Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810080932
Authors: MOHAMED, NAJLA HABEEB ELHADI
Advisor: Chattree, Dr. Amit
Title: SEPARATION & MINIMIZATION OF ALKALOIDS FROM DIFFERENT PRODUCTS OF TOBACCO USING LOW COST
Publisher: DEPARTMENT OF CHEMISTRY FACULTY OF SCIENCE SAM HIGGINBOTTOM UNIVERSITY OF AGRICULTURE TECHNOLOGY & SCIENCES ALLAHABAD – 211007 U.P.-INDIA
Language: en
Type: Thesis
Pages: 144p.
Agrotags: null
Keywords: Keywords: Alkaloids, adsorption isotherms, low cost adsorbents, HPLC, purification, column chromatography.
Abstract: The study “Separation & Minimization of alkaloids from different products of tobacco using low cost adsorbents” was carried out during 2014-2017 in the Department of Chemistry, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad, (U.P) India. The study aims to investigate the alkaloids concentration in cigarettes, raw tobacco and bidi and removal of these alkaloids at different contact time using various low cost adsorbents (Sawdust, Bagasse, Green tea leaves, Coconut fiber, Neem bark and Green tea waste). These adsorbents are cheap source agriculture waste and industrial by-products, which are easily available. They can absorb the alkaloids on their surface, thus can remove alkaloids and reduce the toxic effect of tobacco. Their adsorption capacity depends upon the weight of adsorbent used and their contact time with the alkaloid. The maximum percentage removal studies were carried out for the adsorbents with all brands of tobacco for water and methanol extract. The study also focuses on purification of alkaloids extract using Column chromatography (on silica gel bed) and their identification using HPLC by comparison with the standard nicotine solution peaks. A strong peak of nicotine was observed with minor presence of other minor alkaloids. The study revealed that sawdust, green tea leaves, green tea waste turned out to be better adsorbant while bagasse and neem bark turned out to be less efficient. Through the adsorption equilibrium study employing Langmuir and Freundlich isotherms models, the maximum monolayer adsorption capacity was reported by saw dust 178.57 mg g-1 in water extract and 277.77 mg g-1 by coconut fiber in methanol extract. According to the results obtained the maximum R2 has been reported for Page | 11 Freundlich isotherm for all adsorbent, hence it is best fitted by Freundlich isotherm for removal of alkaloids and value of ‘n’ suggests the favorability of adsorption. So the surface of adsorbent is heterogeneous in nature. The data obtained in the adsorption experiments of coconut fiber, saw dust for alkaloids in various tobacco products suggest that the adsorption occurs with ease and comfortable energy favorably.
Description: Ph. D. Thesis
Subject: Chemistry
Theme: SEPARATION & MINIMIZATION OF ALKALOIDS FROM DIFFERENT PRODUCTS OF TOBACCO USING LOW COST ADSORBENTS
Research Problem: SEPARATION & MINIMIZATION OF ALKALOIDS FROM DIFFERENT PRODUCTS OF TOBACCO USING LOW COST ADSORBENTS
These Type: Ph.D
Issue Date: 2018
Appears in Collections:Thesis

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