Life Sciences Commons^™

Sorghum Phenolic Extracts: Chemical Characterization And Biological Activity Determination, James Jordan Bradwell

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Red sorghum contains phytochemicals such as 3-deoxyanthocyanidins and flavonoids with reported health benefits. The objective was to determine the chemical composition of sorghum phenolic extracts that were extracted with acidified methanol and separated into co-pigments and anthocyanin fraction by chromatographic procedure. In addition, the ability of sorghum extract to modify activation of the inflammasomes, a macromolecular protein complex involved in several malignancies, was evaluated. The total polyphenols, total flavonoids and total anthocyanins of the sorghum phenolic extract was quantified and phenolic profile was determined by high performance liquid chromatography. The ability to modify the inflammasomes was evaluated using THP-1 human …

Squeaver, Cole Stonebrook, Matthew Frana, Samuel Tabor

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Overhanging limbs pose a threat to many homeowners with trees in their yard. If these limbs fall, property damage and personal injury are a major possibility. Currently the two methods used to cut and remove these limbs are hiring a tree service to use a boom truck to lift an arborist up to the limb or having a tree climber cut and lower the limb. Both methods are unsafe and expensive. Our design will be a tree-trimming device that can be rented from an equipment rental facility and operated by the homeowner. The machine will have the capability to extend …

An Epidemiological Study Of Ankle Injuries Among Football Players At A Division I University, Amy Elizabeth Estep

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Ankle injuries are one of the most common injuries experienced by collegiate football players1. Analysis of ankle injury reports can help sports medicine staff prevent these types of injuries among football athletes by better understanding the factors surrounding the injury2. The purpose of this study was to examine the risk factors associated with ankle injuries (N=120) experienced by football players (N=222) at a Division I University during three football seasons (August 2013-December 2015). METHODS: De-identified data from the Sports Injury Monitoring System (SIMS) was used to calculate ankle injury incidence rates (per 1,000 exposures) by player position and type of …

Stability Of Sorgum Bicolor Alcoholic Extract As Affected By Ph And Temperature, James Jordan Bradwell

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Storage stability of Sorghum bicolor alcoholic extract as affected by pH and temperature

Jordan Bradwell, Philipus Pangloli, Vermont P Dia

Department of Food Science and Technology, University of Tennessee Institute of Agriculture, Knoxville TN

Red sorghum contains phytochemicals such as 3-deoxyanthocyanidins and flavonoids with potential application in food as coloring and health promoting agents. The objective was to determine the stability of methanolic and ethanolic extracts of sorghum as affected by pH (2, 4 and 6) and temperature of storage (4 and 22 °C). The following parameters were measured: polyphenol concentration, absorbance at 490 nm and L*, a* and b*-values …

Design Of A Mobile Shade And Cooling Structure For Grazing Dairy Herds, William Barbour, Ellen Moore, Jay Mcmillan

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

The U.S. organic dairy industry has experienced significant growth in recent years: over 10% growth annually since 2009 and 14.5% from 2010 to 2011; total market share is approximately 5% in the United States. The USDA places certain requirements on diary products that are certified organic, some of which are aimed at grazing practices. One challenge farmers must overcome to comply is keeping the cows in optimum conditions in a free-range grazing scenario; poor conditions such as excessive heat can decrease milk production and pose an economic burden on the dairy. The proposed system intends to control environmental conditions for …

Evaluating The Cytotoxic Effects Of Cellulose Nanocrystals (Cncs) Using Autobioluminescent Yeast And Human Cells, Julianna Hughes Burchett

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Cellulose nanocrystals (CNCs) are widely used in different industries including pharmaceutical and cosmetic production due to their adept physical and biological properties. Because CNCs are becoming a more prevalent material and have a high potential of being redistributed in the environment, it is important to understand their toxic potentials in biological systems, including organisms of various trophic levels. This study evaluated the cytotoxic effects of CNCs in the lower eukaryotic organism Saccharomyces cerevisiae and human embryonic kidney (HEK293) cells using autobioluminescent yeast and human cell reporters, respectively. The S. cerevisiae and HEK293 reporter cells were engineered to express a synthetic …

Habituation Rate To Foods Of Differing Fat And Sugar Content In Healthy Weight Women, Stephanie N. Eddy

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Objectives:

This study examined habituation rates to foods high and low in sugar and fat, and investigated the relationship between food addiction (FA) scores and habituation rates.

Methods:

A one-group, within-subjects factor design (dried apricots [low in fat and sugar] and chocolate cake [high in fat and sugar]) was used. Participants played a computer task, which assesses habituation, for food points, with sessions counter-balanced by food. The computer task has 12, 2-minute trials, in which points for 75 kcal of food can be earned. The task is programmed at a variable interval of 120 ± 42 seconds reinforcement schedule (i.e., …