Sökning: "reverse-phase HPLC"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden reverse-phase HPLC.

  1. 1. Studies of Sunscreens: Percutaneous Absorption of Benzophenone-3 and Photostability

    Författare :Helena Gonzalez; Göteborgs universitet; []
    Nyckelord :benzophenone-3; dihydroxy benzophenone; sunscreens; UV radiation; reverse-phase HPLC; photostability;

    Sammanfattning : Studies of Sunscreens: Percutaneous Absorption of Benzophenone-3 and Photostability Helena Gonzalez Department of Dermatology and Venereology Institute of Clinical Sciences The Sahlgrenska Academy at Göteborg University Göteborg, Sweden Abstract Aim: To learn more about percutaneous absorption of the photoactive compound benzophenone-3 (BZ-3) and to study the excretion pattern of BZ-3 and its metabolite dihydroxy benzophenone (DHB). We also got the opportunity to develop a reverse-phase HPLC method to analyze BZ-3 and DHB. LÄS MER

  3. 2. Milk Folates: Characterisation and Availability

    Författare :Karin Wigertz; Avdelningen för livsmedel och läkemedel; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; availability; ileostomy model; in vitro; HPLC; folate-binding protein; Milk; folates; Food and drink technology; Livsmedelsteknik;

    Sammanfattning : With the ultimate goal to study milk folate bioavailability, a reverse-phase HPLC technique was developed and compared with a radioprotein binding assay. All methods showed similar ranges for folates in cow’s milk, with the variation attributed to seasonal variations and the use of different starter cultures. LÄS MER

  4. 3. High-performance liquid chromatography for analysis of 32P-postlabeled DNA adducts

    Författare :Magnus Zeisig; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :DNA adducts; 32P-postlabeling; HPLC; method development;

    Sammanfattning : The formation of DNA adducts, i.e. the covalent binding of chemicals and chemical groups to DNA, is believed to be an important step in chemical carciogenesis. DNA adducts are usually formed at very low levels which requires very sensitive methods to analyze them. LÄS MER

  5. 4. Antioxidants in Andean food and meals

    Författare :Leslie Tejeda; Livsmedelsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Antioxidant capacity; polyphenolic compounds; anthocyanidins; individual food; meals; ans and stan genes;

    Sammanfattning : Abstract The constant need to improve health and to prevent disease in Bolivia, especially in the Andean region with its extreme environmental conditions (high altitude and lower temperatures), motivated us to extend studies of antioxidant sources in foods and plants, since antioxidants are believed to have major health benefits. Spectrophotometric methods, such as ABTS (2, 2’- azinobis-3-ethylbenzotiazoline-6-sulfonic acid) and FRAP (ferric reduction antioxidant power), were used to evaluate antioxidant activity. LÄS MER

  7. 5. Ribosomal RNA dynamics studied by NMR-spectroscopy

    Författare :Hampus Karlsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The ribosome is a large macromolecular machine that consists of both ribosomal proteins and ribosomal RNA (rRNA). It is a complex consisting of two subunits held together by non-covalent interactions, intersubunit bridges and some of these bridging interactions are mediated by the rRNA. LÄS MER