Murexide reaction of caffeine using nitric acid.

Caffeine decreases exhaled nitric oxide.

BACKGROUND Caffeine is known to inhibit phosphodiesterases, to mobilise intracellular calcium, and to act as an antagonist at adenosine receptors, all of which can potentially alter nitric oxide (NO) production. It was therefore hypothesised that caffeine may alter exhaled NO (eNO) levels. METHODS In a randomised, single blind, crossover manner, 12 normal subjects consumed either (1) coffee a...

Photoluminescence quantitative analysis of Gallic acid and Caffeine in green tea using multi-way chemometric approaches

Green tea is considered as a dietary source of antioxidant nutrients, which acts upon human health. Green tea leaves contain three main components in the form of simple hydroxy benzoic acids such as gallic acid, propyl gallate and xanthic bases (caffeine), have been reported to prevent or delay a number of degenerative diseases and act mainly upon the central nervous system and stimulating wake...

synthesis of heterocyclic esters of caffeic acid using mitsunobu reaction

Spectrophotometric Investigation on the Kinetics of Decomposit ion of Murexide in Acid Solutions

den sind, um andere, offenbar auch leichter wieder abtrennbare Proteine zu binden. C H A R G A F F und sein Arbeitskreis2 '12 haben bei der Fraktionierung von DN-Histonen mit NaCl-Lösung ansteigender Konzentration DNS-Fraktionen von unterschiedlicher Zusammensetzung und unterschiedlichem Bindungsvermögen erhalten. Die von uns gewonnenen Beobachtungen führen zu dem gleichen Ergebnis. Herrn Direk...

photoluminescence quantitative analysis of gallic acid and caffeine in green tea using multi-way chemometric approaches

green tea is considered as a dietary source of antioxidant nutrients, which acts upon human health. green tea leaves contain three main components in the form of simple hydroxy benzoic acids such as gallic acid, propyl gallate and xanthic bases (caffeine), have been reported to prevent or delay a number of degenerative diseases and act mainly upon the central nervous system and stimulating wake...