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E. Havinga, “Vitamin D, Example and Challenge,” Experentia, Vol. 29, No. 10, 1973, pp. 81-93. doi:10.1007/BF01935064

has been cited by the following article:

• TITLE: Photoisomerization of Provitamin D in Hydrogel Matrix

  AUTHORS: I. P. Terenetskaya, Yu. M. Samchenko, T. N. Orlova, N. A. Pasmurceva, P. S. Kapinos, I. E. Boldeskul, Z. R. Ulberg

  KEYWORDS: Hydrogels; Provitamin D Photoisomerization; UV Biodosimeter

  JOURNAL NAME: Soft, Vol.2 No.2, June 28, 2013

  ABSTRACT: Study of interfacial processes between incorporated biomolecules and hydrogel matrix is of primary importance for the application of synthetic hydrogels as biomaterials, sensors, etc. Their hydrophilic nature, however, hampers fat-soluble biomolecule incorporation. We synthesized N-isopropylacrylamide (NIPAAm)- and Acrylamide (AA)-based hydrogels with hydrophilic-lipophilic balance that under specific conditions permit homogeneous incorporation of provitamins D3(7-dehydrocholesterol) and D2(ergosterol) dissolved in ethanol. Similarity of provitamins D photoisomerization in such hydrogel matrices with the photoreaction in ethanol shows great potential of the novel material for personal dosimetry of biologically active ‘antirachitic’ UV radiation.