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首页> 外文期刊>Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems >Thermal studies of Albizia inopinata crude extract in the presence of cyclodextrin and Aerosil (R) by TG and DSC coupled to the photovisual system
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Thermal studies of Albizia inopinata crude extract in the presence of cyclodextrin and Aerosil (R) by TG and DSC coupled to the photovisual system

机译：TG和DSC结合光​​学系统对环糊精和Aerosil（R）存在下的Albizia inopinata粗提取物的热研究。

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Albizia inopinata (Harms) G.P. LEWIS has been studied for its anti-hypertensive/vasodilater phytopharmaceutical effects. In this work TG and DSC are coupled to a photovisual system and were used to determine the thermal behavior of A. inopinata dried extract prepared with and without stabilizers. The extracts were prepared by percolation of the powdered leaves in an ethanol:water (70:30) solvent system for 72 h and then dried using a spray-dryer technique. Aerosil((R)) 200 (Colloidal silica dioxide) and beta-cyclodextrin were used as stabilizers for the preparation of the dried extracts. TG curves were obtained using a Shimadzu thermobalance, model TGA-50H. DSC curves were obtained with a Shimadzu calorimeter, model DSC-50, coupled to the photovisual system. TG curves for A. inopinata extracts and Albizia-stabilizers exhibited six thermal decomposition stages. DSC curves showed phase transition differences among the samples. The pictures obtained by DSC photovisual showed thermal behavior differences between the products. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 9]
机译：Albizia inopinata（危害）G.P.已对LEWIS的抗高血压/血管扩张药理作用进行了研究。在这项工作中，TG和DSC耦合到一个光学视觉系统，并用于确定用和不用稳定剂制备的A. inopinata干提取物的热行为。提取物的制备方法是：将粉状叶子在乙醇：水（70:30）溶剂系统中渗滤72小时，然后使用喷雾干燥器干燥。 Aero 200 200（胶体二氧化硅）和β-环糊精用作制备干燥提取物的稳定剂。使用Shimadzu热天平，型号TGA-50H获得TG曲线。 DSC曲线是用型号为DSC-50的Shimadzu量热仪与光视觉系统耦合得到的。 A. inopinata提取物和Albizia稳定剂的TG曲线表现出六个热分解阶段。 DSC曲线显示出样品之间的相变差异。通过DSC视觉图像获得的图片显示了产品之间的热行为差异。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：9]

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