Food Science Commons^™

Nutrition And Bone Density In Children With Cystic Fibrosis, Joanna K. Davidson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of these studies was to further research on bone density in children with cystic fibrosis, particularly as it pertains to nutritional parameters and care. The first paper presented a comparison of a group of 50 children with cystic fibrosis to a group of 32 control children. There were no significant differences between the groups in any of the pertinent bone density measurements. Serum 25(OH) vitamin D was positively correlated with spine density z score in the cystic fibrosis group.

The second paper, incorporating all of the information obtained from the first paper, describes an intervention study with the …

Cultivation Of Mushroom Mycelia Using Whey Products As A Growth Substrate, Boyd S. Inglet

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As part of a project designed to utilize common dairy waste products profitably, reconstituted dry whey permeate and delactosed whey were tested as growth substrates for mycelia of the edible mushroom Lentinus edodes. This mushroom was chosen because it is possible to profitably cultivate it due to its popular culinary appeal and perceived medical benefits.

Growth experiments were performed in petri dishes containing either reconstituted dry whey permeate or delactosed whey as a growth substrate, and the measured response was the size of the growing mycelia colony. When reconstituted dry whey permeate was utilized as a growth substrate, the …

Casein Supramolecules: Structure And Coagulation Properties, Bonney S. Oommen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The changes in quaternary structure of casein supramolecules with various physical and chemical treatments were studied using transmission electron microscopy, and a model to account for the changes is put forth. The effects of casein structure on coagulation properties were also studied. The sample preparation for transmission electron microscopy involved physical methods of fixation and flash freeing to preserve the structure of caseins in the sample.

The structure of caseins in sodium and calcium caseinate varied with sodium caseinate not exhibiting any spherical structure as opposed to the spherical structure seen in calcium caseinate, non-fat dried milk and native milk. …

Hormone Mediated Transport Of Calcium And Phosphate In Polarized Epithelial Cells, Tremaine M. Sterling

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effects of 1,25(OH)₂D₃, PTH and 25(OH)D₃ on phosphate or calcium uptake were studied in cultured, adherent chick enterocytes over a period of 10 min after hormone addition. Time course studies of cells treated with 130 pM 1,25(OH)₂D₃ showed an increase in ³²P uptake as early as 3 min. Similar studies with 65 pM bPTH(l1-34) resulted in an increase in ⁴⁵Ca uptake only if the cells had been cultured in serum. (OH)D₃, which is not firmly established as an active metabolite of vitamin D, was shown to increase …

Correlation Between The Usu Stretch Test And The Pizza Fork Test, Bryce L. Moyes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A correlation between the USU stretch test and the pizza fork test would allow the stretch properties of Mozzarella cheese to be measured objectively. The Utah State University (USU) Stretch Test uses a modified texture-profile analyzer to pull strands of cheese from a melted reservoir, measuring the load exerted on the probe during stretching. Parameters measured by the USU stretch test include Melt Strength (F_M), which is the maximum load exerted on the probe, Stretch Load (SL), which is the load exerted on the probe at any specified point following F_M, and Stretch Extension (SE), which …

The Influence Of Fat And Water On The Melted Cheese Characteristics Of Mozzarella Cheese, Robert Lloyd Fife

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effect of reducing the fat content of low-moisture part-skim Mozzarella cheese from 19% to less than 5% on melted cheese properties, i.e., apparent viscosity, cheese melt, and cook color, was investigated. Functional properties of melt and stretch and cook color were evaluated at d 1, 7, 14, and 28. A rapid microwave oven method underestimated the moisture content of the low fat cheeses by approximately 10%. Low fat cheese did not melt as well as did the low-moisture part-skim Mozzarella cheese although the moisture content of the low fat cheese (moisture content ranged from 62.5% to 63.6%) was greater …

Vitamin K As A Prophylaxis In The Infant, Michelle Whipple

Undergraduate Honors Capstone Projects

Since the mid-1960's, all infants in the US have received intramuscular vitamin K (IMVK) as a prophylactic measure against hemorrhagic disease of the newborn (HDN). Because the human race has obviously survived for so many years without this medical intervention, there is some question concerning the universal necessity of this practice.

Infants are born with comparatively low levels of vitamin K, a compound vital for the carboxylation of serum clotting factors. In the absence of adequately carboxylated clotting proteins, infants are at risk for developing HDN. This condition can cause severe complications, including mental retardation and death. IMVK significantly reduces …

Influence Of Storage Duration, Temperature, And Oxygen On Quality Of Stored Dehydrated Foods, Omima Ali Darag

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was undertaken to determine the effect of oxygen absorber packets (OAP) (AGELESS Z.300 E) in improving the shelf-life of selected dried food products, including dried potato pearls, dried sliced apple, dried carrot, white rice, nonfat dry milk, all purpose flour, rolled oats, and wheat. Items were stored at four different temperatures (-20, 10, 21, and 29.5°C) over a period of 24 months with observations at 6-month intervals. Hunter colorimeter, thiobarbituric acid reactive substance (TBARS) germination rate, gluten weight, and volume were parameters used as quality indicators of various dried foods.

