Immobilization of Lipase on microporous and mesoporous materials: studies of the support surfaces

Macario, Anastasia; Katović, A.; Giordano, G.; Forni, L.; Carloni, F.; Filippini, A.; Setti, Leonardo

doi:10.1016/s0167-2991(05)80166-1

Cited by 41 publications

(19 citation statements)

References 18 publications

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“…These acid sites are the only ones with which the enzyme can interact during the adsorption process, as already observed in our previous studies [36]. Then, we can expect that the interactions between enzyme and support synthesized in alkaline media involve the silanol groups of the support surface and the amino-acidic residues of the enzyme by van der Waals (dipole-induced dipole) interactions.…”

Section: Protein Adsorptionsupporting

confidence: 75%

“…Pure silica zeolites are chosen as lipase support due to the high hydrophilic character and strong acid-sites that alumina zeolites show and that may induce some damage to the enzyme, as observed by different authors [33][34][35] and by our previous studies [36]. The self-bonded zeolite pellets are prepared because supports in this form can be easier to handle than that ones in powdered form that, normally, produce in the industrial application, a very high pressure drop.…”

Section: Introductionmentioning

confidence: 99%

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Hydrolysis of Alkyl Ester on Lipase/Silicalite-1 Catalyst

et al. 2007

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Pure silica zeolites have been prepared in powder and pellets form with different surface chemical properties in order to investigate how the binding forces in the lipase enzyme adsorption influence the final conformation of the immobilized enzyme and its catalytic activity. The catalytic activity of the adsorbed lipase have been tested in the alkyl esters hydrolysis reaction. The higher alkyl-esters conversion is observed for the lipase immobilized on the supports prepared in OH -media compared to the fluoride media supports. The obtained results can be explained by the two different non-covalent interactions between the external surface of zeolites and the enzyme.

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Section: Protein Adsorptionsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Hydrolysis of Alkyl Ester on Lipase/Silicalite-1 Catalyst

et al. 2007

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“…146 Stabilized enzymes were also covalently supported onto MWW layers which are forming ITQ-2 zeolites, generating novel biocatalysts. 147 The benefits of the open zeolitic structures, derived from MWW layered precursors, can be exploited in other catalytic fields, more related with electro-or photo-catalysis. For instance, it is important the generation of electron transfer species with high stability and durability.…”

Section: 131mentioning

confidence: 99%

Layered zeolitic materials: an approach to designing versatile functional solids

2014

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“…Moreover, after reaction, the zeolitic supports can be recycled and reused to immobilize additional enzymes. Definitively, these results have opened the possibility of using open zeolitic structures for processes which involve enzymes as catalysts (Scheme 24) [152][153][154][155].…”

Section: Other Processesmentioning

confidence: 99%

Layered Materials with Catalytic Applications: Pillared and Delaminated Zeolites from MWW Precursors

Díaz

2012

ISRN Chemical Engineering

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Delaminated and pillared zeolites are an innovative family of molecular sieves which introduced a different concept inside the synthesis of active catalysts or inorganic supports. These types of materials exhibit an elevated accessibility due to their open structure, characterized by the high external surface area without imposed restrictions controlled by the pore sizes. These open zeolites are conformed by crystalline ordered (pillared zeolites) or disordered (delaminated zeolites) individual layers, exhibiting textural properties which are favorable to carry out catalytic processes in which it is necessary to employ catalysts with completely accessible active sites. The elevated external surface area of these zeolites is profitable to generate more specific organic-inorganic materials, acting in this case as stable inorganic matrixes. The preparation of this open type-zeolites family is based on the modification of, previously synthesized, zeolitic precursors which are preexpanded to obtain the final delaminated or pillared zeolites which exhibit very different physicochemical properties compared with the starting precursors. Along this paper, the most relevant MWW-type high accessible zeolitic materials will be considered. Their nature, characteristics, and reactivity will be shown in the function of the employed synthesis method for their preparation and the postsynthesis treatments carried out, tuning their properties.

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Immobilization of Lipase on microporous and mesoporous materials: studies of the support surfaces

Cited by 41 publications

References 18 publications

Hydrolysis of Alkyl Ester on Lipase/Silicalite-1 Catalyst

Hydrolysis of Alkyl Ester on Lipase/Silicalite-1 Catalyst

Layered zeolitic materials: an approach to designing versatile functional solids

Layered Materials with Catalytic Applications: Pillared and Delaminated Zeolites from MWW Precursors

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