21 documents found, page 1 of 3

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Effect of different disinfection procedures on the microbiological quality and ...

García-Torres, Silvia Melissa; Teixeira, José António; Encina-Zelada, Christian R.; Silva, Cristina L. M.; Gomes, Ana Maria

Grain processing requires sustainable and innovative alternatives. Germination, which enhances the nutritional value of grains, can also increase the microbial load, posing a challenge to food safety. In quinoa, a superfood with an exceptional nutritional profile, germination could maximize its benefits if proper methods are applied to ensure safety. The effects of different disinfection methods on mesophilic a...


Chemical profiles and bioactivities of polyphenolic extracts of Lavandula stoec...

Silva, Beatriz Nunes; Cadavez, Vasco; Caleja, Cristina; Pereira, Eliana; Calhelha, Ricardo C.; Molina, Adriana K.; Finimundy, Tiane C.; Kostić, Marina

This study assessed the chemical profiles and bioactivities of the infusions, decoctions and hydroethanolic extracts of tarragon, basil and French lavender. The extracts were chemically characterised (HPLC-DAD-ESI/MS) and their bioactivities were evaluated in vitro. All extracts revealed antimicrobial, antifungal and antioxidant properties. French lavender extracts showed higher total phenolic content, regardle...

Date: 2024   |   Origin: Biblioteca Digital do IPB

Diversity of microorganisms and their metabolites in food

Rocha, João Miguel; Kovacevik, Biljana; Veličkovska, Sanja Kostadinović; Tamame, Mercedes; Teixeira, José António


A Comprehensive Review of Fish Protein Hydrolysates Targeting Pet Food Formulat...

Ribeiro, Tânia Isabel Bragança; Maia, Margarida R.G.; Fonseca, António J.M.; Marques, Bianca; Caleja, Cristina; Rosa, Ana; Martins, Rui; Almeida, André

The fish industry generates significant amounts of fish by- and co-products (FBCPs) annually, projected to reach 160.8 million tonnes by 2030. This growth highlights the urgent need for sustainable FBCP management and an opportunity to improve the sector’s environmental sustainability. Fish protein hydrolysates (FBCPHs) and bioactive peptides (BPs) derived from these FBCPs are gaining recognition in the pet foo...

Date: 2024   |   Origin: Biblioteca Digital do IPB

Mild heat treatment and biopreservatives for artisanal raw milk cheeses: reduci...

Silva, Beatriz Nunes; Teixeira, José António; Cadavez, Vasco; Gonzales-Barron, Ursula

The microbial quality of raw milk artisanal cheeses is not always guaranteed due to the possible presence of pathogens in raw milk that can survive during manufacture and maturation. In this work, an overview of the existing information concerning lactic acid bacteria and plant extracts as antimicrobial agents is provided, as well as thermisation as a strategy to avoid pasteurisation and its negative impact on ...

Date: 2023   |   Origin: Biblioteca Digital do IPB

Modelling the kinetics of Staphylococcus aureus in goat's raw milk under differ...

Silva, Beatriz Nunes; Coelho-Fernandes, Sara; Teixeira, José António; Cadavez, Vasco; Gonzales-Barron, Ursula

In this study, the heat resistance of S. aureus in goats’ raw milk subjected to thermisation temperatures was characterised through tests at various temperatures and modelling the survival curves using the Weibull model, through a two-step and an omnibus approach, which can model a full dataset covering all experimental conditions in one step. The fitting capacity of the secondary models obtained from the two-s...

Date: 2023   |   Origin: Biblioteca Digital do IPB

Lactic acid bacteria from artisanal raw goat milk cheeses: technological proper...

Silva, Beatriz Nunes; Fernandes, Nathália; Carvalho, Laís; Faria, Ana Sofia; Teixeira, José António; Rodrigues, Carina; Gonzales-Barron, Ursula

In cheese-making, a starter culture composed of adequately chosen lactic acid bacteria (LAB) may be suitable to ensure the rapid acidification of milk, improve textural and sensory characteristics, and avoid pathogen proliferation. In this work, 232 LAB isolates collected from artisanal goat’s raw milk cheeses produced in Portugal were evaluated for their antimicrobial capacity (at 10 and 37°C), as well as thei...

Date: 2023   |   Origin: Biblioteca Digital do IPB

Meta-analysis of in vitro antimicrobial capacity of extracts and essential oils...

Silva, Beatriz Nunes; Bonilla-Luque, Olga María; Possas, Arícia; Ezzaky, Youssef; Elmoslih, Abdelkhaleq; Teixeira, José António; Achemchem, Fouad

Diffusion methods, including agar disk-diffusion and agar well-diffusion, as well as dilution methods such as broth and agar dilution, are frequently employed to evaluate the antimicrobial capacity of extracts and essential oils (EOs) derived from Origanum L., Syzygium aromaticum, and Citrus L. The results are reported as inhibition diameters (IDs) and minimum inhibitory concentrations (MICs), respectively. In ...

Date: 2023   |   Origin: Biblioteca Digital do IPB

Screening and characterization of the diversity of food microorganisms and thei...

Rocha, João Miguel; Kovacevik, Biljana; Veličkovska, Sanja Kostadinović; Tamame, Mercedes; Teixeira, José António

Food is rarely kept in a sterile environment and the composition of microbial associations found in various foodstuffs is widely varied. Microorganisms in food usually originate from the natural microbiota of raw materials and the surrounding environments. Whether a species prevails depends upon its ability to adapt to intrinsic factors associated with foods, such as nutrient content; pH; water activity; oxidat...


Phytochemical composition and bioactive potential of melissa officinalis L., Sa...

Silva, Beatriz Nunes; Cadavez, Vasco; Caleja, Cristina; Pereira, Eliana; Calhelha, Ricardo C.; Añibarro-Ortega, Mikel; Finimundy, Tiane C.

Plants are rich in bioactive phytochemicals that often display medicinal properties. These can play an important role in the production of health-promoting food additives and the replacement of artificial ones. In this sense, this study aimed to characterise the polyphenolic profile and bioactive properties of the decoctions, infusions and hydroethanolic extracts of three plants: lemon balm (Melissa officinalis...

Date: 2023   |   Origin: Biblioteca Digital do IPB

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