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Articles 1 - 8 of 8
Full-Text Articles in Life Sciences
Effect Of Aging Time And Retail Displaying Period With A Short-Term Temperature Abuse On Color Stability Of Two Beef Muscles, Derico Setyabrata, Hyun-Wook Kim, Yuan H. Brad Kim
Effect Of Aging Time And Retail Displaying Period With A Short-Term Temperature Abuse On Color Stability Of Two Beef Muscles, Derico Setyabrata, Hyun-Wook Kim, Yuan H. Brad Kim
The Summer Undergraduate Research Fellowship (SURF) Symposium
Meat color and tenderness are two most important quality factors affecting consumers’ decision on meat purchasing. Post-mortem meat aging has been widely practiced to improve palatability attributes, but could be adversely related to meat color. In particular, temperature abuse during aging or retail display can negatively affect the color stability of aged meat. The objective of this study was to determine the effect of aging time and short-term temperature abuse during display on color stability of two beef muscles (M. longissimus dorsi, LD and semitendinosus, ST). LD and ST muscles were separated from three beef carcasses, vacuum-packaged …
Optical Emission Spectroscopy Diagnostics Of Cold Plasmas For Food Sterilization, Abhijit Jassem, Michael Lauria, Russell Brayfield Ii, Kevin M. Keener, Allen L. Garner
Optical Emission Spectroscopy Diagnostics Of Cold Plasmas For Food Sterilization, Abhijit Jassem, Michael Lauria, Russell Brayfield Ii, Kevin M. Keener, Allen L. Garner
The Summer Undergraduate Research Fellowship (SURF) Symposium
There is a growing need for economical, effective, and safe methods of sterilizing fresh produce. The most common method is a chlorine wash, which is expensive and may introduce carcinogens. High voltage cold atmospheric pressure plasmas are a promising solution that has demonstrated a germicidal effect; however, the responsible chemical mechanisms and reaction pathways are not fully understood. To elucidate this chemistry, we used optical emission spectroscopy to measure the species produced in the plasma generated by a 60 Hz pulsed dielectric barrier discharge in a plastic box containing various fill gases (He, N2, CO2, dry …
Processing Methods And Storage Conditions On Chocolate And Coffee Powder Flow Properties, Sunland L. Gong, Andrea Della Bella, Teresa M. Carvajal
Processing Methods And Storage Conditions On Chocolate And Coffee Powder Flow Properties, Sunland L. Gong, Andrea Della Bella, Teresa M. Carvajal
The Summer Undergraduate Research Fellowship (SURF) Symposium
Powders are widely used in a countless number of industries, and are crucial to the quality control of products in areas such as pharmaceuticals and food. Particle physicochemical properties (morphology, solid state – crystalline, amorphous or both) are important factors for powder flow, which in turn can have significant impact on the stability, performance, and presentation of powders. Different processing methods as well as storage conditions such as relative humidity (RH) can drastically affect powder flow. Due to the widespread use of chocolate and coffee powder around the world, and their importance to the food industry, this work investigates two …
The Bone-Protective Effect And Mechanism Of Soluble Corn Fiber, Steven A. Jakeman
The Bone-Protective Effect And Mechanism Of Soluble Corn Fiber, Steven A. Jakeman
Open Access Theses
Postmenopausal women are at greatest risk among healthy individuals of developing osteoporosis and associated fractures. Nondigestible, fermentable dietary carbohydrates have been shown to improve calcium absorption in adolescents and bone-strength parameters in the rat model. Of particular interest is soluble corn fiber (SCF), which improved rat bone strength the most in a survey of novel fibers, and improved calcium absorption by up to 13% in teen girls. Hypotheses about the mechanism behind this effect revolve around the production of short-chain fatty acids (SCFAs) in the large intestine during fermentation. The purpose of this work was to determine if SCF would …
Influence And Characterization Of Microbial Contaminants Associated With The Fda Bam Method Used To Detect Listeria Monocytogenes From Romaine Lettuce, Christopher E. Bach
Influence And Characterization Of Microbial Contaminants Associated With The Fda Bam Method Used To Detect Listeria Monocytogenes From Romaine Lettuce, Christopher E. Bach
Open Access Theses
Over the past few decades in the US, fresh produce commodities have become increasingly prevalent vehicles for the attribution of foodborne illness. Recent outbreaks of the bacterial foodborne pathogen Listeria monocytogenes linked to fresh produce highlight this immediate issue facing food safety. The most widely used method to screen L. monocytogenes from food matrices in the US is the Bacteriological Analytical Manual (BAM) developed by the Food and Drug Administration (FDA). Detection of this pathogen from all foods is primarily accomplished by using four FDA approved Listeria selective media: Oxford (OXA), modified Oxford (MOX), Lithium chloride-phenylethanol-moxalactam fortified with esculin and …
Persistence And Internalization Of Listeria Monocytogenes In Romaine Lettuce, Lactuca Sativa Var. Longifolia, Archana G. Shenoy
Persistence And Internalization Of Listeria Monocytogenes In Romaine Lettuce, Lactuca Sativa Var. Longifolia, Archana G. Shenoy
Open Access Theses
Listeria monocytogenes, has been implicated in a number of outbreaks involving fresh produce. While no L. monocytogenes outbreaks have been linked to romaine lettuce, the number of lettuce recalls specific to L. monocytogenes is increasing. Understanding the potential of persistence and internalization of L. monocytogenes on and within romaine lettuce will aid in determining food safety risk. Persistence of three L. monocytogenes strains on three romaine lettuce cultivars was assessed independently by inoculating seeds in 25 ml of 8 log CFU/ml for 30 minutes. Seeds were grown on two soil types (i.e. standard potting mix, Indiana top soil) or sterile …
Effect Of Salts On The Structure-Function Relationships Of Sodium Kappa-Carrageenan, Lohit Myneedu
Effect Of Salts On The Structure-Function Relationships Of Sodium Kappa-Carrageenan, Lohit Myneedu
Open Access Theses
Carrageenans are sulfated marine polysaccharides used in a wide variety of food applications such as bodying, gelling, thickening and emulsion stabilization in water- and milk-based systems. They also find promising pharmaceutical usage due to antiinflammatory, anti-tumor and anti-coagulant activities, to name a few. Among them, kappa-carrageenan is favored owing to its desirable properties such as high gel strength and stability. Though the significance of cations on the structure-function relationships is well-documented, the role of anions is still elusive. This investigation aims at providing the pertinent details, especially in the presence of halide ions such as Cl-, Br- and I-. In …
Transcriptional Stress Response In Foodborne Pathogens, Aaron M. Pleitner
Transcriptional Stress Response In Foodborne Pathogens, Aaron M. Pleitner
Open Access Dissertations
Novel molecular method use is leading to better identification and understanding of microbial presence in food and food processing environments. The application of molecular methods targeting foodborne pathogens provides genetic profiling and targeted intervention methods. Whole-genome sequencing (WGS) provides information on the genomic uniqueness of specific pathogens and is being implemented in epidemiological investigations. Transcriptomic profiling allows for tracking the differential expression of genes and elucidating stress responses. Effective methods and treatments require an understanding of intervention (e.g. sanitizers) and treatment (e.g. antibiotics) mechanisms and efficacies. Accurate novel molecular method use requires proper learning of theory and data management. ^ …