Degradation Kinetics Of Cold Plasma-Treated Antibiotics And Their Antimicrobial Activity,
2019
Technological University Dublin
Degradation Kinetics Of Cold Plasma-Treated Antibiotics And Their Antimicrobial Activity, Chaitanya Sarangapani, Dana Ziuzina, Patrice Behan, Daniela Boehm, Brendan F. Gilmore, Patrick J. Cullen, Paula Bourke
Articles
Antibiotics, such as ofloxacin (OFX) and ciprofloxacin (CFX), are often detected in considerable concentrations in both wastewater effluents and surface water. This poses a risk to non-target organisms and to human health. The aim of this work was to study atmospheric cold plasma (ACP) degradation of antibiotics in water and meat effluent and to explore any residual antimicrobial activity of samples submitted to the plasma process. The results revealed that ACP successfully degraded the studied antibiotics and that the reaction mechanism is principally related to attack by hydroxyl radicals and ozone. According to the disk diffusion assay, the activity of …
Dough Properties And Baking Characteristics Of White Bread, As Affected By Addition Of Raw, Germinated And Toasted Pea Flour,
2019
Technological University Dublin
Dough Properties And Baking Characteristics Of White Bread, As Affected By Addition Of Raw, Germinated And Toasted Pea Flour, Kim A. Millar, Catherine Barry-Ryan, Roisin Burke, Sinead Mccarthy, Eimear Gallagher
Articles
Thermal and non-thermal processing may alter the structure and improve the techno-functional properties of pulses and pulse flours, increasing their range of applications in protein-enhanced foods. The effects of germination and toasting of yellow peas (Pisum sativum) on flour and dough characteristics were investigated. Wheat flour was substituted with raw, germinated and toasted pea flour (30%). The resulting bread-baking properties were assessed. Toasting increased dough water absorption and improved dough stability compared with germinated and raw pea flour (p < 0.05). This resulted in bread loaves with comparable specific volume and loaf density to that of a wheat flour control. Significant correlations between dough rheological properties and loaf characteristics were observed. Addition of pea flours increased the protein content of the breads from 8.4% in the control white bread, to 10.1–10.8% (p < 0.001). Toasting demonstrated the potential to improve the techno-functional properties of pea flour. Results highlight the potential application of pea flour in bread-making to increase the protein content.
Evaluating Food Safety Knowledge And Practices Among Foodservice Staff In Al Madinah Hospitals, Saudi Arabia,
2019
Technological University Dublin
Evaluating Food Safety Knowledge And Practices Among Foodservice Staff In Al Madinah Hospitals, Saudi Arabia, Anushree Priyadarshini, Nada Ahmad Alqurashi, Amit Jaiswal
Articles
This study examines food safety knowledge and practices of food service staff in Al Madinah hospitals, Saudi Arabia. A total of 163 food service staff participated voluntarily from 10 hospitals across the city of Al Madinah. The participants completed a questionnaire composed of threeparts: Generalcharacteristics,foodsafetyknowledge,andfoodsafetypractices. Resultsshowed that respondents generally had good food safety knowledge with the highest pass rate of 77.9% for knowledge of cross contamination followed by 52.8% for knowledge of food poisoning, and 49.7% of knowledge of food storage. Food safety practices were also strongly observed in the hospitals with a pass rate of 92.6%. Food safety knowledge …
Plasma-Treated Air And Water—Assessment Of Synergistic Antimicrobial Effects For Sanitation Of Food Processing Surfaces And Environment,
2019
Technological University Dublin
Plasma-Treated Air And Water—Assessment Of Synergistic Antimicrobial Effects For Sanitation Of Food Processing Surfaces And Environment, Uta Schnabel, Oliver Handorf, Kateryna Yarova, Björn Zessin, Susann Zechlin, Diana Sydow, Elke Zellmer, Jörg Stachowiak, Mathias Andrasch, Harald Below, Jörg Ehlbeck
Articles
The synergistic antimicrobial effects of plasma-processed air (PPA) and plasma-treated water (PTW), which are indirectly generated by a microwave-induced non-atmospheric pressure plasma, were investigated with the aid of proliferation assays. For this purpose, microorganisms (Listeriamonocytogenes, Escherichiacoli, Pectobacteriumcarotovorum, sporulatedBacillusatrophaeus) were cultivated as monocultures on specimens with polymeric surface structures. Both the distinct and synergistic antimicrobial potential of PPA and PTW were governed by the plasma-on time (5–50 s) and the treatment time of the specimens with PPA/PTW (1–5 min). In single PTW treatment of the bacteria, an elevation of the reduction factor with increasing treatment time could be observed (e.g., reduction …
