TY  - JOUR
A1  - Weber, Daniela
A1  - Kochlik, Bastian Max
A1  - Demuth, Ilja
A1  - Steinhagen-Thiessen, Elisabeth
A1  - Grune, Tilman
A1  - Norman, Kristina
T1  - Plasma carotenoids, tocopherols and retinol
BT  - Association with age in the Berlin Aging Study II
JF  - Redox Biology
N2  - Regular consumption of fruits and vegetables, which is related to high plasma levels of lipid-soluble micro-nutrients such as carotenoids and tocopherols, is linked to lower incidences of various age-related diseases. Differences in lipid-soluble micronutrient blood concentrations seem to be associated with age. Our retrospective analysis included men and women aged 22-37 and 60-85 years from the Berlin Aging Study II. Participants with simultaneously available plasma samples and dietary data were included (n = 1973). Differences between young and old groups were found for plasma lycopene, alpha-carotene, alpha-tocopherol, beta-cryptoxanthin (only in women), and gamma-tocopherol (only in men). beta-Carotene, retinol and lutein/zeaxanthin did not differ between young and old participants regardless of the sex. We found significant associations for lycopene, alpha-carotene (both inverse), alpha-tocopherol, gamma-tocopherol, and beta-carotene (all positive) with age. Adjusting for BMI, smoking status, season, cholesterol and dietary intake confirmed these associations, except for beta-carotene. These micronutrients are important antioxidants and associated with lower incidence of age-related diseases, therefore it is important to understand the underlying mechanisms in order to implement dietary strategies for the prevention of age-related diseases. To explain the lower lycopene and alpha-carotene concentration in older subjects, bioavailability studies in older participants are necessary.
KW  - carotenoids
KW  - tocopherols
KW  - micronutrients
KW  - age
KW  - plasma
KW  - food frequency questionnaire
Y1  - 2020
U6  - https://doi.org/10.1016/j.redox.2020.101461
SN  - 2213-2317
VL  - 32
SP  - 1
EP  - 8
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Müller, Anke Katharina
A1  - Helms, Ute
A1  - Rohrer, Carsten
A1  - Möhler, Monika
A1  - Hellwig, Frank
A1  - Glei, Michael
A1  - Schwerdtle, Tanja
A1  - Lorkowski, Stefan
A1  - Dawczynski, Christine
T1  - Nutrient composition of different hazelnut cultivars grown in Germany
JF  - Foods
N2  - Hazelnuts are rarely cultivated in Germany, although they are a valuable source for macro- and micronutrients and can thus contribute to a healthy diet. Near the present, 15 varieties were cultivated in Thuringia, Germany, as a pilot study for further research. The aim of our study was to evaluate the micro- and macronutrient composition of representative, randomly mixed samples of the 15 different hazelnut cultivars. Protein, fat, and fiber contents were determined using established methods. Fatty acids, tocopherols, minerals, trace elements, and ultra-trace elements were analyzed using gas chromatography, high-performance liquid chromatography, and inductively coupled plasma triple quadrupole mass-spectrometry, respectively. We found that the different hazelnut varieties contained valuable amounts of fat, protein, dietary fiber, minerals, trace elements, and alpha-tocopherol, however, in different quantities. The variations in nutrient composition were independent of growth conditions, which were identical for all hazelnut varieties. Therefore, each hazelnut cultivar has its specific nutrient profile.
KW  - Corylus avellana L.
KW  - nutrient composition
KW  - hazelnut cultivars
KW  - minerals
KW  - tocopherols
Y1  - 2020
U6  - https://doi.org/10.3390/foods9111596
SN  - 2304-8158
VL  - 9
IS  - 11
PB  - MDPI
CY  - Basel
ER  -