The invention discloses a measuring method of
pectin content in tobaccos and tobacco products, belonging to the technical field of tobacco analysis detection. The measuring method of the
pectin content in tobaccos and tobacco products comprises the following steps: (1), adding acidic
alcohol liquor into a tobacco sample, then, heating and refluxing, carrying out
solid-liquid separation to obtain filtrate and filter residues, and making up to volume after cooling the filtrate to obtain liquor a; (2), adding
acetic acid /
sodium acetate buffer liquor and
pectinase liquor into the filter residues, placing in a water bath for enzymolysis, carrying out suction
filtration, and making up to volume to obtain liquor b; (3), getting a certain amount of liquor a, adding the
acetic acid /
sodium acetate buffer liquor and the
pectinase liquor, placing in the water bath for enzymolysis, carrying out suction
filtration, transferring the filtrate to a
volumetric flask, adding a certain amount of liquor b, making up to volume to obtain to-be-measured liquor; and (4), enabling the to-be-measured liquor to pass through a 0.45-micron filter membrane and then carrying out
ion chromatography analysis. The
pectin content is calculated in terms of content of
lactobionic acid. The measuring method disclosed by the invention is simple to operate, good in
repeatability and high in
recovery rate, and capable of satisfying batch measurement requirement of pectin content in the tobaccos and the tobacco products.