Browsing Research publications by Author "Garcia-Cela, Esther"
Now showing items 1-16 of 16
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Application of Risk Management Metrics for ochratoxin-A control in the coffee chain
Rubio-Lopez, Fernando; Taniwaki, Marta; Morris, Jonathan; Garcia-Cela, Esther (2023-12-31)Coffee is one of the most consumed beverages worldwide. Like other agricultural products, coffee is susceptible of colonization by mycotoxin-producing fungi and therefore, the presence of mycotoxins. These chemical hazards ... -
Assessment of the Effect of Satureja montana and Origanum virens Essential Oils on Aspergillus flavus Growth and Aflatoxin Production at Different Water Activities
Garcia-Diaz, Marta; Gil-Serna, Jessica; Patino, Belen; Garcia-Cela, Esther; Magan, Naresh; Medina, Angel (2020-02-25)Aflatoxin contamination of foodstuffs poses a serious risk to food security, and it is essential to search for new control methods to prevent these toxins entering the food chain. Several essential oils are able to reduce ... -
Comparative Growth Inhibition of Bread Spoilage Fungi by Different Preservative Concentrations Using a Rapid Turbidimetric Assay System
Garcia, Marcelo Valle; Garcia-Cela, Esther; Magan, Naresh; Copetti, Marina Venturini; Medina, Angel (2021-06-08)Bread and intermediate moisture bakery products are mainly spoiled by yeasts and filamentous fungi. The inoculum load and preservation system used determines their shelf life. To extend the shelf life of such commodities, ... -
Determining future aflatoxin contamination risk scenarios for corn in Southern Georgia, USA using spatio-temporal modelling and future climate simulations
Kerry, Ruth; Ingram, Ben; Garcia-Cela, Esther; Magan, Naresh; Ortiz, Brenda V.; Scully, Brian (2021-06-29)Aflatoxins (AFs) are produced by fungi in crops and can cause liver cancer. Permitted levels are legislated and batches of grain are rejected based on average concentrations. Corn grown in Southern Georgia (GA), USA, which ... -
Dynamics of solute/matric stress interactions with climate change abiotic factors on growth, gene expression and ochratoxin aA production by Penicillium verrucosum on a wheat-based matrix
Abdelmohsen, Shaimaa; Verheecke-Vaessen, Carol; Garcia-Cela, Esther; Medina, Angel; Magan, Naresh (2020-10-16)Penicillium verrucosum is responsible for ochratoxin A (OTA) contamination of temperate cereals during harvesting and storage. Inoculum comes from soil and crop debris. This study examined the effect of temperature (25 vs ... -
Electrospinning Alginate/Polyethylene Oxide and Curcumin Composite Nanofibers
Gutierrez Gonzalez, Javier; Garcia-Cela, Esther; Magan, Naresh; Rahatekar, Sameer (2020-07-01)Manufacturing a sodium alginate (SA) and polyethylene oxide (PEO) composite loaded with curcumin (CU) was accomplished in this study by using electrospinning. These composite nanofibers were crosslinked using trifluoroacetic ... -
Fungal diversity and metabolomic profiles in GM and isogenic non-GM maize cultivars from Brazil
Marcon Gasperini, Alessandra; Garcia-Cela, Esther; Sulyok, Michael; Medina, A.; Magan, Naresh (2021-02-01)There is little knowledge of the microbial diversity, mycotoxins and associated secondary metabolites in GM maize and isogenic non-GM cultivars (cvs). This study has quantified the microbial populations and dominant fungal ... -
Growth Kinetic Parameters and Prediction of Growth and Zearalenone and Deoxynivalenol Production Boundaries by Three Fusarium asiaticum Strains Isolated from Wheat
Garcia-Cela, Esther; Verheecke-Vaessen, Carol; Ósk-Jónsdóttir, Inga; Lawson, Rita; Magan, Naresh (2022-10-25)Fusarium species can cause head blight of cereals worldwide. This is accompanied by impacts on yield and contamination of grains with mycotoxins. Regulations, with maximum limits, exist for the relevant Fusarium mycotoxins ... -
Interacting Abiotic Factors Affect Growth and Aflatoxin B1 Production Profiles of Aspergillus flavus Strains on Pistachio-Based Matrices and Pistachio Nuts
