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Materiale Plastice
Cite as: Mater. Plast.
https://doi.org/10.37358/Mat.Plast.1964

OSIM Nr. R102356
ISSN Print 0025-5289
ISSN Online 2668-8220
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Materiale Plastice (Mater. Plast.), Year 2015, Volume 52, Issue 4,





COSMIN CITU, LAVINIA CEUTA, RAMONA AMINA POPOVICI, DANIELA IONESCU, IULIA PINZARU, FLORIN BORCAN Alternative Possibilities to Asses a Phytohormone Release Rate from a Polyurethane Carrier


Abstract:
Hormones are chemical substances which transmit a message as a signal within a physiological system between the place where they are secreted and the place of their receptors where they have the biological action. In the last decades the number of studies on phytohormones has increased continuously. In this study, polyurethane microstructures with and without brassinolide were synthesized in order to assess the release rate. Two different types of drug carriers were obtained (ether- and ester-based microstructures) and the evaluations were done by using two different methods: the measurement of microstructures’ size and the determination of free brassinolide concentration. The results suggest that ester-based polyurethane microstructures degrade faster and the two methods present very similar results. Keywords: brassinolide, drug carrier, DSC, polyurethane, UV-Vis, zetasizer



Issue: 2015 Volume 52, Issue 4
Pages:
Publication date: 2015/12/30
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