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García-Molina G, Peters E, Palmeri R, Awoke Y, Márquez-Álvarez C, Blanco RM. Enzymatic synthesis of Hydroxytyrosol from Oleuropein for valorization of an agricultural waste. Bioengineered 2024; 15:2396647. [PMID: 39235136 DOI: 10.1080/21655979.2024.2396647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 07/11/2024] [Accepted: 07/23/2024] [Indexed: 09/06/2024] Open
Abstract
Oleuropein (OP) is an appreciated compound present not only in fruits but also in leaves of olive trees, which can be transformed into hydroxytyrosol (HT), a substance with high antioxidant activity. In this work, the transformation of an agricultural residue containing OP (olive leaves or wastewater from mills) to the high added value compound HT is accomplished through different enzymatic strategies. Different enzymes were used, immobilized on various supports by diverse binding forces: beta-glucosidase encapsulated in siliceous material, esterases and lipases immobilized on hydrophobic supports (octyl-functionalized amorphous silica and periodic mesoporous organosilica), and esterase immobilized on amine-functionalized ordered mesoporous silica. All these biocatalysts were tested for oleuropein hydrolysis through two different reaction approaches: a) split of glucosidic bond catalyzed by beta-glucosidase (β-glu), followed by hydrolysis of the aglycon and further ester hydrolysis. 5 mg·mL-1 of β-glu fully hydrolyzed 5 mM OP at pH 7 and 50°C in 7 days, and further enzymatic hydrolysis of the aglycon yielded near to 0.5 mM HT in the best conditions tested. b) via direct hydrolysis of the ester bond to produce hydroxytyrosol in a one-step reaction using esterases or lipases. The latter reaction pathway catalyzed by lipase from Penicillium camemberti immobilized on octyl-silica (4 mg·mL-1) at 35°C and pH 6 directly produced 6.8 mM HT (1 mg·mL-1), transforming in 12 days near to 30% of the initial 25 mM OP from a commercial olive leaves extract.
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Affiliation(s)
| | - Eduard Peters
- CSIC, Instituto de Catalisis y Petroleoquimica, Madrid, Spain
| | - Rosa Palmeri
- Di3A, Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, Catania, Italy
| | - Yaregal Awoke
- Department of Chemistry, Addis Ababa University, Addis Ababa, Ethiopia
| | | | - Rosa M Blanco
- CSIC, Instituto de Catalisis y Petroleoquimica, Madrid, Spain
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IŞIK C. An Alternative Approach to Plastic Recycling: Fabrication and Characterization of rPET/CA Nanofiber Carriers to Enhance Porcine Pancreatic Lipase Stability Properties. ACS OMEGA 2024; 9:31313-31327. [PMID: 39072091 PMCID: PMC11270705 DOI: 10.1021/acsomega.3c07227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 01/18/2024] [Accepted: 02/01/2024] [Indexed: 07/30/2024]
Abstract
In response to the increasing demand for sustainable technologies, this study presents a novel approach to plastic recycling. In this study, a method was presented to produce nanofiber carriers by electrospinning using recycled poly(ethylene terephthalate) (rPET) obtained from wastewater bottles and cellulose acetate (CA). These carriers serve as a platform for immobilized porcine pancreatic lipase (PPL), aiming to enhance its stability. The production parameters for the rPET/CA nanofibers were found to be an rPET concentration of 15% (v/v), a CA concentration of 6% (v/v), an electrical voltage of 13 kV, a needle-collector distance of 18 cm, and an injection speed of 0.1 mL/h. The nanofiber structure and morphology were assessed by using attenuated total reflectance-infrared Fourier transform infrared (ATR-FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) analyses. Then, PPL was immobilized onto the nanofibers through adsorption and cross-linking methods. The optimum temperature for free PPL was determined to be 30 °C, and the optimum temperature for PPL immobilized on rPET/CA was determined to be 40 °C. It was observed that, especially under acidic conditions, after the immobilization process, PPL immobilized rPET/CA nanofibers became more resistant to pH changes than free PLL. Furthermore, the immobilized PPL exhibited improved pH stability, reusability, and thermal stability compared to its free counterpart. This innovative approach not only contributes to plastic waste reduction but also opens new avenues for enzyme immobilization with potential applications in biocatalysis and wastewater treatment.
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Affiliation(s)
- Ceyhun IŞIK
- Faculty of Science, Chemistry
Department, Muğla Sıtkı
Koçman University, Muğla 48000, Türkiye
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3
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Rana AM, Devreese B, De Waele S, Sodhozai AR, Rozi M, Rashid S, Hameed A, Ali N. Immobilization and docking studies of Carlsberg subtilisin for application in poultry industry. PLoS One 2023; 18:e0269717. [PMID: 37585472 PMCID: PMC10431679 DOI: 10.1371/journal.pone.0269717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 05/24/2022] [Indexed: 08/18/2023] Open
Abstract
Carlsberg subtilisin from Bacillus licheniformis PB1 was investigated as a potential feed supplement, through immobilizing on bentonite for improving the growth rate of broilers. Initially, the pre-optimized and partially-purified protease was extracted and characterized using SDS-PAGE with MW 27.0 KDa. The MALDI-TOF-MS/MS spectrum confirmed a tryptic peptide peak with m/z 1108.496 referring to the Carlsberg subtilisin as a protein-digesting enzyme with alkaline nature. The highest free enzyme activity (30 U/mg) was observed at 50°C, 1 M potassium phosphate, and pH 8.0. the enhanced stability was observed when the enzyme was adsorbed to an inert solid support with 86.39 ± 4.36% activity retention under 20 optimized conditions. Additionally, the dried immobilized enzyme exhibited only a 5% activity loss after two-week storage at room temperature. Structural modeling (Docking) revealed that hydrophobic interactions between bentonite and amino acids surrounding the catalytic triad keep the enzyme structure intact upon drying at RT. The prominent hygroscopic nature of bentonite facilitated protein structure retention upon drying. During a 46-days study, supplementation of boilers' feed with the subtilisin-bentonite complex promoted significant weight gain i.e. 15.03% in contrast to positive control (p = 0.001).
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Affiliation(s)
- Anum Munir Rana
- Department of Microbiology, Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Bart Devreese
- Laboratory of Microbiology–Protein Research Unit, Ghent University, Karel Lodewijk Ghent, Belgium
| | - Stijn De Waele
- Laboratory of Microbiology–Protein Research Unit, Ghent University, Karel Lodewijk Ghent, Belgium
| | - Asma Rabbani Sodhozai
- Department of Microbiology, Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Maryam Rozi
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Sajid Rashid
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Abdul Hameed
- Department of Microbiology, Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Naeem Ali
- Department of Microbiology, Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
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Simultaneous lipase production and immobilization: morphology and physiology study of Penicillium simplicissimum in submerged and solid-state fermentation with polypropylene as an inert support. Enzyme Microb Technol 2023; 164:110173. [PMID: 36529062 DOI: 10.1016/j.enzmictec.2022.110173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 10/16/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022]
Abstract
The influence of different carbon sources (glucose (G), olive oil (O), and a combination of both (GO)) in the physiology (biomass and lipase production) and morphology (light and environmental and scanning electron microscopy) of the fungus Penicillium simplicissimum by applying submerged (SmF) and solid-state (SSF) fermentations was investigated. The cultivation was carried out using polypropylene as hydrophobic inert support in SmF and SSF to understand better the influence of a support for the fungus growth and also provides the immobilization of lipases during its production. Micrographs show different morphologies: in SSF, the fungus grows on and inside the inert support independent of the media; in SmF, the formation of high-density spherical pellets obtained in medium GO leads to the best productivity and specific product yield Yp/x..Conidiation is observed mainly in SSF, a few in SmF with polypropylene as inert support and not in SmF, which may indicate a stress condition in SSF. Possibly, the morphology acquired by the fungus under stressful conditions may be the key to the higher biomass and lipase productivity at SSF. The developed process with simultaneous production and immobilization of lipase leads to a new promissory biocatalyst once it can be directly applied with no need for downstream processes.
