A rapid and simple method for the simultaneous determination of twelve sweeteners and nine preservatives in various foods by liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed. The sweeteners and preservatives were extracted from solid samples with 80% and 50% methanol and from liquid samples with 80% methanol, followed by Oasis WAX cartridge cleanup. The LC separation was ...

Bioassay guided fractionation of an antimycobacterial extract of Foeniculum vulgare var dulce (Apiaceae) led to the isolation and characterization of 5-hydroxyfurano-coumarin. The chemical structure of this compound was elucidated by 1H and 13C (1D and 2D) Nuclear Magnetic Resonance (NMR) spectroscopy. In addition, the active fractions were analyzed by GC-MS and seventy eight compounds were ide...

J Econ Entomol 82(6): 1825-1829 (1989) ABSTRACT Oriental fruit moth, Ctapholita molesta (Busck), was reared on modifications of a previously developed small lima bean diet Initial experiments showed that different types of beans substituted for lima beans produced similar yields of oriental fruit moth pupae Fresh, thinning apples provided the best diet for high yields and high pupal weights, bu...

Cells of Zygosaccharomyces bailii ISA 1307 grown in a medium with acetic acid, ethanol, or glycerol as the sole carbon and energy source transported acetic acid by a saturable transport system. This system accepted propionic and formic acids but not lactic, sorbic, and benzoic acids. When the carbon source was glucose or fructose, the cells displayed activity of a mediated transport system spec...

Fish viscera can be an important source of protein and energy for aquafeed, its use contributes to circular aquaculture. The aim this study was produce acid fermented silage from fish determine their nutritional value the apparent digestibility coefficient nutrients juvenile tambaqui (Colossoma macropomum). An three silages with different sources carbohydrates (molasses, wheat bran, cassava was...