This work reports the application of oxygen-(O(2)-) reducing atmosphere methods on stored shelled Brazil nut (Bertholletia excelsa H.B.K.) packs aiming to evaluate the degree of aflatoxin degradation, nuts lipid oxidative stability, fungi control, and hygienic conditions improvement. The methods applied were (a) ozone: O(3), (b) carbon dioxide: CO(2), and (c) O(2) absorber pads with and without vacuum. From all modified atmospheres evaluated, the best performance was obtained with O(3), either with or without vacuum. It was the only nut treatment that was able to degrade aflatoxins. None of the spiked (AFLs: 15 μg·kg(-1)) nut samples O(3)- treated had aflatoxins detected up to the LC-MS/MS method LOQ (0.36 μg·kg(-1) for total AFLs), thus producing safer nuts. Also it kept the fatty acid oxidation indicator-malondialdehyde stable and improved the sensory attributes for consumer acceptance. In addition, the destruction of fungi and yeast was observed since the O(3) application (from 1.8 × 10(4) cfu/g to NG = no growth). All other treatments stabilized and/or inhibited microorganisms' growth only. By adding CO(2) gas also played an important role in the nut quality. Regarding cost, gaseous O(3) showed to be of low cost for application in the nut packs.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3132530 | PMC |
| http://dx.doi.org/10.1155/2011/813591 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A morpho-histological analysis of the exoskeleton of (Cnidaria, Hydrozoa) reveals insights into the taxonomy of Clathrozoellidae and Hydroidolina.
PeerJ
January 2025
Department of Zoology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil.
The taxonomic complexity of the families Clathrozoidae and Clathrozoellidae, rooted in early 20th-century hydroid descriptions, highlights the need for comprehensive and detailed morphological analyses. This study aimed to elucidate the histology of the polypoid stage of Peña Cantero, Vervoort & Watson, 2003, with a particular emphasis on its exoskeletal structure. Specimens from the National Museum of Natural History were examined histologically using different staining techniques.
View Article and Find Full Text PDFMicroscale intertidal habitats modulate shell break resistance of the prey; Implications for prey selection.
Mar Environ Res
January 2025
Universidad Austral de Chile, Instituto de Ciencias Marinas y Limnológicas, Valdivia, Chile; Programa de Pós-Graduação em Sistemas Aquáticos Tropicais, Universidade Estadual de Santa Cruz (UESC), Salobrinho, 45662-900, Ihéus, Brazil. Electronic address:
Intertidal microhabitats provide special conditions to the organisms that inhabit them and to some of their morpho-protective characteristics. Tidal pools, under the influence of acidified freshwater, may affect the characteristics of the protective shells of prey and have repercussions on predation. The shells of Perumytilus purpuratus from such tidepools are more fragile than those of their counterparts from the vertical intertidal walls of the same area.
View Article and Find Full Text PDFRecent Progress in Polyolefin Plastic: Polyethylene and Polypropylene Transformation and Depolymerization Techniques.
Molecules
December 2024
Programa de Pós-Graduação em Ciências Aplicadas a Produtos para a Saúde, Laboratório de Inovação em Química e Tecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal Fluminense, Rua Doutor Mario Vianna, 523, Santa Rosa, Niterói 24241-000, RJ, Brazil.
This paper highlights the complexity and urgency of addressing plastic pollution, drawing attention to the environmental challenges posed by improperly discarded plastics. Petroleum-based plastic polymers, with their remarkable range of physical properties, have revolutionized industries worldwide. Their versatility-from flexible to rigid and hydrophilic to hydrophobic-has fueled an ever-growing demand.
View Article and Find Full Text PDFExploring the Synergy of Metallic Antimicrobial Agents in Ternary Blends of PHB/PLA/PCL.
J Biomed Mater Res A
January 2025
PRISM Research Institute, Technological University of the Shannon: Midlands Midwest, Athlone, Ireland.
This study provides a comprehensive investigation of antimicrobial additives (ZnO/AgNPs and SiO/AgNPs) on the properties of biodegradable ternary blends composed of poly(hydroxybutyrate) (PHB), poly(lactic acid) (PLA), and polycaprolactone (PCL) by examining the morphology, thermal stability, crystallinity index, and cell viability of these blends. Overall, transmission electron microscopy (TEM) analysis revealed that AgNPs and SiO exhibited comparable sizes, whereas ZnO was significantly larger, which influences their release profiles and interactions with the blends. The addition of antimicrobials influences the rheology of the blends, acting as compatibilizers by reducing the intermolecular forces between biopolymers.
View Article and Find Full Text PDFPost-Degradation Recovery of CsPbI Quantum Dot Solar Cells.
Small
January 2025
Chair for Emerging Electronic Technologies, TUD Dresden University of Technology, Nöthnitzer Straße 61, 01187, Dresden, Germany.
The stability of perovskite quantum dot solar cells is one of the key challenges of this technology. This study reveals the unique degradation behavior of cesium lead triiodide (CsPbI) quantum dot solar cells. For the first time, it is shown that the oxygen-induced degradation and performance loss of CsPbI quantum dot photovoltaic devices can be reversed by exposing the degraded samples to humidity, allowing the performance to recover and even surpass the initial performance.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!