The essential oils of the aerial part of two Asteraceae species, namely Euryops arabicus Steud. and Laggera decurrens (Vahl.) Hepper and Wood, were studied by GC and GC/MS. In parallel the antimicrobial and antioxidant activities were evaluated. The investigation led to the identification of 48 and 44 compounds for both plants, respectively. The essential oil of E. arabicus was rich in oxygenat...

HS-SPME-GC–MS analysis of the scent Dactylorhiza viridis revealed presence verbenone (28.86%), caryophyllene (25.67%), β-terpineol (9.48%), and δ-cadinene (6.94%). In romana β-ocimene (18.69%), pentadecane (18.40%), α-farnesene (14.65%), isopropyl 14-methylpentadecanoate (14.32%) were found. incarnata contained tetradecane (11.07%), (28.40%), hexadecane (19.53%), heptadecane (17.33%), α-cubenen...

Leucas zeylanica is one of the most precious gifts nature to entire civilization. It offers folkloric system a dependable option heal numerous diseases like- burning urination, toothaches, common skin diseases, gout, inflammatory conditions, rheumatic abdominal pain, worms, anorexia, colic, flatulence, etc. Many these ancient practices have got their scientific resemblances using as an agent fo...

this study was designed to examine the chemical composition and in-vitro antioxidant activity of the essential oil and methanolic extract of teucrium orientale subsp. taylori. the gc and gc–ms analysis of the essential oil resulted in determination of 40 components representing 96.4% of the oil. the major constituents of the oil were linalool (28.6%), caryophyllene oxide (15.6%), 1,8-cineol (4....

Background: Fungi growing on wood cause deterioration of stored food materials or discoloration the itself, and search for new safe bioagents is recently needed. Methods: Essential oils (EOs) from aerial parts Mentha longifolia L. Citrus reticulata L., analyzed by gas chromatography-mass spectrometry (GC-MS), were tested their antifungal activity vapor method against four common fungi, Aspergil...

Polymers with their myriad functions are indispensable to any modern technology. Today, their production is largely based on fossil fuels. In view of their limited range, other sources are desirable on the long term. Beyond such considerations, renewable resources are also attractive as they can contain unique chemical structures. Thus, carbohydrates, fatty acids or terpenes contain a wealth of...

The formation of atmospheric cloud droplets due to secondary organic aerosol (SOA) particles is important for quantifying the Earth's radiative balance under future, possibly warmer, climates, yet is only poorly understood. While cloud activation may be parametrized using the surface tension depression that coincides with surfactant partitioning to the gas-droplet interface, the extent to which...

Blumea balsamifera, also named Ainaxiang, is widely used as an ancient medicinal herb in tropical and subtropical Asia. It is rich in essential oils. In this work the essential oils of B. balsamifera from different plant organs and in different months were extracted, and then analyzed by gas chromatography-mass spectrometry. The results showed that essential oil yield of young leaves was the hi...

A structural analysis of phytochemical constituents present in the ethanolic extract Mangifera indica fresh leaves were investigated to assert presence bioactive compounds corresponding reported antioxidant, antibacterial, antihyperglycemic, antidiabetic and anthelmintics properties plant. Extraction was carried out on homogenised using conventional soxhlet apparatus, with ethanol chosen select...

Herbivorous insects use olfactory cues to locate their host plant within a complex olfactory landscape. One such example is the European grapevine moth Lobesia botrana, a key pest of the grape in the Palearctic region, which recently expanded both its geographical and host plant range. Previous studies have showed that a synthetic blend of the three terpenoids, (E)-β-caryophyllene, (E)-β-farnes...