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Full-Text Articles in Life Sciences

Changes In Plasma Melanocyte Stimulating Hormone, Acth, Prolactin, Gh, Lh, Fsh, And Thyroid Stimulating Hormone In Response To Injection Of Sulpiride, Thyrotropin Releasing Hormone, Or Vehicle In Insulin Sensitive And Insensitive Mares, Nicole Arana Valencia Jan 2013

Changes In Plasma Melanocyte Stimulating Hormone, Acth, Prolactin, Gh, Lh, Fsh, And Thyroid Stimulating Hormone In Response To Injection Of Sulpiride, Thyrotropin Releasing Hormone, Or Vehicle In Insulin Sensitive And Insensitive Mares, Nicole Arana Valencia

LSU Master's Theses

Six insulin sensitive and six insensitive mares were used in a replicated 3 x 3 Latin square design to determine the pituitary hormonal responses (compared to vehicle) to sulpiride and thyrotropin-releasing hormone (TRH), two compounds commonly used to diagnose pituitary pars intermedia dysfunction (PPID) in horses. Mares were classified as insulin sensitive or insensitive by their previous glucose responses to direct injection of human recombinant insulin. Treatment days were February 25 and March 10 and 24, 2012. Treatments were sulpiride (racemic mixture, 0.01 mg/kg BW), TRH (0.002 mg/kg BW), and vehicle (saline, 0.01 mL/kg ...


A Linear Programming Model And Partial Budget Analysis To Optimize Management Strategies Of Western Flower Thrips In Greenhouse Impatiens Production, Xiaohua Yue Jan 2013

A Linear Programming Model And Partial Budget Analysis To Optimize Management Strategies Of Western Flower Thrips In Greenhouse Impatiens Production, Xiaohua Yue

LSU Master's Theses

The research problem of this thesis was to compare strategies and costs of protecting impatiens in greenhouse culture from western flower thrips that would provide a plant of acceptable quality to the market and would address the issue of development of resistance to commonly used pesticides by evaluating biopesticides. Partial budgets based on alternative strategies were identified. Six control strategies were identified from a combination of commercial growers, research experts and biopesticide recommendations from product distributors. The research-recommended strategy 6 had the highest total production cost ($197.44), while one of the grower strategies based on conventional pesticides had the ...


Influence Of Soil Nutrients On Reproduction And Pathogenicity Of Rotylenchulus Reniformis On Cotton, Herath Mudiyanselage Manjula Thaminda Kularathna Jan 2013

Influence Of Soil Nutrients On Reproduction And Pathogenicity Of Rotylenchulus Reniformis On Cotton, Herath Mudiyanselage Manjula Thaminda Kularathna

LSU Master's Theses

Among the variety of pathogens of cotton (Gossypium hirsutum), nematodes play a major role in reducing yield. Across the U.S. cotton belt, millions of dollars are lost annually due to nematode infestation. In the Mid-South and Southeast United States, root-knot nematode (Meloidogyne incognita) and reniform nematode (Rotylenchulus reniformis) are responsible for the highest percentage of damage. Crop rotation and nematicides are currently the most commonly used management strategies for nematode management. Soil fertility, which has a direct effect on plant growth, is also known to influence disease severity. Therefore, soil fertility would be an additional factor to consider for ...


Influence Of "Added" Lactose On Probiotic Properties Of Yogurt Culture Bacteria And Yogurt Characteristics, Behannis Jasmin Mena-Chalas Jan 2013

Influence Of "Added" Lactose On Probiotic Properties Of Yogurt Culture Bacteria And Yogurt Characteristics, Behannis Jasmin Mena-Chalas

LSU Master's Theses

Lactose sugar is a source of energy for Lactic Acid Bacteria (LAB) in dairy fermented products. Enrichment of yogurt with lactose addition may increase growth and viability of the yogurt starter culture (Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus) and enhance yogurt physico-chemical and sensory attributes. The objectives of this study were: to determine the influence of added lactose on (1) acid and bile tolerance of yogurt starter culture Streptococcus thermophilus ST-M5 and Lactobacillus bulgaricus LB-12, (2) the final lactose content of yogurt during its shelf life, (3) the physico-chemical characteristics of yogurt during shelf life, (4) the growth of ...


