Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

PDF

Food Science

2012

Institution
Keyword
Publication
Publication Type

Articles 1 - 30 of 288

Full-Text Articles in Life Sciences

Cloning, Expression, And Characterization Of Ara H 3, A Major Peanut Allergen, Cathryn E. Garvey Dec 2012

Cloning, Expression, And Characterization Of Ara H 3, A Major Peanut Allergen, Cathryn E. Garvey

University of New Orleans Theses and Dissertations

Abstract There are eight foods that contribute to food allergies in the western world and peanut is the most common. Currently, there are no medical treatments that can cure an individual of food allergy, so avoidance of the allergic food is the only option. In the United States, there are three immunodominant allergic proteins accountable for patient sensitization to peanut, Arachis hypogea 1, 2, and 3 (Ara h 1, Ara h 2, Ara h 3). Therefore, research into why peanuts are more allergic than other foods that have homologous proteins is critical and may be obtained by studying the structural ...


أمراض الأطفال المزمنة, Suad Fahad Alferaih Dec 2012

أمراض الأطفال المزمنة, Suad Fahad Alferaih

Dr. Suad Fahad AlFuraih

No abstract provided.


Photocalytic Degradation Of Malic Acid Under Thin Coated Tio2, Vanessa Silveira Rodgher Dec 2012

Photocalytic Degradation Of Malic Acid Under Thin Coated Tio2, Vanessa Silveira Rodgher

Electronic Thesis and Dissertation Repository

Opaque fluids have a limited irradiation transmission. Thus, their decontamination employing near UV irradiation poses significant technical challenges. In the present study, a thin UV-transparent/waterproof glue layer coated with a 1.5 wt% of TiO2 and a new PhotoReactor Cell were implemented. TiO2 irradiation in the PhotoReactor Cell was effected on the TiO2 particle side, not directly in contact with the fluid, allowing the postulation of an “h+” site mobility mechanism on photocatalysis.

Photocatalytic degradation experiments with malic and malonic acid in water at 10, 20, 30 and 40 ppm showed the complete degradation of malic ...


Microflora Of Traditional Mexican Corn Masa And Its Effect On Folic Acid Degradation, Stephen J. Adolphson Dec 2012

Microflora Of Traditional Mexican Corn Masa And Its Effect On Folic Acid Degradation, Stephen J. Adolphson

Theses and Dissertations

Many Mexican women consume inadequate amounts of folic acid. Fortification of the corn tortilla could be an effective way to help increase the folic acid levels among the Mexican population. Previous studies have shown significant folic acid losses in fortified tortilla dough (masa) as it is held before baking. This loss in folic acid could be due to degradation by lactic acid bacteria naturally present in the masa. The microflora of traditionally made nixtamalized corn masa from six tortilla mills in Guadalajara, Mexico were isolated and characterized, and their effect on folic acid content was evaluated. Isolated bacteria were identified ...


Differential Surface Deposition Of Complement Proteins On Logarithmic And Stationary Phase Leishmania Chagasi Promastigotes, Amanda Ramer-Tait, Soi Meng Lei, Bryan H. Bellaire, Jeffrey K. Beetham Dec 2012

Differential Surface Deposition Of Complement Proteins On Logarithmic And Stationary Phase Leishmania Chagasi Promastigotes, Amanda Ramer-Tait, Soi Meng Lei, Bryan H. Bellaire, Jeffrey K. Beetham

Faculty Publications in Food Science and Technology

Previous works demonstrated that various species of Leishmania promastigotes exhibit differential sensitivity to complement-mediated lysis (CML) during development. Upon exposure to normal human serum (NHS), cultures of Leishmania chagasi promastigotes recently isolated from infected hamsters (fewer than 5 in vitro passages) are CML-sensitive when in the logarithmic growth phase but become CML-resistant upon transition to the stationary culture phase. Visualization by light and electron microscopy revealed dramatic morphological differences between promastigotes from the 2 culture phases following exposure to NHS. Flow cytometric analysis demonstrated that surface deposition of the complement components C3, C5, and C9 correlated inversely with promastigote CML-resistance ...


