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Full-Text Articles in Nutrition
Β-Lactoglobulin Molten Globule Induced By High Pressure, Jian Yang, A. Keith Dunker, Joseph R. Powers, Stephanie Clark, Barry G. Swanson
Β-Lactoglobulin Molten Globule Induced By High Pressure, Jian Yang, A. Keith Dunker, Joseph R. Powers, Stephanie Clark, Barry G. Swanson
Stephanie Clark
Beta-lactoglobulin (beta-LG) was treated with high hydrostatic pressure (HHP) at 600 MPa and 50 degrees C for selected times as long as 64 min. The intrinsic tryptophan fluorescence of beta-LG indicated that HHP treatment conditions induced a conformational change. HHP treatment conditions also promote a 3-fold increase in the extrinsic fluorescence of 1-anilinonaphthalene-8-sulfonate and a 2.6-fold decrease for cis-paraneric acid, suggesting an increase in accessible aromatic hydrophobicity and a decrease in aliphatic hydrophobicity. Far-ultraviolet circular dichroism (CD) spectra reveal that the secondary structure of beta-LG converts from native beta-sheets to non-native alpha-helices following HHP treatment, whereas near-ultraviolet CD spectra reveal …
Factors For Success In Online And Face-To-Face Instruction. (Online Instruction), Brian Miller, Dr. Nancy Cohen, Patricia Beffa-Negrini
Factors For Success In Online And Face-To-Face Instruction. (Online Instruction), Brian Miller, Dr. Nancy Cohen, Patricia Beffa-Negrini
Nancy L. Cohen
This study compared academic achievement between undergraduate students in an introductory nutrition course online and students taking the same course in a large-class lecture format. Using a quasi-experimental research design, two instructional treatments (online, [N=35] and large-class lecture instruction [N=434J) were applied to two groups of students and their achievement was measured by a pretest and posttest of nutrition knowledge as well as final course grade. No significant differences in posttest scores (nutrition knowledge) were found. When data were partitioned for age, however, older students taking the online course had significantly higher final course grad.es than both their younger online …