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Oznur Kose - One of the best experts on this subject based on the ideXlab platform.

  • immobilized candida antarctica lipase catalyzed Alcoholysis of cotton seed oil in a solvent free medium
    Bioresource Technology, 2002
    Co-Authors: Oznur Kose, Melek Tüter, Ayse H Aksoy
    Abstract:

    Abstract The Alcoholysis (transesterification) of the refined cotton seed oil of Turkish origin with primary and secondary alcohols was investigated in the presence of an immobilized enzyme from Candida antarctica , commercially called Novozym 435 in a solvent-free medium. The optimum conditions of the methanolysis were as follows: 30% enzyme based on oil weight; oil/alcohol molar ratio 1:4; temperature: 50 °C and reaction time: 7 h. Maximum methyl esters (ME) yield was 91.5%. At the same conditions cotton seed oil was converted with short-chain primary and secondary alcohols to its corresponding esters with conversions between 72% and 94%. Our results indicated that Alcoholysis products of cotton seed oil could be used as valuable intermediates in oleochemistry.

  • Immobilized Candida antarctica lipase-catalyzed Alcoholysis of cotton seed oil in a solvent-free medium.
    Bioresource technology, 2002
    Co-Authors: Oznur Kose, Melek Tüter, H. Ayşe Aksoy
    Abstract:

    The Alcoholysis (transesterification) of the refined cotton seed oil of Turkish origin with primary and secondary alcohols was investigated in the presence of an immobilized enzyme from Candida antarctica, commercially called Novozym 435 in a solvent-free medium. The optimum conditions of the methanolysis were as follows: 30% enzyme based on oil weight; oil/alcohol molar ratio 1:4; temperature: 50 degrees C and reaction time: 7 h. Maximum methyl esters (ME) yield was 91.5%. At the same conditions cotton seed oil was converted with short-chain primary and secondary alcohols to its corresponding esters with conversions between 72% and 94%. Our results indicated that Alcoholysis products of cotton seed oil could be used as valuable intermediates in oleochemistry.

Ayse H Aksoy - One of the best experts on this subject based on the ideXlab platform.

  • immobilized candida antarctica lipase catalyzed Alcoholysis of cotton seed oil in a solvent free medium
    Bioresource Technology, 2002
    Co-Authors: Oznur Kose, Melek Tüter, Ayse H Aksoy
    Abstract:

    Abstract The Alcoholysis (transesterification) of the refined cotton seed oil of Turkish origin with primary and secondary alcohols was investigated in the presence of an immobilized enzyme from Candida antarctica , commercially called Novozym 435 in a solvent-free medium. The optimum conditions of the methanolysis were as follows: 30% enzyme based on oil weight; oil/alcohol molar ratio 1:4; temperature: 50 °C and reaction time: 7 h. Maximum methyl esters (ME) yield was 91.5%. At the same conditions cotton seed oil was converted with short-chain primary and secondary alcohols to its corresponding esters with conversions between 72% and 94%. Our results indicated that Alcoholysis products of cotton seed oil could be used as valuable intermediates in oleochemistry.

H. Ayşe Aksoy - One of the best experts on this subject based on the ideXlab platform.

  • Immobilized Candida antarctica lipase-catalyzed Alcoholysis of cotton seed oil in a solvent-free medium.
    Bioresource technology, 2002
    Co-Authors: Oznur Kose, Melek Tüter, H. Ayşe Aksoy
    Abstract:

    The Alcoholysis (transesterification) of the refined cotton seed oil of Turkish origin with primary and secondary alcohols was investigated in the presence of an immobilized enzyme from Candida antarctica, commercially called Novozym 435 in a solvent-free medium. The optimum conditions of the methanolysis were as follows: 30% enzyme based on oil weight; oil/alcohol molar ratio 1:4; temperature: 50 degrees C and reaction time: 7 h. Maximum methyl esters (ME) yield was 91.5%. At the same conditions cotton seed oil was converted with short-chain primary and secondary alcohols to its corresponding esters with conversions between 72% and 94%. Our results indicated that Alcoholysis products of cotton seed oil could be used as valuable intermediates in oleochemistry.

