A highly specific technique for estimating inulin content in natural instant chicory based on the determination of fructose after enzymatic hydrolysis with amyloglucosidase and inulinase by high-performance liquid chromatography with refractometric detection has been developed. Determination of inulin content was carried out by a system for high performance liquid chromatography Agilent 1260 Series with a refractometer, Waters Sugar-Pak column of 10 μm × 6.5 mm × 300 mm: isocratic elution mode (mobile phase - water) with a flow rate of 0.5 ml/min, column temperature - 80 °C, injected sample volume - 10 μl. Inulin content in samples of soluble natural chicory ranges from 4 to 25%. It has been shown that the developed technique can be applied in the quality control of products used for the preparation of soluble natural chicory beverages.
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| http://dx.doi.org/10.24411/0042-8833-2017-00076 | DOI Listing |
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