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Alagöz D, Toprak A, Varan NE, Yildirim D, Tükel SS. Effective immobilization of lactate dehydrogenase onto mesoporous silica. Biotechnol Appl Biochem 2022; 69:2550-2560. [PMID: 34962677 DOI: 10.1002/bab.2304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 12/08/2021] [Indexed: 12/27/2022]
Abstract
This study presents that covalent immobilization technique has been utilized for the immobilization of l-lactate dehydrogenase (l-LDH) from porcine on mesoporous silica. To develop mesoporous silica as support material for use in l-LDH immobilization, the particle surfaces were functionalized with 3-aminopropyltrimethoxysilane and further conjugated with glutaraldehyde. The effect of some parameters such as glutaraldehyde concentration, immobilization pH, initial enzyme concentration, and immobilization time was investigated and the optimum conditions for these parameters were determined as 1% (w/v), pH 8.0, 1 mg/ml, and 120 min, respectively. The maximum working pH and temperature for the oxidation of lactate to pyruvate reaction were determined as 10.0 and 35°C for free and 9.0 and 40°C for immobilized l-LDH, respectively. The kinetic parameters (Km and Vmax ) of l-LDH for the oxidation of lactate to pyruvate reaction were examined as 1.02 mM and 7.58 U/mg protein for free and 0.635 mM and 1.7 U/mg protein for immobilized l-LDH, respectively. Moreover, the immobilized l-LDH was 1.3-fold more stable than free l-LDH at 25°C according to calculated t1/2 values. The immobilized l-LDH retained 80% of its initial activity in a batch reactor after 14 reuses.
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Affiliation(s)
- Dilek Alagöz
- Imamoglu Vocational School, Cukurova University, Adana, Turkey
| | - Ali Toprak
- Acigol Vocational School, Nevsehir Haci Bektas Veli University, Nevsehir, Turkey
| | - Nazlı Ece Varan
- Chemistry Department, Sciences & Letters Faculty, Cukurova University, Adana, Turkey
| | - Deniz Yildirim
- Chemical Engineering Department, Ceyhan Engineering Faculty, Cukurova University, Adana, Turkey
| | - S Seyhan Tükel
- Chemistry Department, Sciences & Letters Faculty, Cukurova University, Adana, Turkey
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6
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Applications of Cryostructures in the Chromatographic Separation of Biomacromolecules. J Chromatogr A 2022; 1683:463546. [DOI: 10.1016/j.chroma.2022.463546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 09/05/2022] [Accepted: 09/29/2022] [Indexed: 12/20/2022]
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7
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Parafati L, Palmeri R, Pitino I, Restuccia C. Killer yeasts isolated from olive brines: Technological and probiotic aptitudes. Food Microbiol 2022; 103:103950. [DOI: 10.1016/j.fm.2021.103950] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 11/18/2021] [Accepted: 11/18/2021] [Indexed: 12/18/2022]
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8
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Enzymatic Production of Ecodiesel by Using a Commercial Lipase CALB, Immobilized by Physical Adsorption on Mesoporous Organosilica Materials. Catalysts 2021. [DOI: 10.3390/catal11111350] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The synthesis of two biocatalysts based on a commercial Candida antarctica lipase B, CALB enzyme (E), physically immobilized on two silica supports, was carried out. The first support was a periodic mesoporous organosilica (PMO) and the second one was a commercial silica modified with octyl groups (octyl-MS3030). The maximum enzyme load was 122 mg enzyme/g support on PMO and 288 mg enzyme/g support on octyl-MS3030. In addition, the biocatalytic efficiency was corroborated by two reaction tests based on the hydrolysis of p-nitrophenylacetate (p-NPA) and tributyrin (TB). The transesterification of sunflower oil with ethanol was carried out over the biocatalysts synthesized at the following reaction conditions: 6 mL sunflower oil, 1.75 mL EtOH, 30 °C, 25 μL NaOH 10 N and 300 rpm, attaining conversion values over 80% after 3 h of reaction time. According to the results obtained, we can confirm that these biocatalytic systems are viable candidates to develop, optimize and improve a new methodology to achieve the integration of glycerol in different monoacylglycerol molecules together with fatty acid ethyl esters (FAEE) molecules to obtain Ecodiesel.
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9
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Abstract
The industrial use of enzymes generally necessitates their immobilization onto solid supports. The well-known high affinity of enzymes for metal-organic framework (MOF) materials, together with the great versatility of MOFs in terms of structure, composition, functionalization and synthetic approaches, has led the scientific community to develop very different strategies for the immobilization of enzymes in/on MOFs. This review focuses on one of these strategies, namely, the one-pot enzyme immobilization within sustainable MOFs, which is particularly enticing as the resultant biocomposite Enzyme@MOFs have the potential to be: (i) prepared in situ, that is, in just one step; (ii) may be synthesized under sustainable conditions: with water as the sole solvent at room temperature with moderate pHs, etc.; (iii) are able to retain high enzyme loading; (iv) have negligible protein leaching; and (v) give enzymatic activities approaching that given by the corresponding free enzymes. Moreover, this methodology seems to be near-universal, as success has been achieved with different MOFs, with different enzymes and for different applications. So far, the metal ions forming the MOF materials have been chosen according to their low price, low toxicity and, of course, their possibility for generating MOFs at room temperature in water, in order to close the cycle of economic, environmental and energy sustainability in the synthesis, application and disposal life cycle.
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10
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Preparation and Characterization of Amino-Functionalized Zeolite/SiO2 Materials for Trypsin–Chymotrypsin Co-immobilization. Catal Letters 2021. [DOI: 10.1007/s10562-021-03636-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Lipase Immobilized on MCFs as Biocatalysts for Kinetic and Dynamic Kinetic Resolution of sec-Alcohols. Catalysts 2021. [DOI: 10.3390/catal11040518] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Dynamic kinetic resolution (DKR) is one of the most attractive methods for enantioselective synthesis. In the reported studies, lipase B from Candida antarctica (CALB) immobilized on siliceous mesoporous cellular foams (MCF) functionalized with different hydrophobic groups, and two ruthenium complexes with substituted cyclopentadienyl ligands were investigated as catalysts for the chemoenzymatic DKR of (rac)-1-phenylethanol, using Novozym 435 as a benchmark biocatalyst. Studies on the (rac)-1-phenylethanol transesterification reaction showed that CALB supported on MCFs grafted with methyl groups is a promising biocatalyst and isopropenyl acetate is a preferable acylation agent. Both Ru-complexes activated by K3PO4 or t-BuOK, proved to be effective catalysts of the racemization reaction. The final DKR experiments using all catalysts combinations singled out, gave 96% conversion, and (R)-1-phenylethyl acetate enantiomeric excess of 98% in 8 h using K3PO4 activator.
