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Essay / Determination of vanillin in imitating vanilla essence This experiment involves analyzing the concentration of the active ingredient vanillin in artificial vanilla essence by UV-Visible spectrometry.1.2 BackgroundVanilla is one of the most commonly flavored used in addictive foods such as ice cream and milk. There are two types of vanilla: pure vanilla and imitation vanilla. Pure vanilla is made from the vanilla pod while imitation vanilla is made from clove oil extracted from the pod then combined with ethanol and sugar or glycerin (Correspondent, 2003) . Inside vanilla is a molecule called vanillin or known as 4-hydroxy-3-methoxybenzaldehyde. The chemical bond structure of vanillin is shown in Figure 1 below. The vanillin contained in vanilla is mainly used to give the flavor and smell of vanilla. Today, the consumption of pure vanilla is less than that of imitation vanilla because its production is time consuming and labor intensive. Therefore, the cost of vanilla extract is higher than that of imitation vanilla (Correspondent, 2003).Figure 1: Vanillin (Wikimedia Common, 2014)1.3 Technical analysisThe determination of vanilla concentration in this experiment involves three main steps, which are extraction of vanillin from the other components of the essence using an organic solvent, back extraction of vanillin in the form of sodium salt in aqueous phase using using dilute sodium hydroxide and determining vanil concentration...... middle of paper ...... different in data accuracy.6.0 Reference Correspondent, DY (2003). Daytona Beach News - Journal, The. Know Beans on Vanilla, Imitation: [WEST VOLUSIA Edition].Elder, K. (nd). How accurate are your experiments? Retrieved from Kennewick High School Science: http://kehsscience.org/How%20accurate%20are%20your%20experiments.pdfOliva-Chatelain, BL and Barron, AR (2010). Basics of UV-Visible spectroscopy. Retrieved from openstax cnx: http://cnx.org/content/m34525/latest/Schneider, RF (2013). From the Beer Law: http://www.ic.sunysb.edu/Class/che133/lectures/beerslaw.htmlW. H. Bunnelle, LA (nd). Extraction. Retrieved from University of Missouri: http://www.chem.missouri.edu/chem2050/expt_2.pdfWikimedia Common. (2014). File:Vanillin.png. Retrieved from Wikimedia Common: http://commons.wikimedia.org/wiki/File:Vanillin.png
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