پديد آورنده :
جعفري ولداني، مريم
عنوان :
توليد انتخابي استر قندي به عنوان سورفاكتانت با استفاده از اسيد لينولئيك مزدوج توليد شده از روغن كرچك به طريق شيميايي و ارزيابي ويژگيهاي آن
گرايش تحصيلي :
علوم و صنايع غذايي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
هفده،148ص.: مصور،جدول،نمودار
يادداشت :
ص.ع..به فارسي و انگليسي
استاد راهنما :
مهدي كديور
استاد مشاور :
اميرحسين گلي، مهران غياثي
توصيفگر ها :
سورفاكتانت غير يوني , كانديدا رگوزا , بهينه سازي
تاريخ نمايه سازي :
9/10/92
استاد داور :
محمدعلي سحري، محمد انتظاري، صبيحه سليمانيان زاد
كد ايرانداك :
ID591 دكتري
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
The Selective Production and Evaluation of Sugar Ester as a Surfactant Using Conjugated Linoleic Acid CLA Produced Chemically from Castor Oil Maryam Jafari Veldani mjafari@ag iut ac ir Date of Submission October 13 2013 Department of Food Science and Technology College of Agriculture Isfahan University of Technology Isfahan 84156 83111 Iran Supervisor Mahdi Kadivar kadivar@cc iut ac ir Advisor Sayed Amir Hossein Goli amirgoli@cc iut ac ir Advisor Mehran Ghiaci mghiaci@cc iut ac ir Department Graduate Program coordinator Jahangir Khajehali Department of Food Science and Technology College of Agriculture Isfahan University of Technology Isfahan 84156 83111 Iran Department of chemistry Isfahan University of Technology Isfahan 84156 83111 Iran Abstract A novel sugar ester using 9 cis 11 trans isomer of conjugated linoleic acid CLA was produced as a bioactive surfactant In the first part of study conjugated linoleic acid mixture of all isomers but particularly 9 cis 11 trans one was produced from castor oil and process optimization was done using response surface methodology RSM The temperature 50 C catalyst amount 1 8 g and reaction time 5 25 h were found to be the optimum points to achieve the maximum yield of 9c 11t 18 2 54 4 In the second part 9c 11t 18 2 isomer was separated from other isomers in an organic solvent free system using lipase extracted from Candida rugosa and the effects of synthesis parameters were evaluated and optimized The optimum synthesis conditions were obtained to be as reaction time 23 12 h temperature 32 65 C enzyme amount 135 40U molar ratio of CLA oil to L menthol at 1 1 7 and pH at 7 7 the highest purity of 9c 11t CLA in this optimum point was 82 5 At the final part after determination of suitable solvent sugar and enzyme experimental operating conditions were optimized to maximize production of fructose monoester The temperature 49 1 C 123 7 mg of lipase TL IM CLA to fructose ratio 1 1 68 13 57 mg molecular sieve and 30 32 h were found to be the optimum points to achieve the maximum yield of sugar monoester 6 5 mg ml After purification and determination of several active functional properties of the monoester it was found that this compound had suitable and acceptable properties that can further be studied as a bioactive surfactant for application in different food products Key Words Non ionic surfactants Sugar monoester Castor oil Candida rugosa Optimization PDF created with pdfFactory trial version www pdffactory com
استاد راهنما :
مهدي كديور
استاد مشاور :
اميرحسين گلي، مهران غياثي
استاد داور :
محمدعلي سحري، محمد انتظاري، صبيحه سليمانيان زاد