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12
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Deon M, Carminatti Ricardi N, Carvalho de Andrade R, Hertz PF, Nicolodi S, Costa TMH, Bussamara R, Benvenutti EV, de Menezes EW. Designing a Support for Lipase Immobilization Based On Magnetic, Hydrophobic, and Mesoporous Silica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:10147-10155. [PMID: 32787062 DOI: 10.1021/acs.langmuir.0c01594] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A mesoporous, magnetic, and hydrophobic material was designed step by step to act as a support for lipase immobilization. Its pore size (8.0 nm) is compatible with the size of lipase from Thermomyces lanuginosus (TLL), and its hydrophobic surface (contact angle of a water drop = 125°) was planned to interact with lipase on its interfacially activated form (open conformation). The presence of magnetite particles provides magnetic retrieval of the material and enables recyclability of the biocatalysts. Regarding immobilization parameters, the hydrophobic support was tested in comparison to the unmodified hydrophilic support in phosphate buffer solution (50 mmol L-1, pH 7.5) at 25 °C. Hydrophobicity was found to be critical for the amount of immobilized TLL (immobilization yield of 97% versus 36% for the hydrophilic support), whereas the hydrophilic support favors the native conformational state and substrate access to the enzyme's catalytic site (specific activity of 5.7 versus 4.7 U g-1 for the hydrophobic support, even when it has higher TLL content). Therefore, the hydrophobic support immobilizes higher amounts of TLL and the hydrophilic support keeps the enzyme hyperactivated. Last, due to the stronger interactions of TLL with hydrophobic surfaces, the hydrophobic support offers better preservation of enzyme activity in repeated cycles (76% of activity retained after three cycles versus 50% for the hydrophilic support).
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Affiliation(s)
- Monique Deon
- Instituto de Quı́mica, UFRGS, CP 15003, CEP 91501-970 Porto Alegre, RS, Brazil
| | | | | | - Plinho Francisco Hertz
- Instituto de Ciência e Tecnologia de Alimentos, UFRGS, CP 15015, CEP 91501-970 Porto Alegre, RS, Brazil
| | - Sabrina Nicolodi
- Instituto de Fı́sica, UFRGS, CP 15051, CEP 91501-970 Porto Alegre, RS, Brazil
| | | | - Roberta Bussamara
- Instituto de Quı́mica, UFRGS, CP 15003, CEP 91501-970 Porto Alegre, RS, Brazil
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Kuang L, Zhang Q, Li J, Tian H. Preparation of Lipase-Electrospun SiO 2 Nanofiber Membrane Bioreactors and Their Targeted Catalytic Ability at the Macroscopic Oil-Water Interface. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:8362-8369. [PMID: 32649192 DOI: 10.1021/acs.jafc.0c02801] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Lipase is one of the most widely used enzymes in biocatalysis. Because of the special structure of the catalytic active center, lipases show high catalytic activity at oil-water interfaces. Hence, the interface plays a key role in activating and modulating lipase biocatalysis. Compared with traditional catalytic systems that offer interfaces, such as emulsions, a lipase-membrane bioreactor exhibits many obvious advantages when at the macroscopic oil-water system. In our current research, a series of new Burkholderia cepacia lipase (BCL)-SiO2 nanofiber membrane (NFM) bioreactors prepared via combined electrospinning and immobilization strategies were reported. These SiO2 NFMs assisted BCL in reaching the oil-water interface for efficient catalysis. The enzyme loading capacity and catalytic efficiency of BCL-SiO2 NFMs varied with the surface hydrophobicity of the electrospun NFMs. As the hydrophobicity increased, the activity decreased from 2.43-fold to 0.74-fold that of free BCL. However, the lipase-loading capacity increased obviously when the hydrophobicity of the SiO2 NFMs increased from 0 to 143°, and no significant change was observed when the hydrophobicity of the SiO2 NFMs increased from 143 to 153°. The gel trapping technique proved that the hydrolytic activity of the different BCL-SiO2 NFM bioreactors depends on the contact area of the membrane at the oil-water interface. BCL-SiO2 NFM, BCL-SiO2 NFM-C12, and BCL-SiO2 NFM-C18 retained 32, 83, and 42% of activity, respectively, after five cycles of reuse. The current work was a useful exploration of the construction and modification of lipase-membrane reactors based on electrospun inorganic silicon.
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Affiliation(s)
- Lei Kuang
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, P. R. China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, P. R. China
| | - Qianqian Zhang
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, P. R. China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, P. R. China
| | - Jinlong Li
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, P. R. China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, P. R. China
| | - Huafeng Tian
- School of Materials Science and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, P. R. China
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14
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Jin S, Gao M, Kong W, Yang B, Kuang H, Yang B, Fu Y, Cheng Y, Li H. Enhanced and sustainable pretreatment for bioconversion and extraction of resveratrol from peanut skin using ultrasound-assisted surfactant aqueous system with microbial consortia immobilized on cellulose. 3 Biotech 2020; 10:293. [PMID: 32550111 DOI: 10.1007/s13205-020-02287-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/01/2020] [Indexed: 11/26/2022] Open
Abstract
In this study, the ultrasound-assisted surfactant aqueous system coupled with microbial consortia immobilized by cellulose has been created as an enhanced and sustainable method for the bioconversion and extraction of resveratrol from peanut skin. Based on central composite design, and several single-factor experiments, we derived the optimal bioconversion and extraction system. Microbial consortia consist of Yeast CICC 1912, Aspergillus oryzae 3.951 and Aspergillus niger 3.3148 were chosen to be immobilized using cellulose. Other treatment conditions include concentration of surfactant as 3% (w/v), temperature as 30 °C, time as 36 h, ultrasonic power as 250 W and liquid to solid ratio as 25:1 mL/g. Under these conditions, we achieved a promising yield of resveratrol 96.58 μg/g, which is 4.02 folds compared to the untreated sample. This sustainable and green method not only enhanced the production of resveratrol but also improved the safety and reliability of the bioconversion and extraction process. Our novel method has shown great potential to realize large-scale bioconversion and extraction of bioactive compounds from plant waste.
