METHOD OF IDENTIFICATION OF THE CEYLON, CHINESE, INDONESIAN AND VIETNAMESE CINNAMON Russian patent published in 2018 - IPC G01N33/02 

FIELD: chemistry.

SUBSTANCE: invention relates to the field of analytical chemistry, namely to methods for identifying Ceylon, Chinese, Indonesian and Vietnamese cinnamon. To do this, samples of cinnamon are analyzed by isotope mass spectrometry, while the isotopic composition of carbon (δ¹³C), nitrogen (δ¹⁵N) and oxygen (δ¹⁸O). Obtained values of the isotope composition of carbon, nitrogen and oxygen are substituted into the functions F1–F4 previously calculated using the discriminant analysis, characterizing the form of cinnamon: the identification of cinnamon is carried out by selecting the maximum value of the discriminant function. F1 "Ceylon" = -2263.68-126.18×δ¹³C+2.23×δ¹⁵N+33.42×δ¹⁸O; F2 "Chinese" = -1978.64-104.82×δ¹³C-7.49×δ¹⁵N+48.25×δ¹⁸O; F3 "Vietnamese" = -2150.03-112.69×δ¹³C-14.01×δ¹⁵N+45.44×δ¹⁸O; F4 "Indonesian" = -2182.14-118.27×δ¹³C-10.14×δ¹⁵N+40.47×δ¹⁸O.

EFFECT: invention makes it possible to identify four types of cinnamon with a significant reduction in the duration of the assay with 95 % confidence level.

1 cl, 5 tbl, 1 ex