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Articles 1 - 12 of 12
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Edible Insects As A Source Of Food Allergens, Lee Palmer
Edible Insects As A Source Of Food Allergens, Lee Palmer
Department of Food Science and Technology: Dissertations, Theses, and Student Research
Increasing global population increasingly limited by resources has spurred interest in novel food sources. Insects may be an alternative food source in the near future, but consideration of insects as a food requires scrutiny due to risk of allergens. Currently, the insect Dactylopius coccus, known as cochineal, is used to produce carmine, a natural red pigment used in food, which has caused allergic reactions. This study investigated allergens of cochineal focusing on purification from the pigment. Mass spectrometry identified a previously described major allergen of cochineal and a tropomyosin, although further work is required.
Tropomyosin is a major cross-reactive allergen …
Risk Assessment And Research Synthesis Methodologies In Food Safety: Two Effective Tools To Provide Scientific Evidence Into The Decision Making Process., Juan E. Ortuzar
Risk Assessment And Research Synthesis Methodologies In Food Safety: Two Effective Tools To Provide Scientific Evidence Into The Decision Making Process., Juan E. Ortuzar
Department of Food Science and Technology: Dissertations, Theses, and Student Research
The food supply chain is a complex and diverse system. Some food products need minimum processing to reach the consumers, while others involve several different processes, countries and suppliers, can take several months to be on the table of the end consumer. Regarding food safety, the public health of consumers is at stake and the consequences of outbreaks could prove disastrous. This has been recognized as a matter of global importance for the food industry and authorities around the world since several efforts to improve quality, safety and trade of food have arisen since the early 1960s. The birth of …
Formation Of Bioactive-Carrier Hollow Solid Lipid Micro- And Nanoparticles, Junsi Yang
Formation Of Bioactive-Carrier Hollow Solid Lipid Micro- And Nanoparticles, Junsi Yang
Department of Food Science and Technology: Dissertations, Theses, and Student Research
In recent years, bioactive lipids (e.g., carotenoids, phytosterols, and tocopherols) have attracted a lot of interest to develop health and wellness promoting foods and beverages. However, bioactive lipids are water-insoluble and degrade easily during processing and storage, making their addition into foods and beverages challenging.
The main objective of this thesis was to develop a novel green process to form bioactive lipid-carrier hollow solid lipid micro- and nanoparticles using supercritical carbon dioxide (SC-CO2). Specific objectives were to develop hollow solid lipid micro- and nanoparticles using SC-CO2 technology, and to load the hollow solid lipid micro- and nanoparticles …
Studies On Asparagine In Nebraska Wheat And Other Grains, Sviatoslav Navrotskyi
Studies On Asparagine In Nebraska Wheat And Other Grains, Sviatoslav Navrotskyi
Department of Food Science and Technology: Dissertations, Theses, and Student Research
Understanding of the contribution of environmental and genetic factors on the chemical composition of different grains is a critical issue in the area of food safety of cereal products. Numerous studies have reported that asparagine can form acrylamide, a toxic and potentially carcinogenic precursor compound, during a Milliard reaction. Therefore, studying the environmental and genetic effects that contribute to accumulation of asparagine in wheat and proso millet lines, which were grown in the state of Nebraska, is important for supporting breeding programs aimed at providing safer crops for consumers. In the realm of reduction of the asparagine concentration in wheat-based …
Development Of A Sandwich Enzyme-Linked Immunosorbent Assay (Elisa) For Detection Of Macadamia Nut Residues In Processed Food Products, Charlene Gan
Department of Food Science and Technology: Dissertations, Theses, and Student Research
Macadamia nut is considered a priority food allergen and undeclared macadamia nut residues pose a potential food safety risk to individuals with macadamia nut allergies. To date, there are a limited number of immunochemical methods that are available for detection of processed macadamia nut residues. Therefore, the aim of this study was to develop a reliable and robust sandwich ELISA for detection of macadamia nut residues. Raw and roasted macadamia nuts were used for immunization in three different species of animals (sheep, goat, and rabbits). Macadamia nut specific IgG antibodies produced by each animal were tested for their specificity and …
Matrix Effects On The Detection Of Milk And Peanut Residues By Enzyme-Linked Immunosorbent Assays (Elisa), Abigail S. Burrows
Matrix Effects On The Detection Of Milk And Peanut Residues By Enzyme-Linked Immunosorbent Assays (Elisa), Abigail S. Burrows
Department of Food Science and Technology: Dissertations, Theses, and Student Research
Food matrices are complex systems of lipids, carbohydrates, and proteins in which interactions between matrix components and allergenic proteins are known to have negative effects on the recovery of allergens when analyzed by ELISA. The purpose of this study was to first evaluate the recovery of milk and peanut residues from multiple food matrices and mixes and to secondly evaluate the use of a modified extraction protocol, sequential extractions, on the recovery of milk and peanut allergens.
