Search for dissertations about: "vitamin A"

Showing result 16 - 20 of 461 swedish dissertations containing the words vitamin A.

  2. 16. Studies on Vitamin B12 and Folate Deficiency Markers in the Elderly : A Population-based Study

    Author : Karin Björkegren; Kurt Svärdsudd; Åke Schwan; Herman Nilsson-Ehle; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicine; Cobalamin; folate; MMA; tHcy; multivitamin; symptoms; survey; treatment trial; Medicin; Dermatology and venerology; clinical genetics; internal medicine; Dermatologi och venerologi; klinisk genetik; invärtesmedicin; Family Medicine; Allmänmedicin;

    Abstract : The aims of this study were to document the levels of cobalamin, folate, methylmalonic acid (MMA) and total homocysteine (tHcy) in serum and their relations to symptoms, clinical findings, and other factors in order to improve the possibilities of detecting early deficiency of vitamin B12 or folate, and to study the effects of cobalamin and folic acid treatment over a three-year period. The study population consisted of a 20% random sample of persons 70 years or older living in Älvkarleby in mid-Sweden. READ MORE

  4. 17. Provitamin A Carotenoids in Orange-Fleshed Sweet Potato

    Author : Anton Bengtsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; orange-fleshed sweet potato; food processing; high-performance liquid chromatography; β-carotene; β-carotene uptake; Caco-2 cells; provitamin A carotenoids; vitamin A deficiency; iron;

    Abstract : Vitamin A deficiency is a major nutritional disorder in a large number of developing countries. The disorder is mainly caused by an inadequate intake of preformed vitamin A and provitamin A carotenoids from the diet. It is also recognized that vitamin A deficiency and iron deficiency tend to coexist in many population groups. READ MORE

  5. 18. Thiamin (vitamin B1) in the aquatic food web

    Author : Emil Fridolfsson; Samuel Hylander; Michael T. Brett; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; phytoplankton; zooplankton; thiamin; transfer; food web dynamics; micronutrient; vitamin; Baltic Sea; community composition; M74; salmon; B1; växtplankton; djurplankton; tiamin; överföring; födoväv; mikronäringsämne; vitamin; Östersjön; B1; lax; Ecology; Ekologi;

    Abstract : Thiamin (vitamin B1) is required for several life-sustaining processes in most organisms and cells, e.g. in the conversion of food to energy. It also serves as an antioxidant and is important for proper nerve signaling. READ MORE

  6. 19. In vitro accessibility of provitamin A carotenoids in vegetables and fruits - Effects of different process and preparation methods and estimation of vitamin A activity

    Author : Ellen Hedrén; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; in vitro accessibility; provitamin A carotenoids; lactic acid fermentation; food matrix; cell wall degrading enzymes; vegetables; vitamin A activity; beta-carotene; red palm oil; fruits;

    Abstract : Vitamin A deficiency is a major nutritional problem in many developing countries, caused chiefly by a diet with low retinol content. The bioefficacy of provitamin A carotenoids in plant foods is claimed to be insufficient to maintain a satisfactory vitamin A status. READ MORE

  7. 20. Disruption of vitamin A metabolism by dioxin

    Author : Pi Högberg; Karolinska Institutet; Karolinska Institutet; []
    Keywords : TCDD; dioxin; vitamin A; retinoic acid; cellular retinol-binding protein; bone;

    Abstract : Vitamin A (retinoids) is a nutrient that plays a central role in development and remains essential for cell growth and differentiation throughout life. Dioxins are polychlorinated organic pollutants known to negatively affect the storage and body clearance of retinoids. READ MORE