OPTICAL SENSOR OF FLAVONOIDS BASED ON LIQUID CRYSTAL
In order to solve the problems associated with the express registration of the presence of biologically active substances in callus biomass, we propose the use of cholesteric liquid crystal (CLC) with a spiral structure as a material of a sensitive element of optical sensor of flavonoids. Cholesteric liquid crystal BLO62 is proposed to use as a sensitive element. Spectral characteristics of alcohol solutions of flavonoids (20%, 40%, 70% and 90%) were obtained. The interaction of CLC with quercetin was analyzed. The scheme of the primary information signal converter is developed in which the current from the photodetector is transmitted to the developed signal converter. The device is implemented with the common use Atmega 328 microcontroller manufactured by Atmel. Speciality of this structural scheme is its flexibility and versatility, which makes it easy to reconfigure the parameters of the firmware for the registration of various types of investigated mediums.
optical sensor; liquid crystal; flavonoids; quercetin
Barylo G., Holyaka R., Prudyus I., Fabirovskyy S.: Parametric analysis of galvanostatic type impedance measuring front-end. Proceedings of the 4th International scientific-practical conference problems of infocommunications–science and technology PIC S&T, Kharkiv 2017, 323–326.
Barylo G., Holyaka R., Virt V., Vezyr F.: Method of analysis errors of measuring conversion of impedance spectroscopy with activation nonharmonic signals. Scientific Journal of the Ternopil National Technical University 86/2017, 108–116.
Barylo G., Mykytyuk Z., Holyaka R., Vistak M., Virt V., Vezyr F.: Parametric analysis of input circuits of galvanostatic type impedance measuring transducers. Sensors & Transducers 214/2017, 64–68.
Barylo G.I., Holyaka R.L., Virt V.V., Vezyr F.F.: Parametric analysis of synchronous detector devices of impedance spectroscopy. Scientific and technical journal Applied radio electronics 16/2017, 41–45.
Bashtyk Y., Bojko O., Fechan A., Grzyb P., Turyk P.: Primary converters for optical sensors of physical values based on polymer dispersed cholesteric liquid crystal. Molecular Crystals and Liquid Crystals, 642/2017, 41–46 [DOI: 10.1080/15421406.2016.1254509].
Bishchaniuk T.M., Balaban O.V., Shvets R.Y., Grygorchak I.I., Fechan A.V., Lukiyanets B.A., Ivashchyshyn F.O.: Electronic processes and energy storage in inorganic/organic nanohybrids. Molecular Crystals and Liquid Crystals 589/2014, 132–140 [DOI: 10.1080/15421406.2013.872404].
Dudok T.H., Savaryn V.I., Krupych O.M., Fechan A.V., Lychkovskyy E., Cherpak V.V., Pansu B., Nastishin Y.A.: Lasing in imperfectly aligned cholesterics. Applied Optics 54/2015, 9644–9653 [DOI: 10.1364/AO.54.009644].
Kobsar А.Ya.: Pharmacognosy in medicine. Medecine, Kyiv 2007.
Konechna R., Khropot O., Petrina R., Kurka M., Gubriy Z., Novikov V.: Research of antioxidant properties of extracts of the plants and the callus biomass. Asian Journal of Pharmaceutical and Clinical Research 10/2017, 182–185.
Konechna R.T, Petrina R.O.: Extracts of callus and vegetative raw materials Arnica montana L. Pharmaceutical Clinical Pharmacy, Pharmacotherapy and Medical Standardization 1/2015, 100–104.
Mikityuk Z., Fechan A., Semenova J.: Liquid crystal material for light modulators on the base of cholesteric-nematic phase transition. Proceedings of SPIE – The International Society for Optical Engineering, Electronic Imaging: Science & Technology, 1996. 196–208 [DOI: 10.1117/12.235353].
Mykytyuk Z., Fechan A., Petryshak V., Barylo G., Boyko O.: Optoelectronic multi-sensor of SO2 and NO2 gases. Proceedings of 13th International Conference on Modern Problems of Radio Engineering, Telecommunications and Computer Science TCSET, Lviv 2016, 402–405 [DOI: 2016.7452070].
Nad` B. B.: Bioecological and biotechnological bases for preservation of the gene pool Arnica montana L. in Transcarpathia. Тimpani, Uzhhorod – Berehove 2014.
Pokorny J.: Application of phenolic antioxidants in food products. EJEAF Chem. 7/2008, 3320–3324.
Sushynskyi O., Prystay T., Mykytyuk Z.: The nanocomposite on the base of liquid crystal material with aluminum nitride for sulfur dioxide optical sensor. Proceedings of SID International Symposium Digest of Technical Papers EuroDisplay, 2015, 92 [DOI:92 10.1002/sdtp.10507].
Sushynskyi O., Vistak M., Dmytrah V.: The sensitive element of primary transducer of protein optical sensor. Proceedings of the 13th International Conference Modern Problems of Radio Engineering, Telecommunications and Computer Science, TCSET, Lviv 2016 418–421.
Vistak M., Dmytrah V., Horbenko Ju.: Investigation of spectral characteristics of cholesteric liquid crystals at carbohydrates influence. Eastern European Journal of Enterprise Technologies 6/2016, 18–22 [DOI:10.15587/1729-4061.2015.65481].
Vistak M., Dmytrah V., Mykytyuk Z., Petryshak V., Horbenko Y.: A liquid crystal-based sensitive element for optical sensors of cholesterol. Functional Materials 24/2017, 687–691 [DOI: 10.15407/fm24.04.687].
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.