Statistical analysis indicated a significant time and temperature …

Rapid Detection Of Listeria Monocytogenes, Wim Lippens

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Listeria monocytogenes is a foodbome pathogen that can cause severe illness and even death. It is found in dairy and meat products. The focus is on rapid detection since conventional methods are time consuming (4-5 days). Pre-enrichment steps, as part of those methods, are time consuming. Our objective was to develop a detection system without a pre-enrichment step, giving a final result within 2 to 4 h.

In the concept of "the need for speed," a detection system with an antibody-based capture technique, followed by polymerase chain reaction (PCR), was developed. Glass beads coated with a Listeria polyclonal antibody were …

Aromatic Amino Acid Catabolism By Lactobacillus Spp.: Biochemistry And Contribution To Cheese Flavor Development, Sanjay Gummalla

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Amino acids derived from the degradation of casein in cheese serve as precursors for the generation of desirable and undesirable flavor compounds. Microbial degradation of aromatic amino acids is associated with the formation of aroma compounds that impart putrid-fecal, barny-utensil, and floral off-flavors in cheese, but pathways for their production had not been established. This study investigated Tyr and Phe catabolism by Lactobacillus casei and Lactobacillus helveticus cheese flavor adjuncts under simulated Cheddar cheese-ripening conditions (pH 5.2, 4% NaCl, 15°C, no sugar). Enzyme assays of cell-free extracts and micellar electrokinetic capillary chromatography of supernatants indicated that L. casei and L. …

The Effect Of Ginkgo Biloba On Alzheimer's Disease, Allison Marie Wozney

Undergraduate Honors Capstone Projects

Alzheimer's disease is a progressive dementia associated with increasing loss of memory, intellectual function, and disturbances in speech. It is the most common form of dementia. It is an incurable disease and has four stages which culminate in coma and death. The average survival rate for Alzheimer's is seven years. Presently, the only treatments approved in the United States for Alzheimer's are the drugs tacrine and donepezil. These drugs improve cognitive function in early Alzheimer's. However, Ginkgo biloba has recently been looked at as another treatment option and has been approved for use in Germany. Ginkgo Biloba was originally used …

The Effect Of Lactobacillus Helveticus And Propionibacterium Freudenreichii Ssp. Shermanii Combinations On Propensity For Split Defect In Swiss Cheese, Steven R. White

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One of the least controlled defects in Swiss cheese is development of splits. Split defect is characterized by fissures or cracks in the body of the cheese that can be as short as 1 cm in length or long enough to span a 90-kg block. This defect appears during refrigerated storage after the cheese is removed from the warm room. Swiss cheese with splits is downgraded because it is unsuitable for use on high-speed slicing equipment (up to 1,000 slices per minute).

A 2x2x2 factorial experiment was used to determine the effect of different commercial Lactobacillus helveticus starters combined with …

Tryptophan Catabolism In Brevibacterium Linens Bl2, Madhavi Ummadi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Recent studies suggest aromatic amino acid catabolism by starter lactococci and flavor adjunct bacteria have a significant impact on off-flavor development during Cheddar cheese ripening. We hypothesized that a flavor adjunct bacterium, Brevibacterium linens BL2, produces off-flavor compounds from aromatic amino acid metabolism that will have a detrimental impact on cheese flavor.

The mechanism of tryptophan (Trp) catabolism in Brevibacterium linens BL2, was investigated in a chemically defined medium during incubation in laboratory conditions (no carbohydrate, pH 6.50, 220 rpm, 25°C) and cheese-like conditions (no carbohydrate, 4% NaCl, static incubation, l5°C). In laboratory conditions, metabolic studies and enzyme assays confirmed …

Do You Have Tips For Safe Home Canning Of Tomatoes And Salsa?, Jean Alder

All Archived Publications

No abstract provided.

Cakes -- Pies Cookies, Utah State University Extension

All Archived Publications

No abstract provided.

Healthy Eating For Teens, Karen Bergs

All Archived Publications

No abstract provided.

How Can I Involve My Children In Food Preparation?, Georgia Lauritzen

All Archived Publications

No abstract provided.

Nutrition News, Karen Bergs, Laura Prestwich Prestwich

All Archived Publications

No abstract provided.

Diabetes Healthy Lifestyle, Laura Prestwich

All Archived Publications

No abstract provided.

Spending Calendar, Utah State University Extension

All Archived Publications

No abstract provided.

Can I Have My Pumpkin And Eat It Too?, Jean Alder

All Archived Publications

No abstract provided.

June: Variety, Utah State University Extension

All Archived Publications

No abstract provided.

Nutrition News, Karen Bergs, Laura Prestwich Prestwich

All Archived Publications

No abstract provided.

Meats, Utah State University Extension

All Archived Publications

No abstract provided.

Soups And Sauces, Utah State University Extension

All Archived Publications

No abstract provided.

Do You Have Hard Facts On Hard Boiled Eggs For Easter?, Georgia Lauritzen

All Archived Publications

No abstract provided.

Do You Have Suggestions For Using Some Of My Older Food Storage Items?, Rebecca Low

All Archived Publications

No abstract provided.

Should I Take A Vitamin E Supplement?, Georgia Lauritzen

All Archived Publications

No abstract provided.

Yeast Breads, Utah State University Extension

All Archived Publications

No abstract provided.

Stir Fry, Utah State University Extension

All Archived Publications

No abstract provided.