Characterization of the compound of longan honey from indonesia using LC-MS/MS and FTIR and the mechanism of inhibition of HEp-2 cells

: Indonesian honey contains active compounds that have the potential as antioxidant and anticancer, especially as anticancer of the larynx through inhibition of HEp-2 cells. This study aims to determine the active compounds in longan honey and proposes the mechanism of action in inhibiting HEp-2 cells. The sample was used in the form of longan obtained from honey bee breeders in Central Java. Honey samples were extracted using methanol, and then liquid-liquid partitioning was carried out successively using n-hexane and ethyl acetate. Isolation and characterization of longan honey samples using FTIR and LC-MS/MS showed the presence of the following compounds: Xanthoxol glycosides, Santonin, Octadecanamide, Indole-3 carboxylaldehyde, 3,4-dimethoxycinnamic acid, Dimethyl esculetin, Tryptophan, O-acetyl-L-serine, D-glucose-6-phosphate, Feruloiltyramine, Lauryl diethanolamide, Taurine, 6-mercaptopurine, 3-(2,4-dichlorophenyl)-4-phenylcoumarin, 3',4'-dimethoxy-3-hydroxy-6- methylflavone and D-1-((3-carboxypropyl)amino)-1-deoxyfructose. The compounds in longan honey against HEp-2 cells is quercetin, 3,6-dimethoxycinnamic acid, phenyl coumarin, dimethyl esculetin, santonin, 6-mercaptopurine, and feruloyltyramine. The proposed mechanism of active compound in honey to inhibit HEp-2 cells in s everal ways including via caspase pathway and purine synthesis and other relevant mechanisms . However, this assumption needs to be tested further to obtain more precise information regarding the mechanism of inhibition of HEp-2 cells.