Food Science Commons^™

North Atlantic Vibrio Vulnificus Surveillance From Postharvest Oysters At A Us Shellfish Processing Facility, Kenneth Lavalley, Joseph Dealteris, Michael Rice, Marta Gomez-Chiarri

Marta Gomez-Chiarri

Postharvest surveillance for Vibrio vulnificus by a commercial processing facility was conducted from May 2001 to September 2003. Harvest areas included the Delaware Bay, Long Island Sound and Prince Edward Island. Occurrence followed a seasonal distribution. Low densities were observed in June, increased through August, and became rare by September. Given the ubiquitous nature of marine Vibrios, it was not surprising to find V. vulnificus everywhere, which was investigated. Observations confirmed the importance of strict time/temperature and product handling practices by shellfish harvesters, dealers and processors. Mishandling led to a potentially dangerous and uncharacteristically high V. vulnificus observation.

Clare Miller, Clare Miller, Institute Of Child Nutrition

Oral History Project (all interviews)

Clare Miller spent her career first working for the Louisiana State Department of Education as an Area Supervisor before becoming the Food Service Director for the Diocese of Lafayette. She then went to work for the United States Department of Agriculture in Washington, DC, from where she retired.

Five Decades Of Agricultural Policies In Nigeria: What Roles Has Statistics Played?, Akinboyo O. I

Bullion

All over the country and internationally, the publications of the Central Bank of Nigeria (CBN) such as the Annual Report and Statement of Accounts, the Statistical Bulletin, Economic and Financial Review, the Bullion and Nigeria: Major Economic and Banking Indicators and those of the National Bureau of Statistics (NBS) have become a veritable source of data and reference materials on Nigeria. Without basic i n f o r m a t i o n o n e c o n o m i c developments, it would be very difficult for policy makers to assess economic performances. The f o …

Novel Method For Recovery Of Escherichia Coli O157:H7 From Beef Surfaces, Matthew Adam Becher

Masters Theses

A study was conducted to compare the efficiency of detection of Escherichia coli O157:H7 EDL 933 on external beef trim by commercial recovery systems based upon of the Microbial-Vac System (M-Vac) and excision sampling. Escherichia coli O157:H7 EDL 933 was cultured in tryptic soy broth for 24 hr at 37°C and transferred for three consecutive days before diluting and spot inoculating onto a 684 cm² piece of beef trim (10 CFU/684 cm²). Beef trim was sampled with the M-Vac by passing the sampling head over the entire surface area in a vertical sampling pattern. The sampling head …

“Intervention Strategies To Enhance The Safety Of Ready-To-Eat Meat Products By Plant Essential Oils, Chayapa Techathuvanan

Masters Theses

Components of plant essential oil (PEO) extracts are known to have antimicrobial properties. However, their antimicrobial efficacy in food systems is low due to their hydrophobic nature and association with other food components. Incorporation of PEO components into an appropriate carrier may offer a potential solution to improve their activity in food systems. This study was conducted to determine the effect of PEO components (thymol, eugenol, linalool, carvacrol, and cinnamaldehyde) incorporated into zein coating on inactivation of Listeria monocytogenes on a ready-to-eat meat model, frankfurters (hot dogs). Hot dogs were inoculated with 7 log CFU/sample and dipped into prepared PEO-zein …

Characterization Of Bioactive Phytochemicals From The Stem Bark Of African Mahogany Khaya Senegalensis (Meliaceae), Huaping Zhang

All Dissertations

ABSTRACT
African mahogany Khaya senegalensis (Desr.) A. Juss (Meliaceae) is a large tree growing mainly in the sub-Saharan savannah forests from Senegal to Uganda. This plant is one of the most popular medicinal meliaceous plants in traditional African remedies, used as a bitter tonic, folk and popular medicine against malaria, fever, mucous diarrhea, and venereal diseases as well as an anthelmintic and a taeniacide remedy. Its extracts and chemical constituents have been the subject of extensive phytochemical and pharmacological investigations since 1960s. Anti-inflammatory, anti-bacterial, anthelmintic, and antiplasmodial activities of plant extracts have been reported. Limonoids with anti-feeding, feeding deterrent and …

Characterization Of Dna Sequences That Confer Complement Resistance In Leishmania Chagasi, Rebecca R. Dahlin-Laborde, Eric J. Scolaro, Nathan M. Romine, Amanda Ramer-Tait, Soi Meng Lei, Jeffrey K. Beetham

