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Food Microbiology

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2020

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Articles 31 - 42 of 42

Full-Text Articles in Food Science

How Fishy Is Your Fish? Authentication, Provenance And Traceability In Fish And Seafood By Means Of Vibrational Spectroscopy, Aoife Power, Daniel Cozzolino Jan 2020

How Fishy Is Your Fish? Authentication, Provenance And Traceability In Fish And Seafood By Means Of Vibrational Spectroscopy, Aoife Power, Daniel Cozzolino

Articles

Food authenticity, traceability and provenance are emerging issues of major concern forconsumers, industries and regulatory bodies worldwide. In addition, both food safety and securityare an intrinsic component of food quality where the above issues are key in modern traceabilityand management systems. It has been reported that substitution of a high-quality species by lessexpensive ones might be a frequent practice in seafood products such as fish and shellfish. In thistype of products, the source (e.g., origin) and identification of the species are complex. Althoughdifferent countries have implemented strict regulations and labelling protocols, these issues still are ofconcern. This article briefly reviews …


Cold Atmospheric Plasma Stimulates Clathrin-Dependent Endocytosis To Repair Oxidised Membrane And Enhance Uptake Of Nanomaterial In Glioblastoma Multiforme Cells, Zhonglei He, Kangze Li, Laurence Scally, Eline Manaloto, Sebnem Gunes, Sing Wei Ng, Marcus Maher, Brijesh Tiwari, Hugh Byrne, Paula Bourke, Furong Tian, Patrick Cullen, James Curtin Jan 2020

Cold Atmospheric Plasma Stimulates Clathrin-Dependent Endocytosis To Repair Oxidised Membrane And Enhance Uptake Of Nanomaterial In Glioblastoma Multiforme Cells, Zhonglei He, Kangze Li, Laurence Scally, Eline Manaloto, Sebnem Gunes, Sing Wei Ng, Marcus Maher, Brijesh Tiwari, Hugh Byrne, Paula Bourke, Furong Tian, Patrick Cullen, James Curtin

Articles

Cold atmospheric plasma (CAP) is increasingly studied in a growing number of clinical trials for cancer treat-ment1,2 and research is ongoing to explore the combination of CAP with other therapies, including nanoparticles, radiotherapy and chemotherapy3–5.Gold nanoparticles (AuNPs) are known to be weakly-toxic to human cells and be readily manufactured and designed for targeting delivery of various therapeutic compounds into cells. Citrate-capped cationic AuNPs may adsorb serum proteins onto their surface and thereby stimulate receptor-mediated endocytosis6. Without special surface functionalisation, AuNPs enter cells and become trapped in vesicles6–8 or enter the nucleus, depending on their size/shape9,10. Meanwhile, AuNPs with functionalised surface …


Assessing The Biological Safety Of Atmospheric Cold Plasmatreated Wheat Using Cell And Insect Models, Agata Los, Dana Ziuzina, Daniela Boehn, Paula Bourke Jan 2020

Assessing The Biological Safety Of Atmospheric Cold Plasmatreated Wheat Using Cell And Insect Models, Agata Los, Dana Ziuzina, Daniela Boehn, Paula Bourke

Articles

Atmospheric cold plasma (ACP) is under investigation for an extensive range of biocontrol applications in food biosystems. However, the development of a novel intervention technology requires a thorough evaluation of the potential for negative effects and the implications for the human and animal food chains’ safety. The evaluations were performed using a contained, high-voltage, dielectric barrier discharge plasma system. The cytotoxicity of two types of food models—a liquid model (wheat model medium (WMM)) vs. a solid model (wheat grain extract (WGE)) was compared in vitro using the mammalian cell line CHO-K1. The residual toxicity of ACP treatment of grains for …


A Review Of Technologies For Malt Flour And Sourdough From Brewery Spent Grain, Zachary Christman Jan 2020

A Review Of Technologies For Malt Flour And Sourdough From Brewery Spent Grain, Zachary Christman

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The utilization of brewer's spent grain for the production of malt flour is the focus of this article. The reader is presented with superheated steam and extrusion as technologies to reduce mycotoxin contamination and improve shelf life. Another option is the fermentation of brewer's spent grain with a cereal grade lactic acid bacteria for the production of sourdough bread. Milling of the brewer's spent grain for the production of bread is also covered.


