Synthesis of Vanillin from Lignin

Gitaari, Njiema and Benard, Kandie and Gichuki, Joyline and Kareru, Patrick (2019) Synthesis of Vanillin from Lignin. Chemical Science International Journal, 27 (1). pp. 1-5. ISSN 2456-706X

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Abstract

Vanillin (4-hydroxy-3-methoxybenzaldehyde) is the major flavour constituent of vanilla. It has a wide range of applications in food industry and in perfumery. Vanillin is also very useful in the synthesis of several pharmaceutical chemicals. Lignin is a phenolic polymer which is found in plant cell walls with a structure depending strongly on the source of lignin and the process condition, which should be adjusted for different samples. In this work, lignin was extracted from Kraft cooking liquor of wood ash. The amount of extracted lignin was 25.5%, based on oven dry weight of wood ash. The lignin obtained was then reacted with alkaline nitrobenzene and refluxed at 170°C for 3 hours to obtain vanillin. The FT-IR spectrum of vanillin was similar to standard. The yield obtained from oxidation with nitrobenzene was 3.9%.

Item Type: Article
Subjects: Science Global Plos > Chemical Science
Depositing User: Unnamed user with email support@science.globalplos.com
Date Deposited: 01 Apr 2023 10:58
Last Modified: 26 Feb 2024 04:30
URI: http://ebooks.manu2sent.com/id/eprint/450

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