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Affiliation(s)
- Shuang Jin
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150040 People's Republic of China
- Key Laboratory of Chinese Materia Medica, Ministry of Education, Harbin, 150040 People's Republic of China
| | - Mengmeng Gao
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150040 People's Republic of China
- Key Laboratory of Chinese Materia Medica, Ministry of Education, Harbin, 150040 People's Republic of China
| | - Wentao Kong
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL USA
| | - Bingyou Yang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150040 People's Republic of China
- Key Laboratory of Chinese Materia Medica, Ministry of Education, Harbin, 150040 People's Republic of China
| | - Haixue Kuang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150040 People's Republic of China
- Key Laboratory of Chinese Materia Medica, Ministry of Education, Harbin, 150040 People's Republic of China
| | - Bo Yang
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150040 People's Republic of China
- Key Laboratory of Chinese Materia Medica, Ministry of Education, Harbin, 150040 People's Republic of China
| | - Yujie Fu
- State Engineering Laboratory of Bio-Resource Eco-Utilization, Northeast Forestry University, Harbin, 150040 People's Republic of China
| | - Yupeng Cheng
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150040 People's Republic of China
- Key Laboratory of Chinese Materia Medica, Ministry of Education, Harbin, 150040 People's Republic of China
| | - Huiling Li
- College of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, 150040 People's Republic of China
- Key Laboratory of Chinese Materia Medica, Ministry of Education, Harbin, 150040 People's Republic of China
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15
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Mohammadi S, Naeimi H. Functionalized CoFe
2
O
4
/lamellar mesopore silica anchored to melamine nanocomposite as a novel catalyst for synthesis of 4
H
‐chromenes under mild conditions. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5630] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Somaye Mohammadi
- Department of Organic Chemistry, Faculty of ChemistryUniversity of Kashan Kashan 87317‐51167, I R Iran
| | - Hossein Naeimi
- Department of Organic Chemistry, Faculty of ChemistryUniversity of Kashan Kashan 87317‐51167, I R Iran
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16
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Rodríguez K, Martinez R, Bernal C. Selective immobilization of Bacillus subtilis lipase A from cell culture supernatant: Improving catalytic performance and thermal resistance. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.01.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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17
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Aslan Y, Sharif YM, Şahin Ö. Covalent immobilization of Aspergillus niger amyloglucosidase (ANAG) with ethylenediamine-functionalized and glutaraldehyde-activated active carbon (EFGAAC) obtained from sesame seed shell. Int J Biol Macromol 2020; 142:222-231. [DOI: 10.1016/j.ijbiomac.2019.09.226] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 09/22/2019] [Accepted: 09/24/2019] [Indexed: 01/06/2023]
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18
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Preparation of hydrophobic MFI zeolites containing hierarchical micro-mesopores using seeds functionalized with octyltriethoxysilane. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124109] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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19
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Rios NS, Morais EG, dos Santos Galvão W, Andrade Neto DM, dos Santos JCS, Bohn F, Correa MA, Fechine PBA, Fernandez-Lafuente R, Gonçalves LRB. Further stabilization of lipase from Pseudomonas fluorescens immobilized on octyl coated nanoparticles via chemical modification with bifunctional agents. Int J Biol Macromol 2019; 141:313-324. [DOI: 10.1016/j.ijbiomac.2019.09.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 08/26/2019] [Accepted: 09/02/2019] [Indexed: 12/27/2022]
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Almulaiky YQ, Al-Harbi SA. A novel peroxidase from Arabian balsam (Commiphora gileadensis) stems: Its purification, characterization and immobilization on a carboxymethylcellulose/Fe3O4 magnetic hybrid material. Int J Biol Macromol 2019; 133:767-774. [DOI: 10.1016/j.ijbiomac.2019.04.119] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 04/09/2019] [Accepted: 04/16/2019] [Indexed: 01/11/2023]
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21
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Lipase mediated synthesis of polycaprolactone and its silica nanohybrid. PURE APPL CHEM 2019. [DOI: 10.1515/pac-2018-1011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this study, rice husk ash (RHA) silanized with 3-glycidyloxypropyl trimethoxysilane was used as support material to immobilize Candida antarctica lipase B. The developed biocatalyst was then utilized in the ring opening polymerization (ROP) of ε-caprolactone and in situ development of PCL/Silica nanohybrid. The silanization degree of RHA was determined as 4 % (w) by thermal gravimetric analysis (TGA). Structural investigations and calculation of molecular weights of nanohybrids were realized by proton nuclear magnetic resonance (1H NMR). Crystallinity was determined by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). Scanning Electron Microscopy (SEM) was used for morphological observations. Accordingly, the PCL composition in the nanohybrid was determined as 4 %, approximately. Short chained amorphous PCL was synthesized with a number average molecular weight of 4400 g/mol and crystallinity degree of 23 %. In regards to these properties, synthesized PCL/RHA composite can find use biomedical applications.
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Demirbaş Ö, Çalımlı MH, Demirkan B, Alma MH, Nas MS, Khan A, Asiri AM, Şen F. Thermodynamics, Kinetics, and Adsorption Properties of Biomolecules onto Carbon-Based Materials Obtained from Food Wastes. BIONANOSCIENCE 2019. [DOI: 10.1007/s12668-019-00628-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Hou C, Ghéczy N, Messmer D, Szymańska K, Adamcik J, Mezzenga R, Jarzębski AB, Walde P. Stable Immobilization of Enzymes in a Macro- and Mesoporous Silica Monolith. ACS OMEGA 2019; 4:7795-7806. [PMID: 31459868 PMCID: PMC6648689 DOI: 10.1021/acsomega.9b00286] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/17/2019] [Indexed: 05/10/2023]
Abstract
Horseradish peroxidase isoenzyme C (HRP) and Engyodontium album proteinase K (proK) were immobilized inside macro- and mesoporous silica monoliths. Stable immobilization was achieved through simple noncovalent adsorption of conjugates, which were prepared from a polycationic, water-soluble second generation dendronized polymer (denpol) and the enzymes. Conjugates prepared from three denpols with the same type of repeating unit (r.u.), but different average lengths were compared. It was shown that there is no obvious advantage of using denpols with very long chains. Excellent results were achieved with denpols having on average 750 or 1000 r.u. The enzyme-loaded monoliths were tested as flow reactors. Comparison was made with microscopy glass coverslips onto which the conjugates were immobilized and with glass micropipettes containing adsorbed conjugates. High enzyme loading was achieved using the monoliths. Monoliths containing immobilized denpol-HRP conjugates exhibited good operational stability at 25 °C (for at least several hours), and good storage stability at 4 °C (at least for weeks) was demonstrated. Such HRP-containing monoliths were applied as continuous flow reactors for the quantitative determination of hydrogen peroxide in aqueous solution between 1 μM (34 ng/mL) and 50 μM (1.7 μg/mL). Although many methods for immobilizing enzymes on silica surfaces exist, there are only a few approaches with porous silica materials for the development of flow reactors. The work presented is a promising contribution to this field of research toward bioanalytical and biosynthetic applications.
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Affiliation(s)
- Chengmin Hou
- Department of Materials
(D-MATL), ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
- Faculty of Printing, Packaging and Digital
Media, Xi’an University of Technology, Jinhua South Road 5#, Xi’an City, 710048 Shaanxi Province, China
| | - Nicolas Ghéczy
- Department of Materials
(D-MATL), ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Daniel Messmer
- Department of Materials
(D-MATL), ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Katarzyna Szymańska
- Department of Chemical Engineering and Process Design, Silesian University of Technology, Ks. M. Strzody 7, 44-100 Gliwice, Poland
| | - Jozef Adamcik
- Department of Health Sciences and Technology (D-HEST), ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland
| | - Raffaele Mezzenga
- Department of Health Sciences and Technology (D-HEST), ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland
| | - Andrzej B. Jarzębski
- Department of Chemical Engineering and Process Design, Silesian University of Technology, Ks. M. Strzody 7, 44-100 Gliwice, Poland
- Institute of Chemical Engineering, Polish
Academy of Sciences, Baltycka 5, 44-100 Gliwice, Poland
| | - Peter Walde
- Department of Materials
(D-MATL), ETH Zürich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
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Cochineal Waxy Residues as Source of Policosanol: Chemical Hydrolysis and Enzymatic Transesterification. J CHEM-NY 2019. [DOI: 10.1155/2019/4547378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The aim of this study was to obtain and characterise the long-chain alcohols present in policosanol derived from waste from the production of carminic acid, a natural colouring agent widely used in the food industry. The effectiveness of different methods designed for extraction of policosanol from waxy waste was investigated and its content and composition was determined. Triacontanol was the main component in policosanol produced by chemical processes, and it yields up to 13% by alkaline hydrolysis in water and chloroform extraction. Regarding enzymatic transesterification, policosanol was obtained using lipase Candida antarctica recombinant in Aspergillus niger (CAL-Bn) in a reaction medium with toluene. To improve the reaction, different acyl receptors, propanol, butanol, and isopropanol, were tested and molecular sieves were employed to maintain an anhydrous reaction medium. In this case, the policosanol was made up of other long-chain alcohols, but triacontanol was obtained in yields of up to 19% using isopropanol as an acyl receptor. Triacontanol has a great commercial value due to its effect as a promoter of plant growth, and these results contribute to the use and application of this agroindustrial waste in obtaining value-added products.