Perceptions Of The Motivational Climate And Gender Class Structure In Physical Education, Lauren E. Delgado Jan 2013

Perceptions Of The Motivational Climate And Gender Class Structure In Physical Education, Lauren E. Delgado

LSU Master's Theses

Many children do not engage in the recommended levels of physical activity, and they ten to become even less active during adolescence. Girls are less active then boys, and it is important to explore ways that physical education teachers can foster girls’ motivation to be more physically active. The specific research questions for this study were: (a) How does gender class structure affect girls’ perception of the motivational climate?; and (b) How do girls’ views of the motivation climate in different gender class structures relate to intentions to participate in physical activity outside of physical education? A phenomenological framework guided ...


Effects Of Different Weaning Management Strategies On Preconditioning Performance, Haptoglobin Serum Levels, Feedlot Morbidity, And Carcass Characteristics, Jake Everitt Anderson Jan 2013

Effects Of Different Weaning Management Strategies On Preconditioning Performance, Haptoglobin Serum Levels, Feedlot Morbidity, And Carcass Characteristics, Jake Everitt Anderson

LSU Master's Theses

Weaning, one of the first major stressors encountered by the calf, has a negative effect on the immune system and increases the likelihood of infection of novel pathogens such as those that cause bovine respiratory disease. Fenceline contact at weaning has been shown to reduce the stress on the calf during the time following maternal separation. Preconditioning programs have been shown to reduce feedlot morbidity and mortality. Combining these two management practices could reduce the length of time calves need to be held in a preconditioning program. A multi-year study was conducted to evaluate if fenceline weaning will allow for ...


A Genomic And Quantitative Evaluation Of Modern Charolais Sired Calves Versus Multigenerational Angus Sired Calves For Growth And Carcass Quality And Compostion Traits, Jennifer Lynn Bailey Jan 2013

A Genomic And Quantitative Evaluation Of Modern Charolais Sired Calves Versus Multigenerational Angus Sired Calves For Growth And Carcass Quality And Compostion Traits, Jennifer Lynn Bailey

LSU Master's Theses

The objective of this study is to evaluate the association of single nucleotide polymorphisms with growth, performance, and carcass quality and composition characteristics in a population of cattle consisting of multigenerational Angus sired calves and modern characteristic Charolais sired calves. A total of 132 calves were evaluated. Due to a limited sample population statistical difference was set at p ˂ 0.05 and statistical trends were set at p ˂ 0.1. Mean birth weights were significantly higher for Charolais sired calves as compared to Angus sired calves. Significant differences were observed between the two breed types for mean weaning weights with ...


Effects Of Caste On The Constitutive And Induced Expression Of Genes Associated With Immunity And Detoxification In Formosan Subterranean Termites, Dawn M. Simms Jan 2013

Effects Of Caste On The Constitutive And Induced Expression Of Genes Associated With Immunity And Detoxification In Formosan Subterranean Termites, Dawn M. Simms

LSU Master's Theses

Simms, Dawn M., B.S., Louisiana State University, 1997 Master of Science, Spring Commencement, 2013 Major: Entomology Effects of Caste on the Constitutive and Induced Expression of Genes Associated with Immunity and Detoxification in Formosan Subterranean Termites Thesis directed by Associate Professor Claudia Husseneder Pages in thesis, 74. Words in abstract, 268. ABSTRACT Formosan subterranean termites (FSTs) live in dense populations and nest conditions that are conducive to microbial growth. Furthermore, termites are exposed to potential toxic substances in the soil and in their lignocellulose diet. These characteristics, in combination with the specialized caste system of FSTs, make this termite ...


