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Local, Organic, Inexpensive And Safe: Can Large Retailers Do It All?, Henry An, Sebastien Pouliot, Richard Volpe 2016 University of Alberta

Local, Organic, Inexpensive And Safe: Can Large Retailers Do It All?, Henry An, Sebastien Pouliot, Richard Volpe

Sebastien Pouliot

One of the most important changes in the food industry in recent decades has been the increase in retailer concentration at the national level. The trade publication Progressive Grocer releases the Super 50 annually, a ranking of the 50 largest food retailers in the U.S., by receipts. In 1997 the top 5 retailers controlled 24 percent of the national market. By 2004 this figure was 46 percent and by 2010, 61 percent.1 Much of this change has been driven by waves of mergers and acquisitions (Franklin, 2001), but it is impossible to overlook the role that big box ...


Welfare Effects Of Mandatory Traceability When Firms Are Heterogeneous, Sebastien Pouliot 2016 Iowa State University

Welfare Effects Of Mandatory Traceability When Firms Are Heterogeneous, Sebastien Pouliot

Sebastien Pouliot

We develop a framework in which the cost of producing a quantity food and the cost of food safety differs across firms. We show that large firms may supply the safest food even though small firms have a cost advantage in producing safe food. The model shows that mandatory traceability can decrease the overall safety of food when small firms that supply the safest food exit the industry. Our model applies to food safety but can be applied to a wide range of issues related to regulation and product quality.


Consumer Confidence In Food Safety And The 2010 Egg Recall, Sebastien Pouliot 2016 Iowa State University

Consumer Confidence In Food Safety And The 2010 Egg Recall, Sebastien Pouliot

Sebastien Pouliot

Iowa egg producers recalled nearly 500 million eggs in August 2010. The typical effect of a recall is to cause a decline in the demand for the affected product, yielding a decrease in the price. In the case of August 2010 egg recall, the price of eggs increased in the following weeks. This essay investigates the market effects of the egg recall. I estimate a system of simultaneous equations that includes supply and demand equations for the two main segments of the US industry. This essay offers preliminary evidence of the market effects of the August 2010 egg recall and ...


Potato Cultivar Differences Associated With Mealiness, Diane R. McComber, Harry T. Horner, Mark A. Chamberlin, David F. Cox 2016 Iowa State University

Potato Cultivar Differences Associated With Mealiness, Diane R. Mccomber, Harry T. Horner, Mark A. Chamberlin, David F. Cox

Harry Horner

Russet Burbank, Norchip, Pontiac, and LaSoda potato cultivars were examined for the parameters mealy and waxy. Russet Burbank was judged dry, hard and particulate, typifying mealiness. Using phase contrast microscopy and scanning electron microscopy, raw mealy cells were determined to be larger and more irregularly shaped than cells from waxy cultivars. Mealy cooked cells were engorged with gelatinized starch, cell walls were more polarized, and cell shapes were better retained after mashing, when compared to waxy cells. NMR-T2 bound water readings from Russet Burbank and Pontiac samples did not differ from each other. Starch granule sizes and shapes varied by ...


A Three-Year Level Study Of The Profitability Of Corn And Soybean Production, Todd D. Davis, william m. edwards 2016 Iowa State University

A Three-Year Level Study Of The Profitability Of Corn And Soybean Production, Todd D. Davis, William M. Edwards

william edwards

Crop producers face many decisions each year about the quantity and quality of inputs to use, the purchasing of these inputs, and the timing of production operations. Because their time for gathering and analyzing information on which to base management decisions is limited, they need to know which decision, areas have the greatest impact on profitability. A set of detailed and accurate records of production, costs, and returns from a group of producers growing corn and soybeans in Iowa over a three-year period was.available from Iowa State University Extension. This information was used to assess the relative importance of ...


From Milpas To The Market: A Study On The Use Of Metal Silos For Safer And Better Storage Of Guatemalan Maize, José Rodrigo Mendoza 2016 University of Nebraska-Lincoln

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

Dissertations & Theses in Food Science and Technology

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 ...


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 2016 University of Nebraska-Lincoln

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

Nutrition & Health Sciences Dissertations & Theses

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 ...


From Empty Lot To Garden Plot: Urban Agriculture In Chula Vista, Jennifer E. Gutierrez 2016 University of San Francisco

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 ...


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 2016 University of Nebraska-Lincoln

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

Dissertations & Theses in Food Science and Technology

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 ...