Department of Food Science and Technology: Faculty Publications

Serial passage of axenically cultured Leishmania chagasi promastigotes results in a progressive diminution in resistance to complement-mediated lysis (CML), whereas high CML resistance is seen in infectious metacyclic promastigotes from the sandfly vector as well as metacyclic-like promastigotes within low-passage cultures at stationary growth phase. As we previously reported, in a screen seeking to identify novel genes involved in CML resistance: (1) a genomic cosmid library derived from DNA of CML-resistant L. chagasi promastigotes was transfected into highpassage (constitutively CML-sensitive) L. chagasi promastigotes; (2) transformants were screened for acquisition of CML-resistance; (3) multiple cosmid-transfectants exhibited partial CML resistance; and (4) …

Synthesis And Characterization Of Lactose-Amines With Respect To Oil-In-Water Emulsion Stability, Nidhi Garg

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fatty amines (hexadecyl-amine) can be esterified to lactose via Schiff-base formation at temperatures of 60° C. Extending the time of the reaction results in a darker colored product due to the Maillard reaction. Due to the amphiphilic properties of the lactose-amines, the emulsion stabilization characteristics were investigated.

In this study, synthesis of lactose-amines was done at four different heating and cooling cycles from 4 to 24 hours. Lactose-amines processed for 24 hours and 12 hours of constant heating and cooling cycles are named as 24H and 12H, respectively. Lactose-amines 4H and 8H were processed for 4 and 8 hours of …

Effect Of Processing And Formulation Conditions On Physicochemical Characteristics Of Food Emulsions, Megan Tippetts

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this research was to systematically study the effect of processing conditions on crystallization behavior and destabilization mechanisms of oil-in-water (o/w) emulsions. The effects of oil content (20 and 40 wt %); crystallization temperature (T_c = 10, 5, 0, -5, -10 °C); homogenization conditions, such as high shear (HS), very low pressure homogenization (VLPH), and high pressure homogenization (HPH); and cooling rate (0.2 and 30 °C/min) on both thermal behavior and destabilization mechanisms were analyzed. Docosahexaenoic acid (DHA) was added to VLPH emulsions and its effect on the physicochemical and oxidative stabilities and flavor was studied.

Emulsions …

Optimization Of Biodiesel Production From Crude Cottonseed Oil And Waste Vegetable Oil:Conventional And Ultrasonic Irradiation Methods, Xiaohu Fan

All Dissertations

Biodiesel, derived from the transesterification of vegetable oils or animal fats with simple alcohols, has attracted more and more attention recently. As a cleaner burning diesel alternative, biodiesel has many attractive features including: biodegradability, nontoxicity, renewability and low emission profiles.
Although cottonseed oil was the first commercial cooking oil in the U.S, it has progressively lost its market share to some vegetable oils that have larger production and less cost. However, regarding the active researches on biodiesel production from vegetable oils, there is a promising prospective for the cottonseed oil as a feedstock for biodiesel production, which may enhance the …

Cause And Prevention Of Liver Off-Flavor In Five Beef Chuck Muscles, Ranjeeta Wadhwani

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Liver off-flavor is a sporadic problem that limits the consumer acceptance of several beef chuck muscles, including the infraspinatus (flat iron steak). Residual blood hemoglobin is known to contribute to liver off-flavor development. This study was conducted to evaluate factors affecting development of liver off-flavor after cooking of beef chuck (shoulder) muscles. The study was conducted in three parts.

The objective of part 1 was to determine effects of muscle (infraspinatus, longissimus dorsi, serratus ventralis, supraspinatus, teres major) and processing (with or w/o carcass electrical stimulation) on residual blood hemoglobin content and total pigment content of raw muscle …

Mechanisms Of Nutrition Bar Hardening: Effect Of Hydrolyzed Whey Protein And Carbohydrate Source, Shaun P. Adams

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The influence of increasing hydrolyzed protein content on the microstructure and hardness of high protein nutrition bars was investigated to determine the mechanism of hardening during storage. Bars with various hydrolyzed protein levels were manufactured using differing ratios of 0, 25, 50, 75, 100% (wt. /wt.) of partially hydrolyzed whey protein isolate (HWPI) to an intact (non-hydrolyzed) whey protein isolate (WPI) which made up approximately 38% of the total bar composition. High fructose corn syrup (HFCS) (42%) and vegetable shortening (20%) constituted the rest of the ingredients. Accelerated aging was performed by storing bars at 32 ^oC for 36 …

Mathematical Models Of Zea Mays: Grain Yield And Aboveground Biomass Applied To Ear Flex And Within Row Spacing Variability, Todd Curtis Ballard

Masters Theses & Specialist Projects

Field studies were conducted during the summers of 2007 and 2008 at the Agricultural Research and Education Complex, Western Kentucky University, Warren County, KY and commercial production fields in Caldwell County, KY, Warrick County IN, and Vanderburgh County, IN. The goals of these studies were to further validate the Duncan grain yield model, the Russell aboveground biomass model, and to study the effect of inconsistent spacing within rows on Zea mays L. yield. Plant spacing other than uniform decreases grain yield and profitability. The population experiments conducted at the Warren County location were a randomized complete block design with three …

Melamine Contamination Of Infant Formula In China: The Causes, Food Safety Issues And Public Health Implications, Emmanuel Ohene Afoakwa

Professor Emmanuel Ohene Afoakwa

No abstract provided.