Differential Effect Of 14 Free Fatty Acids In The Expression Of Inflammation Biomarkers On Human Coronary Arterial Cells, Adriana Soto Rodriguez Gil Jan 2013

Differential Effect Of 14 Free Fatty Acids In The Expression Of Inflammation Biomarkers On Human Coronary Arterial Cells, Adriana Soto Rodriguez Gil

LSU Master's Theses

Cardiovascular disease is the leading cause of death in the US, and circulating free fatty acids (FFAs) are known risk factors associated with cardiovascular inflammation. The influence of 14 dietary FFAs (including saturated, mono-, poly-unsaturated and trans), on the expression of inflammatory markers in human coronary arterial smooth muscle (HACSM) and endothelial (HCAEC) cells using a cell culture model was investigated. HACSM and HCAEC cell cultures were incubated with 200 μM of each FFA for 8 or 24 h respectively at 37 °C in a 5% CO2 humidified incubator. Inflammatory biomarkers were assessed by ELISA or Western Blot in the ...


A Phylogenetic Analysis Of Species Diversity, Specificity, And Distribution Of Mycodiplosis On Rust Fungi, Donald Jay Nelsen Jan 2013

A Phylogenetic Analysis Of Species Diversity, Specificity, And Distribution Of Mycodiplosis On Rust Fungi, Donald Jay Nelsen

LSU Master's Theses

There are more than 7800 species of Pucciniales (rust fungi) described. Aeciospores and urediniospores of rust fungi are a food source for the larval stage of members of the fly genus Mycodiplosis, hence these could be of interest as potential biological control agents. Currently, Mycodiplosis contains 49 described species based on adult male morphology. A survey of 1,350 rust-infected plants from 44 countries was recently conducted to assess the occurrence of Mycodiplosis fly larvae across a broad spectrum of Pucciniales. Larvae were found on 261 collections from 25 countries. Statistical analyses explored the distribution of larvae in relation to ...


Changes In Anthocyanins Throughout The Processing Of Muscadine (Vitis Rotundifolia) Wine, Luke Aaron Mumphrey Jan 2013

Changes In Anthocyanins Throughout The Processing Of Muscadine (Vitis Rotundifolia) Wine, Luke Aaron Mumphrey

LSU Master's Theses

Grapes from Vitis rotundifolia ( Muscadine) are rich sources of different phenolic compounds, (e.g. ellagic acid, myricetin, quercetin, kaempferol, resveratrol, etc.) which are purported to provide health benefits, possibly as antioxidants. Anthocyanins, a pigmented subgroup of the flavonoid group, are responsible for intense pigmentation in the grapes. Maximizing anthocyanins in products is a priority for color, and preservation of potential health benefits. This research focused on measuring changes in the anthocyanins as wine is produced commercially from a single crop of Vitis rotundifolia var. Ison grapes. Samples were taken at points throughout the vintification process, and phenolics and anthocyanins were ...


Potential Roles Of Wrky Transcription Factors In Resistance To Aspergillus Flavus Colonization Of Immature Maize Kernels, Jake Clayton Fountain Jan 2013

Potential Roles Of Wrky Transcription Factors In Resistance To Aspergillus Flavus Colonization Of Immature Maize Kernels, Jake Clayton Fountain

LSU Master's Theses

The infection and colonization of maize (Zea mays L.) by the necrotrophic fungal pathogen Aspergillus flavus results in contamination of kernel tissues with carcinogenic mycotoxins known as aflatoxins, resulting in severe economic losses as well as negative effects on human and animal health. Resistance to A. flavus is mediated by both inducible and constitutively expressed defense proteins; however the mechanism regulating the expression of these defenses is poorly understood. This study examined the potential roles of six maize WRKY transcription factors, ZmWRKY19, ZmWRKY21, ZmWRKY53, ZmWRKY53.1, ZmWRKY67, and ZmWRKY68, in regulating defense responses against ...


The Development Of Gluten-Free Milk-Free French Bread, Annette Camnetar Bentley Jan 2013

The Development Of Gluten-Free Milk-Free French Bread, Annette Camnetar Bentley

LSU Master's Theses

Approximately 6% of children and approximately 4% of adults in the western countries including the United States (US) have food allergies. Milk allergy is reported to be one of the most common food allergies affecting as high as 7% in the US. Celiac disease affects approximately 1% of the US population. Such individuals are required to maintain diets restricting milk and gluten. Autism is estimated to affect over 673,000 in the US. A milk-free gluten-free diet is recommended for autism. The gluten grains identified are wheat, oats, barley and rye and any by-products or cross-bred grains of these products ...


