201
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Luong TQ, Winter R. Combined pressure and cosolvent effects on enzyme activity – a high-pressure stopped-flow kinetic study on α-chymotrypsin. Phys Chem Chem Phys 2015; 17:23273-8. [DOI: 10.1039/c5cp03529e] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pressure enhances the hydrolysis of peptides catalysed by α-CT, which is efficiently and differently modulated by chaotropic and kosmotropic cosolvents.
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Affiliation(s)
- Trung Quan Luong
- Department of Chemistry and Chemical Biology
- TU Dortmund University
- D-44221 Dortmund
- Germany
| | - Roland Winter
- Department of Chemistry and Chemical Biology
- TU Dortmund University
- D-44221 Dortmund
- Germany
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202
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Medina-Meza IG, Barnaba C, Villani F, Barbosa-Cánovas GV. Effects of thermal and high pressure treatments in color and chemical attributes of an oil-based spinach sauce. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2014.09.033] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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203
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Schuabb V, Czeslik C. Activation volumes of enzymes adsorbed on silica particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:15496-15503. [PMID: 25479476 DOI: 10.1021/la503605x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The immobilization of enzymes on carrier particles is useful in many biotechnological processes. In this way, enzymes can be separated from the reaction solution by filtering and can be reused in several cycles. On the other hand, there is a series of examples of free enzymes in solution that can be activated by the application of pressure. Thus, a potential loss of enzymatic activity upon immobilization on carrier particles might be compensated by pressure. In this study, we have determined the activation volumes of two enzymes, α-chymotrypsin (α-CT) and horseradish peroxidase (HRP), when they are adsorbed on silica particles and free in solution. The experiments have been carried out using fluorescence assays under pressures up to 2000 bar. In all cases, activation volumes were found to depend on the applied pressure, suggesting different compressions of the enzyme-substrate complex and the transition state. The volume profiles of free and adsorbed HRP are similar. For α-CT, larger activation volumes are found in the adsorbed state. However, up to about 500 bar, the enzymatic reaction of α-CT, which is adsorbed on silica particles, is characterized by a negative activation volume. This observation suggests that application of pressure might indeed be useful to enhance the activity of enzymes on carrier particles.
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Affiliation(s)
- Vitor Schuabb
- Department of Chemistry and Chemical Biology, TU Dortmund University , D-44221 Dortmund, Germany
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204
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Abstract
The deep biosphere is composed of very different biotopes located in the depth of the oceans, the ocean crust or the lithosphere. Although very different, deep biosphere biotopes share one common feature, high hydrostatic pressure. The deep biosphere is colonized by specific organisms, called piezophiles, that are able to grow under high hydrostatic pressure. Bacterial piezophiles are mainly psychrophiles belonging to five genera of γ-proteobacteria, Photobacterium, Shewanella, Colwellia, Psychromonas and Moritella, while piezophilic Archaea are mostly (hyper)thermophiles from the Thermococcales. None of these genera are specific for the deep biosphere. High pressure deeply impacts the activity of cells and cellular components, and reduces the activity of numerous key processes, eventually leading to cell death of piezosensitive organisms. Biochemical and genomic studies yield a fragmented view on the adaptive mechanisms in piezophiles. It is yet unclear whether piezophilic adaptation requires the modification of a few genes, or metabolic pathways, or a more profound reorganization of the genome, the fine tuning of gene expression to compensate the pressure-induced loss of activity of the proteins most affected by high pressure, or a stress-like physiological cell response. In contrast to what has been seen for thermophily or halophily, the adaptation to high pressure is diffuse in the genome and may concern only a small fraction of the genes.
