Roland Bitsch- Prof.Dr.
- Friedrich Schiller University Jena
Roland Bitsch
- Prof.Dr.
- Friedrich Schiller University Jena
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32
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Introduction
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Publications
Publications (32)
Various foods of plant and animal origin contain riboflavin or vitamin B2. Major sources are protein-rich foods, such as milk and dairy products, and also meat products. Riboflavin occurs in foods in free form or bound in the flavins FMN (flavin mononucleotide) and FAD (flavin adenine dinucleotide). A complete analysis of riboflavin needs combined...
The aim of the present study was to assess the renal excretion of red beet juice (RBJ) antioxidants in six healthy humans. After a single oral dose of RBJ. The pharmacokinetic parameters obtained from urine were compared to those obtained after ingestion of water on an intra-individual basis. Urine was collected in intervals up to 24h post-intake....
The human bioavailability of ascorbic acid and polyphenolics such as chlorogenic acid and caffeic acid resp. from apple juice produced from the polyphenolic rich variety Brettacher was tested. After intake of 700 ml juice the antioxidant capacity in the plasma of human volunteers assessed by the TRAP-test increased significantly by 52% during the f...
Objective: The influence of either orally administered S-benzoylthiamine-O-monophosphate (benfotiamine) or thiamine nitrate on the thiamine status was tested in a randomised, two-group comparison study in 20 end-stage renal disease (ESRD) patients. Main outcome measures were the pharmacokinetics of thiamine diphosphate (TDP) in blood, the in vitro...
Background: The bioavailability of carotenoids has been investigated in animal studies as well as in human studies, so far mostly for β-carotene. Only few results exist for lycopene. In recent studies, lycopene was significantly better available from processed tomatoes compared to raw tomatoes, when using daily intakes between 16.5 mg and 75 mg lyc...
The contents of the vitamins B1 (27 ng/ml), B2 (57 ng/ml), A (1.3 µg/ml), and E (9.7 µg/ml) as well as β-carotene (0.2 µg/ml) in transitional human milk were determined for up to 35 women aged between 19 and 31 years. Additionally, the vitamin content in maternal and cord plasma as well as the erythrocytic transketolase- and glutathion-reductase ac...
Die Bestimmung der Pyruvatcarboxylase-Aktivierung im Erythrozytenhmolysat durch Messung der Enzymaktivitt vor und nach Zusatz von Biotin und ATP zum Reaktionsansatz erffnet eine Mglichkeit, den Biotinstatus in vitro zu objektivieren. Bei Biotinmangelratten ergab sich nach diesem Verfahren ein Anstieg der Pyruvat-Carboxylaseaktivitt um 70%, whrend b...
Bei Lagerungsversuchen von 2 Kartoffelsorten (Hansa, mittelfrüh; Hela, sehr früh) in verschiedenen Verpackungsmaterialien (PE‐folie, perforiert‐farblos; ‐schwach getönt; ‐stark gefärbt; PE‐folie, nicht perforiert‐farblos; Papiertüte, perforiert und nicht perforiert, Kunststoffnetze) und bei unterschiedlichen Beleuchtungsverhältnissen (Tages‐ und Dä...
