Liha töötlemine
and Alocilja 2003). U.S.) has been developed for on-line mea-
surements of moisture and fat content in
ground meat. There exists also an on-line
Microwave Spectrometry
sensor for measuring the fat-to-lean ratio in
Microwaves include waves with wavelengths pork middles (Keam Holden Ltd., New
from 3m to 3mm. The corresponding Zealand).
frequency range extends from 100MHz
to 1mmGHz (Kent 2001). In the electromag-
Near Infrared Spectroscopy
netic spectrum, microwaves are located
between radio waves at low frequencies and Near infrared (NIR) spectroscopy is a tech-
infrared at higher frequencies (Fig. 25.1). nique that uses a portion of the electromag-
annaabi.ee 
