The reactions of ruthenium trichloride with Schiff bases derived from sulpha drugs in 1:2 molar ratio leads to the formation of a new series of coordination compounds of type [Ru(L) 2 (H 2 O)Cl]. The Schiff bases used here are o-Vanillin sulphanilamide (oVSaH), o-Vanillin sulphamerazine (oVSmrzH), salicylaldehyde sulphanilamide (SdSaH), salicylaldehyde sulphamerazine (SdSmrzH), 2-hydroxy-1-naph...

The method was that of Pisano et al. (1962) as described by Sandler and Ruthven (1963). 4-Hydroxy-3-methoxymandelic acid was obtained from Calbiochem (A Grade) and ethyl acetate A.R. (Analar) was used. For the purpose of this investigation, an acidified aqueous solution of V.M.A., saturated with sodium chloride, was extracted with ethyl acetate (30 ml.) which had been treated in various ways be...

Vanillin, a naturally occurring food component, has been reported to have anti-mutagenic and anti-metastatic potentials, and to inhibit DNA-PKcs activity. However, vanillin itself exhibits very weak antiproliferative activity. We explored the effects of bromovanin (6-bromine-5-hydroxy-4-methoxybenzaldehyde), a novel vanillin derivative, on survival and cell-cycle progression of human Jurkat leu...

Colonizing Bacillus in vanilla (Vanilla planifolia Andrews) beans is involved in glucovanillin hydrolysis and vanillin formation during conventional curing. The flavor profiles of vanilla beans under Bacillus-assisted curing were analyzed through gas chromatography-mass spectrometry, electronic nose, and quantitative sensory analysis. The flavor profiles were analytically compared among the van...

The pursuit of circuits and metabolic pathways of increasing complexity and robustness in synthetic biology will require engineering new regulatory tools. Feedback control based on relevant molecules, including toxic intermediates and environmental signals, would enable genetic circuits to react appropriately to changing conditions. In this work, variants of qacR, a tetR family repressor, were ...

Vanillin, which is principal aroma constituent of the beans obtained from vanilla orchids, one most demanded flavoring agents in world. Because insufficient supply natural vanillin, market demand usually supplied by synthetic ones. Taking into consideration consumer trends, interest to products are rising day instead counterparts. In this study, it was investigated possibility usage biphasic sy...

In 1988, radiocarbon laboratories at Arizona, Cambridge, and Zurich determined the age of a sample from the Shroud of Turin. They reported that the date of the cloth's production lay between A.D. 1260 and 1390 with 95% confidence. This came as a surprise in view of the technology used to produce the cloth, its chemical composition, and the lack of vanillin in its lignin. The results prompted qu...

In Lepidoptera, host plant selection is first conditioned by oviposition site preference of adult females followed by feeding site preference of larvae. Dietary experience to plant volatile cues can induce larval and adult host plant preference. We investigated how the parent's and self-experience induce host preference in adult females and larvae of three lepidopteran stem borer species with d...

The combined effect of simultaneous application of heat treatments, low frequency ultrasound (20kHz) at different amplitudes, on Aspergillus flavus and Penicillium digitatum spore viability suspended in laboratory broth formulated at different aw (0.99 or 0.95) and pH (5.5 or 3.0), with or without vanillin or potassium sorbate were evaluated. An ultrasonic horn (13mm) was submerged into the bro...

Colorado Potato Beetle, Leptinotarsa decemlineata (Say) is a serious pest of potato plants and devastates additional crops such as eggplant, tomato, pepper, and tobacco by its voracious feeding. Plants of the Lamiaceae family produce a large number of polyphenols with insecticidal activity. In this study we tried to identify if some of these compounds could be used as antifeedants and if there ...