Low-temperature electrolytic coloration and spectral properties of sucrose crystals

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• 作者：Hongen Gu^a ; ^{jthgu@163.com} ; Pin Tian^a ; Meili Guo^b ; Yutong Li^a ; Xiaoqing Hao^a
• 关键词：Sucrose crystal ; Electrolytic coloration ; Radical ; Optical absorption ; Maillard reaction
• 刊名：Spectrochimica Acta Part A ; Molecular and Biomolecular Spectroscopy
• 出版年：2012
• 期刊代码：99_13861425
• 类别：ch
• 出版时间：June, 2012
• 卷：91
• 期：Complete
• 页码：269-271
• 文件大小：174 K

摘要

Sucrose crystals are colored electrolytically at low temperatures and various voltages by using a pointed cathode and a flat anode. Caramels, carbonyl compounds, glycosylamines and free radicals are produced in colored sucrose crystals. No obvious characteristic absorption band in UV and visible wavelength regions is observed in absorption spectrum of uncolored sucrose crystal. Intense characteristic absorption bands of glycosylamines, carbonyl compounds and caramels are observed in absorption spectra of colored sucrose crystals. Production of caramels, carbonyl compounds, glycosylamines and free radicals are explained. Current-time curve for electrolytic coloration of sucrose crystal and its relationship with electrolytic coloration process are given.