High Voltage Atmospheric Cold Air Plasma Control Of Bacterial Biofilms On Fresh Produce,
2019
Technological University Dublin
High Voltage Atmospheric Cold Air Plasma Control Of Bacterial Biofilms On Fresh Produce, Apurva Patange, D. Boehm, Dana Ziuzina, Patrick J. Cullen, Brendan Gilmore, Paula Bourke
Articles
Atmospheric cold plasma (ACP) offers great potential for decontamination of food borne pathogens. This study examined the antimicrobial efficacy of ACP against a range of pathogens of concern to fresh produce comparing planktonic cultures, monoculture biofilms (Escherichia coli, Salmonella enterica, Listeria monocytogenes, Pseudomonas fluorescens) and mixed culture biofilms (Listeria monocytogenes and Pseudomonas fluorescens). Biotic and abiotic surfaces commonly occurring in the fresh food industry were investigated. Microorganisms showed varying susceptibility to ACP treatment depending on target and process factors. Bacterial biofilm populations treated with high voltage (80 kV) ACP were reduced significantly (p < 0.05) in both mono- and mixed species biofilms after 60 s of treatment and yielded non-detectable levels after extending treatment time to 120 s. However, an extended time was required to reduce the challenge mixed culture biofilm of L. monocytogenes and P. fluorescens inoculated on lettuce, which was dependent on biofilm formation conditions and substrate. Contained treatment for 120 s reduced L. monocytogenes and P. fluorescens inoculated as mixed cultures on lettuce (p < 0.05) by 2.2 and 4.2 Log10 CFU/ml respectively. When biofilms were grown at 4 °C on lettuce, there was an increased resistance to ACP treatment by comparison with biofilm grown at temperature abuse conditions of 15 °C. Similarly, L. monocytogenes and P. fluorescens exposed to cold stress (4 °C) for 1 h demonstrated increased tolerance to ACP treatment compared to non-stressed cells. These finding demonstrates that bacterial form, mono versus mixed challenges as well as environmental stress conditions play an important role in ACP inactivation efficacy.
Spent Coffee Waste As A Potential Media Component For Xylanase Production And Potential Application In Juice Enrichment,
2019
Technological University Dublin
Spent Coffee Waste As A Potential Media Component For Xylanase Production And Potential Application In Juice Enrichment, Rajeev Ravindran, Gwilym Williams, Amit Jaiswal
Articles
In this study, spent coffee waste (SCW) was used as the sole carbon source for xylanase production in solid state fermentation mode using Aspergillus niger. A Box–Behnken design was constructed using three parameters viz. temperature, initial moisture content, and log number of sporestodeterminetheoptimalfermentationcondition. Thebestfermentationconditionsforxylanase productionwerefound to beincubation at30◦Cwith aninitial moisture contentof 70%and usingan inoculum of 6.5×106 spores/g of dry SCW. Furthermore, the design of experiments revealed that maintaining a medium composition of 0.2 g of yeast extract, 0.04 g of K2HPO4, and 0.03 g of MgSO4 increased xylanase production. Under optimised solid-state fermentation conditions an enzyme activity of 6495.6 IU/g …
Effect Of Cold Plasma Treatment On The Antigenicity Of Peanut Allergen Ara H 1,
2019
Technological University Dublin
Effect Of Cold Plasma Treatment On The Antigenicity Of Peanut Allergen Ara H 1, Harshitha Venkataratnam, Chaitanya Sarangapani, Orla Cahill, Catherine Barry-Ryan
Articles
The objective of this study was to investigate the effects of cold atmospheric plasma on the antigenicity of protein Ara h 1. Dry, defatted peanut flour (DPF), whole peanut (WP) were subjected to cold atmospheric plasma at voltage of 80 kV for different treatment durations (0, 15, 30, 45 and 60 min). The allergen samples were analyzed using SDS-PAGE, immunoblot and competitive ELISA. Furthermore, the secondary structure was examined using circular dichroism. SDS-PAGE results revealed no change in the protein intensity bands corresponding to Ara h 1 for both DPF and WP. Competitive ELISA of samples showed a reduction in …
Evaluation Of Brewer's Spent Grain Hydrolysate As A Substrate For Production Of Thermostable Α-Amylase By Bacillus Stearothermophilus,
2019
Technological University Dublin
Evaluation Of Brewer's Spent Grain Hydrolysate As A Substrate For Production Of Thermostable Α-Amylase By Bacillus Stearothermophilus, Rajeev Ravindran, Gwilym A. Williams, Amit Jaiswal
Articles
