Bioprospecting of a Indigenous Strain for Chasselas Winemaking in 2022 Vintage.

Interest in () is growing in the world of winemaking. is used both to protect musts from microbial spoilage and to modulate the aromatic profile of wines. Here, we describe the isolation, characterization, and use of an autochthonous strain of in the vinification of Chasselas musts from the 2022 vintage.

Attraction of Females towards the Aggregation Pheromone Neryl ()-2-Methylbutanoate and Kairomones in a Y-Olfactometer.

An understanding of insect olfaction allows for more specific alternative methods of pest control. We evaluated the responses of the western flower thrips (WFT, ) in a Y-olfactometer to estimate gas-phase concentrations of the aggregation pheromone neryl ()-2-methylbutanoate and known kairomones such as methyl isonicotinate, ()-(-)-verbenone, and -anisaldehyde. The gas-phase concentrations of these compounds were obtained from the release rates measured in dynamic headspace cells.

Simulating latrine conditions to assess perfume performance against malodour.

To evaluate perfume performance in toilets, we built model toilets in which critical factors such as background malodour, climate, and airflow were controlled. The models were equipped with an odour generator that injected hydrogen sulfide, methyl mercaptan, butyric acid, para-cresol, and indole, allowing us to accurately and reliably reconstitute toilet malodour headspace. The malodorant concentrations matched the quantitative headspace analysis performed in African and Indian toilets.

Identification of Hydrogen Disulfanes and Hydrogen Trisulfanes in HS Bottle, in Flint, and in Dry Mineral White Wine.

Through the accidental contamination of a gas cylinder of HS, the importance of polysulfanes for flint, gun powder, and match odors was discovered. The hydrogen disulfane was prepared from disulfanediylbis[methyl(diphenyl)silane], and its odor descriptor was evaluated in the gas phase from a gas chromatograph coupled to an olfaction port. The occurrence of this compound in flint and pebbles was confirmed by analyses after derivatization with pentafluorobromobenzene.

Quantitative headspace analysis of selected odorants from latrines in Africa and India.

This analytical investigation focuses on the quantification of odorant molecules in the headspace of latrines. Hydrogen sulfide and methyl mercaptan were derivatized under a more stable N-ethyl maleimide conjugate. Since the amount of odorant molecules is very low in the gas phase, we developed a method that had two steps of concentration.

Water vapour and heat combine to elicit biting and biting persistence in tsetse.

Background: Tsetse flies are obligatory blood feeders, accessing capillaries by piercing the skin of their hosts with the haustellum to suck blood. However, this behaviour presents a considerable risk as landing flies are exposed to predators as well as the host's own defense reactions such as tail flicking. Achieving a successful blood meal within the shortest time span is therefore at a premium in tsetse, so feeding until replete normally lasts less than a minute.

An extended phase II trial of iodine-125 methylene blue for sentinel lymph node identification in women with breast cancer.

Background: The aim of this study was to determine if an intraoperative injection of iodine-125-labeled methylene blue ((125)I-MB) is a sensitive and effective method for detecting SLNs in women with breast cancer.

Study Design: Sixty-two women were enrolled in an extended phase II trial using (125)I-MB to guide SLNB. All patients were anesthetized and then injected subcutaneously with 1 mCi (125)I-MB in the outer quadrant of the areola.