Chemical composition and antioxidant activity of the essential oil of Alseodaphne velutina Chev. from Viet Nam

Abstract

Chemical composition and antioxidant activity of the essential oil of Alseodaphne velutina Chev.(Lauraceae) were investigated for the first time from Viet Nam. Leaf essential oil was hydrodistilled and analysed by GC and GC-MS that totally identified 32 terpenoid compounds (accouting for 89.18% of the total oil) with β-patchoulene (25.74%) and β-caryophyllene (12.81%) as two major sesquiterpene hydrocarbons compounds. The antioxidant potential of leaf essential oil was evaluated using DPPH, ABTS and FRAP assays, and revealed a moderate-tohigh activity comparable with already known antioxidant standard Trolox.

Preparation and antibacterial and antioxidant ability of β‐cyclodextrin complexes of vaporized Illicium verum essential oil

“…Absorbance values of all the solutions were determined using a UV–Vis spectrophotometer (TU‐1950, Beijing Purkinje General InstrumentCo., Ltd.) at 590 nm. The reducing power of samples was estimated using the standard calibration curve, and the results are presented as Trolox equivalent antioxidant capacity (μmol Trolox 100 g −1 ) (Cuong et al, 2020 ).…”

Encapsulation Efficiency and Functional Stability of Cinnamon Essential Oil in Modified β-cyclodextrins: In Vitro and In Silico Evidence

“…the peak area of each component the sum of all the peak area × 100% The FRAP assay was performed as previously described [20,21] with slight modifications. Briefly, the freshly prepared FRAP reagent was heated to 37 • C. After adding 100 µL CEO samples (or CD-CEO complexes equivalents to 100 uL CEO) and 100 µL ultrapure water to 850 µL FRAP reagent, the mixture was incubated at 25 • C for 10 min; 200 µL ultrapure mixed with 850 µL FRAP reagent used as a control.…”