Digital Commons Network^™

Uv-A Light And Heat-Activated Antimicrobial And Biodegradable Materials For Food Packaging And Preservation, Michael J. Bodily

All Graduate Theses and Dissertations, Fall 2023 to Present

Current food packaging materials are often non-biodegradable and harmful for ingestion, which poses a threat to the environment and public health. Thus far, the dangers of microbial contamination of food on human health have outweighed the risks associated with using these conventional packaging plastics. A possible solution to these issues is to use a combination of innovative materials and microbial inactivation methods that can potentially both reduce plastic waste and combat harmful microorganisms. In this study, two antimicrobial, biodegradable composites were developed and tested for their ability to inactivate two types of bacterium, Escherichia coli K12 and Listeria innocua, …

Disentangling Factors Contributing To Population Performance Of Zion Bighorn Sheep, Ian Montgomery

All Graduate Theses and Dissertations, Fall 2023 to Present

Bighorn sheep populations across the western United States face increasing challenges from habitat loss, disease, and predation. In Zion National Park and surrounding areas, survey-based estimates indicate that the desert bighorn sheep population declined from over 800 individuals in 2018 to fewer than 500 in 2021. Understanding what drives these population changes is critical for effective wildlife management and conservation. This research examined key factors influencing population growth and individual survival to inform strategies for recovery in this bighorn population.

First, we analyzed which vital rates contributed most to population trends by estimating survival and reproduction rates from ground and …

Establishing Methods For In Vitro Static Culture Of Gut Microbiomes For Nutritional Intervention Studies, Jeremy Mathew Case

Undergraduate Honors Capstone Projects

Lipid oxidation products (LOPs), which form during high-heat processing of oils common in Western diets, are known to cause inflammation and cellular damage. While LOPs have been implicated in exacerbating colitis and promoting colon tumorigenesis in mouse models, their direct impact on the gut microbiome remains poorly understood. This capstone project aimed to develop a low-cost in vitro protocol to culture the mouse gut microbiome under anaerobic conditions, enabling future investigations into the direct effects of bioactive dietary compounds such as LOPs. The study also assessed whether viable microbial communities could be recovered from fecal samples stored at -80°C. Fecal …

The Impact Of Lactoferrin And Iron-Enriched Whey On Iron Absorption, Gastrointestinal Symptoms, And Menstrual Health In Women, Mia Dustin

Undergraduate Honors Capstone Projects

Iron is an essential trace mineral involved in oxygen transport, energy metabolism, and cellular function, yet deficiency remains prevalent among women of reproductive age. In the U.S., approximately 20% of women aged 18-45 years fail to meet daily iron requirements due to lack of iron consumption in the diet, menstrual blood loss, or intense exercise, often leading to anemia, fatigue, and cognitive impairment. While ferrous sulfate is a common form of iron supplementation, it frequently causes gastrointestinal discomfort. Researchers have explored lactoferrin, a glycoprotein with immune and iron-binding properties, as an adjunct to traditional supplementation. This study examines the effects …

Survey Of Insect Pests On Cut Flowers In Utah, Elliot Roberts

Undergraduate Honors Capstone Projects

Cut flower production is a relatively new industry in the state of Utah, gaining momentum by 2020. However, little research concerning management of the crops and their pests has been conducted. One issue producers face are insects that harm the plants in ways such as feeding damage and transmission of diseases. Currently, it is unknown which insects target different species of cut flowers in Utah. Morphological identification of genera and species is often difficult or impossible because of the small size of many of the insects and minute differences between species. This project uses PCR and DNA sequencing to identify …

Screening Of A Diversity Of Legumes And Non-Legumes Forb Species At Five Strategic Locations Across Utah For The Development Of Smart Foodscapes, Surbhi Verma

All Graduate Theses and Dissertations, Fall 2023 to Present

Grass-dominated rangelands in the Western United States often lack sufficient protein for pregnant cows after grasses mature in mid- summer, leading ranchers to rely on expensive feed supplements such as protein cubes or alfalfa hay. The goal of this study was to screen 27 perennial legume and forb species with the potential to remain green into late summer and provide sufficient protein to supplement cows on grass-dominated rangeland. Three experiments were carried out to understand germination of species, plant establishment and persistence at five Utah locations, and agronomic characteristics. The seed of five hard-to-germinate species were studied for the ability …

Optimizing Nutrient Recycling To Achieve Zero–Discharge Management For Controlled Environment Agriculture, Noah James Langenfeld

