Other Food Science Commons^™

Sugar And Spice, Not Everything's Nice: Changing Dietary Habits In Bali, Harry Teplow

Independent Study Project (ISP) Collection

In this paper, I will explore the ways in which locals interact with new food options on the island of Bali. Specifically, I will explore dietary behaviors surrounding pre-­‐ packaged snacks and ‘fast-­‐food’ chains and determine whether the presence of these food options is affecting the Balinese’s relationship with more traditional cuisine. I will use everyday observations and conversations with locals to analyze dietary habits and the various food items that are being consumed while examining the potential dietary differentiation between two age groups. I will also consider health outcomes in Bali and discuss how changing dietary habits may be …

Particular Applications Of Food Irradiation Fresh Produce, Anuradha Prakash

Food Science Faculty Articles and Research

On fresh fruits and vegetables, irradiation at low and medium dose levels can effectively reduce microbial counts which can enhance safety, inhibit sprouting to extend shelf-life, and eliminate or sterilize insect pests which can serve to facilitate trade between countries. At the dose levels used for these purposes, the impact on quality is negligible. Despite the fact that regulations in many countries allow the use of irradiation for fresh produce, the technology remains under-utilized, even in the light of an increase in produce related disease outbreaks and the economic benefits of extended shelflife and reduced food waste. Putative concerns about …

Comparison Of Real-Time Pcr And Elisa-Based Methods For The Detection Of Beef And Pork In Processed Meat Products, Adam T. Perestam, Kayleigh K. Fujisaki, Omar Nava, Rosalee S. Hellberg

Food Science Faculty Articles and Research

Two commonly used methodologies for species detection within processed meat products are real-time polymerase chain reaction (PCR), a DNA-based method, and enzyme-linked immunosorbent assay (ELISA), a protein-based method. In this study, a real-time PCR assay was compared to a commercial ELISA kit based on sensitivity, specificity, agreement among duplicate samples, cost, time, and ease of use. Fifteen reference samples containing known percentages (0.1–99.9%, w/w) of pork and beef were analyzed in duplicate using both methods. Thirty commercial products, including sausages, pet treats, and canned meats, were also tested in duplicate with each method. Reference sample analysis showed real-time PCR was …

From Milpas To The Market: A Study On The Use Of Metal Silos For Safer And Better Storage Of Guatemalan Maize, José Rodrigo Mendoza

Department of Food Science and Technology: Dissertations, Theses, and Student Research

This project aimed to implement the use of metal silos to improve quality and safety of maize consumed by inhabitants of the highlands of Guatemala. This manuscript includes a literature review of the maize production chain in Guatemala, a survey about agricultural practices used in the region of study, as well as a characterization of the analyzed maize regarding its mycoflora, nutritional composition, and insect infestation. To better understand the current situation regarding agricultural practices and maize consumption, a survey was carried out. Sample consisted of 280 families representing 14 rural communities distributed in the townships of Todos Santos and …

Reducing Food And Packaging Waste Through Developing Edible Fruit Based Packaging Prototypes, Melanie Thatcher

Materials Engineering

Packaging is used to contain, preserve, protect, and advertise both manufactured and natural products. In 2013 it was reported that over thirty percent of solid waste in the United States was from packaging. One way to reduce the impact of packaging on the environment is to create a solution that is edible and sourced from a waste or secondary food product that is not currently being utilized. Food-contact packaging made from recycled materials must meet strict U.S. Food and Drug Administration (FDA) regulations to be utilized as raw material for packaging. Fruit pomace is a candidate material since it may …

Water And Energy Use Of Antimicrobial Interventions In A Mid-Size Beef Packing Plant, Rami M. M. Ziara, Shaobin Li, Bruce I. Dvorak, Jeyamkondan Subbiah

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

Data regarding the water and energy usage of current antimicrobial interventions in beef packing plants is scarce. The objective of this study was to collect representative water and energy usage data in a beef packing plant, with emphasis on antimicrobial interventions, to provide baseline data for comparison of new intervention technologies developed by researchers. Permanent and portable water flow meters were installed on the plant’s plumbing system to collect water flow data from March 2014 to March 2015. A local utility company was hired to meter electricity at the different subsystems using portable data loggers. The natural gas used in …

Characterization Of Extraction Methods To Recover Phenolic-Rich Extracts From Black Beans (Phaseolus Vulgaris) That Inhibit Alpha-Amylase And Alpha-Glucosidase Using Response Surface Approaches, Mazen Alharbi

Department of Nutrition and Health Sciences: Dissertations, Theses, and Student Research