Isolation, Antibiotic Resistance, And Molecular Characterization Of Campylobacter From Poultry, Swine And Dairy Cows, Willie James Taylor Dec 2012

Isolation, Antibiotic Resistance, And Molecular Characterization Of Campylobacter From Poultry, Swine And Dairy Cows, Willie James Taylor

Doctoral Dissertations

This study was conducted to determine presence, antibiotic resistance, and genetic relatedness of Campylobacter on diverse farm types. Cloacal fecal samples from poultry (broilers, layers, and turkey breeders), and fecal rectal samples from non-poultry animals (farrowing sows, finisher pigs, and lactating dairy cows) were tested for Campylobacter using BAM protocols. Agar disk diffusion method was used to determine antibiotic resistance, and PFGE analysis to determine genetic relatedness of isolates recovered within the different farm types. Campylobacter was detected in 34.8% (range of 6.7 to 62.0%, P < 0.001) of cloacal samples from poultry, in 61.4% (range of 55.0 to 69.0%, P < 0.05), and 26.0% (range of 19.0 to 34.0%, P < 0.05) of rectal samples from pigs, and dairy cows, respectively. Antibiotic resistance was detected in 30.2% (range of ...


Casein Micelles From Bovine Milk: Native Structure, Interactions, And Practical Applications Of Their Structural Modification, Raymundo Trejo Dec 2012

Casein Micelles From Bovine Milk: Native Structure, Interactions, And Practical Applications Of Their Structural Modification, Raymundo Trejo

Doctoral Dissertations

A definitive structure of the native casein micelle structure continues to elude researchers. Data and images obtained via cryo - transmission electron microscopy of isolated native casein micelles allowed for the reconstruction of a three dimensional model of the micelle; which contains water filled cavities (ca. 20 to 30 nm diameter), channels (diameter larger than ca. 5 nm), and several hundred high density nanoclusters (6-12 nm diameter) within the interior of the micelles.

The SDS polyacrylamide gel electrophoresis of isolated micelles (pH 6.8, 5.0) showed that whey proteins were found associated with the isolated micelles regardless of the pH ...


Whole Grains, Lindsay R. Macnab, Sarah L. Francis, Ruth E. Litchfield Dec 2012

Whole Grains, Lindsay R. Macnab, Sarah L. Francis, Ruth E. Litchfield

Human Sciences Extension and Outreach Publications

Including whole grains in your diet provides many health benefits, including reducing your risk for diabetes, heart disease and certain cancers. The information in this publication will help you understand your whole grain choices so you can select and enjoy a variety of healthy foods.


Effect Of Heat Treatments On The Properties Of Two Long-Grain Rice Cultivars During Storage, Youngbum Lee Dec 2012

Effect Of Heat Treatments On The Properties Of Two Long-Grain Rice Cultivars During Storage, Youngbum Lee

Theses and Dissertations

During storage, the milling and physicochemical properties and eating quality of rice change, which is generally termed `aging'. Aged rice is preferred by processors, and there are attempts to develop accelerated aging process using various heat sources. In this study, the effects of various heat treatments and their influence on the milling, pasting, thermal, and cooking properties of two long-grain rice cultivars during storage were investigated using a full-factorial experimental design. Two long-grain rice cultivars, Wells and XP723, was treated with 8 different heat treatments including one control and stored at room temperature for 180 days. Heat treatments included 2 ...


Characterization Of Starch By Vibrational Spectroscopy, Brandon H. Holder Dec 2012

Characterization Of Starch By Vibrational Spectroscopy, Brandon H. Holder

Dissertations, Theses, & Student Research in Food Science and Technology

To develop a dispersive Raman spectroscopic method for measuring amylose-amylopectin ratios of corn starch mixtures, 67 mixtures were prepared by randomly mixing waxy and normal corn starches. Amylose contents were measured using a dual wavelength iodine binding colorimetric method. Raman data were collected from 250 to 3200 cm-1 using optimized instrument parameters. Partial least-squares (PLS) and principal components regression (PCR) were used to prepare multivariate calibration models; however, PLS commonly outperformed PCR. Truncating the spectra to 250 to 2000 cm-1 improved the results (r2 of validation = 0.831, SEP = 2.90%). Removal of a cold water swelling ...