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Joyce P, Gustafsson H, Prestidge CA. Engineering intelligent particle-lipid composites that control lipase-mediated digestion. Adv Colloid Interface Sci 2018; 260:1-23. [PMID: 30119842 DOI: 10.1016/j.cis.2018.08.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 08/01/2018] [Accepted: 08/02/2018] [Indexed: 12/25/2022]
Abstract
Nanostructured particle-lipid composites have emerged as state-of-the-art carrier systems for poorly water-soluble bioactive molecules due to their ability to control and enhance the lipase-mediated hydrolysis of encapsulated triglycerides, leading to a subsequent improvement in the solubilisation and absorption of encapsulated species. The first generation of particle-lipid composites (i.e. silica-lipid hybrid (SLH) microparticles) were designed and fabricated by spray drying a silica nanoparticle-stabilised Pickering emulsion, to create a novel three-dimensional architecture, whereby lipid droplets were encapsulated within a porous matrix support. The development of SLH microparticles has acted as a solid foundation for the synthesis of several next generation particle-lipid composites, including polymer-lipid hybrid (PLH) and clay-lipid hybrid systems (CLH), which present lipase with unique lipid microenvironments for optimised lipolysis. This review details the methods utilised to engineer lipid hybrid particles and the strategic investigations that have been performed to determine the influence of key material characteristics on digestion enzyme activity. In doing so, this provides insight into manipulating the mechanism of lipase action through the intelligent design of lipid-based biomaterials for their use in drug delivery formulations and novel functional foods.
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26
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Baskaran R, Bandikari R, Zuo W, Qian J, Liu Z. Enhanced thermostability of halo-tolerant glutaminase from Bacillus licheniformis ATCC 14580 by immobilization onto nano magnetic cellulose sheet and its application in production of glutamic acid. Int J Biol Macromol 2018; 119:1256-1263. [PMID: 30096399 DOI: 10.1016/j.ijbiomac.2018.08.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 08/05/2018] [Accepted: 08/07/2018] [Indexed: 11/30/2022]
Abstract
A halo-tolerant glutaminase gene (BlglsA) was isolated from Bacillus licheniformis. Heterologous expression of BlglsA revealed that it encodes for a 36 kDa protein containing 327 amino acid residues. The purified enzyme showed optimal activity at a pH of 9.5 while 35 °C was found to be the optimum temperature. The enzyme retained about 92 and 97% stability at pH 12 and temperature (40 °C) respectively. Subsequent immobilization of BlglsA on nano magnetic cellulose sheet (NMCS) led to an enhanced tolerance to higher temperature. NMCS-BlglsA showed optimum activity at 45 °C, although it was stable even at 60 °C. NaCl tolerance (≥90% in 0.3 M) was almost similar to BlglsA and NMCS-BlglsA. The metal ions Fe2+ (5 mM) and Mn2+ (2.5 mM) improved the BlglsA relative activity by 61 and 48%, respectively. In contrast, 5 mM Mn2+ was found suitable to enhance the activity of NMCS-BlglsA up to 72%. The production of glutamic acid by NMCS-BlglsA was 1.61 g/l in 48 h. Reusability test of NMCS-BlglsA showed 76 and 35% retention of the actual activity after 4th and 7th cycle, respectively. Such remarkable biochemical properties of NMCS-BlglsA make it an attractive enzyme for food industries.
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Affiliation(s)
- Ram Baskaran
- College of Life Science and Technology, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Ramesh Bandikari
- College of Life Science and Technology, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
| | - Wu Zuo
- CAS Center for Excellence on Molecular Cell Science, Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, China
| | - Jiaxin Qian
- College of Life Science and Technology, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ziduo Liu
- College of Life Science and Technology, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China.
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Tubular and Spherical SiO₂ Obtained by Sol Gel Method for Lipase Immobilization and Enzymatic Activity. Molecules 2018; 23:molecules23061362. [PMID: 29874881 PMCID: PMC6100421 DOI: 10.3390/molecules23061362] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/01/2018] [Accepted: 06/01/2018] [Indexed: 11/21/2022] Open
Abstract
A wide range of hybrid biomaterials has been designed in order to sustain bioremediation processes by associating sol-gel SiO2 matrices with various biologically active compounds (enzymes, antibodies). SiO2 is a widespread, chemically stable and non-toxic material; thus, the immobilization of enzymes on silica may lead to improving the efficiency of biocatalysts in terms of endurance and economic costs. Our present work explores the potential of different hybrid morphologies, based on hollow tubes and solid spheres of amorphous SiO2, for enzyme immobilization and the development of competitive biocatalysts. The synthesis protocol and structural characterization of spherical and tubular SiO2 obtained by the sol gel method were fully investigated in connection with the subsequent immobilization of lipase from Rhizopus orizae. The immobilization is conducted at pH 6, lower than the isoelectric point of lipase and higher than the isoelectric point of silica, which is meant to sustain the physical interactions of the enzyme with the SiO2 matrix. The morphological, textural and surface properties of spherical and tubular SiO2 were investigated by SEM, nitrogen sorption, and electrokinetic potential measurements, while the formation and characterization of hybrid organic-inorganic complexes were studied by UV-VIS, FTIR-ATR and fluorescence spectroscopy. The highest degree of enzyme immobilization (as depicted from total organic carbon) was achieved for tubular morphology and the hydrolysis of p-nitrophenyl acetate was used as an enzymatic model reaction conducted in the presence of hybrid lipase–SiO2 complex.
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de Lima LN, Mendes AA, Fernandez-Lafuente R, Tardioli PW, Giordano RDLC. Performance of Different Immobilized Lipases in the Syntheses of Short- and Long-Chain Carboxylic Acid Esters by Esterification Reactions in Organic Media. Molecules 2018; 23:E766. [PMID: 29584655 PMCID: PMC6017531 DOI: 10.3390/molecules23040766] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 03/19/2018] [Accepted: 03/24/2018] [Indexed: 11/16/2022] Open
Abstract
Short-chain alkyl esters and sugar esters are widely used in the food, pharmaceutical and cosmetic industries due to their flavor and emulsifying characteristics, respectively. Both compounds can be synthesized via biocatalysis using lipases. This work aims to compare the performance of commercial lipases covalently attached to dry acrylic beads functionalized with oxirane groups (lipases from Candida antarctica type B-IMMCALB-T2-350, Pseudomonas fluorescens-IMMAPF-T2-150, and Thermomyces lanuginosus-IMMTLL-T2-150) and a home-made biocatalyst (lipase from Pseudomonas fluorescens adsorbed onto silica coated with octyl groups, named PFL-octyl-silica) in the syntheses of short- and long-chain carboxylic acid esters. Esters with flavor properties were synthetized by esterification of acetic and butyl acids with several alcohols (e.g., ethanol, 1-butanol, 1-hexanol, and isoamyl alcohol), and sugar esters were synthetized by esterification of oleic and lauric acids with fructose and lactose. All biocatalysts showed similar performance in the syntheses of short-chain alkyl esters, with conversions ranging from 88.9 to 98.4%. However, in the syntheses of sugar esters the performance of PFL-octyl-silica was almost always lower than the commercial IMMCALB-T2-350, whose conversion was up to 96% in the synthesis of fructose oleate. Both biocatalysts showed high operational stability in organic media, thus having great potential for biotransformations.
