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Articles 1 - 8 of 8
Full-Text Articles in Food Processing
Efficacy Of Natural Compounds With Novel Carrier Systems For Controlling Campylobacter Jejuni In Post-Harvest Poultry, Sandip Shrestha
Efficacy Of Natural Compounds With Novel Carrier Systems For Controlling Campylobacter Jejuni In Post-Harvest Poultry, Sandip Shrestha
Graduate Theses and Dissertations
Campylobacter jejuni, a leading cause of bacterial gastroenteritis worldwide, is strongly associated with the consumption and/or mishandling of raw contaminated poultry products. Thus, interventions aiming to reduce C. jejuni counts on poultry products could greatly reduce the incidence of human campylobacteriosis. In the first study, the efficacy of a generally recongnized as safe (GRAS) compound, carvacrol (CR; derived from oregano oil), as an antimicrobial wash treatment to reduce C. jejuni on chicken skin was evaluated. Three delivery systems of CR: suspension, emulsion and nanoemulsion were used. C. jejuni counts were reduced up to 4 log10 cfu/sample by 2% dose of …
Effects Of Serving Temperature On Sensory Perception And Acceptance Of Brewed Coffee, Matthew James Chapko
Effects Of Serving Temperature On Sensory Perception And Acceptance Of Brewed Coffee, Matthew James Chapko
Graduate Theses and Dissertations
Coffee continues to be one of the most widely consumed beverages worldwide. How an individual perceives a cup of coffee is impacted by a plethora of factors including origin, growing climate, roasting level, and consumption habits. This thesis utilized both trained descriptive panelists and untrained consumer panelists to analyze how serving/consumption temperature modulates sensory perception of brewed coffee in regards to appearance, aroma, flavor, taste, and mouthfeel. Three varieties of coffee (Colombia, Ethiopia, and Kenya) were brewed and served to panelists at four temperatures: 70, 55, 40, and 25 °C. In one study (Study 1, Chapter 3), results from descriptive …
Investigating The Potential Of Plant-Derived Antimicrobials For Controlling Campylobacter Jejuni In Poultry And Poultry Products, Basanta Raj Wagle
Investigating The Potential Of Plant-Derived Antimicrobials For Controlling Campylobacter Jejuni In Poultry And Poultry Products, Basanta Raj Wagle
Graduate Theses and Dissertations
Campylobacter jejuni infection in humans is strongly associated with the handling and consumption of contaminated poultry products. Interventions reducing C. jejuni contamination in poultry would reduce the risk of subsequent human infections. In the first study, the efficacy of a Generally Recognized as Safe (GRAS) compound, eugenol (EG; derived from cloves), as an antimicrobial dip treatment to reduce C. jejuni in postharvest poultry was evaluated. The antimicrobial efficacy of EG was studied in suspension, emulsion and nanoemulsion delivery systems. EG suspension reduced C. jejuni counts with the greatest reduction of >2.0 Log CFU/sample for the 2% dose of EG (P<0.05). Eugenol emulsions or nanoemulsions did not provide any additional Campylobacter reduction when compared with suspension alone. In the second study, the efficacy of pectin or chitosan coatings fortified with eugenol to reduce C. jejuni on chicken wingettes was investigated. Inoculated wingettes were randomly assigned to controls, eugenol (0.5, 1 or 2%), pectin (3%), chitosan (2%) or their combinations. Following 1 min of coating, wingettes were air dried (1 h) and sampled on d 0, 1, 3, 5, and 7. The incorporation of 0.5, 1 or 2% eugenol in the pectin improved coating efficacy against C. jejuni whereas the efficacy of chitosan coating was improved by 2% eugenol treatment (P<0.05). Exposure of C. jejuni to eugenol, chitosan or combination significantly modulated select genes encoding for motility, quorum sensing and stress response. In the third study, the efficacy of eugenol, trans-cinnamaldehyde and carvacrol in inhibiting C. jejuni biofilm formation and inactivating mature biofilm was evaluated. For the inhibition study, C. jejuni was grown either in the presence or absence of sub-inhibitory concentrations of phytochemicals and biofilm formation was quantified at 24 h intervals by enumeration. For the inactivation study, mature C. jejuni biofilms were exposed to the phytochemicals (0, 0.25, 0.5, or 1%) for 1, 5, or 10 min, and surviving C. jejuni in the biofilms were enumerated. All phytochemicals reduced C. jejuni biofilm formation as well as inactivated mature biofilm at both temperatures (P<0.05). Moreover, scanning electron microscopy revealed disruption of biofilm architecture and loss of extracellular polymeric substances after treatment.
