@article{KleinDarvinMeinkeetal.2013,
  author    = {Klein, Julia and Darvin, Maxim E. and Meinke, Martina C. and Schweigert, Florian J. and M{\"u}ller, Kerstin E. and Lademann, J{\"u}rgen},
  title     = {Analyses of the correlation between dermal and blood carotenoids in female cattle by optical methods},
  series = {Journal of biomedical optics},
  volume    = {18},
  journal   = {Journal of biomedical optics},
  number    = {6},
  publisher = {SPIE},
  address   = {Bellingham},
  issn      = {1083-3668},
  doi       = {10.1117/1.JBO.18.6.061219},
  pages     = {6},
  year      = {2013},
  abstract  = {Herd health programs for the maintenance of welfare and productivity in cattle need efficient tools for monitoring the health of individual animals. Recent reports demonstrate that the oxidative status is related to various stress conditions in dairy cows. Biomarkers, among other carotenoids, could serve as indicators of stress originating from the environment (e.g., heat stress or sun radiation) or from the animal itself (e.g., disease). To date, only invasive in vitro tests are available to assess the oxidative status in cattle. The present study compares the results of optical noninvasive in vivo measurements of dermal carotenoids in cattle udder skin using an LED-based miniaturized spectroscopic system (MSS) with those obtained by photometric analysis of beta carotene in whole blood samples using a portable device. Correlations between the concentrations of dermal and blood carotenoids were calculated under consideration of the nutritional status of the animals. Significant correlation (R = 0.86) was found for cattle with a moderate to obese body condition. Thus, the blood and skin concentrations of the marker substance beta carotene are comparable under stable stress conditions of the cattle. This demonstrates that the MSS is suitable for noninvasive assessment of dermal carotenoid concentrations in cattle.},
  language  = {en}
}
@article{AliHomannKhaliletal.2013,
  author    = {Ali, Mostafa and Homann, Thomas and Khalil, Mahmoud and Kruse, Hans-Peter and Rawel, Harshadrai Manilal},
  title     = {Milk whey protein modification by coffee-specific phenolics effect on structural and functional properties},
  series = {Journal of agricultural and food chemistry : a publication of the American Chemical Society},
  volume    = {61},
  journal   = {Journal of agricultural and food chemistry : a publication of the American Chemical Society},
  number    = {28},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {0021-8561},
  doi       = {10.1021/jf402221m},
  pages     = {6911 -- 6920},
  year      = {2013},
  abstract  = {A suitable vehicle for integration of bioactive plant constituents is proposed. It involves modification of proteins using phenolics and applying these for protection of labile constituents. It dissects the noncovalent and covalent interactions of beta-lactoglobulin with coffee-specific phenolics. Alkaline and polyphenol oxidase modulated covalent reactions were compared. Tryptic digestion combined with MALDI-TOF-MS provided tentative allocation of the modification type and site in the protein, and an in silico modeling of modified beta-lactoglobulin is proposed. The modification delivers proteins with enhanced antioxidative properties. Changed structural properties and differences in solubility, surface hydrophobicity, and emulsification were observed. The polyphenol oxidase modulated reaction provides a modified beta-lactoglobulin with a high antioxidative power, is thermally more stable, requires less energy to unfold, and, when emulsified with lutein esters, exhibits their higher stability against UV light. Thus, adaptation of this modification provides an innovative approach for functionalizing proteins and their uses in the food industry.},
  language  = {en}
}