Baazeem, Alaa; Garcia-Cela, Esther; Medina, Angel; Magan, Naresh (2021-01-20)Pistachio nuts are an economically important commodity produced by many countries. They can be colonized by mycotoxigenic fungi, especially Aspergillus flavus, resulting in contamination with aflatoxins (AFs), especially ... -
Interacting Environmental Stress Factors Affect Metabolomics Profiles in Stored Naturally Contaminated Maize
Garcia-Cela, Esther; Sulyok, Michael; Verheecke-Vaessen, Carol; Medina, Angel; Krska, Rudolf; Magan, Naresh (2022-04-20)There is interest in understanding the relationship between naturally contaminated commodities and the potential for the production of different useful and toxic secondary metabolites (SMs). This study examined the impact ... -
Investigation of the potential to reduce waste through sampling and spatial analysis of grain bulks
Kerry, Ruth; Ingram, Benjamin R.; Garcia-Cela, Esther; Magan, Naresh (2021-07-01)Batches of grain are accepted or rejected based on average mycotoxin concentrations in a composite grain sample. Spatial analysis of mycotoxins in two grain bulks was performed to determine the spatial distribution of ... -
Solute and matric potential stress on Penicillium verrucosum : Impact on growth, gene expression and ochratoxin A p production
Abdelmohsen, Shaimaa; Verheecke-Vaessen, Carol; Garcia-Cela, Esther; Medina, Angel; Magan, Naresh (2020-03-27)Penicillium verrucosum survives in soil and on cereal debris. It colonises grain during harvesting, drying and storage. There is no information on the relative tolerance of P. verrucosum to solute and matric stress in terms ... -
Three-Dimensional Study of F. graminearum Colonisation of Stored Wheat: Post-Harvest Growth Patterns, Dry Matter Losses and Mycotoxin Contamination
Portell, Xavier; Verheecke-Vaessen, Carol; torrelles-Rafales, Rosa; Medina, Angel; Otten, Wilfred; Magan, Naresh; Garcia-Cela, Esther (2020-08-01)Fusarium causes significant post-harvest quality losses and mycotoxin contamination instored wheat but the colonisation dynamics of the grain and how this may be affected by the initialinoculum position in the grain mass ... -
Unveiling the effect of interacting forecasted abiotic factors on growth and aflatoxin B1 production kinetics by Aspergillus flavus
Garcia-Cela, Esther; Verheecke-Vaessen, Carol; Gutierrez-Pozo, Maria; Kiaitsi, Elisavet; Gasperini, Alessandra M.; Magan, Naresh; Medina, Angel (2020-05-30)The aim was to decipher the temporal impact of key interacting climate change (CC) abiotic factors of temperature (30 vs 37 °C), water activity (aw; 0.985 vs 0.930) and CO2 exposure (400 vs 1000 ppm) on (a) growth of ... -
Visualizing the invisible: class excursions to ignite children’s enthusiasm for microbes
McGenity, Terry J.; Gessesse, Amare; Hallsworth, John E; Garcia-Cela, Esther; Verheecke-Vaessen, Carol; Wang, Fengping; Chavarria, Max; Centro Nacional de Innovaciones Biotecnologicas, Max M; Molin, Søren; Danchin, Antoine; Smid, Eddy J; Lood, Cedric; Cockell, Charles S; Whitby, Corinne; Liu, Shuang-Jiang; Keller, Nancy P.; Stein, Lisa Y; Bordenstein, Seth R; Lal, Rup; Nunes, Olga C; Gram, Lone; Singh, Brajesh K; Webster, Nicole S; Morris, Cindy; Sivinski, Sharon; Bindschedler, Saskia; Junier, Pilar; Antunes, Andre; Baxter, Bonnie K; Scavone, Paola; Timmis, Kenneth (2020-05-14)We have recently argued that, because microbeshave pervasive – often vital – influences on ourlives, and that therefore their roles must be takeninto account in many of the decisions we face, soci-ety must become ... -
Water and temperature relations of Fusarium langsethiae strains and modelling of growth and T-2 and HT-2 mycotoxin production on oat-based matrices
Verheecke-Vaessen, Carol; Garcia-Cela, Esther; Lopez-Prieto, Alejandro; Osk Jonsdottir, Inga; Medina, Angel; Magan, Naresh (2021-06-16)In the UK and Northern Europe, ripening oats can become contaminated with T-2 and HT-2 mycotoxins, produced mainly by Fusarium langsethiae. There are indicative levels related to the maximum limits for oat grain for these ...