FORMATION OF NEW CRYSTALLINE, ANHYDROUS MONOSODIUM GLUTAMATE BY SOLVENT DEHYDRATION USING ETHANOL

摘要：

Monosodium glutamate (MSG) monohydrate was dehydrated to its anhydrous form in ethanol of different water contents with a differential scanning calorimeter (DSC).The crystal transformation reaction was performed in a pressure pan under isothermal and temperature ramping conditions.The morphology of the newly formed anhydrous MSG crystals was investigated by scanning electron microscopy (SEM) and powder X-ray diffractometry.The anhydrous MSG crystals presented a spiky structure.The apparent dehydration kinetic constants were determined to be 120 and 205 kJ/mol for the isothermal and non-isothermal conditions, respectively.Under the isothermal conditions, the collected data were analyzed by the Avrami equation and subsequently the Arrhenius plots.The data sets from the temperature ramping conditions were analyzed according to Kissinger’s method.The newly obtained anhydrous MSG presented a higher solubilization rate than MSG monohydrate or anhydrous MSG obtained by vacuum drying.

关键词： MSG Dehydration Ethanol Crystal transformation DSC

作者: N.Verhoeven T.L.Neoh T.Furuta C.Yamamoto H.Yoshii

作者单位: Department of Biotechnology,Tottori UniversityKoyama Minami 4-101,Tottori 680-8552,Japan Department of Applied Biological Science,Kagawa University2393,Ikenobe,Miki,Kita,Kagawa 761-0795,Jap Biotechnology,Tottori UniversityKoyama Minami 4-101,Tottori 680-8552,Japan The United Graduate School of Agricultural Sciences,Ehime University3-5-7 Tarumi,Matsuyama,Ehime 790 Department of Applied Biological Science,Kagawa University 2393,Ikenobe,Miki,Kita,Kagawa 761-0795,Ja

会议类型: 国际会议

会议名称: The 7th Asia-Pacific Drying Conference(第七届亚太地区干燥会议 ADC2011)

会议地点: 天津

会议语种:英文

页码: 1-6

在线出版日期: 2011-09-18（万方平台首次上网日期，不代表论文的发表时间）