Margarida C. Vieira

ORCID: 0000-0003-2774-706X
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About
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Research Areas
  • Microbial Inactivation Methods
  • Phytochemicals and Antioxidant Activities
  • Postharvest Quality and Shelf Life Management
  • Nanocomposite Films for Food Packaging
  • Essential Oils and Antimicrobial Activity
  • Meat and Animal Product Quality
  • Listeria monocytogenes in Food Safety
  • Food Drying and Modeling
  • Agricultural and Food Sciences
  • Microencapsulation and Drying Processes
  • Sensory Analysis and Statistical Methods
  • Consumer Attitudes and Food Labeling
  • Freezing and Crystallization Processes
  • Spectroscopy and Chemometric Analyses
  • Food Waste Reduction and Sustainability
  • Phytochemistry Medicinal Plant Applications
  • biodegradable polymer synthesis and properties
  • Antioxidant Activity and Oxidative Stress
  • Insect Resistance and Genetics
  • Bioeconomy and Sustainability Development
  • Efficiency Analysis Using DEA
  • Management and Marketing Education
  • Wastewater Treatment and Nitrogen Removal
  • Polysaccharides Composition and Applications
  • Microplastics and Plastic Pollution

INESC TEC
2024

Universidade do Porto
2023-2024

University of Minho
2024

University of Algarve
2013-2023

Sustainability Institute
2023

Technological University Dublin
2023

Universidade Federal da Grande Dourados
2013-2015

Ministério da Agricultura
2012

National Institute of Biological Resources
2012

Direcção Regional de Cultura do Alentejo
2008

Agricultural waste has been a prominent environmental concern due to its significant negative impact on the environment when it is incinerated, disposed of in landfills, or burned. These scenarios promoted innovations food packaging sector using renewable resources, namely agri-food and by-products such as bagasse, pulps, roots, shells, straws, wastewater for extraction isolation biopolymers that are later transformed into materials bioplastics, biofilms, paper, cardboards, among others. In...

10.3390/su15076153 article EN Sustainability 2023-04-03

The aim of this research was to investigate the antiproliferative and anticholinesterase activities 11 extracts from 5 Annonaceae species in vitro. Antiproliferative activity assessed using 10 human cancer cell lines. Thin-layer chromatography a microplate assay were used screen for acetylcholinesterase (AchE) inhibitors Ellman's reagent. chemical compositions active investigated high performance liquid chromatography. Eleven obtained five plant particularly effective against UA251, NCI-470...

10.1590/1414-431x20144127 article EN cc-by Brazilian Journal of Medical and Biological Research 2015-02-12

The study of the suitability two isolation processes to produce cellulose nanofibers (CNFs) from Salicornia ramosissima waste, with potential applicability as a reinforcing agent polymeric composites was carried out. To separate fibrils cell wall and obtain CNFs an alkaline treatment applied followed by bleaching and, insoluble residue next hydrolyzed either acid (AT) or enzyme (ET). SEM TEM images indicated fiber exposure caused both treatments. diameter, length, aspect ratio,...

10.1016/j.fbp.2022.11.012 article EN cc-by-nc-nd Food and Bioproducts Processing 2022-12-02

A variety of bioactive substances present in fruits and vegetables processed products have health-promoting properties. Consumption nutrient-rich plant-based is essential to address undernutrition micronutrient deficiencies. Preservation paramount manufacturing non-solid foods such as juices, purees, sauces. Thermal processing has been widely used preserve fruit vegetable-based by reducing enzymatic microbial activities, thereby ensuring safety prolonged shelf life. However, the nutritional...

10.20944/preprints202308.0675.v1 preprint EN 2023-08-08

Abstract The Mediterranean diet is known for its health benefits, mainly due to diverse ingredients, such as fruits, vegetables, grains, nuts, legumes, and olive oil. This review examines the reformulation characterization of these ingredients using several novel food processing analytical technologies. Reformulation technologies discussed include microwave pasteurization, vacuum drying (VMD), pulsed electric field (PEF), high-pressure homogenization (HPH), freeze drying, high hydrostatic...

10.1007/s12393-025-09401-0 article EN cc-by Food Engineering Reviews 2025-04-21

In this study, the lactic fermentation of immature tomatoes as a tool for food ingredient production was evaluated circular economy-oriented alternative valorising industrial that are unsuitable processing and which have wasted away in large quantities field. Two acid bacteria (LAB) were assessed starter cultures an tomato pulp to produce functional ingredients with probiotic potential. The first trial character Lactiplantibacillus plantarum (LAB97, isolated from microbiota) Weissella...

10.3390/foods12071532 article EN cc-by Foods 2023-04-04
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