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205
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Zelena K, Eisele N, Berger RG. Escherichia coli as a production host for novel enzymes from basidiomycota. Biotechnol Adv 2014; 32:1382-95. [DOI: 10.1016/j.biotechadv.2014.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 08/14/2014] [Accepted: 08/25/2014] [Indexed: 01/14/2023]
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206
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Huang W, Ji H, Liu S, Zhang C, Chen Y, Guo M, Hao J. Inactivation effects and kinetics of polyphenol oxidase from Litopenaeus vannamei by ultra-high pressure and heat. INNOV FOOD SCI EMERG 2014. [DOI: 10.1016/j.ifset.2014.10.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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207
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Duong T, Balaban M. Optimisation of the process parameters of combined high hydrostatic pressure and dense phase carbon dioxide on enzyme inactivation in feijoa (Acca sellowiana) puree using response surface methodology. INNOV FOOD SCI EMERG 2014. [DOI: 10.1016/j.ifset.2014.09.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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208
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Enzymatic activities in different strains isolated from healthy and brittle leaf disease affected date palm leaves: study of amylase production conditions. Appl Biochem Biotechnol 2014; 175:2075-86. [PMID: 25432343 DOI: 10.1007/s12010-014-1409-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Accepted: 11/14/2014] [Indexed: 10/24/2022]
Abstract
The present study aimed to investigate and compare the enzymatic production of endophytic bacteria isolated from healthy and brittle leaf disease affected date palm leaves (pectinase, cellulase, lipase, and amylase). The findings revealed that the enzymatic products from the bacterial isolates of healthy date palm leaves were primarily 33% amylolytic enzyme, 33 % cellulase, 25 % pectinase, and 25 % lipase. The isolates from brittle leaf disease date palm leaves, on the other hand, were noted to produce 16 % amylolytic enzyme, 20 % cellulose, 50 % pectinase, and 50 % lipase. The effects of temperature and pH on amylase, pectinase, and cellulose activities were investigated. The Bacillus subtilis JN934392 strain isolated from healthy date palm leaves produced higher levels of amylase activity at pH 7. A Box Behnken Design (BBD) was employed to optimize amylase extraction. Maximal activity was observed at pH and temperature ranges of pH 6-6.5 and 37-39 °C, respectively. Under those conditions, amylase activity was noted to be attained 9.37 U/ml. The results showed that the enzyme was able to maintain more than 50 % of its activity over a temperature range of 50-80 °C, with an optimum at 70 °C. This bacterial amylase showed high activity compared to other bacteria, which provides support for its promising candidacy for future industrial application.
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209
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Kim YK, Iwahashi H. Properties of Polysaccharides Extracted fromPhellinus LinteusUsing High Hydrostatic Pressure Processing and Hot Water Treatment. J FOOD PROCESS ENG 2014. [DOI: 10.1111/jfpe.12153] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Young-Kyung Kim
- The United Graduate School of Agricultural Science; Gifu University; 1-1 Yanagido Gifu City 501-1193 Japan
| | - Hitoshi Iwahashi
- The United Graduate School of Agricultural Science; Gifu University; 1-1 Yanagido Gifu City 501-1193 Japan
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210
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Processing of protease under sub- and supercritical conditions for activity and stability enhancement. Biochem Eng J 2014. [DOI: 10.1016/j.bej.2014.06.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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211
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Swami Hulle NR, Kaushik N, Rao PS. Effect of High Pressure Processing on Rheological Properties, Pectinmethylesterase Activity and Microbiological Characteristics of Aloe Vera (Aloe barbadensisMiller) Juice. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2014. [DOI: 10.1080/10942912.2014.923907] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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212
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Chakraborty S, Kaushik N, Rao PS, Mishra HN. High-Pressure Inactivation of Enzymes: A Review on Its Recent Applications on Fruit Purees and Juices. Compr Rev Food Sci Food Saf 2014; 13:578-596. [PMID: 33412700 DOI: 10.1111/1541-4337.12071] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Accepted: 03/10/2014] [Indexed: 11/29/2022]
Abstract
In the last 2 decades high-pressure processing (HPP) has established itself as one of the most suitable nonthermal technologies applied to fruit products for the extension of shelf-life. Several oxidative and pectic enzymes are responsible for deterioration in color, flavor, and texture in fruit purees and juices (FP&J). The effect of HPP on the activities of polyphenoloxidase, peroxidase, β-glucosidase, pectinmethylesterase, polygalacturonase, lipoxygenase, amylase, and hydroperoxide lyase specific to FP&J have been studied by several researchers. In most of the cases, partial inactivation of the target enzymes was possible under the experimental domain, although their pressure sensitivity largely depended on the origin and their microenvironmental condition. The variable sensitivity of different enzymes also reflects on their kinetics. Several empirical models have been established to describe the kinetics of an enzyme specific to a FP&J. The scientific literature in the last decade illustrating the effects of HPP on enzymes in FP&J, enzymatic action on those products, mechanism of enzyme inactivation during high pressure, their inactivation kinetics, and several intrinsic and extrinsic factors influencing the efficacy of HPP is critically reviewed in this article. In addition, process optimization of HPP targeting specific enzymes is of great interest from an industrial approach. This review will give a fair idea about the target enzymes specific to FP&J and the optimum conditions needed to achieve sufficient inactivation during HPP treatment.
