To provide new insights into the development and utilization of Douchi artificial starters, three common strains (Aspergillus oryzae, Mucor racemose, Rhizopus oligosporus) were used to study their influence on fermentation Douchi. The results showed that biogenic amine contents types all within safe range far lower than those traditional fermented Aspergillus-type pr...

Sexually deceptive orchids employ floral volatiles to sexually lure their specific pollinators. How and why this pollination system has evolved independently on multiple continents remains unknown, although preadaptation is considered to have been important. Understanding the chemistry of sexual deception is a crucial first step towards solving this mystery. The combination of gas chromatograph...

An efficient synthesis of (1H-tetrazole-5-yl) pyrazines is achieved by one pot multi- component coupling reaction of α-dicarbonyl compounds, 2,3-diaminomaleonitrile and sodium azide using MgFe2O4 nanoparticles as a robust catalyst under ultrasonic irradiation. This novel synthesic method using MgFe2O4 nanoparticles is easier, faster than that of using other nanoparicles. MgFe2O4 nanoparticles h...

In the last few years, production and consumption of craft beers has increased notably. However, there is restricted knowledge about potential impact chips from different wood species on beer quality. Thus, this work aimed to evaluate effect addition cherry oak species—after fermentation was completed during a brief maceration time—on volatile composition three groups (Ale, Lager, Porter) throu...

Previously, we showed that pyridines and pyrazines in cigarette smoke inhibit oviductal functioning in vitro in nanomolar and picomolar doses. The purpose of this study was to determine the lowest observable adverse effect levels (LOAELs) of phenols, quinolines, indoles, benzene, and 2-cyclopenten-1-ones found in mainstream smoke solutions on ciliary beat frequency, oocyte pickup rate, and infu...