In the present study, BSG was hydrolysed using cellulolytic enzymes and used as a growth medium supplement for cultivation of the thermophilic bacterium, Bacillus stearothermophilus in the production of α-amylase. A central composite design involving five parameters and four levels viz. starch, peptone, KCl, and MgSO4 along with BSG hydrolysate was used to derive the optimal media composition. The fermentation was conducted using shake flasks for 36 h at a temperature of 50 °C and pH 7.0 at 220 rpm. Optimization trials revealed that maximal amylase production (198.09 U/ml) occurred with a medium composition of starch (0.2% w/v), peptone (0.2% …
Assessing The Utility Of Multiplexed Liquid Chromatography-Mass Spectrometry For Gluten Detection In Australian Breakfast Food Products,
2019
Edith Cowan University
Assessing The Utility Of Multiplexed Liquid Chromatography-Mass Spectrometry For Gluten Detection In Australian Breakfast Food Products, Haili Li, Utpal Bose, Sally Stockwell, Crispin A. Howitt, Michelle Colgrave
Research outputs 2014 to 2021
Coeliac disease (CD) is an autoimmune disorder triggered by the ingestion of gluten that is associated with gastrointestinal issues, including diarrhea, abdominal pain, and malabsorption. Gluten is a general name for a class of cereal storage proteins of wheat, barley, and rye that are notably resistant to gastrointestinal digestion. After ingestion, immunogenic peptides are subsequently recognized by T cells in the gastrointestinal tract. The only treatment for CD is a life-long gluten-free diet. As such, it is critical to detect gluten in diverse food types, including those where one would not expect to find gluten. The utility of liquid chromatography-mass …
Oil Yields For Allanblackia Parviflora (Tallow Tree) In Ghana: The Effects Of Oil Extraction Methods, Tree Morphology And Environmental Characteristics,
2019
Edith Cowan University
Oil Yields For Allanblackia Parviflora (Tallow Tree) In Ghana: The Effects Of Oil Extraction Methods, Tree Morphology And Environmental Characteristics, Wilfred Sefah, Pierre Horwitz, Mary C. Boyce, Lydia Sefah
Research outputs 2014 to 2021
This study provided understanding of the oil yields from Allanblackia parviflora fruits in Ghana. The study sought patterns of variations in oil yield between 157 trees, 16 communities and 3 ecological zones. Ecological zone and soil properties were considered as surrogates for growing conditions associated with tree and fruit morphology. Kernel and seed oil yields were determined using the manual screw press ranged from 31.3 to 61.8% and 0.2 to 36.8%, respectively. Large variations were observed between individual trees, and significant oil yield differences were observed between the 16 communities. There were no relationships between oil yields and soil properties, …
The Effects Of Germination And Roasting On Nutraceutical And Antioxidant Properties Of Jirani Variety Of Millet,
2019
Edith Cowan University
The Effects Of Germination And Roasting On Nutraceutical And Antioxidant Properties Of Jirani Variety Of Millet, Oluwatoyin Oluwole, Binosha W. M. A. D. Fernando, Keiron Audain, Olufemi Fasanmade, Oluwatosin Ijabaadeniyi, Kolawole Falade, Adjei M. Yaakwaah, Vijay Jayasena
Research outputs 2014 to 2021
The objective of this study was to determine the effects of processing variables (germination time, roasting temperature and time) on the phytonutrients and antioxidants activity of millet. The germination time employed in this study ranged from 24 - 72 h, roasting temperature ranged from 112.5 -120.0°C and the roasting time ranged from 15-21 min based on an earlier preliminary study. All samples exhibited antioxidant properties and these properties were dose dependent. Positive correlations were obtained between the antioxidant activity of the samples and the content of the phytochemicals. Both germination and roasting time had an effect on the total antioxidant …
Development Of Spray Dried Encapsulated Curcumin Powder As Functional Food Ingredient,
2019
Faculty of Science
Development Of Spray Dried Encapsulated Curcumin Powder As Functional Food Ingredient, Alwani Hamad
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study investigated the development of the spray-dried encapsulated curcumin powder from an oil-water-emulsion with better functional properties and evaluated its stability characters during storage and reconstitution. This research was conducted in four parts. The first part was the selection and optimization of curcumin solubility in edible oil. It was found that MCT oil was the best carrier oil with curcumin solubility of 17.01 mg/mL, which was achieved by heating at 80oC for 10 min. The curcumin solubility in MCT oil was further applied to nanoemulsion and conventional emulsion, in which the conventional one showed shorter stability...