Emma Jo Williamson, Emma Jo Williamson, Institute Of Child Nutrition

Oral History Project (all interviews)

Emma Jo Williamson’s first job after college was in social work before making a career change and teaching Home Economics at Plaquemine High School in Iberville Parish for thirteen years. She then decided to go into school food service. She began her new career as an Assistant Director of the parish for two years before assuming the position of Director. Emma Jo is finally retired after twenty-seven years of serving the children of Iberville Parish.

Annette Dupard, Annette Dupard, Institute Of Child Nutrition

Oral History Project (all interviews)

Annette Dupard is a native of Vacherie, Louisiana. She is a graduate of Southern University and a retired Food Service Manager for the East Baton Rouge Parish Child Nutrition Programs.

Kris M. Chustz, Kris M. Chustz, Institute Of Child Nutrition

Oral History Project (all interviews)

Kris M. Chustz, a native of Baton Rouge, Louisiana, is a recently retired school food service professional, having worked as a Manager, Area Supervisor, and Computer Training Coordinator for the Eastern Baton Rouge Parish.

Mary Davis-Palms, Mary Davis-Palms, Institute Of Child Nutrition

Oral History Project (all interviews)

Mary Davis-Palms is an Area Supervisor with the East Baton Rough Parish School Nutrition Programs. A graduate of Louisiana State University, Mary has thirty-four years of service in child nutrition.

Gail Johnson, Gail Johnson, Institute Of Child Nutrition

Oral History Project (all interviews)

Gail Johnson was the longtime director of school food service in East Baton Rough Parish, Louisiana. She was also a very active member of the Advisory Committee for the National School Food Service Management Institute/Institute of Child Nutrition.

Nadine Mann, Nadine Mann, Institute Of Child Nutrition

Oral History Project (all interviews)

Louisiana native Dr. Nadine Mann is the Director of Operations for the East Baton Rouge Parish Child Nutrition Programs. Nadine holds Bachelor’s and Master’s degrees from Louisiana State University and a Doctorate from Texas Woman’s University in Foods and Nutrition Institution Administration. She has been with the district for thirty-one years.

Mary T. Wroten, Mary T. Wroten, Institute Of Child Nutrition

Oral History Project (all interviews)

Mary Wroten, a native of Mississippi, worked in the East Baton Rouge Parish Child Nutrition Programs for twenty years. Among her many accomplishments while there was to greatly improve the procurement procedures for the district. Mary’s legacy will continue in Dietetics when her daughter graduates in the same field in May 2009.

Sylvia Grabert, Sylvia Grabert, Institute Of Child Nutrition

Oral History Project (all interviews)

Sylvia Grabert is a retired Food Service Director for Iberia Parish in Louisiana. Before coming to Iberia Parish, Sylvia founded the first school food service program in St. James Parish. She holds degrees in both Education and Dietetics, and taught school for several years before going into school food service.

Understanding Consumer Preference For Functional Barley Tortillas Through Sensory, Demographic, And Behavioral Data, Ayako Toma, Maria Botero Omary, Kurt A. Rosentrater, Elizabeth A. Arndt, Naruemon Prasopsunwattana, Sutida Chongcham, Rolando A. Flores

Kurt A. Rosentrater

Consumption of whole grains as part of a health-promoting diet is encouraged among Americans due to beneficial nutrients and phytochemicals. The main objectives of this study were to investigate the effect of whole barley flour particle size on consumer acceptance of whole grain and soluble fiber-enriched tortillas; to examine the effect of demographic and behavioral data on consumer acceptance; and to establish relationships between consumer acceptance and survey results to identify market opportunities among particular groups of consumers. Four experimental tortillas and two representative commercial brands were tested by 95 untrained panelists using a 9-point hedonic scale for appearance, color, …

Local Chef Inspires Healthy And Economical Cooking -- In A Flash, Madeleine K. Charney

Madeleine K. Charney

Local chef, Leslie Cerier, offers thought-provoking workshops about eating whole foods.