Oxygen Consumption During Exercise: The Role Of Venous Occlusion, Tiffany Noel Saltzman Jan 2013

Oxygen Consumption During Exercise: The Role Of Venous Occlusion, Tiffany Noel Saltzman

LSU Master's Theses

Abstract Oxygen consumption during exercise is typically used to advance performance, determine fitness level, and make clinical diagnoses. The rate at which VO2 adjusts to and recovers from (i.e. on- and off- kinetics) a bout of exercise is typically associated with certain metabolic processes such as stores of PCr, ATP, replenishing myoglobin, hemoglobin, and removing metabolic waste. The ability of an individual to utilize these processes can determine the speed at which oxygen consumption rises and falls, and thus is associated with the health of the individual (i.e. faster=fitter; slower=unhealthy). The use of circulatory occlusion training ...


The Use Of Duddingtonia Flagrans For Gastrointestinal Parasitic Nematode Control In Feces Of Exotic Artiodactylids At Disney's Animal Kingdom®, Jenna Terry Jan 2013

The Use Of Duddingtonia Flagrans For Gastrointestinal Parasitic Nematode Control In Feces Of Exotic Artiodactylids At Disney's Animal Kingdom®, Jenna Terry

LSU Master's Theses

Gastrointestinal nematodes (GIN) are parasites of major concern for domestic and exotic ruminant species around the world. In the past, zoological facilities used anthelmintics as their primary control method. Challenges in accurate dosing and administration of anthelmintics to exotic hoofstock contributed to the development of resistant nematode populations in zoological settings. The historic dependency on anthelmintics to control GIN populations is no longer an option. Biological alternatives are urgently needed, in both exotic and domestic ruminants, in the war against resistance. One such alternative is the use of the nematophagous fungus, Duddingtonia flagrans. Three independent studies were conducted: A nine ...


Insulin Secretagogue Activity Of Ellagic Acid-Rich Muscadine (Vitis Rotundifolia) And Indian Gooseberry (Emblica Officinalis) Extracts On Pancreatic Beta Cells, Srikanth Earpina Jan 2013

Insulin Secretagogue Activity Of Ellagic Acid-Rich Muscadine (Vitis Rotundifolia) And Indian Gooseberry (Emblica Officinalis) Extracts On Pancreatic Beta Cells, Srikanth Earpina

LSU Master's Theses

Diabetes is an inflammatory disease associated with hyperglycemia. Chronic exposure of pancreatic â-cells to glucolipotoxicity stimulates a low-grade inflammation associated with the release of pro-inflammatory cytokines such as interleukin-1â (IL-1â). Increased levels of IL-1â can initially lead to decreased insulin secretion and finally â-cell death. Ellagic acid and quercetin have been reported to be anti-inflammatory in several studies. Vitis rotundifolia (muscadine) or Emblica officinalis (amla) are good sources of ellagic acid and quercetin. Ellagic acid or quercetin is bioavailable as is or are metabolized into bioavailable urolithins or isorhamnetin, respectively. The objective of this study was to evaluate the effect ...


Assessing The Efficiency Of Alternative Best Management Practices To Reduce Nonpoint Source Pollution In The Broiler Production Region Of Louisiana, Bryan Gottshall Jan 2013

Assessing The Efficiency Of Alternative Best Management Practices To Reduce Nonpoint Source Pollution In The Broiler Production Region Of Louisiana, Bryan Gottshall

LSU Master's Theses

The Louisiana broiler production region is located in North Central and Northwestern Louisiana. The region consists of twelve parishes in Northwestern and North Central Louisiana. The broiler production region is a significant contributor of nonpoint source (NPS) pollution to nearby waterways. This pollution is a consequence of sediment, nitrogen and phosphorus runoff caused by agricultural production. NPS pollution is difficult to mitigate due to uncertainties in its point of origin as well as a host of other factors ranging from rainfall to topographical parameters. Best Management Practices (BMPS) have been shown to be a reliable method for reducing nonpoint source ...


