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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
171

The influence of antioxidant vitamin E on immunocompetence and oxidative stress of healthy Hong Kong individuals

Lee, Chung-yung, Jetty., 李忠英 January 1998 (has links)
published_or_final_version / Zoology / Doctoral / Doctor of Philosophy
172

Thiamine in a wet pet food application

Molnar, Lydia January 1900 (has links)
Master of Science / Department of Grain Science and Industry / Greg Aldrich / Since 2010, there have been seven recalls related to thiamine deficiency in cat food products (FDA, 2017; FSA, 2017). Cats have a high requirement of thiamine (5.6 mg/kg), and deficiencies can lead to death within a month if not treated (AAFCO, 2017). A few studies have been published regarding the impact of retort processing on thiamine loss in canned pet food but no work has been reported on heat penetration in other containers (pouches and trays). Therefore, our objectives were to determine the effect of container size and type on thiamine retention during processing of cat food. Our hypothesis was that thiamine retention would be impacted by container size and type. To address this, a 2x3 factorial arrangement of treatments in which two container sizes (small: 89-104 mL vs medium: 163-207 mL) and three container types (can, pouch, and tray) were evaluated for B-vitamin losses and thermal process lethality of a wet pet food. A model wet cat loaf type formula was produced for all six experimental treatments and each was processed in duplicate over six-days. All ingredients including the vitamin premix (10x level) were thoroughly mixed, heated to 43ºC, and containers were manually filled. The filled and sealed containers were cooked in a retort (cans: SJ Reid Retort, Bellingham, WA; trays and pouches: FMC retort, Madera, CA) with thermocouples attached to the center of representative containers (n=14) in each batch. Software (Calsoft Systems, v. 5.0.5) was used to record the internal temperatures. The retort time was targeted to meet an F₀=8 at 121ºC and 21 PSI. Treatment sample were analyzed for included pH, moisture, crude protein, crude fat, ash, and B-vitamins. Results were analyzed using the GLM procedure in SAS (v. 9.4; Cary, NC) with means and interactions separated using Fisher LSD method by significant F and an α of 5%. The proximate composition and pH were similar (P > 0.10) among treatments. There was an interaction (P < 0.05) between container size and type for time to reach the F₀=8; wherein, the medium can and tray had the longest time (45.5 and 46.3 min, respectively); the small can and tray, and medium pouch were intermediate (35.4, 36.0, and 32.0 min, respectively); and the small pouch had the shortest time (36.0 min). There was no difference for either main effect of container type or size on heating lethality values (each main effect average F₀=10.3) and total lethality ranged from 12.7-16.7 min. Thiamine retention was lowest (70%) among the B-vitamins, and there was minimal loss throughout the process. The excess heating beyond F₀=8 may account for the dramatic impact on the retention of heat labile nutrients like thiamine. This may be more difficult to control in the newer packaging systems like pouches and trays.
173

Relationship between maternal prenatal vitamin use and infant iron status

Wilkins, Jennie P., January 2002 (has links)
Thesis (M.S.)--West Virginia University, 2002. / Title from document title page. Document formatted into pages; contains vi, 43 p. Vita. Includes abstract. Includes bibliographical references (p. 34-36).
174

Association between circulating concentrations of micronutrients and risk of being diagnosed with primary lung cancer among smokers

Rahman, Nuzhat. January 2009 (has links) (PDF)
Thesis (M.S.)--University of Alabama at Birmingham, 2009. / Title from PDF title page (viewed on Feb. 2, 2009). Includes bibliographical references (p. 35-48).
175

Vitamin deficiencies and enzymatic activities in the nutrition and metabolism of chicks

Voll, Connie Kay, 1945- January 1977 (has links)
No description available.
176

IN VITRO DESTRUCTION OF VITAMIN A AND CAROTENE BY RUMEN LIQUOR AS RELATEDTO RATION EFFECT AND CERTAIN ADJUVANTS OF CATTLE FEEDS

Keating, Eugene Kneeland, 1928- January 1964 (has links)
No description available.
177

Vitamin content of human milk

King, Pin, 1947- January 1972 (has links)
No description available.
178

Requirements for vitamin C as affected by exercise

Carpenter, Phyllis May 06 1900 (has links)
Graduation date: 1943
179

The influence of antioxidant vitamin E on immunocompetence and oxidative stress of healthy Hong Kong individuals /

Lee, Chung-yung, Jetty. January 1998 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1999. / Includes bibliographical references (leaves 218-268).
180

The effect of protein intake on the vitamin B₆ requirement of man as determined by the excretion of quinolinic acid and the niacin metabolites and of vitamin B₆ and four-pyridoxic acid

Kelsay, June LaVelle, January 1967 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1967. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

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