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Affiliation(s)
- Lionete Nunes de Lima
- Graduate Program in Chemical Engineering, Department of Chemical Engineering, Federal University of São Carlos, 13565-905 São Carlos, SP, Brazil.
| | - Adriano Aguiar Mendes
- Institute of Chemistry, Federal University of Alfenas, 37130-001 Alfenas, MG, Brazil; .
| | | | - Paulo Waldir Tardioli
- Graduate Program in Chemical Engineering, Department of Chemical Engineering, Federal University of São Carlos, 13565-905 São Carlos, SP, Brazil.
| | - Raquel de Lima Camargo Giordano
- Graduate Program in Chemical Engineering, Department of Chemical Engineering, Federal University of São Carlos, 13565-905 São Carlos, SP, Brazil.
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Cho HJ, Jang WJ, Moon SY, Lee JM, Kim JH, Han HS, Kim KW, Lee BJ, Kong IS. Immobilization of β-1,3-1,4-glucanase from Bacillus sp. on porous silica for production of β-glucooligosaccharides. Enzyme Microb Technol 2018; 110:30-37. [DOI: 10.1016/j.enzmictec.2017.12.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/26/2017] [Accepted: 12/18/2017] [Indexed: 10/18/2022]
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31
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Bandikari R, Qian J, Baskaran R, Liu Z, Wu G. Bio-affinity mediated immobilization of lipase onto magnetic cellulose nanospheres for high yield biodiesel in one time addition of methanol. BIORESOURCE TECHNOLOGY 2018; 249:354-360. [PMID: 29055211 DOI: 10.1016/j.biortech.2017.09.156] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 09/21/2017] [Accepted: 09/22/2017] [Indexed: 06/07/2023]
Abstract
To synthesis biodiesel from palm oil in one-time addition of methanol and solvent-free medium using CBD fused with C-terminal of lipase from G. stearothermophilus (GSlip-CBD) was immobilized onto magnetic cellulose nanosphere (MCNS). The immobilized matrix traits were preconceived by FT-IR, TEM and XRD. Perceptible biodiesel yield 98 and 73% was synthesized by GSlip-CBD-MCNS in 4 h and GSlip-MCNS in 6 h under the optimized conditions of oil:methanol ratio (1:3.5), temperature (55 and 50 °C) and enzyme loading (15 U). Intriguingly, the operational stability of GSlip-CBD-MCNS was an easily attainable owing to the magnetic properties and could be reused up to 8th and19th cycles with 94 and 45% of biodiesel yield respectively, compared to GSlip-MCNS. Thus GSlip-CBD-MCNS could be a potential biocatalyst for higher yield of biodiesel and reusability in one step addition of methanol.
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Affiliation(s)
- Ramesh Bandikari
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Shizishan Street, Wuhan 430070, China
| | - Jiaxin Qian
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Shizishan Street, Wuhan 430070, China
| | - Ram Baskaran
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Shizishan Street, Wuhan 430070, China
| | - Ziduo Liu
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Shizishan Street, Wuhan 430070, China.
| | - Gaobing Wu
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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Remonatto D, de Oliveira JV, Manuel Guisan J, de Oliveira D, Ninow J, Fernandez-Lorente G. Production of FAME and FAEE via Alcoholysis of Sunflower Oil by Eversa Lipases Immobilized on Hydrophobic Supports. Appl Biochem Biotechnol 2018; 185:705-716. [PMID: 29297136 DOI: 10.1007/s12010-017-2683-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 12/19/2017] [Indexed: 10/18/2022]
Abstract
The performance of two new commercial low-cost lipases Eversa® Transform and Eversa® Transform 2.0 immobilized in different supports was investigated. The two lipases were adsorbed on four different hydrophobic supports. Interesting results were obtained for both lipases and for the four supports. However, the most active derivative was prepared by immobilization of Eversa® Transform 2.0 on Sepabeads C-18. Ninety-nine percent of fatty acid ethyl ester was obtained, in 3 h at 40 °C, by using hexane as solvent, a molar ratio of 4:1 (ethanol/oil), and 10 wt% of immobilized biocatalyst. The final reaction mixture contained traces of monoacylglycerols but was completely free of diacylglycerols. After four reaction cycles, the immobilized biocatalyst preserved 75% of activity. Both lipases immobilized in Sepabeads C-18 were very active with ethanol and methanol as acceptors, but they were much more stable in the presence of ethanol.
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Affiliation(s)
- Daniela Remonatto
- Department of Chemical and Food Engineering, UFSC, Florianópolis, SC, 88040-900, Brazil
| | | | - J Manuel Guisan
- Departamento de Biocatálisis, Instituto de Catálisis (CSIC),, UAM, Cantoblanco, 28049, Madrid, Spain
| | - Débora de Oliveira
- Department of Chemical and Food Engineering, UFSC, Florianópolis, SC, 88040-900, Brazil.
| | - Jorge Ninow
- Department of Chemical and Food Engineering, UFSC, Florianópolis, SC, 88040-900, Brazil
| | - Gloria Fernandez-Lorente
- Departamento de Biotecnología y Microbiología de los Alimentos, Instituto de Alimentación (CIAL), CSIC-UAM, Madrid, Spain
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Califano V, Bloisi F, Perretta G, Aronne A, Ausanio G, Costantini A, Vicari L. Frozen Microemulsions for MAPLE Immobilization of Lipase. Molecules 2017; 22:molecules22122153. [PMID: 29206163 PMCID: PMC6149894 DOI: 10.3390/molecules22122153] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/26/2017] [Accepted: 11/27/2017] [Indexed: 11/16/2022] Open
Abstract
Candida rugosa lipase (CRL) was deposited by matrix assisted pulsed laser evaporation (MAPLE) in order to immobilize the enzyme with a preserved native conformation, which ensures its catalytic functionality. For this purpose, the composition of the MAPLE target was optimized by adding the oil phase pentane to a water solution of the amino acid 3-(3,4-dihydroxyphenyl)-2-methyl-l-alanine (m-DOPA), giving a target formed by a frozen water-lipase-pentane microemulsion. Fourier transform infrared (FTIR) spectroscopy and atomic force microscopy (AFM) were used to investigate the structure of MAPLE deposited lipase films. FTIR deconvolution of amide I band indicated a reduction of unfolding and aggregation, i.e., a better preserved lipase secondary structure in the sample deposited from the frozen microemulsion target. AFM images highlighted the absence of big aggregates on the surface of the sample. The functionality of the immobilized enzyme to promote transesterification was determined by thin layer chromatography, resulting in a modified specificity.
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Affiliation(s)
| | - Francesco Bloisi
- CNR-SPIN and Department of Physics "Ettore Pancini", University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Napoli, Italy.
| | | | - Antonio Aronne
- Department of Chemical Engineering, Materials and Industrial Production, University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Napoli, Italy.
| | - Giovanni Ausanio
- CNR-SPIN and Department of Physics "Ettore Pancini", University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Napoli, Italy.
| | - Aniello Costantini
- Department of Chemical Engineering, Materials and Industrial Production, University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Napoli, Italy.
| | - Luciano Vicari
- CNR-SPIN and Department of Physics "Ettore Pancini", University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Napoli, Italy.
