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Modified Atmosphere Packaging Of Fresh -Cut Sweetpotatoes., Elif Erturk
Modified Atmosphere Packaging Of Fresh -Cut Sweetpotatoes., Elif Erturk
LSU Historical Dissertations and Theses
Fresh-cut sweetpotato products have potential to create new value-added market opportunities. To determine optimum film packaging and storage temperature, fresh-cut sweetpotato slices were packaged with semipermeable polyolefin films, having different gas transmission characteristics and kept at 2 or 8°C for 14 days. The films chosen, in order of increasing permeability, were Cryovac PD900, PD961, and PD941. Among the films, only PD941 film bags maintained an aerobic atmosphere during the 14 days at both temperatures. However, the high weight loss in slices with PD941 film bags will limit the use of these film bags as modified atmosphere packaging (MAP) material. PD961 …
Water Quality Model For Evaluation Of Nonpoint Source Impacts Of Rice Field Runoff., Elizabeth Deette Smythe
Water Quality Model For Evaluation Of Nonpoint Source Impacts Of Rice Field Runoff., Elizabeth Deette Smythe
LSU Historical Dissertations and Theses
Water quality impairment in many water bodies in the state of Louisiana is attributed to agricultural nonpoint sources of pollution. Many of these use-impaired streams have also been hydromodified to facilitate agricultural development, deepening and straightening the channels to form "stretch lakes". This dissertation evaluated the unique, and previously uncharacterized and unquantified ricefield loadings and their impacts on these dystrophic waterbodies in order to provide the Louisiana Department of Environmental Quality (LDEQ) with assessments of stream impacts from implementing altered cropping practices known as "best management practices" (BMPs). In order to produce an assessment of rice BMPs, this dissertation developed …
Modeling Escherichia Coli Concentration In Surface Runoff: The Ecoli Model., Teck Yee Ling
Modeling Escherichia Coli Concentration In Surface Runoff: The Ecoli Model., Teck Yee Ling
LSU Historical Dissertations and Theses
A biological model, ECOLI, is developed that is capable of continuously simulating E. coli concentration in surface runoff from agricultural land applied with manure. The model was calibrated and validated by using data from field-scale studies at Franklinton, Louisiana. During validation the model was interfaced with GLEAMS-SWT model to obtain the necessary hydrologic and erosion variables as input to the ECOLI model. The ECOLI model was found to perform best when simulating runoff concentration following the first application of waste. For reapplication of waste within 50 days, the trend of decrease over time was well-simulated but simulated E. coli concentrations …
Comparative Efficacy And Quality Characterizatin Of Mayhaw (Crataegus Opaca) Juice Extraction., Alfred Francois Trappey Ii
Comparative Efficacy And Quality Characterizatin Of Mayhaw (Crataegus Opaca) Juice Extraction., Alfred Francois Trappey Ii
LSU Historical Dissertations and Theses
The comparative efficacy and quality characterization of juice by six extraction methods utilizing either frozen or fresh 'Texas Star' mayhaw (Crataegus opaca Hook. and Arn.) fruit obtained from the 1998 and 1999 crop season were conducted according to temperature (cold-press or hot-press extraction) and fruit pulp pretreatment (whole or pulverized fruit with or without pectolytic enzyme). Extraction methods were steam extraction using whole fruit without added pulp juice (SE); steam extraction using whole fruit with added pulp juice (SEP); cold-press extraction using whole fruit (CPE); cold-press extraction using finely macerated fruit pulp (CPEG); hot-press extraction using finely macerated fruit pulp …