All Graduate Theses and Dissertations, Fall 2023 to Present

Controlled environment agriculture (CEA) allows for human control of one or more environmental factors affecting crop production. Optimizing nutrient management in such systems allows for translation and predictions of sustainable management strategies in the field. These systems will be used to supply fresh food as public and private space agencies are planning to send humans to the Moon and Mars in the near future. Food resupply becomes increasingly difficult as the distance from Earth increases. Plants can be grown off-Earth as a food source, but their growth must be carefully managed to ensure long-term sustainability. I describe a model used …

Effects Of Plant Biostimulants On Onion Growth And Production Under Greenhouse And Field Conditions, Prakriti Nepal

All Graduate Theses and Dissertations, Fall 2023 to Present

The escalating impact of climate change on agricultural production underscores the need to investigate sustainable crop enhancement methods. This research explores the use of plant biostimulants to grow onion (Allium cepa L.) under varying environmental conditions. In the initial germination and greenhouse screening, seven biostimulants were tested on ‘Vaquero’ onion seeds: three bacterial products (Continuum, Spectrum DS, and Tribus Original), two mycorrhizal products (Mighty Mycorrhizae and Myco Apply), one seaweed extract product (Seaweed), and one product containing humic acid (Huma Pro 16). Mighty Mycorrhizae, Continuum, and Myco Apply supported faster germination, while seeds treated with Spectrum and Seaweed took …

Understanding The Impact Of Colloidal Calcium Phosphate On The Ph Variation In Cheddar Cheese During Early Stages Of Aging, Rachel Lindstrom

All Graduate Theses and Dissertations, Fall 2023 to Present

The Cheddar cheese industry has recently observed variation in the pH of their cheese during the early stage of storage. This variation may be due to the addition of the faster acid producing thermophilic starter culture Streptococcus thermophilus which was recently introduced into the Cheddar cheese making process. This starter culture may impact the calcium buffering properties of the cheese due to more retention of the insoluble calcium (INSOL Ca) within the cheese. To investigate this problem, we studied how insoluble calcium affects cheeses with pH ranging from 4.8 to 6.6 and found that INSOL Ca was positively correlated with …

Utah State University Commencement, 2025 – Uintah Basin Campus, Utah State University

Commencement Programs

2025 Commencement Ceremony for the Uintah Basin Campus of Utah State University.

Utah State University Commencement, 2025 – Main Campus, Utah State University

Commencement Programs

2025 Commencement Ceremony for the Main Campus of Utah State University.

Integrating Human-Centered Design Into Undergraduate Stem Capstone Courses: A Food Product Development Case Study, Saadeddine Shehab, Dawn Bohn, Lucas O'Bryan, Luettamae Lawrence, Mike Tissenbaum

Instructional Technology and Learning Sciences Faculty Publications

This study examines the integration of human-centered design (HCD) in a Food Science capstone course and explores its impact on students’ learning outcomes and skill development. This case study investigated how 42 undergraduate students engaged with HCD processes—including understanding, synthesizing, ideating, prototyping, and implementing—to develop innovative food products. Through pre- and post-surveys, interaction analysis, and performance assessments, the findings revealed that HCD activities significantly enhanced students’ knowledge, collaboration, creativity, and metacognitive skills. Additionally, students demonstrated improved food science competencies, such as product formulation and sensory evaluation. This study highlights the benefits of embedding HCD within STEM curricula to foster authentic, …

Evidence-Based Alternative Pain Management Techniques For Chronic Pain, Alise Williams Condie, Ashley Yaugher, Kira Swensen, Maren Wright Voss

All Current Publications

Chronic pain and opioid use have become topics of importance as opioid overdose deaths have risen to epidemic proportions throughout the nation. Chronic pain lasts for long periods of time and can be caused by a past injury or have no known cause. Opioids have been utilized to treat pain in the past, but it has been discovered that opioids are better used to treat acute pain and not chronic pain. Opioids can have negative consequences including changes to the brain, depression, increased pain, constipation, sedation, and even death. This fact sheet reviews and explains some of the most successful …

The Utah Statesman, April 21, 2025, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Impact Of Lactoferrin And Iron-Enriched Whey On Iron Absorption, Gastrointestinal Symptoms, And Menstrual Health In Women, Mia Dustin

Student Research Symposium

Background

• Iron is essential for oxygen transport, energy metabolism, and overall health. ¹
• In the U.S., 20% of women aged 18–45 do not meet the estimated average requirement (18 mg/day). ^2,3
• Ferrous sulfate (FS) effectively improves iron levels but often causes severe gastrointestinal (GI) side effects. ⁴
• Previous research has suggested that lactoferrin, a milk-derived glycoprotein, may provide comparable iron delivery with fewer GI issues. ⁴
• Research suggests that lactoferrin, a milk-derived glycoprotein, delivers iron as effectively as ferrous sulfate, with fewer gastrointestinal issues. ⁴
• This clinical trial, conducted at USU’s Center for Human Nutrition Studies, examined the effects of …