Evaluation Of 54 Years Of Louisiana Bull Testing, And Snp Affecting Growth And Performance Of Yearling Bulls On A Forage Performance Bull Test, Tabitha Howard Jan 2013

Evaluation Of 54 Years Of Louisiana Bull Testing, And Snp Affecting Growth And Performance Of Yearling Bulls On A Forage Performance Bull Test, Tabitha Howard

LSU Master's Theses

The first objective of these two studies was to evaluate genetic trends for bulls that have comprised the LSU AgCenter Dean Lee performance bull test for the past 55 years. Data included birth weight (BW), initial weight, 112-day weight, average daily gain (ADG), adjusted yearling weight, and scrotal circumference (SC), on 7,488 yearling bulls of 34 breeds on 112d of test for the last 55 years. The top 4 represented bull breeds with greater than 500 animals (Angus, Charolais, Hereford, and Simmental) were included in this analysis. Analyses revealed that growth traits for all bulls regardless of breed demonstrated ...


Effects Of Assorted Coating Materials And Room Temperature Storage On Internal Quality And Oxidative Stability Of Shell Eggs, Jinjuta Jirawatjunya Jan 2013

Effects Of Assorted Coating Materials And Room Temperature Storage On Internal Quality And Oxidative Stability Of Shell Eggs, Jinjuta Jirawatjunya

LSU Master's Theses

Surface coating is an effective/inexpensive method to preserve internal quality and minimize weight loss of shell eggs during storage without refrigeration. No research has been done to evaluate effects of coating on oxidative stability of cooked eggs. In the first study, soybean oil (SO) as a coating material was evaluated for its effects on internal quality and flavor volatile compounds of eggs throughout 5-weeks of storage at 25¢XC. Haugh unit (HU) and yolk index (YI) values decreased whereas weight loss increased during storage. After 5-weeks, SO-coated eggs had consistently higher HU (67.72 vs. 48.45) and YI ...


An Analysis Of Consumer Preferences For Grass-Fed Versus Grain-Fed Beef, Bo Lin Jan 2013

An Analysis Of Consumer Preferences For Grass-Fed Versus Grain-Fed Beef, Bo Lin

LSU Master's Theses

As a consequence of the growing concerns about human health and the environment, consumers are becoming more interested in grass-fed beef than conventional grain-fed beef. Therefore, the study of consumers’ preference towards grass-fed versus grain-fed beef steak is the focus of research. In this paper, 2,000 respondents who indicate they have eaten grass fed beef in the past years and 2,000 respondents that complete a nationally representative sample is the general population. Conjoint analysis is utilized to analyze the preference of consumers. Participants are presented ten hypothetical beef steaks to rate. All steaks are identical excluding their product ...


Yogurt Cultured Milk Powder As A Substitute For Yogurt Powder, Lijie Song Jan 2013

Yogurt Cultured Milk Powder As A Substitute For Yogurt Powder, Lijie Song

LSU Master's Theses

Commercial yogurt powder has to go through drying process which kills the yogurt culture, so the health benefit of the yogurt culture bacteria are lost. Also, upon reconstitution commercial yogurt powder does not taste like yogurt, it is sour and off flavored. The hypothesis of this study was that yogurt cultured milk powder would have better culture bacterial counts, better physico-chemical and sensory characteristics than commercial yogurt powder currently available. Commercial yogurt powder (CYP) was the control and yogurt cultured milk powder (YCMP) was the treatment. Freeze-dried yogurt starter culture (Lactobacillus bulgaricus and Streptococcus thermophilus at ratio 1:1) was ...


Factors Affecting Basal And Post-Exercise Prolactin Secretion In Horses, Lisa C. Digiovanni Jan 2013

Factors Affecting Basal And Post-Exercise Prolactin Secretion In Horses, Lisa C. Digiovanni

LSU Master's Theses

There has been thorough documentation to support the role of dopamine in the control of prolactin production and secretion in various mammalian species, including the horse. However, there is evidence that other factors are involved in prolactin secretion. Seven experiments were conducted to assess factors that potentially might affect prolactin secretion in the horse. The first two experiments were conducted (separately) to test whether arginine vasopressin (AVP) or vasoactive intestinal polypeptide (VIP) affected prolactin secretion. In each experiment, AVP or VIP was administered intravenously and blood samples were collected to determine the effect on prolactin secretion. Neither peptide produced any ...


