Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 5 of 5
Full-Text Articles in Entire DC Network
Rice Bran Stabilization By Improved Internal And External Heating Methods., Jiaxun Tao
Rice Bran Stabilization By Improved Internal And External Heating Methods., Jiaxun Tao
LSU Historical Dissertations and Theses
Rice bran stabilization was conducted by internal (microwave), external (oven drying and steam retorting) heating and non-heating ($\sp{60}$Co irradiation) treatments to improve currently used methods. Two commercial rice varieties cultivated in Louisiana, one long grain (Lemont) and a medium grain (Nato), were milled to collect bran samples. The bran was analyzed for its proximate composition and various physical and thermal characteristics. The proximate composition for long and medium grain bran, respectively, was: moisture, 11.2% and 10.8%; protein, 16.07% and 16.20%; fat, 19.20% and 21.97%; crude fiber, 8.49% and 8.41%; ash, 9.23% and 9.46%; and nitrogen-free extract, 47.01% and 44.07%. Physical …
Comparison Of Clinical Isolates Of Klebsiella Pneumoniae To Klebsiella Sp. Isolated From Summer Harvested Eastern Oysters, Crassostrea Virginica (Gmelin)., Thomas Elbert Graham
Comparison Of Clinical Isolates Of Klebsiella Pneumoniae To Klebsiella Sp. Isolated From Summer Harvested Eastern Oysters, Crassostrea Virginica (Gmelin)., Thomas Elbert Graham
LSU Historical Dissertations and Theses
Suspected environmental fecal coliform positive Klebsiella sp. oyster isolates were analyzed and compared to human clinical isolates of Klebsiella pneumoniae. Oyster isolates were urease negative (at 24 hours) and were identified as K. pneumoniae using API 20E biochemical test strips. The ability to produce fecal coliform reactions was lost by 65% of the oyster isolates after undergoing several passages on brain-heart-infusion agar at 20$\sp\circ$ to 25$\sp\circ$C. Tests with 4-methylumbelliferyl-B-d-glucuronide (MUG) found both oyster and clinical isolates to be MUG negative. Moles % guanine plus cytosine (mol% G + C) information indicated that oyster isolates had mol% G + C values …
Changes In Lipid Composition Of Gulf Coast Marine Species As Influenced By Processing And Storage Treatments., Rafida Idris
Changes In Lipid Composition Of Gulf Coast Marine Species As Influenced By Processing And Storage Treatments., Rafida Idris
LSU Historical Dissertations and Theses
The lipid composition, and changes to lipid components of several marine finfish due to frozen storage, canning and use of various physical and chemical treatments during storage were evaluated. In Phase I, and lipid content of mullet (Mugil cephalus), croaker (Micropogon undulatus), redfish (Sciaenops ocllata) and red snapper (Lutiganus campechanus) fillets obtained from a local supermarket, was approximately 5% with phospholipids representing $<$5% of the total lipid. Vitamin A was not detectable but vitamin E was found in mullet. Mullet had a higher degree of oxidation compared to other species. In Phase II, fresh mullet were wrapped in oxygen impermeable freezer paper or vacuum packaged and frozen at $-$20$\sp\circ$C, or were thermally processed. After 90 days of frozen storage, a second batch of mullet was thermally processed. Total lipid, phospholipid, vitamins A and E and oxidation were determined at 0, 90, 180 and 360 days of storage. TBA number increased by 9.42mg/1000 g after 360 days of frozen storage. Oxidation did not occur in canned fish. Fish canned at 90 days evidenced greater oxidation after canning but further oxidation during storage did not occur. Vacuum packaging inhibited oxidation to a significant degree. Phospholipid decreased in frozen fish to the greatest degree, followed by vacuum packaged samples. Loss of phospholipid in freshly canned mullet was small. In frozen canned mullet, the change was greater. Vitamin E level decreased during frozen storage from 0.69 mg/100 g to a trace amount and the loss was 38% as a result of canning. In Phase III a comparative effect of prefreezing dip treatment, use of antioxidants in the dip and oxygen limitation by vacuum packaging on the lipid composition of frozen stored blackdrum (Pogonius cromis) was studied. Analyses were made at 2 week interval during a 12 week storage period. Total lipid averaged 4% in all treatment samples and phospholipid was $<$5% of total lipids. The effectivness for the inhibition of oxidation in frozen blackdrum was 0.025% TBHQ (tert-butylhydroquinone) $>$ 1% and 0.5% $\alpha$-tocopherol $>$ water dip $>$ vacuum pack $>$ no dip treatment. Vitamin A was quantifiable but not Vitamin E. No significant change in Vitamin A content was observed in any …
Arch: A Robust Construction Heuristic For The Layout Design Of Food Processing Facilities., George Robert Baskin
Arch: A Robust Construction Heuristic For The Layout Design Of Food Processing Facilities., George Robert Baskin
LSU Historical Dissertations and Theses
A Robust Construction Heuristic (ARCH) represents the first attempt to develop a facilities layout design algorithm tailored to the particular solution of the food processing facility layout problem where a fluctuating product mix due to seasonality or changes in consumer demand is typical. The foundation literature for this research comes predominantly from the industrial engineering, management science, and food science fields. Construction heuristics built layouts from scratch and provided poor quality results. Robustness algorithms had no simplifying heuristics but were reported to yield potentially higher quality layouts than traditional algorithms for layout problems with fluctuating product mixes. ARCH was developed …
Modeling, Simulation, And Automatic Control For Optimum Drying And Storage Of Rough Rice In A Bin System., Jong Hoon Chung
Modeling, Simulation, And Automatic Control For Optimum Drying And Storage Of Rough Rice In A Bin System., Jong Hoon Chung
LSU Historical Dissertations and Theses
A study on modeling, simulation, and automatic control for optimum drying and storage of rough rice in a farm-bin system was conducted to address some aspects of rice post-harvest technology. Resistance-type moisture sensors and temperature and humidity sensors were evaluated for continuously monitoring the conditions of air and grain. Models to predict rice moisture models during drying and storage were developed. Based on accuracy and predictability, the use of the capacitance-type humidity sensor is recommended over the resistance-type moisture sensor. A pressure drop model of airflow through rough rice was developed to aid in determining the optimum size and type …