Infant-Feeding Practices Of Low-Income Vietnamese American Women, Yashmi Mistry, Marjorie Freedman, Kathleen Sweeney, Clarie Hollenbeck

Faculty Publications

Healthy People 2010 breastfeeding goals include 50% exclusive breastfeeding at 6 months. In California, US, Santa Clara County Women, Infants, and Children (SCCWIC) data indicated Asian participants had low (5.6%) 6-month breastfeeding rates. To examine infant-feeding practices, Vietnamese breastfeeding peer counselors surveyed 133 Vietnamese SCCWIC participants (≥ 18 years old, nonpregnant, < 28 months postpartum) using a structured questionnaire regarding intentions, attitudes, and subjective norms toward breastfeeding. Results indicated that 75% initiated breastfeeding in the hospital (33% exclusively, 42% partially), and 25% exclusively formula fed. At survey time, 49% had terminated breastfeeding (average duration 4.4 months). Feeding intentions during pregnancy predicted feeding method used (P < .001). Most prenatal advice was from SCCWIC employees, friends, and doctors who supported breastfeeding. Most postnatal advice was from nurses who supported breastfeeding and bottle-feeding equally. Stronger control beliefs, peer counseling, and education were correlated with breastfeeding (P < .001). Improved postdelivery hospital advice may further increase breastfeeding initiation and duration.

Local Chef Inspires Healthy And Economical Cooking -- In A Flash, Madeleine K. Charney

University Libraries Publication Series

Local chef, Leslie Cerier, offers thought-provoking workshops about eating whole foods.

Commercial Evaluation Of A Continuous Micronutrient Fortification Process For Nixtamal Tortillas, Michael L. Dunn, Sergio O. Serna-Saldivar, Diana Sanchez-Hernandez, Robert W. Griffin

Faculty Publications

The corn tortilla plays an integral role in the Mexican diet and is an ideal vehicle for micronutrient fortification. Approximately 60% of corn tortillas in Mexico are produced from nixtamal, with the remainder prepared from masa flour. A process for continuous fortification of nixtamal tortillas was evaluated in two commercial mills in Mexico. A commercial powder dosifier was used to add micronutrient premix containing iron, zinc, folic acid, niacin, riboflavin, and thiamin to nixtamal (1 g/kg) as it was milled. After training and preliminary sampling, mills produced fortified tortillas unassisted for four weeks. Masa flow rates over a four-day period …

Reflections On Recycling, Pollution And History Or, How To Beat The High Cost Of Living, Richard B. Philp

Richard B. Philp

Lessons learned during the Great Depression and World War II may have to be relearned. The three Rs (reduce, reuse and recycle) were essential then to individual and national survival. A fourth R, repair, was practised as well. These lessons, if relearned, will stand us in good stead when dealing with the current economic climate as well as with problems of pollution and global warming.

The Food Processing Center News, Fall 2008

Department of Food Science and Technology: Public Access Records

CONTENTS:
FDST Students Star at IFT
Membrane Filtration Opportunities for the Food Industry
Food Safety Conference a Shared Success
A Message From Dr. Flores
Dr. Hanna “Most Cited” Author of 10 Years
Alumnus Bob Bidrowski
MS Graduate Carolina Leguizamon
Graduates of the B.S. Program
Graduates of the M.S. Program
Graduates of the Ph.D. Program
UNL AWARDS
Undergraduate Interns in Home Country
Accomplishments
Graduate Student Spotlight: Tim Anderson
New M.S. Students
New Ph.D. Students
From Culture-based Methods to DNA Sequencing of Entire Ecostyems: A Major Shift in the Paradigm of Diagnostic Microbiology
Faculty/Staff
Professor of Mucosal Immunology Joins FDST
Visiting Faculty …

Disseminated Leishmania Infantum Infection In Two Sibling Foxhounds Due To Possible Vertical Transmission, Katherine N. Gibson-Corley, Jesse M. Hostetter, Shannon J. Hostetter, Kathleen Mullin, Amanda Ramer-Tait, Paola M. Boggiatto, Christine A. Petersen

Department of Food Science and Technology: Faculty Publications

Two sibling foxhounds born to a Leishmania seropositive bitch were presented after testing seropositive for Leishmania. Leishmania infantum infection was detected via histopathology, culture, and quantitative polymerase chain reaction (q-PCR). This is the first report of natural infection with Leishmania infantum with the possibility for vertical transmission in North America.

Infection disséminée à Leishmania infantum chez deux chiots Fox hound d’une même portée reliée possiblement à une transmission verticale. Deux chiots Fox hound d’une même portée nés d’une mère séropositive à Leishmania ont été présentés après un contrôle sérologique positif. Une infection à Leishmania infantum a été détectée par …