Formation Of Escherichia Coli O157: H7 Persister Cells In The Lettuce Phyllosphere And Application Of Differential Equation Models To Predict Their Prevalence On Lettuce Plants In The Field, Daniel S. Munther, Michelle Q. Carter, Claude V. Aldric, Renata Ivanek, Maria T. Brandl Jan 2020

Formation Of Escherichia Coli O157: H7 Persister Cells In The Lettuce Phyllosphere And Application Of Differential Equation Models To Predict Their Prevalence On Lettuce Plants In The Field, Daniel S. Munther, Michelle Q. Carter, Claude V. Aldric, Renata Ivanek, Maria T. Brandl

Mathematics and Statistics Faculty Publications

American Society for Microbiology. Escherichia coli O157:H7 (EcO157) infections have been recurrently associated with produce. The physiological state of EcO157 cells surviving the many stresses encountered on plants is poorly understood. EcO157 populations on plants in the field generally follow a biphasic decay in which small subpopulations survive over longer periods of time. We hypothesized that these subpopulations include persister cells, known as cells in a transient dormant state that arise through phenotypic variation in a clonal population. Using three experimental regimes (with growing, stationary at carrying capacity, and decaying populations), we measured the persister cell fractions in culturable EcO157 …


Marine Toxins Targeting Kv1 Channels: Pharmacological Tools And Therapeutic Scaffolds, Rocio K. Finol-Urdaneta, Aleksandra Belovanovic, Milica Micic-Vicovac, Gemma K. Kinsella, Jeffrey R. Mcarthur, Ahmed Al-Sabi Jan 2020

Marine Toxins Targeting Kv1 Channels: Pharmacological Tools And Therapeutic Scaffolds, Rocio K. Finol-Urdaneta, Aleksandra Belovanovic, Milica Micic-Vicovac, Gemma K. Kinsella, Jeffrey R. Mcarthur, Ahmed Al-Sabi

Articles

Toxins from marine animals provide molecular tools for the study of many ion channels, including mammalian voltage-gated potassium channels of the Kv1 family. Selectivity profiling and molecular investigation of these toxins have contributed to the development of novel drug leads with therapeutic potential for the treatment of ion channel-related diseases or channelopathies. Here, we review specific peptide and small-molecule marine toxins modulating Kv1 channels and thus cover recent findings of bioactives found in the venoms of marine Gastropod (cone snails), Cnidarian (sea anemones), and small compounds from cyanobacteria. Furthermore, we discuss pivotal advancements at exploiting the interaction of κM-conotoxin RIIIJ …


Computational Modelling Approach For The Optimization Of Apple Juice Clarification Using Immobilized Pectinase And Xylanase Enzymes, Shady Hassan, Gwilym Williams, Amit Jaiswal Jan 2020

Computational Modelling Approach For The Optimization Of Apple Juice Clarification Using Immobilized Pectinase And Xylanase Enzymes, Shady Hassan, Gwilym Williams, Amit Jaiswal

Articles

Apple juice is typically marketed as a clear juice, and hence enzymatic treatments are common practices in juice industry. However, enzymatic treatments have been shown to face some challenges when process efficiency, and cost effectiveness are concerned. Therefore, it is necessary to optimize the enzymatic treatment process to maximize efficiency, and reuse enzymes to minimize the overall cost via immobilization. In this context, the present work features the immobilization of pectinase and xylanase from M. hiemalis on genipin-activated alginate beads, with subsequent evaluation of its efficacy in apple juice clarification. A central composite rotatable design (CCRD), coupled with artificial neural …


Effect Of Atmospheric Cold Plasma On The Functional Properties Of Whole Wheat (Triticum Aestivum L.) Grain And Wheat Flour, Sonal Chaple, Chaitanya Sarangapani, John B. Jones, Ed Carey, Lucie Causeret, Annaik Genson, Brendan Duffy, Paula Bourke Jan 2020

Effect Of Atmospheric Cold Plasma On The Functional Properties Of Whole Wheat (Triticum Aestivum L.) Grain And Wheat Flour, Sonal Chaple, Chaitanya Sarangapani, John B. Jones, Ed Carey, Lucie Causeret, Annaik Genson, Brendan Duffy, Paula Bourke

Articles

Atmospheric cold plasma (ACP) has emerged as a novel processing technology, with demonstrated efficiencies in microbial inactivation. However, studies on the effects of ACP and potential to modify the functional properties of foods are sparse. The objective of this study is to determine the effect of ACP on physico-chemical and functional properties of wheat flour. In this study, both whole wheat grains and wheat flour were subjected to a dielectric barrier discharge (DBD) contained plasma reactor for a range of treatment times (5–30 min) at 80 kV. Plasma treatment increased the flour hydration properties of wheat flour. Rapid visco-analyser results …


Effects Of Cold Plasma On Wheat Grain Microbiome And Antimicrobial Efficacy Against Challenge Pathogens And Their Resistance, Agata Los, Dana Ziuzina, Daniela Boehm, Paula Bourke Jan 2020

