THE catalytic effect of small amounts of pyridine in the reaction between thionyl chloride and carboxylic acids is well known; Carré and Libermann 1 have shown further that it is of great ...

Abstract: This article presents a substantial review of the detection of lactic acid isomers in different beverages. Lactic acid is one of the most commonly used chemicals in beverages as a flavor ...

National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang ...

A uric acid test measures the amount of a waste product called uric acid (urate) in your blood or urine. Uric acid is a byproduct of the breakdown of chemicals called purines found in foods and drinks ...

In this study, we report a mild and convenient stereoretentive decarboxylative amidation of α,β-unsaturated carboxylic acids with easily procurable 1,4,2-dioxazol-5-ones, providing a practical ...

Stupp and colleagues propose that the assembly mechanism is caused by the X-rays' reversible ionization of carboxylic acid groups ... step to produce the cis-isomers that can be cycloaromatized.

(a) Annatto tree (known as “urucuzeiro” in Brazil) and annatto fruit (known as “urucum”), a small capsule with soft spines containing the seeds/dyes; (b) carotenoid formed by isoprene ...

Microbiology is the study of bacteria, fungi, algae, protozoa and viruses, and is of immense importance in relation to the environment, agriculture and food, biomedical sciences and biotechnology.

Chemical Engineering is concerned with the design and operation of processes which convert materials and energy into the higher value products we use every day. It understands the processes which ...

The increasing bacterial resistance to known antibiotics has been causing concern in the population, since their therapeutic possibilities have been diminishing. 1 This has led to intensified research ...

Monounsaturated and polyunsaturated fats reduce harmful LDL cholesterol levels and inflammation, and provide nutrients that your body needs to develop and maintain your cells. Polyunsaturated fats ...

The content of tartaric acid in the finished wine not to be less than 1,500 ppm weight by volume. n/a (d) Grape juice (d) Acidity regulator (d) Good Manufacturing Practice n/a (e) Ice cream mix; Ice ...