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Vescovi V, dos Santos JBC, Tardioli PW. Porcine pancreatic lipase hydrophobically adsorbed on octyl-silica: A robust biocatalyst for syntheses of xylose fatty acid esters. BIOCATAL BIOTRANSFOR 2017. [DOI: 10.1080/10242422.2017.1335717] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Vinicius Vescovi
- Department of Chemical Engineering, Graduate Program in Chemical Engineering, Federal University of São Carlos, São Carlos, SP, Brazil
| | | | - Paulo Waldir Tardioli
- Department of Chemical Engineering, Graduate Program in Chemical Engineering, Federal University of São Carlos, São Carlos, SP, Brazil
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Palmeri R, Restuccia C, Monteleone JI, Sperlinga E, Siracusa L, Serafini M, Finamore A, Spagna G. Bioactivity Improvement of Olea europaea Leaf Extract Biotransformed by Wickerhamomyces anomalus Enzymes. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2017; 72:211-218. [PMID: 28503711 DOI: 10.1007/s11130-017-0612-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Olive leaves represent a quantitatively significant by-product of agroindustry. They are rich in phenols, mainly oleuropein, which can be hydrolyzed into several bioactive compounds, including hydroxytyrosol. In this study, water extract from olive leaves 'Biancolilla' was analyzed for polyphenol profile, DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity and protective effect on differentiated Caco-2 cells. The efficacy of two enzymatic treatments in promoting the release of bioactive phenols was investigated: a) enzymatic extract from Wickerhamomyces anomalus, characterized by β-glucosidase and esterase activities; b) commercial β-glucosidase. Composition and bioactivity of the resulting extracts were compared. The results showed that the yeast-treated extract presented hydroxytyrosol content and DPPH radical scavenging activity comparable to those obtained using commercial β-glucosidase; however, it was showed the additional presence of hydroxycinnamic acids. In experiments on Caco-2 cells, the leaf extracts promoted the recovery of cell membrane barrier at different minimum effective concentrations. The high specificity of W. anomalus enzymatic extract may represent an effective tool for the release of bioactive phenols from olive by-products.
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Affiliation(s)
- Rosa Palmeri
- Di3A, Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, via S. Sofia 100, 95123, Catania, Italy
| | - Cristina Restuccia
- Di3A, Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, via S. Sofia 100, 95123, Catania, Italy.
| | - Julieta Ines Monteleone
- Di3A, Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, via S. Sofia 100, 95123, Catania, Italy
| | - Elisa Sperlinga
- CNR-ICB, Consiglio Nazionale delle Ricerche-Istituto di Chimica Biomolecolare, via Paolo Gaifami 18, 95126, Catania, Italy
| | - Laura Siracusa
- CNR-ICB, Consiglio Nazionale delle Ricerche-Istituto di Chimica Biomolecolare, via Paolo Gaifami 18, 95126, Catania, Italy
| | - Mauro Serafini
- Functional Food and Metabolic Stress Prevention Laboratory, Faculty of BioSciences and Technology for Food, Agriculture and Environment, University of Teramo, via R. Balzarini 1, 64100, Teramo, Italy
| | - Alberto Finamore
- CREA NUT, Centro di Ricerca per gli Alimenti e la Nutrizione- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Via Ardeatina 546, 00178, Rome, Italy
| | - Giovanni Spagna
- Di3A, Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, via S. Sofia 100, 95123, Catania, Italy
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Affiliation(s)
- Rosa M. Blanco
- Instituto de Catálisis y Petroleoquímica, Department of Biocatalysis, CSIC, Madrid, Spain
| | - Ismael Roldán
- Instituto de Catálisis y Petroleoquímica, Department of Biocatalysis, CSIC, Madrid, Spain
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Shuai W, Das RK, Naghdi M, Brar SK, Verma M. A review on the important aspects of lipase immobilization on nanomaterials. Biotechnol Appl Biochem 2017; 64:496-508. [DOI: 10.1002/bab.1515] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 05/27/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Weitao Shuai
- College of Environmental Sciences and Engineering; Peking University; Beijing People's Republic of China
- INRS-ETE; Université du Québec; Québec Canada
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Fernandez-Lopez L, Pedrero SG, Lopez-Carrobles N, Virgen-Ortíz JJ, Gorines BC, Otero C, Fernandez-Lafuente R. Physical crosslinking of lipase from Rhizomucor miehei immobilized on octyl agarose via coating with ionic polymers. Process Biochem 2017. [DOI: 10.1016/j.procbio.2016.12.018] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Balasubramanian V, Correia A, Zhang H, Fontana F, Mäkilä E, Salonen J, Hirvonen J, Santos HA. Biomimetic Engineering Using Cancer Cell Membranes for Designing Compartmentalized Nanoreactors with Organelle-Like Functions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605375. [PMID: 28112838 DOI: 10.1002/adma.201605375] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 12/08/2016] [Indexed: 05/18/2023]
Abstract
A new biomimetic nanoreactor design is presented based on cancer cell membrane material in combination with porous silicon nanoparticles. This cellular nanoreactor features a biocompartment enclosed by a cell membrane and readily integrated with cells and supplementing the cellular functions under oxidative stress. The study demonstrates the impact of the nanoreactors on improving cellular functions with a potential to serve as artificial organelles.
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Affiliation(s)
- Vimalkumar Balasubramanian
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI, 00014, Helsinki, Finland
| | - Alexandra Correia
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI, 00014, Helsinki, Finland
| | - Hongbo Zhang
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI, 00014, Helsinki, Finland
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
| | - Flavia Fontana
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI, 00014, Helsinki, Finland
| | - Ermei Mäkilä
- Laboratory of Industrial Physics, University of Turku, FI, 20014, Turku, Finland
| | - Jarno Salonen
- Laboratory of Industrial Physics, University of Turku, FI, 20014, Turku, Finland
| | - Jouni Hirvonen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI, 00014, Helsinki, Finland
| | - Hélder A Santos
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI, 00014, Helsinki, Finland
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40
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Vescovi V, Kopp W, Guisán JM, Giordano RL, Mendes AA, Tardioli PW. Improved catalytic properties of Candida antarctica lipase B multi-attached on tailor-made hydrophobic silica containing octyl and multifunctional amino- glutaraldehyde spacer arms. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.09.016] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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41
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Nanoclays for Lipase Immobilization: Biocatalyst Characterization and Activity in Polyester Synthesis. Polymers (Basel) 2016; 8:polym8120416. [PMID: 30974694 PMCID: PMC6432194 DOI: 10.3390/polym8120416] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 11/24/2016] [Accepted: 11/28/2016] [Indexed: 11/17/2022] Open
Abstract
The immobilization of Candida antarctica lipase B (CALB) was performed by physical adsorption on both neat and organo-modified forms of sepiolite and montmorillonite. The influence of different parameters, e.g., solvent, enzyme loading, cross-linking, and type of clay support, on immobilization efficiency and catalyst hydrolytic activity has been investigated. The highest hydrolytic activities were obtained for CALB immobilized on organo-modified clay minerals, highlighting the beneficial effect of organo-modification. The esterification activity of these CALB/organoclay catalysts was also tested in the ring-opening polymerization of ε-caprolactone. The polymerization kinetics observed for clay-immobilized catalysts confirmed that CALB adsorbed on organo-modified montmorillonite (CALB/MMTMOD) was the highest-performing catalytic system.
