Percorrer por autor "Vieira, Tiago Monteiro"
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- Biocides in food packaging: safety concerns and migration insightsPublication . Vieira, Tiago Monteiro; Singh, Srishti; Pereira, Joel; Poças, FátimaIntroduction: Context: Biocides such as BIT (1,2-Benzisothiazolin-3-one), CMIT (Chloromethylisothiazolinone), and MIT (Methylisothiazolinone) are commonly used in food packaging to preserve materials and ensure safety due to their antimicrobial properties. Problem: The potential migration of these biocides into food contact materials (FCMs) raises concerns, especially since their behavior under various conditions is not well understood. Objective: This study aims to characterize the extraction behavior of BIT, CMIT, and MIT from Kraft paper, focusing on its potential migration when used in food packaging. Results & Conclusions: The extraction of biocides from food packaging materials is influenced by the solvent type, temperature, and biocide properties (e.g., log Kow). BIT and CMIT showed higher solubility and extraction in ethanol, while MIT has a stronger affinity for water, reducing its extraction in ethanol. The complex interactions between temperature, solvent type, and the Kraft paper matrix affect biocide availability and migration patterns. Findings highlight the need for rigorous standards in food safety regarding biocide use in food packaging, emphasizing the need for further research of biocide behavior migration in various matrices.
- Packaging atmosphere and confinement as key factors in shelf-life extension of live clamsPublication . Goes, Cintia; Vieira, Tiago Monteiro; Pereira, Joel; Mota, Ana; Cruz, Andreia; Sivertsvik, Morten; Poças, Maria de FátimaLive bivalve molluscs are highly valued for their nutritional, gastronomic, and commercial qualities. However, they are extremely perishable, which increases production losses and waste in the supply chain. This study aimed to evaluate the shelf-life and physiological quality of live Venerupis corrugata clams stored at 3 ± 1°C in different packaging systems evaluating the effect of high-oxygen modified atmosphere packaging versus ambient air, and of physical confinement in net bags versus loose storage. Survival percentage, gases concentration, volatile organic compounds, pH, glycogen content, and biogenic amines were monitored throughout storage. Results showed that survival and physiological quality were strong influenced by the combined effects of oxygen availability and confinement. High-oxygen MAP delayed mortality by sustaining aerobic metabolism for longer, thereby reducing the respiration quotient. Physical confinement was critical in maintaining intravalvular liquid and preserving clam viability. Nevertheless, the modelled survivability extension was limited to only 1 day under optimal MAP conditions and confinement, highlighting the intrinsic sensitivity of this species.