Genome-Wide Association Study For Oat (Avena Sativa L.) Beta-Glucan Concentration Using Germplasm Of Worldwide Origin, Mark A. Newell, Franco G. Asoro, M. Paul Scott, Pamela J. White, William D. Beavis, Jean-Luc Jannink Dec 2012

Genome-Wide Association Study For Oat (Avena Sativa L.) Beta-Glucan Concentration Using Germplasm Of Worldwide Origin, Mark A. Newell, Franco G. Asoro, M. Paul Scott, Pamela J. White, William D. Beavis, Jean-Luc Jannink

Food Science and Human Nutrition Publications

Detection of quantitative trait loci (QTL) controlling complex traits followed by selection has become a common approach for selection in crop plants. The QTL are most often identified by linkage mapping using experimental F2, backcross, advanced inbred, or doubled haploid families. An alternative approach for QTL detection are genome-wide association studies (GWAS) that use pre-existing lines such as those found in breeding programs. We explored the implementation of GWAS in oat (Avena sativa L.) to identify QTL affecting β-glucan concentration, a soluble dietary fiber with several human health benefits when consumed as a whole grain. A total of 431 lines ...


Impact Of Rearing Conditions On The Microbiological Quality Of Retail Poultry Meat, Bridgshe Hardy Dec 2012

Impact Of Rearing Conditions On The Microbiological Quality Of Retail Poultry Meat, Bridgshe Hardy

Masters Theses

Poultry and poultry products are a leading source of foodborne pathogens and illnesses. The rearing conditions of poultry can be an influential factor on the presence of foodborne pathogens including Campylobacter and Salmonella because some types of rearing practices have increased risks in terms of biosecurity. However, there is a gap in knowledge of food safety in raw chicken products and no studies have reported the microbiological quality of turkeys produced under different rearing environments. Thus, the aim of this study was to compare conventionally and organically-reared whole chicken and turkey carcasses purchased from three retail outlets in Knoxville, TN ...


Procuring And Tracing Produce From Small- And Medium- Scale Farmers For Use In Institutional Foodservice Operations In Nc, Sc And Ga, Anita Nunnelley Dec 2012

Procuring And Tracing Produce From Small- And Medium- Scale Farmers For Use In Institutional Foodservice Operations In Nc, Sc And Ga, Anita Nunnelley

All Theses

In response to concerns about an increasingly globalized food system in the United States, and increasing interest in the connections between small- and medium-scale (SMS) farms and institutional foodservice operations (IFO), the U.S. has recently developed legislation to link farmers to institutional markets (Joshi, Azuma, & Feenstra, 2008; Poulton, Dorward, & Kydd, 2010; USDA, 2010; Wootan, 2012). The purpose of this study is to determine if these connections are viable, sustainable and ultimately if the food is safe for consumption in the IFO. There are significant logistical, contractual and food safety concerns when sourcing food for IFOs from SMS farms. Each step from ordering to ...


Analyses Of Consumer Perceptions, Farmer Challenges, Polyamine, And Amino Acid Content Of Organic And Conventional Fresh Produce Grown In South Carolina, Emily Steinberg Dec 2012

Analyses Of Consumer Perceptions, Farmer Challenges, Polyamine, And Amino Acid Content Of Organic And Conventional Fresh Produce Grown In South Carolina, Emily Steinberg

All Dissertations

Execution of the USDA organic standards led to more support for local food as distinct from organic food. The current study was conducted to examine fresh produce perceptions and purchasing decisions of S.C. consumers. Four-hundred and eight S.C. consumers were surveyed at S.C. grocery stores. More than one-third of the S.C. consumers not knowing about the 'certified S.C. grown' program suggest that the S.C. Department of Agriculture (SCDA) may want to improve the promotion of their program. Eighty-five percent of consumers indicated that they would choose local over organic. This information would be useful ...