Pastry dough matrices and pastry dough mixes incurred with milk were prepared at varying concentrations of flour and evaluated for recovery of NFDM. …
From Milpas To The Market: A Study On The Use Of Metal Silos For Safer And Better Storage Of Guatemalan Maize, José Rodrigo Mendoza
From Milpas To The Market: A Study On The Use Of Metal Silos For Safer And Better Storage Of Guatemalan Maize, José Rodrigo Mendoza
Department of Food Science and Technology: Dissertations, Theses, and Student Research
This project aimed to implement the use of metal silos to improve quality and safety of maize consumed by inhabitants of the highlands of Guatemala. This manuscript includes a literature review of the maize production chain in Guatemala, a survey about agricultural practices used in the region of study, as well as a characterization of the analyzed maize regarding its mycoflora, nutritional composition, and insect infestation. To better understand the current situation regarding agricultural practices and maize consumption, a survey was carried out. Sample consisted of 280 families representing 14 rural communities distributed in the townships of Todos Santos and …
Feasibility, Safety, Economic And Environmental Implications Of Whey-Recovered Water For Cleaning-In Place Systems: A Case Study On Water Conservation For The Dairy Industry, Yulie E. Meneses-GonzáLez
Feasibility, Safety, Economic And Environmental Implications Of Whey-Recovered Water For Cleaning-In Place Systems: A Case Study On Water Conservation For The Dairy Industry, Yulie E. Meneses-GonzáLez
Department of Food Science and Technology: Dissertations, Theses, and Student Research
Several countries around the world are facing the challenge of producing food with limited water resources for a growing population. This reality is forcing all sectors involved in the food supply chain to look for water conservation strategies that contribute to assure global food security. Besides water consumption, the food industry has to deal with wastewater generation; therefore, water reconditioning and reuse is an attractive solution to address both issues. The goal of this research was to demonstrate that high quality water can be recovered from whey, a by-product of the cheese making process, and reused in cleaning-in place (CIP) …
Evaluation Of Qualitative Food Allergen Detection Methods And Cleaning Validation Approaches, Rachel C. Courtney
Evaluation Of Qualitative Food Allergen Detection Methods And Cleaning Validation Approaches, Rachel C. Courtney
Department of Food Science and Technology: Dissertations, Theses, and Student Research
Allergen control plans are increasingly used by the food industry to prevent allergen cross-contact and validation of these plans involves methods to detect allergen protein residues. A commonly used rapid allergen detection method is lateral flow devices, although research about their validation is lacking. The objective of this research was to investigate lateral flow devices, their specificity and sensitivity to milk proteins and milk-derived ingredients, swabbing conditions, and applications in cleaning validation.
Several lateral flow devices advertised to detect total milk did not detect whey proteins or whey-derived ingredients. The overload level of the kits was highly variable (ranging from …
Improving The Utilization Of Dry Edible Beans In A Ready-To-Eat Snack Product By Extrusion Cooking, Franklin Sumargo
Improving The Utilization Of Dry Edible Beans In A Ready-To-Eat Snack Product By Extrusion Cooking, Franklin Sumargo
Department of Food Science and Technology: Dissertations, Theses, and Student Research
The growing snacking habit and steady increasing demand for healthy snacks have drastically changed the ready-to-eat snack market in recent years. While the current healthy, ready-to-eat snack products are still dominated by whole cereal grains, legumes, especially dry edible beans, have a high potential to emerge in nutritional, novel food. Dry edible beans (Phaseolus Vulgaris L) are not only economically valuable but also nutritionally important, since they are important sources of proteins, B vitamins, mineral elements, and soluble dietary fibers even when compared to whole grain cereals. Recent studies have shown extrusion processing is not only effective at producing …
Characterization Of Extraction Methods To Recover Phenolic-Rich Extracts From Pinto Beans (Baja) That Inhibit Alpha-Amylase And Alpha-Glucosidase Using Response Surface Approaches, Mohammed Alrugaibah
Characterization Of Extraction Methods To Recover Phenolic-Rich Extracts From Pinto Beans (Baja) That Inhibit Alpha-Amylase And Alpha-Glucosidase Using Response Surface Approaches, Mohammed Alrugaibah
Department of Food Science and Technology: Dissertations, Theses, and Student Research
Pinto beans contain high levels of diverse phenols, known mainly for their potent antioxidative properties. However, reports have shown that phenols can inhibit the carbohydrate–hydrolysis enzymes, alpha-amylase and alpha-glucosidase, thereby retarding glucose absorption. Still, a severe gap in knowledge exists on the ability of pinto beans to inhibit these enzymes. Therefore, the objective of this project was to determine the ability of phenolic rich extracts obtained from pinto beans (BaJa) to inhibit alpha-amylase and alpha-glucosidase. The hypothesis was that pinto beans would be able to inhibit these enzymes due to the presence of high levels of chemically diverse phenols. Response …
Studies Of Debaryomyces Hansenii Killer Toxin And Its Effect On Pathogenic Bloodstream Candida Isolates, Rhaisa A. Crespo Ramírez
Studies Of Debaryomyces Hansenii Killer Toxin And Its Effect On Pathogenic Bloodstream Candida Isolates, Rhaisa A. Crespo Ramírez
Department of Food Science and Technology: Dissertations, Theses, and Student Research
Candida species are normal commensal organisms found in the skin, mouth, and gastrointestinal and genitourinary tracts of humans. Candida albicans is a normal component of the gut flora, and the oral and genital cavities. However, this organism is an opportunistic pathogen and it is one of the most frequently isolated species from patients with nosocomial fungal infections. Candida infections have grown in recent years due to antimycotics resistance and the extensive use of antibiotics. This has pushed scientists to look for alternative therapeutic agents to treat fungal infections.
Yeasts can produce toxic proteins called “mycocins” or “killer toxins” that can …