Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/15140
Title: <span style="font-size:11.0pt;font-family: "Times New Roman";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: Mangal;mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language: HI" lang="EN-GB">Experimental and modeling studies on extraction of amyrins from latex of mandar (<i style="mso-bidi-font-style:normal">Calotropis gigantea</i><span style="font-size:11.0pt;font-family:"Times New Roman";mso-fareast-font-family: "Times New Roman";mso-bidi-font-family:Arial;mso-ansi-language:EN-GB; mso-fareast-language:EN-US;mso-bidi-language:HI;mso-bidi-font-style:italic" lang="EN-GB">)</span></span>
Authors: Wagh, S J
Gujar, J G
Gaikar, V G
Keywords: <span style="font-size:9.0pt;font-family: Symbol;mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:Mangal;mso-ansi-language: EN-GB;mso-fareast-language:EN-US;mso-bidi-language:HI;mso-char-type:symbol; mso-symbol-font-family:Symbol" lang="EN-GB"><img src='/image/spc_char/alpha.gif' border=0> <span style="font-size:9.0pt;font-family: "Times New Roman";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: Mangal;mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language: HI" lang="EN-GB">-Amyrin</span></span>
Activation energy
<span style="font-size:9.0pt;font-family: Symbol;mso-ascii-font-family:"Times New Roman";mso-fareast-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:Mangal;mso-ansi-language: EN-GB;mso-fareast-language:EN-US;mso-bidi-language:HI;mso-char-type:symbol; mso-symbol-font-family:Symbol" lang="EN-GB"><img src='/image/spc_char/beta.gif' border=0><span style="font-size:9.0pt;font-family: "Times New Roman";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: Mangal;mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language: HI" lang="EN-GB">-Amyrin</span></span>
<i style="mso-bidi-font-style:normal"><span style="font-size:9.0pt;font-family:"Times New Roman";mso-fareast-font-family: "Times New Roman";mso-bidi-font-family:Mangal;mso-ansi-language:EN-GB; mso-fareast-language:EN-US;mso-bidi-language:HI;mso-bidi-font-weight:bold" lang="EN-GB">Calotropis gigantean</span></i>
Latex
Mandar
Issue Date: Nov-2012
Publisher: NISCAIR-CSIR, India
Abstract: The effect of various process parameters, such as solvent, temperature, speed of agitation, and solid loading, on the percentage extraction of <img src='/image/spc_char/alpha.gif'border=0>-amyrin and <img src='/image/spc_char/beta.gif' border=0>-amyrin from the latex of <i style="mso-bidi-font-style:normal">Calotropis gigantea</i> has been studied. Extraction of <img src='/image/spc_char/alpha.gif' border=0>-amyrin and <img src='/image/spc_char/beta.gif' border=0>-amyrin is performed with different solvents such as methanol, ethanol, propanol, and chloroform. Methanol is found to be the best solvent for both <img src='/image/spc_char/alpha.gif' border=0>-amyrin and <img src='/image/spc_char/beta.gif' border=0>-amyrin. As the temperature of the extraction increases, easy release of amyrin takes place, because of destruction of cellular structure of the matrix. The percentage extraction increases with the increase in speed of agitation. Assuming the flat geometry of the particles, the process has been modeled and the results are compared with experimental data at different experimental conditions. The values of energy of activation are obtained as 40.64 kJ/mol for alpha amyrin and 26.96 kJ/mol for beta amyrin. </span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
Description: 427-433
URI: http://hdl.handle.net/123456789/15140
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.19(6) [November 2012]

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