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42
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Nanostructuring Biomaterials with Specific Activities towards Digestive Enzymes for Controlled Gastrointestinal Absorption of Lipophilic Bioactive Molecules. Adv Colloid Interface Sci 2016; 237:52-75. [PMID: 28314428 DOI: 10.1016/j.cis.2016.10.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 10/18/2016] [Accepted: 10/18/2016] [Indexed: 11/24/2022]
Abstract
This review describes the development of novel lipid-based biomaterials that modulate fat digestion for the enhanced uptake of encapsulated lipophilic bioactive compounds (e.g. drugs and vitamins). Specific focus is directed towards analysing how key material characteristics affect the biological function of digestive lipases and manipulate lipolytic digestion. The mechanism of lipase action is a complex, interfacial process, whereby hydrolysis can be controlled by the ability for lipase to access and adsorb to the lipid-in-water interface. However, significant conjecture exists within the literature regarding parameters that influence the activities of digestive lipases. Important findings from recent investigations that strategically examined the interplay between the interfacial composition of the lipid microenvironment and lipolysis kinetics in simulated biophysical environments are presented. The correlation between lipolysis and the rate of solubilisation and absorption of lipophilic compounds in the gastrointestinal tract (GIT) is detailed. Greater insights into the mechanism of lipase action have provided a new approach for designing colloidal carriers that orally deliver poorly soluble compounds, directly impacting the pharmaceutical and food industries.
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43
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Virgen-Ortíz JJ, Tacias-Pascacio VG, Hirata DB, Torrestiana-Sanchez B, Rosales-Quintero A, Fernandez-Lafuente R. Relevance of substrates and products on the desorption of lipases physically adsorbed on hydrophobic supports. Enzyme Microb Technol 2016; 96:30-35. [PMID: 27871382 DOI: 10.1016/j.enzmictec.2016.09.010] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 09/07/2016] [Accepted: 09/19/2016] [Indexed: 01/24/2023]
Abstract
Lipase B from Candida antarctica (CALB) has been physically immobilized on octyl-agarose via interfacial activation. The incubation of the enzyme in 80% ethanol at pH 5 and 25°C has not significant effect on enzyme activity. Moreover, the hydrolysis of 100mM tributyrin catalyzed by this biocatalyst exhibited a quite linear reaction course. However, a new cycle of tributyrin hydrolysis showed a drastic drop in the activity. SDS-PAGE gels of the supernatant and the biocatalyst showed a significant enzyme desorption after the reaction. Similar results could be appreciated using triacetin or sunflower oil, while using 300mM methyl phenyl acetate, butyl butyrate or ethyl butyrate most enzyme molecules remained immobilized. The results show that the detergent properties of some reaction products increase the enzyme release from the hydrophobic support, and this problem increased if the concentration of the reactants increased. Using 500mM tributyrin, even in fully aqueous medium, some enzyme desorption from the support may be observed. Thus, the results show a limitation of this kind of biocatalysts that should be considered in the selection of an industrial lipase biocatalyst.
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Affiliation(s)
- Jose J Virgen-Ortíz
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM-CSIC, Madrid, Spain; Catedrático CONACYT - Centro de Investigación en Alimentación y Desarrollo, A.C., Centro de Innovación y Desarrollo Agroalimentario de Michoacán, A.C., Antigua Carretera a Pátzcuaro s/n, 58341, Morelia, Michoacán, Mexico
| | - Veymar G Tacias-Pascacio
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM-CSIC, Madrid, Spain; Unidad de Investigación y Desarrollo en Alimentos, Instituto Tecnológico de Veracruz, Calzada Miguel A. de Quevedo 2779, 91897, Veracruz, Mexico
| | - Daniela B Hirata
- Instituto de Química, Universidade Federal de Alfenas, 37130-000, Alfenas, MG, Brazil
| | - Beatriz Torrestiana-Sanchez
- Unidad de Investigación y Desarrollo en Alimentos, Instituto Tecnológico de Veracruz, Calzada Miguel A. de Quevedo 2779, 91897, Veracruz, Mexico
| | - Arnulfo Rosales-Quintero
- Instituto Tecnológico de Tuxtla Gutiérrez, Carretera Panamericana Km. 1080, Tuxtla Gutiérrez, Chiapas, Mexico
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44
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Clementz AL, Del Peso G, Canet A, Yori JC, Valero F. Utilization of discard bovine bone as a support for immobilization of recombinantRhizopus oryzaelipase expressed inPichia pastoris. Biotechnol Prog 2016; 32:1246-1253. [DOI: 10.1002/btpr.2321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 05/12/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Adriana L. Clementz
- Institute for Research on Catalysis and Petrochemistry (INCAPE) FIQ-UNL-CONICET, Parque Tecnológico Litoral Centro; 3000 Santa Fe Argentina
| | - Gonzalo Del Peso
- Dept. of Chemical, Biological and Environmental Engineering; Escola d'Enginyeria, Universitat Autónoma de Barcelona; Bellaterra 08193 Barcelona España
| | - Albert Canet
- Dept. of Chemical, Biological and Environmental Engineering; Escola d'Enginyeria, Universitat Autónoma de Barcelona; Bellaterra 08193 Barcelona España
| | - Juan C. Yori
- Institute for Research on Catalysis and Petrochemistry (INCAPE) FIQ-UNL-CONICET, Parque Tecnológico Litoral Centro; 3000 Santa Fe Argentina
| | - Francisco Valero
- Dept. of Chemical, Biological and Environmental Engineering; Escola d'Enginyeria, Universitat Autónoma de Barcelona; Bellaterra 08193 Barcelona España
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45
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Joyce P, Kempson I, Prestidge CA. Orientating lipase molecules through surface chemical control for enhanced activity: A QCM-D and ToF-SIMS investigation. Colloids Surf B Biointerfaces 2016; 142:173-181. [DOI: 10.1016/j.colsurfb.2016.02.059] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 02/23/2016] [Accepted: 02/25/2016] [Indexed: 11/16/2022]
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46
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Immobilization of a novel cold active esterase onto Fe3O4∼cellulose nano-composite enhances catalytic properties. Int J Biol Macromol 2016; 87:488-97. [DOI: 10.1016/j.ijbiomac.2016.03.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 03/08/2016] [Accepted: 03/09/2016] [Indexed: 01/27/2023]
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47
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Covalently immobilized lipase on aminoalkyl-, carboxy- and hydroxy-multi-wall carbon nanotubes in the enantioselective synthesis of Solketal esters. Enzyme Microb Technol 2016; 87-88:61-9. [DOI: 10.1016/j.enzmictec.2016.02.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 02/15/2016] [Accepted: 02/29/2016] [Indexed: 11/23/2022]
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48
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Prlainović NŽ, Bezbradica DI, Rogan JR, Uskoković PS, Mijin DŽ, Marinković AD. Surface functionalization of oxidized multi-walled carbon nanotubes: Candida rugosa lipase immobilization. CR CHIM 2016. [DOI: 10.1016/j.crci.2015.10.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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49
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50
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Mohammadzade S, Beig Parikhani A, Askari H. Assessment of Behavior of Rice Root Peroxidase in the Presence of Silver Nanoparticles. AVICENNA JOURNAL OF MEDICAL BIOCHEMISTRY 2016. [DOI: 10.17795/ajmb-30943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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