Novozym 435: the “perfect” lipase immobilized biocatalyst?

Novozym 435 (N435) is a commercially available immobilized lipase produced by Novozymes with its advantages and drawbacks.

Liquid lipase-catalyzed hydrolysis of gac oil for fatty acid production: Optimization using response surface methodology

Fatty acids are valuable products because they have wide industrial applications in the manufacture of detergents, cosmetics, food, and various biomedical applications. In enzyme-catalyzed hydrolysis, the use of immobilized lipase results in high production cost. To address this problem, Eversa Transform lipase, a new and low-cost liquid lipase formulation, was used for the first time in oil hydrolysis with gac oil as a triglyceride source in this study. Response surface methodology was employed to optimize the reaction conditions and establish a reliable mathematical model for predicting hydrolysis yield. A maximal yield of 94.16% was obtained at a water-to-oil molar ratio of 12.79:1, reaction temperature of 38.9 °C, enzyme loading of 13.88%, and reaction time of 8.41 h. Under this optimal reaction condition, Eversa Transform lipase could be reused for up to eight cycles without significant loss in enzyme activity. This study indicates that the use of liquid Eversa Transform lipase in enzyme-catalyzed oil hydrolysis could be a promising and cheap method of fatty acid production. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 2018.

Production of Biodiesel Via Catalytic Processes: A Brief Review

Currently, there is a worldwide concern, not only with the exhaustion of diesel oil, but also with the environmental damages caused by this fuel, from the process of extracting oil to consumption. The emission of the gases from the combustion process of this fuel are harmful to the health of living beings and contribute directly to the worsening of the greenhouse effect. Biodiesel appears in this context as a possible substitute for diesel. Thus, the main objective of this work was to carry out a bibliographical review of the main catalytic processes available in the literature for the production of biodiesel, respectively, the main chemical reactions involved in these processes, being: the esterification and transesterification reaction. Among the catalytic processes, the alkaline, acid and enzymatic catalysis was highlighted. And, among the main raw materials used in the production process are: vegetable oils, animal fats and oils and fats; as economically and environmentally viable alternatives. Still referring to the raw materials, there are the alcohols: methanol and ethanol, which are frequently used. In this way, the most varied catalytic methods present in the literature were presented. For each catalytic process, the work was presented, which developed methodologies for: homogeneous, heterogeneous catalysts, dispersed or immobilized, with the most diverse raw materials, which are currently used or that may be used in the process of obtaining biodiesel in the future. Industrial scale.