Results 91 to 100 of about 11,718 (195)

Metabolism and Excretion of Caffeine during Germination of Coffea arabica L [PDF]

open access: yes, 2017
To investigate the physiological role of the purine alkaloids during germination, seeds of Coffea arabica were allowed to germinate under aseptic conditions on agar at 26°C, either in the dark or in the light.
Baumann, Thomas W., Gabriel, Helene
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Make Caffeine Visible: a Fluorescent Caffeine "Traffic Light" Detector [PDF]

open access: yes, 2013
Caffeine has attracted abundant attention due to its extensive existence in beverages and medicines. However, to detect it sensitively and conveniently remains a challenge, especially in resource-limited regions.
Agrawalla, Bikram Keshari   +8 more
core   +1 more source

Comparison of remineralizing efficacy of two novel preparation of arginine and theobromine on white spot lesion - an in vitro SEM analysis

open access: yesClinical and Investigative Orthodontics
Purpose Evaluation of the efficacy of two novel formulations of arginine and theobromine in remineralizing artificial enamel defects using in vitro testing techniques- Microhardness and SEMMaterials and methods Enamel slabs measuring 3 mm by 3 mm by 1.5 ...
Shifo Savio F   +2 more
doaj   +1 more source

Effect of Roasting on the Development of Flavour in Malaysian Cocoa Beans (Theobroma Cacao L.) [PDF]

open access: yes, 1986
Malaysian cocoa beans have been characterised by chocolate manufacturers as lacking strong Cocoa flavour. To have an insight into the flavour problem, research was carried out to see how roasting would affect the chemical and flavour compliments as ...
Ab Aziz, Faridah
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Aerospace medicine and biology: A continuing bibliography with indexes (supplement 339) [PDF]

open access: yes
This bibliography lists 105 reports, articles and other documents introduced into the NASA Scientific and Technical Information System during July 1990.

core   +1 more source

The antimicrobial activity of theobromine against cariogenic microbes: an in vitro pilot study

open access: yesBDJ Open
Objective This pilot study aimed to compare the antimicrobial effect of theobromine, sodium fluoride, and a theobromine-sodium fluoride combination against the following caries-associated bacteria: Streptococcus mutans and Actinomyces naeslundii ...
Ismaeel H. Rafiq   +2 more
doaj   +1 more source

Experimental and Theoretical Studies on Theobromine and Theobromine-Water Complexes

open access: yesAfyon Kocatepe University Journal of Sciences and Engineering, 2018
In this study, the solvent effects on structural, spectroscopic, electronic and thermochemical properties of Theobromine (tbH) were theoretically investigated. The dichloromethane (DCM), dimethylsulfoxide (DMSO) and water (H2O) solvents have been chosen for investigations.
openaire   +3 more sources

New fluorescence spectroscopic method for the simultaneous determination of alkaloids in aqueous extract of green coffee beans

open access: yesChemistry Central Journal, 2018
Background There is no fluorescence spectroscopic method for the determination of trigonelline and theobromine in green coffee beans. Therefore, the objective of this study was to develop a new fluorescence spectroscopic method to determine the alkaloids
Hagos Yisak   +2 more
doaj   +1 more source

Chocolate: Theobromine and Caffeine [PDF]

open access: yesJournal of Chemical Education, 2004
This month's featured molecules include theobromine and caffeine, both methyl-xanthines. Theobromine is a smooth muscle stimulant, while caffeine is predominately a central nervous system stimulant.
openaire   +1 more source

Determinação de metil-xantinas em alimentos por cromatografia líquida de alta eficiência. [PDF]

open access: yes, 2013
bitstream/item/75983/1/ct55-2002 ...
CASTRO, I. M. de, MELLO, J. S. da R. de
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