Food processing apparatus

1. A food processing apparatus for use with a near-infrared light source and a sensor, the food processing apparatus comprising:

a food processing chamber configured to receive a food stuff;

a channel formed at a base of the food processing chamber;

a food processing unit configured to process the food stuff and to generate a flow of the food stuff in the food processing chamber, such that at least a portion of the food stuff flows through the channel during operation; and

an optical component configured to reflect near-infrared light emitted from the near-infrared light source through the channel towards the sensor, wherein the optical component is arranged at a first side wall of the channel.

2. The food processing apparatus according to claim 1 , wherein the channel is formed by a recess at the base of the food processing chamber.

3. The food processing apparatus according to claim 1 , further comprising:

a protective element arranged at a second side wall of the channel, wherein the second side wall is opposite to the first side wall and a position of the protective element corresponds to a position of the optical component at the first side wall.

4. The food processing apparatus according to claim 3 , wherein the protective element and the optical component are formed as a single integral unit.

5. The food processing apparatus according to claim 3 , wherein the optical component is a first optical component, and the food processing apparatus further comprises a second optical component, wherein the second optical component is arranged at the second side wall of the channel, and the first side wall of the channel is configured such that incoming light from the near-infrared light source is reflected at the first optical component towards the second optical component, and incoming light from the second optical component is reflected towards the sensor.

6. The food processing apparatus according to claim 1 , wherein the channel has a length and a cross-sectional area that increases along the length in a direction along the flow generated by the food processing unit during operation.

7. The food processing apparatus according to claim 1 , wherein the food processing unit comprises a shaft connected to a motor and a cutting element.

8. The food processing apparatus according to claim 1 , wherein the food processing unit comprises a mounting unit configured to form the channel, and wherein the optical component is arranged at the mounting unit.

9. The food processing apparatus according to claim 1 , wherein the optical component comprises a mirror.

10. The food processing apparatus according to claim 1 , wherein the optical component comprises a protective layer.

11. The food processing apparatus according to claim 10 , wherein the protective layer comprises a hard glass.

12. A system comprising the food processing apparatus according to claim 1 , the system further comprising:

the near-infrared light source configured to emit the near-infrared light;

the sensor configured to measure reflected near-infrared light spectrum; and

a control unit configured to determine an amount of at least one type of macronutrient in the food stuff, based on the reflected near-infrared light spectrum.

13. The system according to claim 12 , further comprising a base unit onto which the food processing chamber of the food processing apparatus is removably mounted, wherein the near-infrared light source and the sensor are integrated at the base unit.

14. The system according to claim 12 , further comprising a stirring unit, wherein the near-infrared light source and the sensor are integrated at the stirring unit, and wherein the stirring unit further comprises a light guiding portion configured to guide light from the near-infrared light source to the food stuff received in the food processing chamber, and to guide reflected light to the sensor.

15. The food processing apparatus according to claim 1 , wherein the channel is formed by a portion of an inner surface of the food processing chamber and a protruding portion extending from the base of the food processing chamber.

16. The food processing apparatus according to claim 15 , wherein the protruding portion comprises the first side wall of the channel on which the optical component is arranged.

17. The food processing apparatus according to claim 15 , wherein the protruding portion has a curved shape that corresponds to a shape of the portion of the inner surface of the food processing chamber.