Essential oils (EOs) with a wide spectrum of antibacterial activities have been suggested as potent alternative sources for controlling multidrug-resistant bacteria. This paper presented the evaluation anti-H. pylori activity EOs from rhizomes Zingiber officinale, Curcuma zedoaria, longa and Alpinia officinarum. The Eos, obtained by steam distillation method, were evaluated their minimal inhibi...

The potential of plant essential oils (EOs) in anticancer treatment has recently received many research efforts to overcome the development of multidrug resistance and their negative side effects. The aims of the current research are to study (i) the cytotoxic effect of the crude EO extracted from Origanum vulgare subsp hirtum and its main constituents (carvacrol, thymol, citral and limonene) o...

Abstract Varroa -sensitive hygiene (VSH) is highly influenced by the worker bee’s olfactory ability. Workers bred for VSH and non-selected control line workers were tested differences in their speed perception ability when presented with diluted stimuli. Four different substances (citral – dilution 1:1300, linalool -parasitized brood extract, isopropanol) used as tactile stimuli differential co...

This study aimed to identify the chemical composition (ash, cellulose, total chlorophylls, carotenoid, and essential oil (EO) content), antioxidant activity, mineral of lemon balm (Melissa officinalis L) obtained from Bulgaria. The EO was analyzed using gas chromatography-mass spectrometry (GC-MS). major constituents were caryophyllene oxide (33.99%), n-hexadecanoic acid (14.28%), α-citral (6.6...

The chemical factors that regulate the synthesis of resveratrol (RV) in filamentous fungi are still unknown. This work reports on RV production by Arcopilus aureus MaC7A under controlled conditions and effect amino acid precursors (PHE TYR), monoterpenes (limonone, camphor, citral, thymol, menthol), mixtures hydrolytic enzymes (Glucanex) as elicitors for boosting fungal RV. Batch cultures with ...

BACKGROUND It has been recently recognized that oxidative stress, helminth and microbial infections are the cause of much illness found in the underdeveloped, developing and developed countries. The present study was undertaken to identify the chemical composition, and to assess anthelmintic, antimicrobial and antioxidant effects of Thymus bovei essential oil. METHODS The chemical composition...

Preparations from Pimenta pseudocaryophyllus (Gomes) L.R. Landrum (Myrtaceae) have been widely used in Brazilian folk medicine. This study aims to evaluate the antimicrobial activity of the crude ethanol extracts, fractions, semipurified substances, and essential oils obtained from leaves of two chemotypes of P. pseudocaryophyllus and to perform the antinociceptive and anti-inflammatory screeni...

Single odors are processed differently from odor mixtures in the cortex of rodents. We investigated whether single and binary odor mixtures activate different regions also in the human brain. We analyzed data from positron emission tomography scans using pyridine, citral, and 5 mixtures of pyridine and citral in proportions varying from 10/90 to 90/10, with 50/50 being the most impure. Comparin...

Phytopathogenic fungi can lead to significant cereal yield losses, also producing mycotoxins dangerous for human and animal health. The fungal control based on the use of synthetic fungicides can be complemented by "green" methods for crop protection, based on the use of natural products. In this frame, the antifungal activities of bergamot and lemon essential oils and of five natural compounds...

The combined effects of a mild heat treatment (55 degrees C) and the presence of three aroma compounds [citron essential oil, citral, and (E)-2-hexenal] on the spoilage of noncarbonated beverages inoculated with different amounts of a Saccharomyces cerevisiae strain were evaluated. The results, expressed as growth/no growth, were elaborated using a logistic regression in order to assess the pro...