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Articles 1 - 13 of 13
Full-Text Articles in Other Food Science
Characterizing Oxylipins In Human Milk Extracellular Vesicles, Priscila Herrera
Characterizing Oxylipins In Human Milk Extracellular Vesicles, Priscila Herrera
Food Science (MS) Theses
Extracellular vesicles (EVs) are non-replicating lipid bilayer membrane-bound particle formed by a parent cell and secreted into the extracellular environment. EVs in human milk are bioavailable and influence physiologic pathways that may contribute to newborn growth and development. There is interest in the oxylipin content of EVs that may contribute to the bioavailability of EVs. This research aims to characterize the oxylipin content of human milk EVs. Centrifugation and precipitation were used to isolate EVs from human milk (n = 20). The Folch method was used to extract lipids, and liquid chromatography-mass spectrometry (LC– MS) was used to qualify and …
Use Of A Novel Combination Of Multiplex Pcr And Dna Barcoding In Assessing Authenticity Of Ginseng Products, Diane Kim
Food Science (MS) Theses
Ginseng (Panax sp.) is a medicinal plant root used for its purported health benefits, primarily in East Asian countries. The COVID-19 pandemic led to a significant increase in sales of dietary supplements, including ginseng supplements, to purportedly support immune health and provide other health benefits. However, this heightened demand has subsequently increased the risk of adulteration in these dietary supplements. The objective of this study was to determine the efficacy of a novel combination of DNA barcoding and multiplex PCR to identify species in ginseng supplements. A total of 50 commercial ginseng supplements containing either Panax ginseng, Panax quinquefolius, or …
A Meta-Analysis Of Seafood Species Mislabeling Rates In The United States, Sarah Ahles
A Meta-Analysis Of Seafood Species Mislabeling Rates In The United States, Sarah Ahles
Food Science (MS) Theses
Seafood is vulnerable to species mislabeling due to factors such as complex global supply chains, varying prices, and similar appearance of species. Numerous studies have been published reporting a range of mislabeling rates for various forms of seafood. However, these studies oftentimes focus on lesser-consumed species that are vulnerable to species mislabeling. As a result, the overall mislabeling rate of commercially sold seafood in the U.S. remains unknown, especially for the most consumed species. Thus, the objective of the current study was to compile the results of seafood mislabeling studies into a single resource to provide informative statistics on U.S. …
Labeling Compliance, Species Authentication, And Short-Weighting Of Prepackaged Frozen Shrimp Sold In Grocery Stores In Southern California, Mckenna Rivers
Labeling Compliance, Species Authentication, And Short-Weighting Of Prepackaged Frozen Shrimp Sold In Grocery Stores In Southern California, Mckenna Rivers
Food Science (MS) Theses
While shrimp is the most-consumed seafood product in the United States, there is a lack of research into the extent of short-weighting and mislabeling of shrimp in the marketplace. The objective of this study was to investigate frozen shrimp for Country of Origin Labeling (COOL) compliance, species authentication, acceptable market names, net weights, and percent glaze. A total of 106 frozen shrimp packages were purchased from grocery stores in Southern California. Samples were determined to be COOL compliant if both the procurement method and country of origin were reported at the point of sale. Species authentication and acceptable market names …
Evaluating Mislabeling Of Raw, Ready-To-Eat Seafood Products In Orange County, California, Courtney Kitch
Evaluating Mislabeling Of Raw, Ready-To-Eat Seafood Products In Orange County, California, Courtney Kitch
Food Science (MS) Theses
Raw, ready-to-eat (RTE) seafood products have become increasingly popular globally, but they are vulnerable to species mislabeling and substitution. DNA barcoding allows for fish species identification by extracting, amplifying, and sequencing a standardized gene target. A wide variety of fish products have been studied with DNA barcoding, but notably missing are ceviche and poke, particularly in the United States. Sushi is known to be a target of mislabeling but has not been extensively studied in Orange County, CA. The objective of this study was to investigate species labeling and use of acceptable market names for sushi, poke, and ceviche sold …
Characterization Of Gangliosides And Fatty Acids In Extracellular Vesicles From Human Milk, Aliya Amin
Characterization Of Gangliosides And Fatty Acids In Extracellular Vesicles From Human Milk, Aliya Amin
Food Science (MS) Theses
Extracellular vesicles (EVs) are bioactive components of human milk that may impact functionality to regulate growth, cognitive development, metabolism, and immunity in newborns. The biogenesis of EVs and the mechanism by which EVs elicit biologic effects in vivo have not been characterized entirely. Gangliosides and fatty acids are integral in the formation, release, stability, and functionalities of EVs. Presumably, EV function is related to EV composition and lipids in EVs influence the bioavailability of EV cargo and downstream functions of EVs. The objective of this research was to characterize the fatty acid and ganglioside composition of EVs in human milk. …
The Impact Of Processing On The Content And Composition Of Bovine Milk Extracellular Vesicles, Anna Colella
The Impact Of Processing On The Content And Composition Of Bovine Milk Extracellular Vesicles, Anna Colella
Food Science (MS) Theses
