Willy Tirza Eden, Dante Alighiri, Nanik Wijayati, Sri Mursiti
The synthesis of chalcone derivatives from clove leaf waste and their potential application as natural antioxidants have been studied. Synthesis of chalcone derivatives takes six steps: (1) distillation of clove leaf oil waste, (2) isolation of eugenol from clove leaf oil, (3) isomerization reaction of eugenol to produce isoeugenol, (4) oxidation reaction of isoeugenol to produce vanillin, (5) O-allylation reaction of vanillin to produce 4-allyloxy-3-methoxy benzaldehyde, and (6) Claisen-Schmidt condensation reaction of compound 5 with acetophenone to yield 3-(4-allyloxy-3-methoxyphenyl)-1-phenyl prop-2-en-1-one as chalcone derivative of target molecule in 97.28% yield. The antioxidant activity was evaluated in oleic acid oxidation reaction in comparison to butylated hydroxytoluene (BHT) as a standard by using ferric thiocyanate (FTC) and thiobarbituric acid (TBA) methods. The test showed that the order of antioxidant activity was as follows : BHT > 3-(4-allyloxy-3-methoxyphenyl)-1-phenyl prop-2-en-1-one > vanillin > 4-allyloxy-3-methoxy benzaldehyde. © 2021, Springer Science+Business Media, LLC, part of Springer Nature.
Essential Oil Study Center, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Central Java, Semarang, 50229, Indonesia; Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Central Java, Semarang, 50229, Indonesia
