Life Sciences Commons^™

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 …

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 …

Monitoring Yogurt Culture Fermentation And Predicting Fermentation Endpoint With Fluorescence Spectroscopy, Timothey P. Mains, Frederick Alan Payne, Michael P. Sama

Biosystems and Agricultural Engineering Faculty Publications

Determination of the endpoint of yogurt culture fermentation is a process parameter that could benefit from automation. The feasibility of using a fluorescence sensor technology based on 280 nm excitation and 350 nm emission to predict the endpoint of yogurt culture fermentation was investigated and compared with the endpoint prediction from a near-infrared (880 nm) light backscatter sensor. Yogurt cultures with three levels of milk solids (8%, 10%, and 12%) and three temperatures (40°C, 43°C, and 46°C) were tested with three replications in a 3 x 3 factorial design (n = 27). Prediction models were developed for each optical measurement …

Productivity And Adaptation Ability Of Holstein Cattle Of Different Genetic Selections, Ivan Fiodorovich Gorlov, Svetlana Evgenievna Bozhkova, Olga Pavlovna Shakhbazova, Vera Vasilievna Gubareva, Natali Ivanovna Mosolova, Elena Yurievna Zlobina, Yuriy Nicolaevich Fiodorov, Alexey Sergeevich Mokhov

Turkish Journal of Veterinary & Animal Sciences

The purpose of the research was to compare economically useful traits of Holstein cows of different selections. The results show that the German and Australian selections were superior to the Danish and American cows in terms of their growth (at 36 months of age, the body weights of the German and Australian cows were 36.5 and 27.6 kg greater than the Danish cows and 24.3 and 15.4 kg greater than the American cows, respectively). Maximum milk yield was obtained from the American and German cows (25,220 and 24,861 kg). Their milk also had higher fat content. The maximum protein content …

Examination Of The Effects Breed And Nutrition Have On The Milk Protein Profile Produced By Lactating Dairy Cattle, Rinske Tacoma

Graduate College Dissertations and Theses

Milk is a highly nutritious natural product and research over the last 10 years has proven that these milk proteins not only provide a rich source of amino acids to the consumer but also contains many bioactive proteins and peptides known to exert biological activity benefitting human health. In this research, proteomic methods were first used to characterize the low abundance proteome within the skim milk fraction produced by Holstein and Jersey dairy cows maintained under the same diet, management and environmental conditions. Milk samples were collected over a seven day period from six Holstein and six Jersey dairy cows. …