Effects Of Cold Plasma On Wheat Grain Microbiome And Antimicrobial Efficacy Against Challenge Pathogens And Their Resistance, Agata Los, Dana Ziuzina, Daniela Boehm, Paula Bourke

Articles

The safety and quality of cereal grain supplies are adversely impacted by microbiological contamination, with novel interventions required to maximise whole grains safety and stability. The microbiological contaminants of wheat grains and the efficacy of Atmospheric Cold Plasma (ACP) for potential to control these risks were investigated. The evaluations were performed using a contained reactor dielectric barrier discharge (DBD) system; samples were treated for 0–20 min using direct and indirect plasma exposure. Amplicon-based metagenomic analysis using bacterial 16S rRNA gene and fungal 18S rRNA gene with internal transcribed spacer (ITS) region was performed to characterize the change in microbial community …


Food Security And Diet Quality In Native Hawaiian, Pacific Islander, And Filipino Infants 3 To 12 Months Of Age, Sally Campbell, John J. Chen, Carol J. Boushey, Heather Eicher-Miller, Fengqing Zhu, Marie K. Fialkowski Jan 2020

Food Security And Diet Quality In Native Hawaiian, Pacific Islander, And Filipino Infants 3 To 12 Months Of Age, Sally Campbell, John J. Chen, Carol J. Boushey, Heather Eicher-Miller, Fengqing Zhu, Marie K. Fialkowski

Articles

Food insecurity and other nutritional risks in infancy pose a lifelong risk to wellbeing; however, their effect on diet quality in Native Hawaiian, Pacific Islander, and Filipino (NHPIF) infants in Hawai‘i is unknown. In this cross-sectional analysis, the association between various indicators of food security and NHPIF infant diet quality were investigated in 70 NHPIF infants aged 3–12 months residing on O‘ahu, Hawai‘i. The dietary assessments of the infants were collected using a mobile food recordTM. Foods consumed across four days were categorized into seven food groups. Indicators for food security were examined through an adapted infant food …


Salcaprozate Sodium (Snac) Enhances Permeability Of Octreotide Across Isolated Rat And Human Intestinal Epithelial Mucosae In Ussing Chambers, Sarinj Fattah, Mohamed Ismaiel, Brenda Murphy, Aleksandra Rulikowska, Jesus Maria Frias, Desmond C. Winter, David J. Brayden Jan 2020

Salcaprozate Sodium (Snac) Enhances Permeability Of Octreotide Across Isolated Rat And Human Intestinal Epithelial Mucosae In Ussing Chambers, Sarinj Fattah, Mohamed Ismaiel, Brenda Murphy, Aleksandra Rulikowska, Jesus Maria Frias, Desmond C. Winter, David J. Brayden

Articles

Octreotide is approved as a one-month injectable for treatment of acromegaly and neuroendocrine tumours. Oral delivery of the octapeptide is a challenge due mainly to low intestinal epithelial permeability. The intestinal permeation enhancer (PE) salcaprozate sodium (SNAC) has Generally Regarded As Safe (GRAS) status and is a component of an approved oral peptide formulation. The purpose of the study was to examine the capacity of salcaprozate sodium (SNAC), to increase its permeability across isolated rat intestinal mucosae from five regions and across human colonic mucosae mounted in Ussing chambers. Apical-side buffers were Kreb's-Henseleit (KH), fasted simulated intestinal fluid (FaSSIF-V2), rat …


The Effect Of Lauric Arginate On The Thermal Inactivation Of Starved Listeria Monocytogenes In Sous-Vide Cooked Ground Beef, Vijay K. Juneja, Marangeli Osoria, Uma Tiwari, Xinran Xu, Chase E. Golden, Sudarsan Mukhopadhyay, Abhinav Mishra Jan 2020

The Effect Of Lauric Arginate On The Thermal Inactivation Of Starved Listeria Monocytogenes In Sous-Vide Cooked Ground Beef, Vijay K. Juneja, Marangeli Osoria, Uma Tiwari, Xinran Xu, Chase E. Golden, Sudarsan Mukhopadhyay, Abhinav Mishra

Articles

The aim of this study was to examine the efficacy of lauric arginate (LAE, 1000 ppm – 3000 ppm) as an assisting tool to reduce starved Listeria monocytogenes population in ground beef following sous-vide processing at different temperatures (55–62.5 °C). Ground beef mixed with LAE was vacuum sealed and a laboratory water bath was used for sous-vide cooking. Loglinear and Weibull models were fit to the survival microbial population and the D and Z-values were determined at 55–62.5 °C. Calculated D-values ranged from 33.62 to 3.22 min at temperature 55–62.5 °C. LAE at higher concentration is an effective antimicrobial to …