Operational Efficiency In The Food And Beverage Industry Through Sustainable Water Consumption,
2019
Walden University
Operational Efficiency In The Food And Beverage Industry Through Sustainable Water Consumption, Christopher Weber
Walden Dissertations and Doctoral Studies
The scarcity of water poses a threat to domestic and global economic sustainability while inhibiting the operational efficiency of food and beverage industry firms. The purpose of this multiple case study was to explore the strategies some food and beverage industry leaders in the United States used for implementing sustainable water consumption practices to improve operational efficiency. The conceptual framework for the study was stakeholder theory. The primary data source was semistructured interviews with 4 food and beverage industry leaders in Wisconsin who have responsibility for implementing their firms' sustainability practices, and the secondary data source was corporate sustainability reports. …
Characterization Of Major Flavonols In Ramps (Allium Tricoccum),
2019
West Virginia University
Characterization Of Major Flavonols In Ramps (Allium Tricoccum), Wijdan M. Dabeek
Graduate Theses, Dissertations, and Problem Reports (ETD)
Ramps (Allium tricoccum) is a traditional plant in the eastern Appalachian Mountains. Ramps have been used in Appalachian folk medicine for its health promoting roles in lowering blood pressure and cholesterol. Information on the chemical composition of bioactive components responsible for the potential health benefits are scarce. Analysis of the chemical composition in similar Alliumplants showed that flavonols, induced similar health benefits. Therefore, the aim of this work is to characterize major flavonol conjugates in ramps. The secondary aim is to develop a preliminary quantification protocol. Flavonol glycosides were extracted in 50% methanol and 3% acetic acid. …
Evaluating The Potential Of Methyl Jasmonate Application As An Agricultural Practice On Phytochemicals In Brassica Vegetables: Sensory Quality, Cooking, And Cost-Benefit Analysis,
2019
West Virginia University
Evaluating The Potential Of Methyl Jasmonate Application As An Agricultural Practice On Phytochemicals In Brassica Vegetables: Sensory Quality, Cooking, And Cost-Benefit Analysis, Yu-Chun Chiu
Graduate Theses, Dissertations, and Problem Reports (ETD)
In the United States, Brassica vegetables, including broccoli (Brassica oleracea var. italica) and kale (Brassica oleracea var. acephala or Brassicae napus var. pabularia), are widely consumed and are easily accessible in farmer’s market or grocery stores with increasing interest of their health-promoting properties. For example, the consumption of broccoli has been associated with anti-cancer activity in in vitro and in vivo trails due to the high content of phytochemicals, minerals, vitamins, and fibers. Application of methyl jasmonate (MeJA) has been reported to enhance the potential health-promoting compounds in Brassica vegetables, glucosinolates (GS), especially indolyl GS neoglucobrassicin …
Predicting Quality Attributes And Waste Of Strawberry Packed Under Modified Atmosphere Throughout The Cold Chain,
2019
Technological University Dublin
Predicting Quality Attributes And Waste Of Strawberry Packed Under Modified Atmosphere Throughout The Cold Chain, Kompal Johsi, Brijesh Tiwari, Patrick J. Cullen, Jesus Maria Frias
Articles
Modified Atmosphere Packaging (MAP) is used commercially to extend the shelf life of strawberries. The attainment of desired gas (O2, CO2) concentrations inside MAP relies on the product respiration and the mass transfer through packaging and will affect the quality. The objective of this work is to build a mathematical model for strawberries to assess the effect of the uncertainties on headspace gas concentration and quality: 1) cold chain related temperature and relative humidity variations and 2) variability associated to product respiration and quality based on literature. Weight loss was more influenced by the cold chain storage conditions (temperature and …
Island Invasion: The Silent Crisis In Hawaii,
2019
Claremont Colleges
Island Invasion: The Silent Crisis In Hawaii, Sophia Janssen
Pomona Senior Theses
Keeping out invasive species may, upon first review, seem like a trivial environmental cry from ecologists and deep environmentalists; a belated wish to return to an undeveloped world where nature was pristine. However invasive species create problems that impact all of us and can have far more severe consequences than changing a stunning landscape. These problems are heightened in islands like Hawaii, where the fragile ecosystems have developed over centuries of evolution and adaptation. The introduction of a disease-carrying mosquito can put the people of Hawaii at risk to many vector-born illnesses and create an epidemic, taking human life. The …
Why Csas Matter: (Re)Localizing For People-Based Food Networks,
2019
Claremont Colleges
Why Csas Matter: (Re)Localizing For People-Based Food Networks, Gretchen Alexander
Scripps Senior Theses
This thesis details the history of Claremont Market Shares, a Community Sourced Agriculture (CSA) project based out of Claremont, California. By using this project as a jumping off point for discussing local food networks, buzzwords such as "organic" and "local" are analyzed and re-defined. I argue for a people-based food network model over the currently popular 'place-based' that prioritizes producer-consumer relationships. The CSA functions as a sustainable model of this ideology.
