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Full-Text Articles in Life Sciences
Levels, Enterotoxigenicity, Growth And Physical Characterisitcs Of B. Cereus From U.S Retail Rice, Chandrakant R. Ankolekar
Levels, Enterotoxigenicity, Growth And Physical Characterisitcs Of B. Cereus From U.S Retail Rice, Chandrakant R. Ankolekar
Masters Theses 1911 - February 2014
Bacillus cereus is a ubiquitously found foodborne pathogen that is frequently associated with two types of illness: emesis and diarrhea. Two heat labile enterotoxins have been associated with the diarrheal syndrome whereas a heat stable acid stable peptide toxin has been associated with the emetic syndrome. In the U.S, B. cereus is responsible for 1-2% of the total outbreaks from bacteria. Although there are reports of isolation and characterization of this pathogen from various food stuffs all around the world, there are no reports on the levels, toxin producing ability, or growth characteristics from U.S retail rice. Considering that rice …
Impact Of Chemical And Physical Properties On The Ability Of Antioxidants To Inhibit Lipid Oxidation In Foods, Jean Alamed
Impact Of Chemical And Physical Properties On The Ability Of Antioxidants To Inhibit Lipid Oxidation In Foods, Jean Alamed
Masters Theses 1911 - February 2014
Lipid oxidation is a major problem in foods resulting in alteration of texture, appearance, off flavors, aroma and decreased nutritional quality. The ability of compounds to inhibit lipid oxidation in foods is dependent on both physical and chemical properties. The effects of heating (50-90°C), ethylenediaminetetraacetic acid (EDTA), and calcium on the oxidative and physical stability of salmon oil-in-water emlusions were investigated in the first study. Oil-in-water emulsions were prepared with 2% salmon oil, stabilized by 0.2% Brij 35 at pH 7. Above 2.5 μM, EDTA dramatically decreased lipid oxidation in all samples. Addition of calcium to emulsions containing 7.5 μM …
Colloidal Particles As Antimicrobial Carrier Systems, Dustin W. Carnahan
Colloidal Particles As Antimicrobial Carrier Systems, Dustin W. Carnahan
Masters Theses 1911 - February 2014
The objective of this thesis is to develop a method by which antimicrobials are delivered into a food product as a concentrated dose to the specific area in which the microorganism is growing without interference from the food matrix. More specifically, we plan to achieve this by delivering the antimicrobials nisin and lysozyme attached to nanoparticles and emulsion droplets. We hypothesize that (a) the attachment to a delivery vessel may increase the local concentration of the antimicrobial in the vicinity of the bacterial pathogens and (b) that the size and charge of the nanoparticle following attachment of the antimicrobials will …