METHOD FOR IDENTIFICATION OF LINOLENIC FLAX SEEDS Russian patent published in 2006 - IPC G01N33/03 G01N24/08 

FIELD: fat-and-oil industry, in particular, identification of flax seeds as to belonging thereof to high-linolenic flax sorts.

SUBSTANCE: method involves selecting flax seed samples; measuring temperature thereof and placing seed sample into sensor of pulsed nuclear magnetic resonance analyzer; measuring nuclear magnetic resonance characteristics of oil protons in flax seeds and calculating weighted average of spin time - spin relaxation (T_2st) in milliseconds from formula: where N=3 - number of components in signal of nuclear magnetic resonance oil protons; A_i is amplitude of signal of nuclear magnetic resonance protons of i-component in percentage of total amplitude; T_2i is time of spin-spin relaxation of protons of I component, said time being presented in milliseconds. Flax seeds are considered to refer to high-linolenic seed sorts when T_2st < 1.2·t+83.7.

EFFECT: reduced time for identification of flax seeds, decreased damage to seeds, elimination of complicated sample preparing procedure and avoiding employment of chemical reactants.

2 cl, 1 tbl