Predictability Of Food And Wine Pairing Using A Sensory Approach, Rebeckah L. Koone Dec 2012

Predictability Of Food And Wine Pairing Using A Sensory Approach, Rebeckah L. Koone

Theses and Dissertations

The purpose of this study was to explore significant differences in perception of match for a variety of food and wine styles; evaluate the impacts of wine sweetness level, wine acidity level, and wine tannin level on perception of match; and to investigate the impact of food and wine expertise on perceived level of match. A field research design was used to explore expert recommendations of food and wine combinations to obtain broader feedback on consumer perceptions. The population consisted of a convenience sample of 248 students enrolled in a continuing education course in food and wine pairing at George ...


New Technologies For Whole Wheat Processing: Addressing Milling And Storage Issues, Andres F. Doblado-Maldonado Nov 2012

New Technologies For Whole Wheat Processing: Addressing Milling And Storage Issues, Andres F. Doblado-Maldonado

Dissertations, Theses, & Student Research in Food Science and Technology

Whole wheat flour production and demand has increased dramatically during the last decade due to evidence supporting the benefits of whole grains in the diet. Hence, the food industry has provided a wide variety of new whole grain products. There are unique challenges that accompany whole wheat flour production, especially related to milling and storage. The present thesis provides new strategies on the adaptation of new technologies to overcome whole wheat processing issues. These issues are first discussed in a literature review and then followed by three research studies. In the first study, retail whole wheat flours were evaluated for ...


Evidence Of Transmission Of Escherichia Coli O157:H7 To The Tissues Or Phyllo-Plane Of Wheat, From Contaminated Soil, Seeds Or Water, Bismarck Antonio Martinez Nov 2012

Evidence Of Transmission Of Escherichia Coli O157:H7 To The Tissues Or Phyllo-Plane Of Wheat, From Contaminated Soil, Seeds Or Water, Bismarck Antonio Martinez

Dissertations, Theses, & Student Research in Food Science and Technology

Escherichia coli O157:H7 is a human pathogen that can cause a wide spectrum of disease symptoms, such as bloody diarrhea, hemorrhagic colitis, and hemolytic uremic syndrome (HUS). Escherichia coli O157:H7 illness are mainly associated with undercooked beef; however, in recent years outbreaks have been linked to fresh produce such as spinach, lettuce, and sprouts. In 2009, flour was implicated as a contamination source in the consumption of raw cookie dough resulting in 77 illness-cases. The objective of this research was to determine the possible route of transmission of E. coli O157:H7 into the phyllo-plane of wheat using ...


Sp746-B Good Agricultural Practices (Gap) Certification In Tennessee, Faith Critzer, Annette Wszelaki Nov 2012

Sp746-B Good Agricultural Practices (Gap) Certification In Tennessee, Faith Critzer, Annette Wszelaki

Food, Nutrition and Food Safety

No abstract provided.


Protecting Children From Overexposure To Lead In Candy And Protecting Children By Lowering The Blood Lead “Level Of Concern” Standard, Bryan Wagner, Colleen C. Hughes, Robert Sobsey Nov 2012

Protecting Children From Overexposure To Lead In Candy And Protecting Children By Lowering The Blood Lead “Level Of Concern” Standard, Bryan Wagner, Colleen C. Hughes, Robert Sobsey

Nevada Journal of Public Health

The American Public Health Association: Recognizing that in April 2004, the Orange County Register in an investigative report, published for the first time information that the state of California had been testing for lead in candies for decades but had not informed the public about the high lead levels in many candies, candy wrappers and seasonings (sold as a snack item and consumed as candy) imported from Mexico, the Philippines and other countries.


