Accurate Determination of Moisture Content in Flavor Microcapsules Using Headspace Gas Chromatography
Xueyan Liu1, Chuxing Zhu2, Kang Yu1
1School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China.
Abstract:
This study demonstrates an accurate method for determining the moisture content in flavor microcapsules using headspace gas chromatography. The method involves measuring the gas chromatography signals of water from vapor in a headspace vial containing flavor microcapsules at a temperature of 125 °C. The measurements were recorded over four headspace extractions, from which the moisture content in the microcapsule samples was extrapolated via simple vapor-phase calibration. The results revealed that the proposed method demonstrated good precision (a relative standard deviation of <3.11%) and accuracy. The proposed method is accurate, highly sensitive, automated, and suitable for testing the moisture content of flavor microcapsules and related products.
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