The kinetics of antibacterial activity cajuput oil (Melaleuca cajuputi) to E. coli, B. cereus, and S. aureus were investigated. aim this study was determine the reaction orders as an agent. extraction conducted by water-steam distillation. yield 0.88%. GC-MS analysis showed that contained β-ocimene (19.35%), 1.8-cineole (17.67%), limonene (12.09%), β-caryophyllene (9.51%), γ-terpinene (8.93%), ...

The anticancer and anti-inflammatory activities of wild-sage (Lantana camara) leaves essential oil were evaluated against various human cell lines. In this regard, steam hydro-distillation technique was used for extraction. Chemical characterization L. camara (LCEO) done by GC-MS, forty one chemical components (98.69%) detected in LCEO. major constituents caryophyllene oxide (19.63%), (6.68%), ...

The aim of this study was to determine the volatile components Helichrysum arenarium (L.) Moench subsp. aucheri that belongs genus, belonging Asteraceae family, one important families for Turkey and generally known as ‘ölmez çiçek, altın otu or mantuvar’ in Turkey. To components, leaves flowers specimens were collected from Isparta Aksu Adana Feke villages Turkey, dried at room temperature. The...

Pine oleoresin is a major source of terpenes, consisting of turpentine (mono- and sesquiterpenes) and rosin (diterpenes) fractions. Higher oleoresin yields are of economic interest, since oleoresin derivatives make up a valuable source of materials for chemical industries. Oleoresin can be extracted from living trees, often by the bark streak method, in which bark removal is done periodically, ...

In this study, the effect of glycerol (0.5, 1 and 1.5% w/w) and vegetable oil (2, 3 and 4% w/w) on the equilibrium headspace concentration of target volatile flavor compounds released from the orange beverage emulsions during storage was investigated by using the headspace solid phase microextraction (HS-SPME). The peak areas of 13 target orange flavor compounds (i.e. ethyl acetate, α-pinene, e...

Microalgae are recognized as a third generation feedstock for biofuel production due to its rapid growth rate and lignin-free characteristic. In this study, the lipid extracted microalgal biomass residues was used as the material to produce isoprene, α-pinene and β-pinene with the engineered E. coli strain. We adopted an optimal sulfuric acid hydrolysis method (1:7 ratio of solid to acid soluti...

Guatteria pogonopus Martius, a plant belonging to the Annonaceae family, is found in the remaining Brazilian Atlantic Forest. In this study, the chemical composition and antitumor effects of the essential oil isolated from leaves of G. pogonopus was investigated. The chemical composition of the oil was determined by GC-FID and GC/MS analyses. The in vitro cytotoxicity was evaluated against thre...

Abstract. Dahlia is a genus of flowering plants about 35 to 40 species, distributed mainly in Mesoamerica. The aim this work was study the chemical composition leaflet and capitulum essential oils D. imperialis growing wild Costa Rica. were obtained by hydrodistillation modified Clevenger apparatus. performed capillary gas chromatography with flame detector (GC-FID) chromatography-mass spectrom...

The preparation of bioactive derivatives from the renewable natural product pinene is a hot research topic in deep processing and utilization pinene. In this study, β-pinene was used to develop novel molecules as promising new precursor insecticide. A series amide-containing were synthesized characterized. insecticidal activities these against Mythimna separate Semiaphis heraclei tested. struct...

BACKGROUND Montanoa guatemalensis is a small to medium-sized tree in the Asteraceae that grows in Central America from Mexico south through Costa Rica. There have been no previous investigations on the essential oil of this tree. METHODS The leaf essential oils of M. guatemalensis were obtained from different individual trees growing in Monteverde, Costa Rica, in two different years, and were...