PHENOLIC PROFILES, TYROSINASE INHIBITORY, AND ANTIOXIDANT EFFECTS OF GREEN COFFEE, AND TURKISH TRADITIONAL COFFEE

Phenolic Content, Antioxidant Effects and Tyrosinase Inhibitory Activity of Extract of Some Stachys Species from Iran

Background: Given the importance of Stachys genus in Iran and their significant biological activity, we collected three species of this plant: St. aucheri Benth., Stachys benthamiana Boiss and St. inflata Benth. from different regions of Iran. We examined the free radical scavenging potential, total phenol content and tyrosinase inhibitory activity of their methanol, methanol 80% and dichlorome...

The Stabilising and Chelating Effects of Green and Roasted Coffee Extracts

ABSTRACT: Oxidation might be regarded as one of the most important reaction in oils and fats. Prooxidants namely iron and copper intensify and catalyze the oxidation while the chelating agents might retard or delay this process. Citric acid, phosphoric acid, some of phenolic compounds and phospholipids are considered as the compounds that chelate the prooxidant metals and through this mechanism...

"Effects of coffee on the total plasma antioxidant capacity in humans and bioavailability of coffee polyphenols"

Do coffee roasters benefit from high prices of green coffee?

The German coffee industry has repeatedly made the puzzling statement that it would prefer higher prices of green coffee, its main input. Likewise, it supported the maintenance of the coffee tax. In this paper, an oligopoly model with differentiated products is used to illustrate the possibility of profit-raising cost-increases. The relationship between prices and costs of roasted coffee in Ger...

Antioxidant and Antiradical Activity of Coffee.

This review summarizes published information concerning the determination of antioxidant activity (AA) in coffee samples by various methods (ORAC, FRAP, TRAP, TEAC, etc.) in vitro and limited data of antiradical activity of coffee products in vitro and in vivo. Comparison is carried out of the AA of coffee Arabica and coffee Robusta roasted at different temperatures as well as by different roas...