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Biomedical subjects

H Lamparczyk

Publications and source records attributed to H Lamparczyk.

26 records · Page 2Linked to original sources

Structure-olfactory activity relationship in a group of substituted phenols.

Using phenol as the standard relative olfactory thresholds have been determined for a series of substituted phenols in experiments with 8--10 human subjects. Significant relations have been obtained describing the activity as a square function of the hydrophobicity parameter corrected for ionization. Chromatographic measurement of phenol polarity has been proposed based on retention indices determined on phases of different polarity. The human sense of smell system has been discussed as a model for studies on drug-receptor interactions involving the living organism as a whole.

Chemical Phenomena↗

Fluorescence enhancement of two terpenes commonly present in essential oils.

The fluorescence spectra of anethole and eugenol dissolved in methanol-aqueous binary systems with the addition of alpha- and beta-cyclodextrin were studied. Observed enhancement of the fluorescence intensity is possibly due to the higher quantum yield of the cyclodextrin-hydrocarbon inclusion complexes. The measured fluorescence intensities for eugenol and anethole in the presence of alpha- and beta-cyclodextrin were processed using principal component analysis. The results obtained suggest 1:1 and 2:1 complexation, as confirmed by a double reciprocal plot for terpenes complexed to cyclodextrins. In both cases (anethole and eugenol) detection limits were improved after addition of cyclodextrins. This phenomenon can be applied for improvement of direct fluorescence and HPLC-fluorescence assays.

Allylbenzene Derivatives↗