Sp737 Efnep Partner Brochure, Janie Burney Nov 2012

Sp737 Efnep Partner Brochure, Janie Burney

Food, Nutrition and Food Safety

Expanded Food and Nutrition Education Program information for program partners


Quality And Nutritional Status Of Fresh-Cut Tomato As Affected By Spraying Of Delactosed Whey Permeate Compared To Industrial Washing Treatment., Lubna Ahmed, Ana Belen Martin-Diana, Daniel Rico, Catherine Barry-Ryan Nov 2012

Quality And Nutritional Status Of Fresh-Cut Tomato As Affected By Spraying Of Delactosed Whey Permeate Compared To Industrial Washing Treatment., Lubna Ahmed, Ana Belen Martin-Diana, Daniel Rico, Catherine Barry-Ryan

Articles

The aim of this study was to examine the applicability of delactosed whey permeate 28 (DWP) treatment on preserving the quality and antioxidant attributes of fresh-cut 29 tomato. Tomatoes were treated with 3 % DWP by dipping, spraying and a 30 combination of both, stored at 4 °C for 10 days and compared with the industrial 31 standard, chlorine. The combination of dipping and spraying of DWP showed the best 32 results for all the markers tested. The combined treatment of dipping and spraying of 33 DWP significantly lowered total counts (~ 1.0 log cfu/g), yeast and moulds (~ 1.2 ...


Comparison Of Phenolic Compounds And Antioxidant Capacities Of Traditional Sorghum Beers With Other Alcoholic Beverages, Fatouma Abdoul-Latif, Romaric G. Bayili, Louis C. Obame, Mamoudou H. Dicko Prof. Oct 2012

Comparison Of Phenolic Compounds And Antioxidant Capacities Of Traditional Sorghum Beers With Other Alcoholic Beverages, Fatouma Abdoul-Latif, Romaric G. Bayili, Louis C. Obame, Mamoudou H. Dicko Prof.

Pr. Mamoudou H. DICKO, PhD

Thirty samples of sorghum beers “dolo” were selected from traditionally fermented household manufacturers from Burkina Faso. Dolo samples were screened for their total phenolic content, proanthocyanidins and putative antioxidant capacities, and were compared with industrial beers and wines. Total phenols were measured using the Folin-Ciocalteu method. Proanthocyanidins content were determined by the method of HCl-butanol hydrolysis. Antioxidant activities were evaluated both with 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay and by the trolox equivalent antioxidant capacity (TEAC) using 2,2’-azinobis(3-ethyl-benzothiazoline-6-sulfonic acid radical) (ABTS•+). The average contents of total phenols and proanthocyanidins were 506 μg GAE/ml of dolo and 45 μg ...


The Lobster Bulletin Fall 2012, Lobster Institute Oct 2012

The Lobster Bulletin Fall 2012, Lobster Institute

Lobster Bulletin

Group Seeks to Protect Ocean by Promoting Better Lawn Care Practices.

Lobster Institute 25th Anniversary Celebration Continues

Maine conforms First-Ever Case of West Nile Virus

Research Report: Direct determination of age in lobsters, and the Lobster cam back online soon


Food Fortification Improves The Intake Of All Fortified Nutrients, But Fails To Meet The Estimated Dietary Requirements For Vitamins A And B6, In Lactating South African Women, Peggy C. Papathakis, Kerry E. Pearson Oct 2012

Food Fortification Improves The Intake Of All Fortified Nutrients, But Fails To Meet The Estimated Dietary Requirements For Vitamins A And B6, In Lactating South African Women, Peggy C. Papathakis, Kerry E. Pearson

Food Science and Nutrition

Objective To investigate the impact of fortification by comparing food records and selected biochemical indicators of nutritional status pre- and post-fortification.

Design Mean intake from 24 h recalls (n 142) was compared with the Estimated Average Requirement (EAR) to determine the proportion with inadequate intake. In a subsample (n 34), diet and serum retinol, folate, ferritin and Zn were compared pre- and post-fortification for fortified nutrients vitamin A, thiamin, riboflavin, niacin, folic acid, Fe and Zn.

Setting South Africa.

Subjects Breast-feeding women (ninety-four HIV-infected, forty eight HIV-uninfected) measured at ∼6, 14, 24 weeks, and 9 and 12 months postpartum.

