Search for dissertations about: "lutein"

Showing result 1 - 5 of 10 swedish dissertations containing the word lutein.

  2. 1. The photophysics and functions of some naturally occurring carotenoids

    Author : Helena Billsten; Kemisk fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Fysikalisk kemi; xanthophyll-binding proteins; vibrational relaxation; light-harvesting complexes; carotenoid aggregates; carotenoids; excited states; femtosecond pump-probe spectroscopy; xanthophylls;

    Abstract : Carotenoids are one of the most widespread and important group of pigments in Nature and they can act as light-harvesting agents, photoprotectors and antioxidants. Mechanisms of their multiple functions are not fully understood mainly because their complicated photophysics involving ?dark? excited states. READ MORE

  4. 2. Retinal pigment epithelial cells, oxidative stress and lipofuscin : relation to age-related macular degeneration

    Author : Staffan Sundelin; Stefan Seregard; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : In developed countries, age-related macular degeneration (AMD) is the most common cause of loss of central vision in people over the age of 65. The retinal pigment epithelium (RPE) appears to be the site of early pathological changes in AMD. READ MORE

  5. 3. Anti-cancer effects of bioactive compounds from rose hip fruit in human breast cancer cell lines : carotenoids, triterpenes, and ascorbate evaluated singly or in combination

    Author : Lijie Zhong; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Rose hips have long been used in human diets as a food ingredient and supplement. Their multiple medical properties, which have been attributed to their abundant carotenoid composition, have attracted widespread scientific attention. This thesis examined the carotenoid composition in rose hips from five rose species. READ MORE

  6. 4. Phylogeny and Signal Diversity in Widowbirds and Bishops (Euplectes spp.)

    Author : Maria Prager; Göteborgs universitet; []
    Keywords : Ploceidae; weaverbirds; stochastic character mapping; phylogenetic uncertainty; mate choice; status signalling; sexual dichromatism; C4-oxygenation; status signalling;

    Abstract : Although sexual selection for elaborate signals is well documented in numerous species, the extreme diversity in signal design and expression in many taxa is largely unexplained. This thesis explores phylogenetic, mechanistic and ontogenetic explanations for divergence in two classic condition-dependent signal traits in the African widowbirds and bishops (Euplectes spp. READ MORE

  7. 5. Intraovarian regulators of the ovulatory process. Studies in the rat and human

    Author : Marita E. Pall; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : LH stimulation of the preovulatory follicle results in extensive biochemical and morphological changes which lead to follicle rupture. Many redundant and parallel functioning mediator systems are involved in this process. READ MORE