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Pseudomonas fluorescens lipase immobilization on polysiloxane-polyvinyl alcohol composite chemically modified with epichlorohydrin

SANTOS, J. C.; PAULA, A. V.; NUNES, G. F. M.; CASTRO, H. F. de (ELSEVIER SCIENCE BV, 2008)

The technique based on sol-gel approach was used to generate silica matrices derivatives by hydrolysis of silane compounds. The present work evaluates a hybrid matrix obtained with tetraethoxysilane (TEOS) and polyvinyl ...

Covalent attachment of Candida rugosa lipase on chemically modified hybrid matrix of polysiloxane-polyvinyl alcohol with different activating compounds

SANTOS, Julio C.; MIJONE, Patricia D.; NUNES, Gisele F. M.; PEREZ, Victor H.; CASTRO, Heizir F. de (ELSEVIER SCIENCE BV, 2008)

Candida rugosa lipase was immobilized by covalent binding on hybrid matrix of polysiloxane-polyvinyl alcohol chemically modified with different activating agents as glutaraldehyde, sodium metaperiodate and carbonyldiimidazole. ...

Morphological and mechanical properties of hybrid matrices of polysiloxane-polyvinyl alcohol prepared by sol-gel technique and their potential for immobilizing enzyme

SANTOS, Julio C.; PAULA, Ariela V.; ROCHA, Claudia G. F.; NUNES, Gisele F. M.; CASTRO, Heizir F. de (ELSEVIER SCIENCE BV, 2008)

Hybrid matrices of polysiloxane-polyvinyl alcohol (POS-PVA) were prepared by sol-gel technique using different concentrations of the organic component (polyvinyl alcohol, PVA) in the synthesis medium. The goal was to prepare ...

Transesterification of Palm Oil Catalyzed by Pseudomonas fluorescens Lipase in a Packed-Bed Reactor

Dors, Gisanara; Freitas, Larissa; Mendes, Adriano A.; Furigo, Agenor, Jr.; de Castro, Heizir F. (AMER CHEMICAL SOCWASHINGTON, 2013-08-02)

Transesterification of palm oil with ethanol catalyzed by Pseudomonas fluorescens lipase immobilized on epoxy-polysiloxane-polyvinyl alcohol composite (epoxy-SiO2-PVA) was performed in a continuous packed-bed reactor (PBR). ...

Evaluation of the catalytic properties of Burkholderia cepacia lipase immobilized on non-commercial matrices to be used in biodiesel synthesis from different feedstocks

ROS, Patricia C. M. Da; SILVA, Guilherme A. M.; MENDES, Adriano A.; SANTOS, Julio C.; CASTRO, Heizir F. de (ELSEVIER SCI LTD, 2010)

The objective of this work was to produce an immobilized form of lipase from Burkholderia cepacia (lipase PS) with advantageous catalytic properties and stability to be used in the ethanolysis of different feedstocks, ...

Interesterification of milkfat and soybean oil blends catalyzed by immobilized Rhizopus oryzae lipase

PAULA, Ariela V.; NUNES, Gisele F. M.; FREITAS, Larissa; CASTRO, Heizir F. de; SANTOS, Julio C. (ELSEVIER SCIENCE BV, 2010)

Milkfat (MF)/soybean oil (SBO) blends ranging from 50% to 100% of milkfat (w/w) were enzymatically interesterified with a sn-1,3 specific lipase from Rhizopus oryzae immobilized on polysiloxane-polyvinyl alcohol matrix, ...

Assessing the reaction conditions to mediate the milkfat-soybean oil enzymatic interesterification

Universidade Estadual Paulista (Unesp); Centro Federal de Educação Tecnológica de Minas Gerais (CEFET/MG); Universidade de São Paulo (USP) (2016-01-01)

A food grade lipase from Rhizopus oryzae immobilized on a hybrid polysiloxane-polyvinyl alcohol matrix (SiO2-PVA) was used as the biocatalyst to mediate the interesterification reactions of a blend containing 65% milkfat ...

Screening of Food Grade Lipases to be Used in Esterification and Interesterification Reactions of Industrial Interest

PAULA, Ariela Veloso de; NUNES, Gisele Fatima Morais; SILVA, Josiane de Lourdes; CASTRO, Heizir Ferreira de; SANTOS, Julio Cesar dos (HUMANA PRESS INC, 2010)

Seven food grade commercially available lipases were immobilized by covalent binding on polysiloxane-polyvinyl alcohol (POS-PVA) hybrid composite and screened to mediate reactions of industrial interest. The synthesis of ...

Optimization of the Enzymatic Interesterification of Milk Fat and Canola Oil Blends Using Immobilized Rhizopus oryzae Lipase by Response Surface Methodology

NUNES, Gisele Fatima Morais; PAULA, Ariela Veloso de; CASTRO, Heizir Ferreira de; SANTOS, Julio Cesar dos (FACULTY FOOD TECHNOLOGY BIOTECHNOLOGY, 2011)

Blends of milk fat and canola oil (MF:CNO) were enzymatically interesterified (EIE) by Rhizopus oryzne lipase immobilized on polysiloxane-polyvinyl alcohol (SiO(2)-PVA) composite, in a solvent-free system. A central composite ...

Continuous enzymatic interesterification of milkfat with soybean oil produces a highly spreadable product rich in polyunsaturated fatty acids

Universidade Estadual Paulista (Unesp); Universidade de São Paulo (USP); University of Lisbon (Wiley-Blackwell, 2015-05-01)

The aim of this study was to tune the physical properties of milkfat by enzymatic interesterification with soybean oil in a continuous fluidized bed reactor (FBR) to obtain healthy interesterified fat blends having suitable ...