A Retrospective Assessment Of Us Pork Productions: 1960 To 2015, Ben Putman, Jacob Hickman, Prathamesh Bandekar, Marty Matlock, Greg Thoma
A Retrospective Assessment Of Us Pork Productions: 1960 To 2015, Ben Putman, Jacob Hickman, Prathamesh Bandekar, Marty Matlock, Greg Thoma
Food Systems
The primary goal of this study is to assess the carbon, energy, water and land footprints per kg (2.2 pounds) of live weight (LW) pork produced at five-year increments between 1960 and 2015. This assessment utilizes the Life Cycle Assessment (LCA) methodology, which is a technique to assess the potential environmental impacts associated with a product system by compiling an inventory of relevant energy and material flows, evaluating the associated burdens, and interpreting the results to assist in making more informed decisions and to provide an understanding of the drivers of change over the past 55 years. This LCA is …
Effects Of Mitochondrial Nadp+-Dependent Isocitrate Dehydrogenase Deficiency On Fructose-Induced Obesity In Mice, Allison Michelle Montalbano, Kaleigh Elizabeth Beane
Effects Of Mitochondrial Nadp+-Dependent Isocitrate Dehydrogenase Deficiency On Fructose-Induced Obesity In Mice, Allison Michelle Montalbano, Kaleigh Elizabeth Beane
Human Nutrition and Hospitality Management Undergraduate Honors Theses
Obesity prevalence in the United States continues to increase and is associated with health consequences such as type 2 diabetes, hypertension, atherosclerosis, and hyperlipidemia. Among many contributing factors to obesity, fructose may be one of the major reasons as it disrupts the antioxidant system thereby resulting in an accumulation of reactive oxidative species and leading to obese conditions. The enzyme, isocitrate dehydrogenase 2 (IDH2), reduces nicotinamide adenine dinucleotide phosphate from the TCA Cycle, hence might be implicated with not only energy metabolism but also cellular redox homeostasis. Therefore, the hypothesis was that IDH2 deficiency in mice would exacerbate hepatic lipid …
An Evaluation Of Breeding, Agronomic, And Processing Methodologies Of Vegetable Soybean (Edamame) To Increase Domestic Production In The United States Market, David Octor Moseley
An Evaluation Of Breeding, Agronomic, And Processing Methodologies Of Vegetable Soybean (Edamame) To Increase Domestic Production In The United States Market, David Octor Moseley
Graduate Theses and Dissertations
Edamame is a food-grade soybean (Glycine max (L.) Merrill) that is either harvested immature (R6 stage) or after plant maturity (R8 stage). At R6, the premium product will have crescent- shaped large green pods and gray pubescence. At R8, the seed will either have stayed green or will have turned yellow, black, or brown. Edamame is a healthy snack with a sweet flavor and firm texture. The edamame market is growing in the United States, creating a need for more adapted varieties. The genetic diversity is low among adapted large-seeded breeding lines. Finding diverse accessions will help develop larger and …
Nutraceutrical Snack Prepared From Sprouted Rough Rice And Green Gram And Its Physichocemical Properties, In Vitro Glycemic Index, And Sensory Attributes, Rachel Browder
Food Science Undergraduate Honors Theses
Snacks make up a large portion of the U.S. daily meals, but unhealthy snacks may be causing consumers to become overweight or obese. A healthy alternatives are germinated cereals and legumes, which undergo chemical compositional changes producing smaller size molecules for easier digestion and generate bioactives. Therefore, the objective of this research was to develop a healthy and nutritional snack chip from germinated, Arkansas produced rough rice and germinated green gram that will be easier for the body to digest, provide much higher protein than conventional chips or crackers with low on the glycemic index, and still meet consumer demands …
Evaluation Of Fresh-Market Potential Of Arkansas-Grown Fruit: Blackberries, Peaches, Table Grapes, And Muscadine Grapes, Molly Felts
Graduate Theses and Dissertations
Fresh-market produce is a major component of commercial market sales. However, shelf-life of fresh-market produce is limited, so evaluating postharvest potential (time from harvest to consumption) is critical. Fresh-market fruit can be impacted by many factors that deteriorate the quality of the fruit. Understanding the postharvest physiology of fruit can lead to better handling and storage conditions for extended shelf life and enhanced quality for the consumer. This research project was a collaborative effort within the University of Arkansas System Division of Agriculture between the Food Science and Horticulture Departments to evaluate the fresh-market potential of Arkansas-grown fruit. Physiochemical and …