Black beans contain high phenolic contents that are considered potent antioxidants. Relatively little is known about their ability to inhibit the carbohydrate-hydrolyzing enzymes α-amylase and α-glucosidase from releasing glucose from starch and/or disaccharides. The objective of this project was to determine the optimum procedures for extracting total phenols (TP), total flavonoids (TF) and total condensed tannins (TCT) from black beans (Phaseolus vulgaris), and then to determine the ability of the phenolic rich extracts to inhibit α-amylase and α-glucosidase. Due to their high phenolic levels, it was hypothesized that black beans would be an effective inhibitor of α-amylase and α-glucosidase, which …

From Empty Lot To Garden Plot: Urban Agriculture In Chula Vista, Jennifer E. Gutierrez

Undergraduate Honors Theses

This project is an exploration of how agriculture can be incorporated into the fabric of the city of Chula Vista, which has both uniquely urban and suburban areas. The proposal is to integrate agriculture as a design tool to reconnect to the city’s agricultural past and as a model for cities of the future. First, I discuss Chula Vista’s history and contemporary context, including demographics. I review the existing urban agriculture policies Chula Vista has and compare them to other cities in California. The second part of the project is concerned with how to choose and develop a site for …

Comparison Of Commercial Gecko Food On Growth Of Rhacodactylus Geckos, Kaitlin Leigh Richard

Honors Projects

Available food sources can provide a different effect on the growth rates of Rhacodactylus auriculatus. In this study three food sources were compared, Repashy MRP, Pangea super foods, and GeckoPro New Caledonian blend. These are composed of similar nutrients but tend to have some points where they vary. Thirty-six gargoyle geckos were put through a trial over a 14 week period to determine which commercially available food source provides the best nutrients for growth, as measured by weight gain. Three groups of twelve were chosen based on a variety of ages and sizes to be given three different foods …

Evaluation Of Protein Source At Breakfast On Energy Metabolism, Metabolic Health, And Food Intake: A Pilot Study, Lauren A. Cambias

Human Nutrition and Hospitality Management Undergraduate Honors Theses

Abstract

Over 30% of adults in the US are obese. A primary contributor to obesity is an unhealthy diet related to imbalanced macronutrients. Diets higher in protein (PRO) are associated with increased energy expenditure (EE) and reduced food intake. The objective of this pilot study was to determine if protein source at breakfast influences EE in young men (n=4; ages 18-35). Participants consumed three isocaloric (whey (WP), pea (PP), beef (BP); 275 kcal, 62% PRO, 23% CHO, 15% Fat) drinks in randomized, crossover design with a one-week washout period. Each test day EE, appetite, and cravings were assessed at 0, …

The Influences Of Texture And Mastication Pattern On Flavor Perception Across The Lifespan, Curtis Robert Luckett

Graduate Theses and Dissertations

Texture is an often-overlooked food attribute and is known to influence other food characteristics. More specifically, texture has been repeatedly to influence how we perceive flavor. Several studies have linked this change in flavor perception to the altered mastication patterns that accompany texture changes. This dissertation is composed of four studies that were designed to address how American food consumers view texture and other food attributes as well as characterize how texture and mastication can influence temporal flavor dynamics. The first study was a survey that outlined consumer attitudes towards a variety of different foods. This study solidified that texture …

Feasibility, Safety, Economic And Environmental Implications Of Whey-Recovered Water For Cleaning-In Place Systems: A Case Study On Water Conservation For The Dairy Industry, Yulie E. Meneses-GonzáLez

Department of Food Science and Technology: Dissertations, Theses, and Student Research

Several countries around the world are facing the challenge of producing food with limited water resources for a growing population. This reality is forcing all sectors involved in the food supply chain to look for water conservation strategies that contribute to assure global food security. Besides water consumption, the food industry has to deal with wastewater generation; therefore, water reconditioning and reuse is an attractive solution to address both issues. The goal of this research was to demonstrate that high quality water can be recovered from whey, a by-product of the cheese making process, and reused in cleaning-in place (CIP) …

Mini Series Presentations, Robert L. Moody Iv, Natasha S. Natraj

Senior Year Experience Student Projects

For the month of March, we implemented a mini education program at both EmblemHealth sites to engage, educate and empower members of the fitness center and weight management program. The program was designed to be fifteen minutes in length, allowing for more sessions over the course of 3 hours with one session a week alternating between topics. Upon survey evaluation of the 60 participants, they reported satisfaction with the overall program and validated the worth of EmblemHealth’s Fitness Center. The survey also showed that 10 out of 10 participants recognized sitting disease as a primary health concern after the presentation, …

The Archaeology Of Appetites, Molly S. Schonert

SEWSA 2016 Intersectionality in the New Millennium: An Assessment of Culture, Power, and Society

