshipsPublication . Silva, Cristina L. M.; Vicente, António A.; Piazza, Laura
- Draft genome sequences of two Ralstonia pickettii strains with different aminoglycoside resistance phenotypesPublication . Vaz-Moreira, Ivone; Tamames, J.; Martinez, J.L.; Manaia, C. M.The genomes of two Ralstonia pickettii strains (H2Cu2 and H2Cu5), isolated from hospital effluent in a selective medium containing CuSO4, were sequenced. They presented MICs of>256 and 6g/ml for the aminoglycoside gentamicin, respectively. The 5.2-Mb draft genomes have 40 contigs for strain H2Cu2 and 113 for H2Cu5.
- Prebiotics as drying aids for spray drying fruit juicesPublication . Freixo, R.; Brandão, Teresa R. S.; Silva, J.; Gomes Ana M. P.; Silva, Cristina L. M.; Morais, Alcina M. M. B.; Teixeira, Paula; Pintado, M. E.Natural fruit juices are difficult to transform into powder because they are rich in sugars and acids with low glass transition temperatures, resulting in a sticky behaviour during spray drying. The present research work aimed to test the prebiotics maltodextrin and arabic gum as drying agents in order to be able to produce dehydrated powder from pineapple, strawberry and apple juices. 2 % of maltodextrin and an inlet air temperature of 130 °C are recommended to spray dry apple juice, reaching 60 % yield of powder with a water activity below 0.40. For strawberry juice, 2 % of this carrier is recommended and the inlet air temperature, 120 °C or 130 °C, did not seem relevant. For pineapple, neither the concentration of the carrier nor the inlet air temperature seemed to be relevant.
- Corrigendum: “What’s in a name? The effect of congruent and incongruent product names on liking and emotions when consuming beer or non-alcoholic beer in a bar” [Food Qual. Preference 55 (2017) 58–66]Publication . Silva, Ana Patricia; Jager, Gerry; Voss, Hans-Peter; Zyl, Hannelize van; Hogg, Tim; Pintado, Manuela; Graaf, Cees de
- Improvement of the Sandell-Kolthoff reaction method (ammonium persulfate digestion) for the determination of iodine in urine samplesPublication . Machado, Ana; Lima, Lurdes; Mesquita, Raquel B. R.; Bordalo, Adriano A.