Melek Tüter - One of the best experts on this subject based on the ideXlab platform.

  • immobilized candida antarctica lipase catalyzed Alcoholysis of cotton seed oil in a solvent free medium
    Bioresource Technology, 2002
    Co-Authors: Oznur Kose, Melek Tüter, Ayse H Aksoy
    Abstract:

    Abstract The Alcoholysis (transesterification) of the refined cotton seed oil of Turkish origin with primary and secondary alcohols was investigated in the presence of an immobilized enzyme from Candida antarctica , commercially called Novozym 435 in a solvent-free medium. The optimum conditions of the methanolysis were as follows: 30% enzyme based on oil weight; oil/alcohol molar ratio 1:4; temperature: 50 °C and reaction time: 7 h. Maximum methyl esters (ME) yield was 91.5%. At the same conditions cotton seed oil was converted with short-chain primary and secondary alcohols to its corresponding esters with conversions between 72% and 94%. Our results indicated that Alcoholysis products of cotton seed oil could be used as valuable intermediates in oleochemistry.

  • Immobilized Candida antarctica lipase-catalyzed Alcoholysis of cotton seed oil in a solvent-free medium.
    Bioresource technology, 2002
    Co-Authors: Oznur Kose, Melek Tüter, H. Ayşe Aksoy
    Abstract:

    The Alcoholysis (transesterification) of the refined cotton seed oil of Turkish origin with primary and secondary alcohols was investigated in the presence of an immobilized enzyme from Candida antarctica, commercially called Novozym 435 in a solvent-free medium. The optimum conditions of the methanolysis were as follows: 30% enzyme based on oil weight; oil/alcohol molar ratio 1:4; temperature: 50 degrees C and reaction time: 7 h. Maximum methyl esters (ME) yield was 91.5%. At the same conditions cotton seed oil was converted with short-chain primary and secondary alcohols to its corresponding esters with conversions between 72% and 94%. Our results indicated that Alcoholysis products of cotton seed oil could be used as valuable intermediates in oleochemistry.

Ulf Schuchardt - One of the best experts on this subject based on the ideXlab platform.

  • transesterification of soybean oil catalyzed by sulfated zirconia
    Bioresource Technology, 2008
    Co-Authors: Camila Martins Garcia, Sergio Teixeira, Leticia Ledo Marciniuk, Ulf Schuchardt
    Abstract:

    Abstract Two sulfated zirconias were synthesized and characterized by X-ray diffraction and infrared spectroscopy. They were used as catalysts in the Alcoholysis of soybean oil and in the esterification of oleic acid. Using sulfated zirconia prepared by the solvent-free method (S–ZrO 2 ) as catalyst, the Alcoholysis conversions of soybean oil under optimized conditions (120 °C, 1 h and 5 wt% of catalyst) were 98.6% (methanolysis) and 92% (ethanolysis), respectively. The esterification of oleic acid with methanol was complete after 2 h. Zirconia sulfated by standard methods (SZ) had low activity in the methanolysis of soybean oil (conversion of 8.5%) and conventional zirconia (NS) was inactive for methanolysis under the conditions optimized for S–ZrO 2 .

  • transesterification of soybean oil catalyzed by sulfated zirconia
    Bioresource Technology, 2008
    Co-Authors: Camila Martins Garcia, Sergio Teixeira, Leticia Ledo Marciniuk, Ulf Schuchardt
    Abstract:

    Two sulfated zirconias were synthesized and characterized by X-ray diffraction and infrared spectroscopy. They were used as catalysts in the Alcoholysis of soybean oil and in the esterification of oleic acid. Using sulfated zirconia prepared by the solvent-free method (S-ZrO(2)) as catalyst, the Alcoholysis conversions of soybean oil under optimized conditions (120 degrees C, 1h and 5wt% of catalyst) were 98.6% (methanolysis) and 92% (ethanolysis), respectively. The esterification of oleic acid with methanol was complete after 2h. Zirconia sulfated by standard methods (SZ) had low activity in the methanolysis of soybean oil (conversion of 8.5%) and conventional zirconia (NS) was inactive for methanolysis under the conditions optimized for S-ZrO(2).