A device for use in a process for roasting coffee beans comprises measuring means (10) for performing measurements of an actual value of particulate matter emission from the coffee beans during a process of roasting the coffee beans, and controlling means (20) coupled to the measuring means (10) for receiving the outcome of the measurements from the measuring means (10), wherein the controlling means (20) are adapted to find a pattern of the particulate matter emission over time on the basis of the outcome of the measurements, to determine an actual roasting degree of the coffee beans on the basis of the pattern, and to determine and set at least one characteristic of the roasting process on the basis of the roasting degree.

A device for use in a process for roasting coffee beans comprises measuring means (10) for performing measurements of an actual value of particulate matter emission from the coffee beans during a process of roasting the coffee beans, and controlling means (20) coupled to the measuring means (10) for receiving the outcome of the measurements from the measuring means (10), wherein the controlling means (20) are adapted to find a pattern of the particulate matter emission over time on the basis of the outcome of the measurements, to determine an actual roasting degree of the coffee beans on the basis of the pattern, and to determine and set at least one characteristic of the roasting process on the basis of the roasting degree.

The present invention relates to a coffee composition with improved aroma and a method of producing a coffee composition wherein two different types of coffee beans are roasted separately.

The present invention relates to a coffee composition with improved aroma and a method of producing a coffee composition wherein two different types of coffee beans are roasted separately.

Coffee beans having an increased flavor component, a method for increasing a flavor component in coffee beans, and a method for evaluating coffee beans are provided. A fatty acid methyl ester content of coffee beans is increased.

Coffee beans having an increased flavor component, a method for increasing a flavor component in coffee beans, and a method for evaluating coffee beans are provided. A fatty acid methyl ester content of coffee beans is increased.

The invention concerns a method for roasting coffee beans with a roasting apparatus (10) said roasting apparatus being positioned in a room and said roasting apparatus comprising: ⋅—a roasting device (1), and ⋅—a smoke treating unit (3) configured to treat the smoke produced in the roasting device (1) and to prevent the dispense of air contaminants in the room.

The invention concerns a method for roasting coffee beans with a roasting apparatus (10) said roasting apparatus being positioned in a room and said roasting apparatus comprising: ⋅—a roasting device (1), and ⋅—a smoke treating unit (3) configured to treat the smoke produced in the roasting device (1) and to prevent the dispense of air contaminants in the room.

A bean roasting system includes a roasting chamber, a blower, a variable diverter and a controller. The roasting chamber, the blower and the variable diverter each is disposed at least partially within a recirculating gas flow path. The blower is configured to provide a flow stream of gas through the recirculating gas flow path. The variable diverter is configured to split the gas flow path into at least two flow paths including a treated flow path and a bypass flow path. The treated flow path includes a series arrangement of a gas heater and a catalytic converter. The variable diverter is configured to control a percentage of a flow stream of gas that is diverted into the bypass flow path. The controller is configured to activate different predetermined operating modes for the bean roasting system by controlling a state of the variable diverter and a state of the heater.

A bean roasting system includes a roasting chamber, a blower, a variable diverter and a controller. The roasting chamber, the blower and the variable diverter each is disposed at least partially within a recirculating gas flow path. The blower is configured to provide a flow stream of gas through the recirculating gas flow path. The variable diverter is configured to split the gas flow path into at least two flow paths including a treated flow path and a bypass flow path. The treated flow path includes a series arrangement of a gas heater and a catalytic converter. The variable diverter is configured to control a percentage of a flow stream of gas that is diverted into the bypass flow path. The controller is configured to activate different predetermined operating modes for the bean roasting system by controlling a state of the variable diverter and a state of the heater.