A roasted coffee of Coffea arabica var. Laurina a powder of which comprises from 5.0 to 10.0 mg per gram of powder (mg/g) trigonelline and from 3.0 to 8.0 mg/g mono-caffeoylquinic acids (3-caffeoylquinic acid, 4-caffeoylquinic acid and 5-caffeoylquinic acid), the invention also relating to a beverage prepared with such roasted coffee, a method for the preparation and a use of such roasted coffee for the prevention of metabolic syndrome.

A roasted coffee of Coffea arabica var. Laurina a powder of which comprises from 5.0 to 10.0 mg per gram of powder (mg/g) trigonelline and from 3.0 to 8.0 mg/g mono-caffeoylquinic acids (3-caffeoylquinic acid, 4-caffeoylquinic acid and 5-caffeoylquinic acid), the invention also relating to a beverage prepared with such roasted coffee, a method for the preparation and a use of such roasted coffee for the prevention of metabolic syndrome.

A coffee roasting apparatus (100) is disclosed comprising a compartment (110) for holding coffee beans (10); a roasting element (140) for roasting the coffee beans in said compartment; and a controller (130) for controlling the roasting element. The controller is adapted to control the roasting element as a function of a change in the volume of the coffee beans residing in the compartment. A coffee brewing apparatus including such a coffee roasting apparatus and a coffee roasting method are also disclosed.

A coffee roasting apparatus (100) is disclosed comprising a compartment (110) for holding coffee beans (10); a roasting element (140) for roasting the coffee beans in said compartment; and a controller (130) for controlling the roasting element. The controller is adapted to control the roasting element as a function of a change in the volume of the coffee beans residing in the compartment. A coffee brewing apparatus including such a coffee roasting apparatus and a coffee roasting method are also disclosed.

Provided are roasted coffee beans useful for producing a coffee beverage having rich body and taste and suppressed in unpleasant taste. The roasted coffee beans of the present invention have an L value of 10 to 20, a content weight ratio [(B)/(A)] of hydroxyhydroquinone (B) to hydroquinone (A) of 3.5 or less, and a content of chlorogenic acids (C) of 0.3 to 1.5 g relative to 100 g of the roasted coffee beans.

Provided are roasted coffee beans useful for producing a coffee beverage having rich body and taste and suppressed in unpleasant taste. The roasted coffee beans of the present invention have an L value of 10 to 20, a content weight ratio [(B)/(A)] of hydroxyhydroquinone (B) to hydroquinone (A) of 3.5 or less, and a content of chlorogenic acids (C) of 0.3 to 1.5 g relative to 100 g of the roasted coffee beans.

A apparatus (100) for roasting coffee beans is disclosed comprising a compartment (110) for holding coffee beans (10); a roasting element (140) for roasting the coffee beans in said compartment; and a processor (130) comprising a control unit (134) for controlling the roasting element. Wherein, the processor (130) is adapted to determine a weight loss rate of the coffee beans, and the control unit (134) is adapted to control the roasting element as a function of the determined weight loss rate. A coffee machine including such an apparatus and a method for roasting coffee beans are also disclosed.

A apparatus (100) for roasting coffee beans is disclosed comprising a compartment (110) for holding coffee beans (10); a roasting element (140) for roasting the coffee beans in said compartment; and a processor (130) comprising a control unit (134) for controlling the roasting element. Wherein, the processor (130) is adapted to determine a weight loss rate of the coffee beans, and the control unit (134) is adapted to control the roasting element as a function of the determined weight loss rate. A coffee machine including such an apparatus and a method for roasting coffee beans are also disclosed.

A coffee roasting apparatus (100) is disclosed that comprises a compartment (110) for holding coffee beans (10); a roasting element (140) for roasting the coffee beans in said compartment; a controller (130) for controlling the roasting element; and a sensor (120) for monitoring a total amount of VOCs (volatile organic compounds) released by said coffee beans during roasting and providing the controller with an indication of said monitored amount. The controller is adapted to receive an indication of the total weight of the coffee beans in the compartment and control the roasting element as a function of the indication of the monitored total amount and the indication of the total weight, said function defining the total VOC release characteristics of said coffee beans during roasting. A coffee brewing apparatus and coffee roasting method are also disclosed.

A coffee roasting apparatus (100) is disclosed that comprises a compartment (110) for holding coffee beans (10); a roasting element (140) for roasting the coffee beans in said compartment; a controller (130) for controlling the roasting element; and a sensor (120) for monitoring a total amount of VOCs (volatile organic compounds) released by said coffee beans during roasting and providing the controller with an indication of said monitored amount. The controller is adapted to receive an indication of the total weight of the coffee beans in the compartment and control the roasting element as a function of the indication of the monitored total amount and the indication of the total weight, said function defining the total VOC release characteristics of said coffee beans during roasting. A coffee brewing apparatus and coffee roasting method are also disclosed.