Harvest Extend Volunteers Report Improved Mental And Social Wellness, Clarissa Richins

Student Research Symposium

Introduction

Harvest Extend volunteers help reduce food waste, improve food security, and learn fruit preservation techniques

Frequency Of Fruit And Vegetable Consumption Among Women Diagnosed With Gestational Diabetes, Hailey Koster

Student Research Symposium

• Consuming fruits and vegetables has been associated with a reduced risk of gestational diabetes and improved pregnancy outcomes. ¹

• However, the majority do not meet the recommendation of five servings per day or 400 g per day according to the World Health Organization.²

Establishing Methods For In Vitro Static Culture Of Gut Microbiomes For Nutritional Intervention Studies, Jeremy Case

Student Research Symposium

The National Cancer Institute reports colorectal cancer as the leading cause of cancer death for individuals under 50 in the United States (American Cancer Society). These rates continue to rise with poor diet, microbiome dysbiosis, and gut inflammation being the primary drivers.

Our lab performs nutrient- intervention studies on DSS/AOM colitis-induced mouse models fed the total Western diet, reflective of the average American’s diet. A poor diet promotes gut microbiome dysbiosis and subsequent colitis, ultimately yielding colon cancer. We seek to understand how the introduction of a bioactive compound may lessen or promote these effects in in vivo mouse models. …

Empowering Girls In Sports: Combatting The Female Athlete Triad, Mia Dustin, Emma George, Whitney Stevenson

Student Research Symposium

The purpose of this project is to address the prevalence of the Female Athlete Triad among female high school athletes. Studies indicate that while the risk factors for the Female Athlete Triad are widespread, awareness of the condition among athletes and coaches remains low.¹ Female athletes also experience higher levels of body dissatisfaction, disordered eating patterns, and associated mental health concerns compared to their male counterparts.² ³ The prevalence of the Female Athlete Triad is particularly concerning due to its long-term implications, including low bone density, amenorrhea, muscular injuries, stress fractures, abnormal lipid profiles, irreversible bone loss, depression, low self-esteem, …

Plant-Based Substitutes For Gelatin In Gummy Bears, Neisha Christensen, Tiffany Stoker, Bethany Janes, Kaiah Thomas, Maryann Schneider

Student Research Symposium

Gummy bears are typically made using gelatin. Those who choose to follow a vegan/vegetarian diet are unable to eat products that contain gelatin, since gelatin is made from the collagen found in animal tissues. Additionally, people who avoid eating pork for religious or other reasons cannot consume gelatin, as it is commonly derived from pork.

Alternatives For Whey Protein Powder, Alleyah Murphy, Emily Jensen, Jaiden C., Spencer C.

Student Research Symposium

Protein shakes have become a popular product in the market, heavily advertised as convenient nutrient sources for active adolescents and adults. These products are widely available in grocery stores, pharmacies, and through online distributors (Deutch, 2022). Typically made with whey protein, they are unsuitable for individuals following vegan or lactose-free diets. The goal of this experiment is to evaluate the impact of substituting whey protein powder with equivalent amounts of pea, soy, and hemp seed protein powders on the taste, texture, viscosity, and protein content of vanilla protein shakes to identify the most suitable alternative

Utah's Farm To Fork Landscape: Stakeholders' Perspectives On Root Causes And Potential Solutions, Utsav Bhandari

Student Research Symposium

• Farm to Fork encourages direct connection between producers and consumers reducing the intermediaries (i.e., schools, pre-schools, daycare centers, etc.)
• Empowers local producers, boosts the local economy, enhances physical and mental well-being, and promotes self-sufficiency
• Utah's Farm to Fork Task Force was formed in 2015

Cultivating Community And Commerce: A Summary Of The Statewide Social And Economic Impacts Of Utah Farmers Markets, Jaclyn Pace, Bryn Watkins, Roslynn Mccann, Steven Price

Outcomes and Impact Quarterly

Data collected from six markets throughout the market seasons between 2023 and 2024 highlights the transformative impact of Utah’s farmers’ markets on the state’s economy, health, and sense of community. According to market patrons, Utah’s farmers' markets are vital economic and social hubs supporting local agriculture, small businesses, and community well-being.

