Biomimetic polymer-inorganic hybrid microcapsules for yeast alcohol dehydrogenase encapsulation

Zhang, Lei; Jiang, Yanjun; Shi, Jiafu; Li, Jian; Jiang, Zhongyi

doi:10.1016/j.reactfunctpolym.2008.08.007

Cited by 26 publications

(29 citation statements)

References 42 publications

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“…Zhang et al [24] immobilized an alcohol dehydrogenase in a hybrid alginate-calcium carbonate support, and fixed the contact time of the beads with the CaCl 2 solution and gelatin, corroborating the results obtained in the present study.…”

Section: Effect Of Contact Time Of Beads With the Sodium Chloride Solsupporting

confidence: 90%

Synthesis of a hybrid polymer-inorganic biomimetic support incorporating in situ pectinase from Aspergillus niger ATCC 9642

Bustamante-Vargas

Mignoni

Oliveira

et al. 2015

Bioprocess Biosyst Eng

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The hybrid alginate/gelatin/calcium oxalate (AGOCa) support was successfully synthesized through the biomimetic mineralization method for immobilization in situ of a pectinolytic extract from Aspergillus niger ATCC 9642 via entrapment technique. The efficiency of immobilization reached 72.7%. Sodium oxalate buffer (100 mM, pH 5.5) was selected as adjuvant of the immobilization process by allowing the formation of a calcified shell around the calcium alginate capsule, significantly increasing the stability to storage, thermal and recycling of the enzymatic immobilized pectinolytic extract. The pH and temperature for maximum activity were from 5.0 to 6.0 and 60 to 80 °C, respectively. The new hybrid support can be a potential alternative to obtain immobilized pectinases with properties for advantageous industrial applications.

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Section: Effect Of Contact Time Of Beads With the Sodium Chloride Solsupporting

confidence: 90%

Synthesis of a hybrid polymer-inorganic biomimetic support incorporating in situ pectinase from Aspergillus niger ATCC 9642

Bustamante-Vargas

Mignoni

Oliveira

et al. 2015

Bioprocess Biosyst Eng

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“…With unique chemical and physical properties, dendrimer and hyper-branched polymers possessing reactive functional groups, three-dimensional architecture found potential stimulated applications in the various sectors of nanotechnology, supramolecular chemistry, material science, additives, automobile parts, drug delivery, surface coatings, and many more. [1][2][3][4][5][6] In recent years, field of microencapsulation has engrossed many researchers and industrialists as it causes to protect the core material from surrounding environment. Microencapsulation finds potential extensive applications in the agricultural, industrial, engineering, and medical fields such as carbonless copying paper, flame retardants, pharmaceutical applications, foods, catalysis, self-healing materials, phase change materials, and pesticides.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of dendritic 0 G PAMAM-based novel polyurea microcapsules for encapsulation of herbicide and release rate from polymer shell in different environment

Hedaoo

Tatiya

Mahulikar

et al. 2013

Designed Monomers and Polymers

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New sequence of microcapsules with dendritic PAMAM-based novel polyurea as shell wall material containing herbicide as a core moiety has been prepared by interfacial polymerization technique. Dendrimer-based polymeric microcapsules were fabricated with aim to study the effect of different reaction parameters such as surfactant dose, core loading, agitation speed, and amount of solvent on particle size, particle size distribution, and appearance of microcapsules. Prepared microcapsules were characterized by FTIR, thermo gravimetric analysis, particle size analysis, scanning electron microscope, and other microscopic technique. In present investigation, surfactant dose of 2.5% with 5 mL of solvent at 400 rpm was found to be optimum for fabrication of stable new polyurea microcapsules containing 1 g of core. The synthesized microcapsules with optimized parameters were evaluated quantitatively for controlled release study by gas chromatography in different environmental conditions. The highest percent release of core was found in acidic conditions compared to that of basic and least in neutral medium.

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“…Only a few examples using covalent binding are described [9,10]. The support (carrier) used included a synthetic organic polymer, a biopolymer, or an inorganic solid [11][12][13][14]. The major problem with polymer supports is lower pH and thermal stabilities, while inorganic supports (carriers) for immobilization are of great interest because of their thermal stabilities and high mechanical strength, and hence there is immense scope for research in this area [15].…”

mentioning

confidence: 99%

Characterization of Alcohol Dehydrogenase from Permeabilized Brewer's Yeast Cells Immobilized on the Derived Attapulgite Nanofibers

Zhao

Hou

Gong

et al. 2009

Appl Biochem Biotechnol

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Alcohol dehydrogenase (ADH) from permeabilized brewer's yeast was immobilized on derived attapulgite nanofibers via glutaraldehyde covalent binding. The effect of immobilization on ADH activity, optimum temperature and pH, thermal, pH and operational stability, reusability of immobilized ADH, and bioreduction of ethyl 3-oxobutyrate (EOB) to ethyl(S)-3-hydroxybutyrate ((S)-EHB) by the immobilized ADH were investigated. The results show the immobilized ADH retained higher activity over wider ranges of pH and temperature than those of the free. The optimum temperature and pH were 7.5 and 35 degrees C, respectively, and 58% of the original activity was retented after incubation at 35 degrees C for 32 h. More importantly, in bioreduction of EOB mediated by immobilized ADH, the conversion of substrate and enantiomeric excess (ee) of product reached 88% and 99.2%, respectively, within 2 h and retained about 42% of the initial activity after eight cycles.

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Biomimetic polymer-inorganic hybrid microcapsules for yeast alcohol dehydrogenase encapsulation

Cited by 26 publications

References 42 publications

Synthesis of a hybrid polymer-inorganic biomimetic support incorporating in situ pectinase from Aspergillus niger ATCC 9642

Synthesis of a hybrid polymer-inorganic biomimetic support incorporating in situ pectinase from Aspergillus niger ATCC 9642

Fabrication of dendritic 0 G PAMAM-based novel polyurea microcapsules for encapsulation of herbicide and release rate from polymer shell in different environment

Characterization of Alcohol Dehydrogenase from Permeabilized Brewer's Yeast Cells Immobilized on the Derived Attapulgite Nanofibers

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