Essential Oil Constituents and in Vitro Antimicrobial Activity of <i>Decalepis hamiltonii</i> Roots against Foodborne Pathogens
Devarajan Thangadurai, S. Anitha, T. Pullaiah, Ponnathota Narasimha Reddy, Oleti Siva Ramachandraiah
Journal of Agricultural and Food Chemistry
Abstract
Hydrodistillation of Decalepis hamiltonii roots yielded an essential oil (0.33% v/w) that contained 2-hydroxy-4-methoxybenzaldehyde (37.45%), 2-hydroxybenzaldehyde (31.01%), 4-O-methylresorcylaldehyde (9.12%), benzyl alcohol (3.16%), and alpha-atlantone (2.06%) as major constituents, with aromatic aldehydes constituting the main fraction of this root's essential oil. The oil was tested for its antimicrobial activity against foodborne pathogens responsible for food spoilage and human pathologies using standard antimicrobial assays. It exhibited strong antimicrobial activity against Bacillus cereus, Bacillus megaterium, Candida albicans, Escherichia coli, Micrococcus luteus, Micrococcus roseus, and Staphylococcus aureus at a concentration range of 1:0 with inhibitory activities of 27, 23, 16, 19, 22, 19, and 23 mm, respectively, which are comparable to those of the standards. The roots of D. hamiltonii, therefore, may be considered as an inexpensive source of an essential oil rich in antimicrobial compounds against foodborne pathogens.
Extracted Claims
7 claims extracted from this paper into the knowledge graph
4-O-methylresorcylaldehyde is a major constituent of essential oil from Decalepis hamiltonii roots
“Hydrodistillation of Decalepis hamiltonii roots yielded an essential oil (0.33% v/w) that contained 4-O-methylresorcylaldehyde (9.12%)”
2-hydroxy-4-methoxybenzaldehyde is a major constituent of essential oil from Decalepis hamiltonii roots
“Hydrodistillation of Decalepis hamiltonii roots yielded an essential oil (0.33% v/w) that contained 2-hydroxy-4-methoxybenzaldehyde (37.45%)”
essential oil from Decalepis hamiltonii roots exhibited strong antimicrobial activity against Bacillus cereus, Bacillus megaterium, Candida albicans, Escherichia coli, Micrococcus luteus, Micrococcus roseus, and Staphylococcus aureus
“It exhibited strong antimicrobial activity against Bacillus cereus, Bacillus megaterium, Candida albicans, Escherichia coli, Micrococcus luteus, Micrococcus roseus, and Staphylococcus aureus at a conc...”