Through use of examining how food is produced, stored, distributed and consumed, one can take a glimpse into the past, present and even future of this planet–to better understand the complexity of human identity and the social practices or roles that define an individual, community or society. So this begins an exploration of the archaeology of food as a gendered commodity throughout our evolutionary past, emphasizing the infinite ways in which foodway practices exceeds the nutritional value of what our ancestors, family, friends and ourselves consume(d) on a daily basis. Foodways practices is an invaluable tool in any archaeologists’ tool …

Hunger Doesn't Take A Spring Break, Jessica Isaacs

Engagement & Service-Learning Summit

The rates of food insecurity amongst Hoosier children is slightly above the national average. For many of these children, school lunches are their primary source of nutrition. During school breaks, these children are at risk of going hungry. While Purdue Nutrition Society wishes that we could help all Hoosier children stay fed with nutritious meals, for now we are focusing on helping 20 local elementary students most at risk of going hungry over spring break. Working with Glen Acres Elementary in Lafayette, Indiana, a school where in 2014, over 71% of the students qualified for free or reduced lunches, we …

Use Of The Mitochondrial Control Region As A Potential Dna Mini-Barcoding Target For The Identification Of Canned Tuna Species, Jacquelyn K. Mitchell, Rosalee S. Hellberg

Food Science Faculty Articles and Research

In this study, a DNA mini-barcoding methodology was developed for the differentiation of species commonly found in canned tuna. Primers were designed to target a 236-base pair (bp) fragment of the mitochondrial control region (CR) and a 179-bp fragment of the first internal transcribed spacer region (ITS1). Phylogenetic analysis revealed the ability to differentiate 13 tuna species on the basis of the CR mini-barcode, except in a few cases of species introgression. Supplementary use of ITS1 allowed for differentiation of introgressed Atlantic bluefin tuna (Thunnus thynnus) and albacore tuna (Thunnus alalunga), while differentiation of introgressed Atlantic …

Effects Of Three-Times Daily Diet Soda Consumption For One Week On The Composition Of The Gut Microbiome In Healthy Young Adults, Jenna Abdelhadi, Domenica Simone, Charles Hadley King, Raja Mazumder, Keith A. Crandall, Allison C. Sylvetsky-Meni

GW Research Days 2016 - 2020

Epidemiologic studies report associations between artificial sweetener (ASW) consumption and metabolic abnormalities, yet well-designed human intervention studies in humans are limited. Given that ASW contain no or few calories, one potential mechanism through which ASW may influence metabolic risk is through altering the gut microbiota. As alterations in the gut microbiota are known to be implicated in the development of metabolic disease, the purpose of this study was to investigate the effects of one week of three times daily diet soda (with ASW) consumption on the gut microbiota in healthy college students. We hypothesized that participants randomized to consume diet …

Comparative Evaluation Of The Effect Of Methyl Bromide Fumigation And Phytosanitary Irradiation On The Quality Of Fresh Strawberries, Tamar Serapian, Anuradha Prakash

Food Science Faculty Articles and Research

Fresh strawberries are highly perishable and have a short shelf-life especially when the cold chain is not maintained. Strawberries exported to Asia are currently fumigated with methyl bromide for phytosanitary purposes, which exposes strawberries to warm temperatures for several hours and air freight without temperature control, resulting in a shelf life of just a few days in the destination country. Irradiation offers an efficacious alternative to fumigation and can be performed on cold fruit. This study was conducted to compare the quality of strawberries subject to methyl bromide fumigation or irradiation followed by simulated commercial air freight shipment of strawberries …

Dna Barcoding Reveals Mislabeling Of Game Meat Species On The U.S. Commercial Market, Charles Quinto, Rebecca Tinoco, Rosalee S. Hellberg

Food Science Faculty Articles and Research

Game meats represent a valuable specialty market in the United States that has high economic incentives associated with mislabeling. However, there is limited information on this topic. The purpose of this study was to conduct a market survey of game meats sold within the United States and identify instances of mislabeling using DNA barcoding. Products were also examined for the presence of threatened or endangered species. Fifty-four samples of whole-cut game meats were collected from online distributors in the United States and sequenced across a 658 base-pair region of the cytochrome c oxidase subunit I (COI) gene. The resulting DNA …

Identification Of Species In Ground Meat Products Sold On The U.S. Commercial Market Using Dna-Based Methods, Dawn Kane, Rosalee S. Hellberg

Food Science Faculty Articles and Research

The objective of this study was to test a variety of ground meat products sold on the U.S. commercial market for the presence of potential mislabeling. Forty-eight ground meat samples were purchased from online and retail sources, including both supermarkets and specialty meat retailers. DNA was extracted from each sample in duplicate and tested using DNA barcoding of the cytochrome c oxidase I (COI) gene. The resulting sequences were identified at the species level using the Barcode of Life Database (BOLD). Any samples that failed DNA barcoding went through repeat extraction and sequencing, and due to the possibility of a …