The Food Industry’S Perception Of Economically Motivated Adulteration And Related Risk Factors, Lindsay Colleen Murphy 2016 University of Tennessee - Knoxville

The Food Industry’S Perception Of Economically Motivated Adulteration And Related Risk Factors, Lindsay Colleen Murphy

Masters Theses

The United States of America has numerous safeguards in place to protect our food supply, including federal regulations and the food and beverage industry’s dedication to food safety. One of the issues that the food and beverage industry continuously battles is the prevalence of intentional adulteration. The Food Safety Modernization Act (FSMA) specifically addresses intentional adulteration and its sub-category of economically motivated adulteration (EMA) by requiring all facilities that supply food to the US to assess the vulnerabilities within their operation in order to prevent events that could cause public harm. The purposes of this study are threefold: (1 ...


Odor-Induced Taste Modifications In Teas, Rachel Elizabeth Isaacs 2016 University of Tennessee - Knoxville

Odor-Induced Taste Modifications In Teas, Rachel Elizabeth Isaacs

Masters Theses

Although odorants and tastants are perceived by two different sensory modalities, the perceived taste qualities of a solution may be modified with the addition of an odorant. While many studies have investigated odor-induced taste modifications in model solutions, there is a lack of conducted research examining odor-induced taste modifications in complex food systems. The research objective was to determine the effect of added vapor-phase stimuli on the perceived sweetness of a model solution and complex food system.

Eight vapor-phase stimuli (i.e. blueberry, caramel, ginger, honey, lemon, orange, peach, and strawberry) were selected for investigation. The study was conducted in ...


Evaluation Of Protein Source At Breakfast On Energy Metabolism, Metabolic Health, And Food Intake: A Pilot Study, Lauren A. Cambias 2016 University of Arkansas, Fayetteville

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

Human Nutrition and Hospitality Innovation 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 ...


Mini Series Presentations, Robert L. Moody IV, Natasha S. Natraj 2016 Otterbein University

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

SYE Legacies: Student Group 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 ...


The Archaeology Of Appetites, Molly S. Schonert 2016 University of North Carolina at Charlotte

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 ...


Hunger Doesn't Take A Spring Break, Jessica Isaacs 2016 Nutrition Society

Hunger Doesn't Take A Spring Break, Jessica Isaacs

Engagement and 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 ...


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 2016 George Washington University

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 - Present

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 ...


Identification Of Species In Ground Meat Products Sold On The U.S. Commercial Market Using Dna-Based Methods, Dawn Kane, Rosalee S. Hellberg 2016 Chapman University

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 ...


Dna Barcoding Reveals Mislabeling Of Game Meat Species On The U.S. Commercial Market, Charles Quinto, Rebecca Tinoco, Rosalee S. Hellberg 2016 Chapman University

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 ...


Project Oasis: Optimizing Aquaponic Systems To Improve Sustainability, Siddharth Nigam, Paige Balcom 2016 University of New Hampshire, Durham

Project Oasis: Optimizing Aquaponic Systems To Improve Sustainability, Siddharth Nigam, Paige Balcom

Honors Theses and Capstones

Started in Fall 2015, Project OASIS (Optimizing Aquaponic Systems to Improve Sustainability) is an interdisciplinary capstone project with the goal of designing a sustainable and affordable small-scale aquaponic system for use in developing nations to tackle the problems of malnutrition and food insecurity. Aquaponics is a symbiotic relationship between fish and vegetables growing together in a recirculating system. The project’s goals were to minimize energy consumption and construction costs while using universally available materials. The computational fluid dynamics (CFD) software OpenFOAM was used to create transient and steady-state models of fish tanks to visualize velocity profiles, streamlines, and particle ...


Preference Mapping Of Whole Grain And High Fiber Products: Whole Wheat Bread And Extruded Rice And Bean Snack, Ashley J. Bernstein 2015 University of Nebraska-Lincoln

Preference Mapping Of Whole Grain And High Fiber Products: Whole Wheat Bread And Extruded Rice And Bean Snack, Ashley J. Bernstein

Dissertations & Theses in Food Science and Technology

The rise of unhealthy lifestyles and diets among Americans is leading to an influx of health-conscious consumers on the search for more nutritious, health-promoting food options that match their taste preferences. The aim of this research is to determine consumer preferences and specific attributes of whole grain and high fiber products that drive acceptability through descriptive analysis and preference mapping on whole wheat breads and an extruded pinto bean and brown rice flour snack puff.

Commercial whole wheat breads, characterized by 26 appearance, aroma, flavor, and texture attributes, were separated into two distinct groups. The first group consisted of attributes ...


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