Gut Microbiota Dependent Anti-Tumor Immunity Restricts Melanoma Growth In Rnf5−/− Mice,
2019
Sanford Burnham Prebys Medical Discovery Institute
Gut Microbiota Dependent Anti-Tumor Immunity Restricts Melanoma Growth In Rnf5−/− Mice, Yan Li, Roberto Tinoco, Lisa Elmén, Igor Segota, Yibo Xian, Yu Fujita, Avinash Sahu, Raphy Zarecki, Kerrie Marie, Yongmei Feng, Ali Khateb, Dennie T. Frederick, Shiri K. Ashkenazi, Hyungsoo Kim, Eva Guijarro Perez, Chi-Ping Day, Rafael S. Segura Muñoz, Robert Schmaltz, Shibu Yooseph, Miguel A. Tam, Tongwu Zhang, Emily Avitan-Hersh, Lihi Tzur, Shoshana Roizman, Ilanit Boyango, Gil Bar-Sela, Amir Orian, Randal J. Kaufman, Marcus Bosenberg, Colin R. Goding, Bas Baaten, Mitchell P. Levesque, Reinhard Dummer, Kevin Brown, Glenn Merlino, Eytan Ruppin, Keith Flaherty, Amanda Ramer-Tait, Tao Long, Scott N. Peterson, Linda M. Bradley, Ze’Ev A. Ronai
Department of Food Science and Technology: Faculty Publications
Accumulating evidence points to an important role for the gut microbiome in anti-tumor immunity. Here, we show that altered intestinal microbiota contributes to anti-tumor immunity, limiting tumor expansion. Mice lacking the ubiquitin ligase RNF5 exhibit attenuated activation of the unfolded protein response (UPR) components, which coincides with increased expression of inflammasome components, recruitment and activation of dendritic cells and reduced expression of antimicrobial peptides in intestinal epithelial cells. Reduced UPR expression is also seen in murine and human melanoma tumor specimens that responded to immune checkpoint therapy. Co-housing of Rnf5−/− and WT mice abolishes the anti-tumor immunity and tumor inhibition …
Mycoprotein: The Future Of Nutritious Nonmeat Protein, A Symposium Review,
2019
Marlow Foods, Stokesley, UK;
Mycoprotein: The Future Of Nutritious Nonmeat Protein, A Symposium Review, Tim Ja Finnigan, Benjamin T. Wall, Peter J. Wilde, Francis B. Stephens, Steve Taylor, Marjorie R. Freedman
Department of Food Science and Technology: Faculty Publications
Mycoprotein is an alternative, nutritious protein source with a meat-like texture made from Fusarium venenatum, a naturally occurring fungus. Its unique method of production yields a significantly reduced carbon and water footprint relative to beef and chicken. Mycoprotein, sold as Quorn, is consumed in 17 countries, including the United States. In line with current dietary guidelines, mycoprotein is high in protein and fiber, and low in fat, cholesterol, sodium, and sugar. Mycoprotein may help maintain healthy blood cholesterol levels, promote muscle synthesis, control glucose and insulin levels, and increase satiety. It is possible that some susceptible consumers will become sensitized, …