Bovine milk (BM)-based formula is an alternative for many newborns who do not consume human milk. BM contains extracellular vesicles (EVs), bioactive compounds involved in intercellular communication which regulate critical developmental processes in early life. It was hypothesized that the industrial processing of raw BM affected the content and composition of BM EVs. It is critical to understand how industrial processing affects EVs in BM since changes in the content and composition may attenuate the functions of these bioactive compounds in human health. EVs from raw BM were isolated and characterized in accordance with the Minimal Information for Studies of …
Elucidating The Relation Between Human Milk Fatty Acids, Extracellular Vesicles, And Infant Developmental Outcomes In The First Year Of Life, Diana Bickmore
Elucidating The Relation Between Human Milk Fatty Acids, Extracellular Vesicles, And Infant Developmental Outcomes In The First Year Of Life, Diana Bickmore
Food Science (MS) Theses
For most infants, human milk is the recommended source of nutrition. Improved developmental outcomes have been reported in infants that consume human milk compared to infant formula. Essential fatty acids (EFAs) confer health benefits. However, EFAs cannot be synthesized by the body, and therefore must be consumed in diet. Extracellular vesicles (EVs) are nanoparticles containing a lipid bilayer membrane and are present in human milk. Methods of EV isolation such as ultracentrifugation (UC) may not be feasible for the study of EVs in human milk due to the need for large sample volume, which may not be available. The objectives …
Labeling Compliance, Species Authentication And Net Weight Identification Of Frozen Fish Fillets Sold In Grocery Stores In Southern California, April Peterson
Labeling Compliance, Species Authentication And Net Weight Identification Of Frozen Fish Fillets Sold In Grocery Stores In Southern California, April Peterson
Food Science (MS) Theses
Proper labeling of seafood is important to prevent economic deception, promote consumer awareness, and prevent exposure of at-risk groups to certain allergens and toxins. The objective of this study was to investigate prepackaged frozen fish sold in Southern California for Country of Origin Labeling (COOL) compliance, species authentication, use of acceptable market names, net weights, and percent glaze. A total of 111 frozen fish fillets from 13 different fish categories were purchased from grocery stores in Southern California. The fish categories targeted for this study were: catfish, cod, flounder, halibut, mahi-mahi orange rough, pollock, salmon, swai, swordfish, tilapia, tuna, and …
Authentication Of Species In Bison Products Using Molecular Methods, Zerika Scales
Authentication Of Species In Bison Products Using Molecular Methods, Zerika Scales
Food Science (MS) Theses
American bison (Bison bison) meat is vulnerable to species substitution due to its high value and similar appearance to less expensive meats, such as beef from domestic cattle (Bos taurus). DNA barcoding of the cytochrome c oxidase subunit 1 (CO1) gene is a commonly used method to test for meat species mislabeling. However, due to historical hybridization between the American bison and domestic cattle, additional testing is required to confirm species. The objective of this study was to perform a market survey of products sold as bison meat and verify the species of each product using …
Real-Time Pcr Combined With Dna Barcoding For The Authentication Of Red Snapper (Lutjanus Campechanus) Fillets, Rachel Isaacs
Real-Time Pcr Combined With Dna Barcoding For The Authentication Of Red Snapper (Lutjanus Campechanus) Fillets, Rachel Isaacs
Food Science (MS) Theses
Seafood substitution is a worldwide problem due to factors such as limited monitoring coupled with complex supply chains. Red snapper (Lutjanus campechanus) is a highly valued and overfished species that is commonly substituted with other fish, such as tilapia, rockfish, and other snapper species. DNA barcoding is typically used by regulatory agencies to detect seafood substitution; however, it is expensive and time-consuming. A rapid, real-time PCR assay targeting red snapper was developed previously for use in fisheries management; however, it has not been tested for its ability to detect red snapper species substitution. The objective of this study …
Effect Of Poor Sanitation Procedures On Cross-Contamination Of Animal Species In Ground Meat Products, Sunjung Chung
Effect Of Poor Sanitation Procedures On Cross-Contamination Of Animal Species In Ground Meat Products, Sunjung Chung
Food Science (MS) Theses
While the presence of ≥1% of an undeclared species in ground meat generally used as an indicator of intentional mislabeling as opposed to cross-contamination, the actual percent of undeclared species resulting from cross-contamination has not been experimentally determined. The objective of this study was to quantify the effect of sanitation procedures on the crosscontamination of animal species in ground meat products, using undeclared pork in ground beef. Pork (13.6 kg) was processed using a commercial grinder, then one of three sanitation treatments was completed (“no cleaning”, “partial cleaning”, or “complete cleaning”). Next, beef (13.6 kg) was ground using the same …
Identification Of Species In Ground Meat Products Sold On The U.S. Commercial Market Using Dna-Based Methods, Dawn Kane
Food Science (MS) Theses
Mislabeling of ground meat products is a form of food fraud that can lead to economic deception and interfere with dietary restrictions related to allergens or religious beliefs. In various parts of the world, including Ireland, Mexico and Turkey, high levels of meat mislabeling have been reported between 2000-2015. However, there is currently a lack of information regarding this practice in the United States. Therefore, 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 …