Results ...


Eat To Compete: What You Should Know About Fluids..., Ruth E. Litchfield, Karin Westberg, Lyndsey Metcalf Oct 2012

Eat To Compete: What You Should Know About Fluids..., Ruth E. Litchfield, Karin Westberg, Lyndsey Metcalf

Human Sciences Extension and Outreach Publications

Did you know thirst is NOT a good indicator of hydration. Find out about recommended fluid intake, and more.


How Much Are You Eating?, Ruth E. Litchfield, Naomi Ikeshima Oct 2012

How Much Are You Eating?, Ruth E. Litchfield, Naomi Ikeshima

Human Sciences Extension and Outreach Publications

Manage the food portions you put on your plate and you'll be better able to manage your weight. Find helpful tips to quickly choose food portions compatible with your age, gender, and activity level.

Also see how to personalize MyPlate recommendations with your needed daily amounts of grains, protein, vegetables, fruits, and dairy.


Eat To Compete: What You Should Know About Training Diets, Ruth E. Litchfield, Karin Westberg, Emily Lasley Oct 2012

Eat To Compete: What You Should Know About Training Diets, Ruth E. Litchfield, Karin Westberg, Emily Lasley

Human Sciences Extension and Outreach Publications

Did you know low-carbohydrate diets decrease athletes' ability to perform. Find out more about what to eat when competing.


Genetic Characterization Of North American Populations Of The Wheat Curl Mite And Dry Bulb Mite, Gary L. Hein, Roy French, Benjawan Siriwetwiwat, James W. Amrine Oct 2012

Genetic Characterization Of North American Populations Of The Wheat Curl Mite And Dry Bulb Mite, Gary L. Hein, Roy French, Benjawan Siriwetwiwat, James W. Amrine

Faculty Publications: Department of Entomology

The wheat curl mite, Aceria tosichella Keifer, transmits at least three harmful viruses, wheat streak mosaic virus (WSMV), high plains virus (HPV), and Triticum mosaic virus (TriMV) to wheat (Triticum aestivum L.) throughout the Great Plains. This virus complex is considered to be the most serious disease of winter wheat in the western Great Plains. One component of managing this disease has been developing mite resistance in wheat; however, identification of mite biotypes has complicated deployment and stability of resistance. This biotypic variability in mites and differential virus transmission by different mite populations underscores the need to better understand mite ...


Consumer-Centered Extension Education Website Increases Usage, Sarah L. Francis, Peggy Martin, Kristin Taylor Oct 2012

Consumer-Centered Extension Education Website Increases Usage, Sarah L. Francis, Peggy Martin, Kristin Taylor

Food Science and Human Nutrition Publications

Concern about young families' ability to cope with rising food prices resulted in creating Spend Smart. Eat Smart (SSES), a website focused on budgetfriendly nutrition information for limited resource audiences (LRA). SSES was redesigned using LRAs needs and preferences to increase use by LRAs. SSES usage increased after it was revised to incorporate interactivity and more consumerfriendly design elements.


Hyperspectral Imaging For Non-Contact Analysis Of Forensic Traces, Patrick Cullen, G. Edelman, T. Van Leeuwen, M. Aalders, E. Gaston Oct 2012

Hyperspectral Imaging For Non-Contact Analysis Of Forensic Traces, Patrick Cullen, G. Edelman, T. Van Leeuwen, M. Aalders, E. Gaston

Articles

Hyperspectral imaging (HSI) integrates conventional imaging and spectroscopy, to obtain both spatial and spectral information from a specimen. This technique enables investigators to analyze the chemical composition of traces and simultaneously visualize their spatial distribution. HSI offers significant potential for the detection, visualization, identification and age estimation of forensic traces. The rapid, non-destructive and non-contact features of HSI mark its suitability as an analytical tool for forensic science. This paper provides an overview of the principles, instrumentation and analytical techniques involved in hyperspectral imaging. We describe recent advances in HSI technology motivating forensic science applications, e.g. the development of ...