Response Of Bovine Fetal Fibroblasts To Pluripotency Induction With In Vitro Transcribed Mrna, Tricia Adams Jan 2013

Response Of Bovine Fetal Fibroblasts To Pluripotency Induction With In Vitro Transcribed Mrna, Tricia Adams

LSU Master's Theses

Numerous studies have contributed to the induction of pluripotency in an abundance of cell types; however, transfection techniques and efficiency have yielded undesirable outcomes. Traditionally, the use of viral vectors as a mode of transmission has proven to be efficient in the induction of pluripotency transcription factors in mammalian cells. The increasing concern is random insertion of viral components within the host genome due to the viral mode of replication. The delivery of messenger RNA by cationic lipid delivery vehicles circumvents the viral concerns and provides an efficient and safe mode of reprogramming. Synthetic mRNA can be used to initiate ...


Effects Of Meal Timing On Growth Hormones, Ghrelin, And Insulin Sensitivity In Male Holstein Calves, Erica Lynn Chartier Jan 2013

Effects Of Meal Timing On Growth Hormones, Ghrelin, And Insulin Sensitivity In Male Holstein Calves, Erica Lynn Chartier

LSU Master's Theses

Eighteen neonatal Holstein bull calves (38.85 ± 4.71 kg) were assigned to one of two treatments at birth to determine the effect of feeding time on growth, nutrient intake, metabolic hormone secretion, and energy metabolism. Regularly fed calves (n = 9) were fed MR daily at 0630 h, and irregularly fed calves (n = 9) at 1030, 0800, 0630, 0830, 0530, 0930, and 0730 Monday through Sunday. Body weights were measured weekly from birth to 9 weeks. Water intake, fecal scores, and starter intake were measured daily. Serial blood collections were conducted at 2, 4, 6, and 8 weeks for ghrelin ...


Determination Of Cane Berry Pomaces Benefits Through In Vitro Model For Human Colonic Fermentation, M'Famara Goita Jan 2013

Determination Of Cane Berry Pomaces Benefits Through In Vitro Model For Human Colonic Fermentation, M'Famara Goita

LSU Master's Theses

Cane berry pomaces have traditionally been considered waste products with little or no value. Yet these pomaces’ high levels of phenolic compounds such as anthocyanins, is a good source of dietary fiber. Because the pomaces are low in sugar and rich in fiber and dietary antioxidants, they have potential as food ingredients for the health food market. The pomace delivers health benefits associated with high fiber and the antioxidant polyphenolic compounds associated with whole fruits and juices without the high sugar content. Some dietary fibers are substrates for anaerobic fermentation by the microbiome in the lower gastrointestinal (GI) tract. The ...


Sweetpotato Storage Root Rots: Flooding-Associated Bacterial Soft Rot Caused By Clostridium Spp. And Infection By Fungal End Rot Pathogens Prior To Harvest, Washington Luis Da Silva Jan 2013

Sweetpotato Storage Root Rots: Flooding-Associated Bacterial Soft Rot Caused By Clostridium Spp. And Infection By Fungal End Rot Pathogens Prior To Harvest, Washington Luis Da Silva

LSU Master's Theses

Sweetpotato production in the southern United States is being threatened by a soft rot that develops in storage roots when fields are flooded and by an important post-harvest disease caused mainly by the fungi Fusarium solani and Macrophomina phaseolina. To identify the pathogens responsible for development of the soft rot, samples were collected from storage roots with soft rot from intentionally flooded fields and decayed tissue was streaked on plates of nutrient dextrose agar plus 0.05% cysteine and incubated anaerobically. Two distinct groups of Gram positive strict anaerobic bacteria were re-isolated from rotting storage roots. Endospores were observed in ...


