一种汤料混浊剂中起浊成分及其含量的测定研究

Investigation on Clouding Components and Content Determination of a Soup Clouding Agent

采用X射线衍射分析、X射线荧光分析、红外光谱等多种仪器分析方法,对一种进口汤料混浊剂样品的起浊成分进行定性和含量的测定研究。X衍射测定分析发现样品中存在锐钛矿型的二氧化钛(TiO2)的衍射特征峰,为起浊的组分。X射线荧光分析、红外光谱等等分析测定,该样品含有较多量的Ti元素,其灰分的Ti元素含量比例达97.0%,存在Ti-O键,与TiO2标样的红外谱图的匹配度为98.06%,还含有麦芽糊精。TGA热重分析、灰分和水不溶物测定,表明样品的TiO2含量为21%～22%。

The qualitative analysis and content determination of an imported soup clouding agent were investigated by means of X-ray diffraction, X-ray fluorescence （XRF）, fourier transforms infrared （FT-IR） spectroscopy and other instrument analysis methods. The result of X-ray diffraction indicated that diffraction characteristic peaks of anatase TiO2, which was the clouding components, existed in the sample. XRF, FT-IR spectroscopy and other analysis showed the sample contained a multitude of Ti elements, Ti content of the ash was 97.0%, the Ti-O groups existed in the ash. Compared with standard sample TiO2, the matching degree of infrared spectra reached 98.06%, meanwhile, maltodextrin was another component. Thermo gravimetric analysis, combined with measuring the ash and water-insoluble components, indicated the TiO2 content of sample was 21%-22% .