Online ISSN: 2515-8260

Keywords : Ethanol


DEVELOPMENT OF SELECTIVE SENSORS FOR DETERMINATION OF ETHYL ALCOHOL VAPORS

Ergashboy Abdurakhmanov; Zulfiya Begmuradovna Murodova; Farrukh Fakhriddinovich Kholmurzaev; Bakhtiyor Bakhodir ugli Akhmedov

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 9, Pages 2769-2779

The paper establishes the regularities of the oxidation of combustible substances in the presence of catalytic systems of different nature and on their basis the catalysts for measuring and compensation sensitive elements of a thermocatalytic ethanol vapor sensor are selected. The possibility of creating highly sensitive and selective sensors with the use of measuring and compensating thermosensitive elements of the sensor containing catalysts of different activity to the components of complex gas-air mixtures has been experimentally confirmed.The main metrological characteristics and operational parameters of the developed selective thermocatalytic ethanol sensors are estimated. The developed utensils allow the determination of ethyl alcohol vapors in wide ranges of its concentrations and have the best metrological characteristics and operational parameters.

HONEY AS A CYTOLOGICAL FIXATIVE – A COMPARATIVE STUDY WITH ETHANOL

B. Sabarinath; Preethi Sundaraman; B. Sivapathasundharam

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 9, Pages 1015-1019
DOI: 10.31838/ejmcm.07.09.102

Background: Tissues are fixed and preserved and protected from putrefaction and autolysis before routine histopathological or cytological examination. Ethanol is commonly used as a cytological fixative due to its better preservation of nuclear details. Honey, a natural product which possess antibacterial; acidic; dehydrative properties which classify it as fixative than a preservative. Aim:The aim of this study is to compare ethanol with honey as a cytological fixative. Materials and Methods: Smear samples of buccal mucosa from patients submitted to the Outpatient Department of Oral Pathology and Microbiology, Meenakshi Ammal Dental College and Hospital, Chennai, were included in the study group. The study consisted of two groups. Group I that used alcohol as the fixative comprising of 30 smear samples and Group II that used 10% honey to fix 30 smear samples.A double-blind study was conducted. Statistical Analysis: Independent t-test was the statistical method applied for the study using SPSS software (Version 17). Result: The results are discussed. Conclusion: Honey can be used asan alternate fixative to alcohol in cytopathology.

PHYTOCHEMICAL PROFILE OF CINNAMON EXTRACT (Cinnamomum Burmanii Blume) FROM THREE REGIONS OF SUMATRA ISLAND USING GCMS

Liana Verdini; Budi Setiawan; Tiurma Sinaga; Ahmad Sulaeman; Wayan Teguh Wibawan

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 2, Pages 4557-4568

This study aims to determine the phytochemical components of different extracts of Cinnamomum burmanii B. from different regions in Indonesia by GC-MS using ethanol, distilled water and isopropyl alcohol as solvents. The analysis showed that the ethanol extract of cinnamon from the Aceh region, which contains five compounds with biological activity and the main compound was 59.77% coumarone. Meanwhile, the distilled water extract contains four compounds with biological activity, and the main chemical compound was 37.01% coumarin. For the extract of isopropyl alcohol, contains four compounds with biological activity and the main compound was coumarin at 41.55%. The ethanol extract of cinnamon from Jambi region contains three compounds with its biological activity and the main compound was coumarin at 28.31%, while the extract using distilled water contains four compounds with biological activity and the main compound was 1-phenyl-4- carboxy-4,5 at 33.50%. Furthermore, for the isopropyl alcohol extract, there are five compounds with biological activity, and the most important chemical compound was 2-propanol at 45.89%. Meanwhile, the ethanol extract of cinnamon from West Sumatra contains six compounds that were identified as biological activity and the main compound was 2-propanol at 14.97%, while the distilled water extract contains four compounds with biological activity and the main compound was 17.49% for 1-phenyl -4-carboxy-4,5. For the extract of isopropyl alcohol, four compounds with biological activity were obtained, and the main compound was 9.96% coumarin. This study confirms the existence of different bioactive compounds and biological activities in each original region of cinnamon in Indonesia.

MODELLING AND DESIGN OF IMC BASED CONTROLLER FOR FERMENTATION PROCESS USED FOR THE PRODUCTION OF ETHANOL

Yashwini.V. V; S. Nagarajan; S. Sobana

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 4, Pages 2828-2840

In this paper, efficient production of ethanol from corn by using fermentation process is discussed. A mathematical model is developed for the above-mentioned process and the challenges in adjusting the specific growth rate(μmax) has been addressed. Also, the rate or velocity of growth of the microbial cells which is the key affecting factor of the substrate concentration is adjusted for optimum results. On successful design of the mathematical model, the concentration of ethanol is controlled by using four different controllers out of which one suitable controller is considered as the ideal controller for the production of ethanol from corn

Phytochemical Profile Of Cinnamon Extract (Cinnamomum Burmanii Blume) From Three Regions Of Sumatra Island Using Gcms

Liana Verdini; Budi Setiawan; Tiurma Sinaga; Ahmad Sulaeman; I Wayan Teguh Wibawan

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 8, Pages 718-729

This study aims to determine the phytochemical components of different extracts of Cinnamomum burmanii B. from different regions in Indonesia by GC-MS using ethanol, distilled water and isopropyl alcohol as solvents. The analysis showed that the ethanol extract of cinnamon from the Aceh region, which contains five compounds with biological activity and the main compound was 59.77% coumarone. Meanwhile, the distilled water extract contains four compounds with biological activity, and the main chemical compound was 37.01% coumarin. For the extract of isopropyl alcohol, contains four compounds with biological activity and the main compound was coumarin at 41.55%. The ethanol extract of cinnamon from Jambi region contains three compounds with its biological activity and the main compound was coumarin at 28.31%, while the extract using distilled water contains four compounds with biological activity and the main compound was 1-phenyl-4- carboxy-4,5 at 33.50%. Furthermore, for the isopropyl alcohol extract, there are five compounds with biological activity, and the most important chemical compound was 2-propanol at 45.89%. Meanwhile, the ethanol extract of cinnamon from West Sumatra contains six compounds that were identified as biological activity and the main compound was 2-propanol at 14.97%, while the distilled water extract contains four compounds with biological activity and the main compound was 17.49% for 1-phenyl -4-carboxy-4,5. For the extract of isopropyl alcohol, four compounds with biological activity were obtained, and the main compound was 9.96% coumarin. This study confirms the existence of different bioactive compounds and biological activities in each original region of cinnamon in Indonesia.