Essential Oil Composition Analysis of Species from Eastern Nepal by GC-MS and Chiral GC-MS, and Antimicrobial Activity of Some Major Compounds.

Cymbopogon species essential oil (EO) carries significant importance in pharmaceuticals, aromatherapy, food, etc. The chemical compositions of Cymbopogon spp. Viz.

Comparison of Volatile Constituents Present in Commercial and Lab-Distilled Frankincense () Essential Oils for Authentication.

A comparative analysis of the chemical constituents present in twenty-one commercial and two lab-distilled frankincense () essential oils was carried out using gas chromatography-mass spectrometry (GC-MS) and chiral gas chromatography-mass spectrometry (CGC-MS) for authentication. Out of the twenty-one commercial samples, six were adulterated with synthetic limonene, three were contaminated with synthetic octyl acetate, three were adulterated with castor oil, and two samples each were contaminated with frankincense resin and species, respectively, and one was contaminated with the species. Additionally, one sample was contaminated with phthalates as well as a cheap essential oil with similar compositions.

Analysis of Volatile Constituents in Species, , , and , from Nepal.

The genus Curcuma, composed of 93 species mainly originating from Asia, Australia, and South America, has been used for medicinal purposes, aromatic, and nutritional values as well as cosmetic. It plays a vital role in flavoring and coloring as well as exhibiting therapeutic agents against different diseases. Nepalese farmers are unaware of the essential oil compositions of Curcuma species, viz.

Volatile Constituent Analysis of Wintergreen Essential Oil and Comparison with Synthetic Methyl Salicylate for Authentication.

A comparative analysis of (Ericaceae) essential oils based on geographical location, distillation time, and varying distillation conditions was carried out, and their compositions were evaluated by gas chromatography-mass spectrometry (GC-MS), chiral GC-MS, and gas chromatography-flame ionization detection (GC-FID). In addition, each of seven commercial wintergreen essential oil samples from Nepal and China were analyzed. The highest extraction yield was 1.

The Chemical Profiling of Essential Oils from Different Tissues of L. and Their Antimicrobial Activities.

L. is grown as an ornamental plant, used as raw material for furniture, as a source of camphor, and its essential oil can be used as an important source for perfume as well as alternative medicine. A comparative investigation of essential oil compositions and antimicrobial activities of different tissues of was carried out.