A Survey Of Chemical Elicitors And Their Effectiveness As Promoters Of Plant Defense Against Herbivory By Spodoptera Frugiperda (Smith) (Lepidoptera: Noctuidae), John Gordy Jan 2013

A Survey Of Chemical Elicitors And Their Effectiveness As Promoters Of Plant Defense Against Herbivory By Spodoptera Frugiperda (Smith) (Lepidoptera: Noctuidae), John Gordy

LSU Master's Theses

Insect herbivores can induce a range of plant defenses. Signal pathways can be activated that result in the production of secondary metabolites. Many of these compounds can reduce insect fitness, deter feeding, and attract beneficial insects. Additionally, organic and inorganic chemicals applied as a foliar spray or soil drench can activate these plant responses. Azelaic acid, benzothiadiazole (BTH), gibberellic acid (GA3), harpin, and jasmonic acid (JA) are thought to mediate plant response to pathogens and herbivores. The effects of these elicitors on the induction of plant defenses were determined by measuring the weight gain of fall armyworm (FAW), Spodoptera frugiperda ...


Effect Of Bitterness Blockers And Salt Substitutes On The Quality Of Low Sodium White Cheddar Cheese, Kennet Mariano Carabante Jan 2013

Effect Of Bitterness Blockers And Salt Substitutes On The Quality Of Low Sodium White Cheddar Cheese, Kennet Mariano Carabante

LSU Master's Theses

Reducing added salt in processed foods is one of the major challenges facing food industry worldwide. Salt (NaCl) replacement in a Cheddar cheese has been successfully achieved up to 25%, which qualifies it as “reduced sodium”. However, a low sodium cheddar cheese (less than 140 mg Na/ 50 g cheese) requires at least 50% of salt reduction. Bitterness is one obstacle for development of an acceptable low sodium cheddar cheese. In this study, sensory optimization of low sodium white cheddar cheese was performed. A 3-component mixture design was used: NaCl (30-60%), KCl (45-65%) and glycine (5-10%). A fixed level of ...


The Influence Of Commerce Silt Loam Soil Texture On Reproduction And Pathogenicity Of Rotylenchulus Reniformis On Cotton, Déborah Magalhães Xavier Jan 2013

The Influence Of Commerce Silt Loam Soil Texture On Reproduction And Pathogenicity Of Rotylenchulus Reniformis On Cotton, Déborah Magalhães Xavier

LSU Master's Theses

Greenhouse and microplot studies were conducted to evaluate the influence of soil texture on reproduction and pathogenicity of Rotylenchulus reniformis (reniform nematode) on cotton. A 45 day duration greenhouse experiment confirmed the pathogenicity of an isolate of R. reniformis from Avoyelles Parish on Stoneville LA887 cotton. A series of greenhouse experiments were conducted with three geographic isolates of R. reniformis (identified as Avoyelles, Evangeline, and Rapides to indicate the Parish of origin) on Stoneville LA887, Stoneville 5288B2F, and Phytogen 375WF cotton growing in soils with varying textures for 60 days. Soil types with sand, silt, and clay contents ranging from ...


Treatments To Reduce The Risk Of Vibrio Species In Vitro And In Shucked Oysters, Ronson Renard Scott Jan 2013

Treatments To Reduce The Risk Of Vibrio Species In Vitro And In Shucked Oysters, Ronson Renard Scott

LSU Master's Theses

"Vibrio parahaemolyticus" (Vp) and "Vibrio vulnificus" (Vv) are halophilic bacteria naturally occurring in estuarine environments that may concentrate in filter feeding shellfish. Consumption of raw or under-cooked seafood contaminated with Vp or Vv may lead to the development of acute gastroenteritis or fatal septicemia in at-risk individuals, respectively. This research encompassed two separate but related projects: evaluation of a low temperature pasteurization (LTP) technique for the reduction of Vp and Vv in commercial quantities of shucked oysters (SO) and the investigation of the efficacy of a citrus fruit extract, BIOSECUR® F440D in reducing/eliminating Vv in vitro. Commercially available SO ...