Exploring Biostimulant Efficacy Under Limited Fertilizer And Water In Utah's Watermelon Production, Evan Christensen, Milena Maria Tomaz De Oliveira, Prakriti Nepal, Youping Sun

Plants, Soils, and Climate Faculty Publications

The western U.S. has recently experienced some of the driest conditions on record, and Utah has been in a multi-year drought (2019-2023) that affected the agricultural sector, including vegetable producers. While vegetables are not a primary agricultural crop in Utah, they are still an important part of the horticultural economy with 763 farms growing 6,138 acres. As the fourth largest acreage vegetable crop in Utah (almost 10% of the acreage) watermelon and related crops in the gourd family Cucurbitaceae (nearly 36% of total vegetable acreage) are important to vegetable growers. Watermelon is a water-intensive crop and requires an adequate supply …

Use Of Electrical Household Appliances And Risk Of All Types Of Tumours: A Case-Control Study, Shabana Noori, Abdul Aleem, Imrana Niaz Sultan, Afrasiab Khan Tareen, Hayat Ullah, Muhammad Waseem Khan

Biological Engineering Student Research

Introduction: The use of electrical appliances using extremely low frequency (ELF) electromagnetic fields (EMF) has increased in the past few years. These ELF MF are reported to be linked to several adverse health effects. However, only a couple of studies have been conducted on the association between risk of tumours and use of electronic devices using low frequency (LF) EMF. Methods: We studied the use of common household electrical appliances and suspected risk of tumours in a multi-hospital-based case-control study. In total, 316 patients were included in the final analysis. Results: The study results showed a below unity risk for …

Creaciones En La Cocina Para Comer Juntos En Familia, Celina Wille, Lacee Jimenez, Casey Coombs, Heidi Leblanc, Lea Palmer, Jocelin Gibson

All Current Publications

Esta publicación, basada en la guía nutricional del programa SNAP-Ed, ofrece consejos prácticos y recetas culturalmente relevantes para promover una alimentación saludable y fortalecer los lazos familiares durante las comidas. Incluye conceptos básicos de planificación, un menú de muestra, guías de MiPlato e información para fomentar la participación de los niños en la cocina.

Contrasting Effects Of Climate Warming On Hosts And Parasitoids: Insights From Rocky Mountain Aspen Leaf Miners And Their Parasitoids, Alisha A. Shah, Emily Hamant, Juan G. Rubalcaba, Beau Larkin, Andrew A. Forbes, H. Arthur Woods

Aspen Bibliography

Because temperature has pervasive effects on biological rates, climate warming may alter the outcomes of interactions between insect hosts and their parasitoids, which, for many host species, constitute the single largest source of mortality. Despite growing interest in parasitoid-host responses due to climate change, there are few empirical tests of thermal tolerance differences between non-model lepidopteran hosts and their parasitoids and almost none from mountain ecosystems where warming is occurring more rapidly. We examined the thermal ecology of a host–parasitoid interaction in the Rocky Mountains using the wild populations of the aspen leaf miner (Phyllocnistis populiella) and a …

The Utah Statesman, March 24, 2025, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Elevated Extinction Risk In Over One-Fifth Of Native North American Pollinators, Tara Cornelisse, David W. Inouye, Rebecca E. Irwin, Sarina Jepsen, Jonathan R. Mawdsley, Margaret Ormes, Jaret Daniels, Diane M. Debinski, Terry Griswold, John Klymko, Michael C. Orr, Leif Richardson, Nicole Sears, Dale Schweitzer, Bruce E. Young

Biology Faculty Publications

Pollinators are critical for food production and ecosystem function. Although native pollinators are thought to be declining, the evidence is limited. This first, taxonomically diverse assessment for mainland North America north of Mexico reveals that 22.6% (20.6 to 29.6%) of the 1,579 species in the best-studied vertebrate and insect pollinator groups have elevated risk of extinction. All three pollinating bat species are at risk and bees are the insect group most at risk (best estimate, 34.7% of 472 species assessed, range 30.3 to 43.0%). Substantial numbers of butterflies (19.5% of 632 species, range 19.1 to 21.0%) and moths (16.1% of …

Multi-Sensor Integration And Machine Learning For High-Resolution Classification Of Herbivore Foraging Behavior, Bashiri Iddy Muzzo, Kelvyn Bladen, Andres Perea, Shelemia Nyamuryekung’E, Juan J. Villalba

Wildland Resources Student Research

This study classified cows’ foraging behaviors using machine learning (ML) models evaluated through random test split (RTS) and cross-validation (CV) data partition methods. Models included Perceptron, Logistic Regression, Support Vector Machine, KNearest Neighbors, Random Forest (RF), and XGBoost (XGB). These models classified activity states (active vs. static), foraging behaviors (grazing (GR), resting (RE), walking (W), ruminating (RU)), posture states (standing up (SU) vs. lying down (LD)), and posture combinations with rumination and resting behaviors (RU_SU, RU_LD, RE_SU, and RE_LD). XGB achieved the highest accuracy for state classification (74.5% RTS, 74.2% CV) and foraging behavior (69.4% CV). RF outperformed XGB in …