Application of IR Spectroscopy for Tea Quality Control
LED IR (infrared) minispectrometer LMS-R manufactured by OOO Microsensor Technology (St. Petersburg) was tested on samples of black and green tea from various manufacturers. Experimental results showed the possibility of determining the presence of water in tea samples, while the sensitivity of the method is not worse than 5%. A method of measuring tea moisture directly in a package (in a paper bag) has been proposed, which makes this minispectrometer convenient for conducting rapid analysis both in production and in retail store chains, and in everyday life.