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Affiliation(s)
- Snehasis Chakraborty
- Agricultural and Food Engineering Dept, Indian Inst. of Technology, Kharagpur, 721302, India
| | - Neelima Kaushik
- Agricultural and Food Engineering Dept, Indian Inst. of Technology, Kharagpur, 721302, India
| | - P Srinivasa Rao
- Agricultural and Food Engineering Dept, Indian Inst. of Technology, Kharagpur, 721302, India
| | - H N Mishra
- Agricultural and Food Engineering Dept, Indian Inst. of Technology, Kharagpur, 721302, India
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213
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Todde G, Hovmöller S, Laaksonen A, Mocci F. Glucose oxidase from Penicillium amagasakiense: characterization of the transition state of its denaturation from molecular dynamics simulations. Proteins 2014; 82:2353-63. [PMID: 24810265 DOI: 10.1002/prot.24596] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 03/22/2014] [Accepted: 04/29/2014] [Indexed: 01/07/2023]
Abstract
Glucose oxidase (GOx) is a flavoenzyme having applications in food and medical industries. However, GOx, as many other enzymes when extracted from the cells, has relatively short operational lifetimes. Several recent studies (both experimental and theoretical), carried out on small proteins (or small fractions of large proteins), show that a detailed knowledge of how the breakdown process starts and proceeds on molecular level could be of significant help to artificially improve the stability of fragile proteins. We have performed extended molecular dynamics (MD) simulations to study the denaturation of GOx (a protein dimer containing nearly 1200 amino acids) to identify weak points in its structure and in this way gather information to later make it more stable, for example, by mutations. A denaturation of a protein can be simulated by increasing the temperature far above physiological temperature. We have performed a series of MD simulations at different temperatures (300, 400, 500, and 600 K). The exit from the protein's native state has been successfully identified with the clustering method and supported by other methods used to analyze the simulation data. A common set of amino acids is regularly found to initiate the denaturation, suggesting a moiety where the enzyme could be strengthened by a suitable amino acid based modification.
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Affiliation(s)
- Guido Todde
- Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden
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214
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High-pressure Processing: Kinetic Models for Microbial and Enzyme Inactivation. FOOD ENGINEERING REVIEWS 2014. [DOI: 10.1007/s12393-014-9075-x] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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215
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Herbst D, Peper S, Fernández JF, Ruck W, Niemeyer B. Pressure effects on activity and selectivity of Candida rugosa lipase in organic solvents. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2013.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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216
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Bashari M, Abdelhai MH, Abbas S, Eibaid A, Xu X, Jin Z. Effect of ultrasound and high hydrostatic pressure (US/HHP) on the degradation of dextran catalyzed by dextranase. ULTRASONICS SONOCHEMISTRY 2014; 21:76-83. [PMID: 23751456 DOI: 10.1016/j.ultsonch.2013.04.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 04/25/2013] [Accepted: 04/30/2013] [Indexed: 06/02/2023]
Abstract
In our current research work, the effect of combination of ultrasonic irradiation and high hydrostatic pressure (US/HHP) on the enzymatic activity and enzymatic hydrolysis kinetic parameters of dextran catalytic by dextranase were investigated. Furthermore, the effects of US/HHP on the structure of dextranase were also discussed with the aid of fluorescence spectroscopy and circular dichroism (CD) spectroscopy. The maximum hydrolysis of dextran was observed under US (40 W at 25 kHz for 15 min) combined with HHP (400 MPa for 25 min), in which the hydrolysis of dextran increased by 163.79% compared with the routine thermal incubation at 50 °C. Results also showed that, Vmax and KM values, as well as, kcat of dextranase under US/HHP treatment were higher than that under US, HHP and thermal incubation at 50 °C, indicated that, the substrate is converted into the product at an increased rate when compared with the incubation at 50 °C. Compared to the enzymatic reaction under US, HHP, and routine thermal incubation, dextranase enzymatic reaction under US/HHP treatment showed decreases in Ea, ΔG and ΔH, however small increase in ΔS value was observed. In addition, fluorescence and CD spectra reflected that US/HHP treatment had increased the number of tryptophan on dextranase surface with increased α-helix by 19.80% and reduced random coil by 6.94% upon US/HHP-treated dextranase protein compared to the control, which were helpful for the improvement of its activity. These results indicated that, the combination of US and HHP treatments could be an effective method for improving the hydrolysis of dextran in many industrial applications including sugar manufacturing processes.
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Affiliation(s)
- Mohanad Bashari
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; Department of Food Science and Technology, Faculty of Engineering and Technology, University of Gezira, P.O. Box 20, Wad Madani, Sudan.
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217
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High pressure processing of fresh meat — Is it worth it? Meat Sci 2013; 95:897-903. [DOI: 10.1016/j.meatsci.2013.03.025] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 03/21/2013] [Accepted: 03/22/2013] [Indexed: 11/23/2022]
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218
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Ortuño C, Duong T, Balaban M, Benedito J. Combined high hydrostatic pressure and carbon dioxide inactivation of pectin methylesterase, polyphenol oxidase and peroxidase in feijoa puree. J Supercrit Fluids 2013. [DOI: 10.1016/j.supflu.2013.06.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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219
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Liplap P, Boutin J, LeBlanc DI, Vigneault C, Vijaya Raghavan GS. Effect of hyperbaric pressure and temperature on respiration rates and quality attributes of Boston lettuce. Int J Food Sci Technol 2013. [DOI: 10.1111/ijfs.12288] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pansa Liplap
- Department of Bioresource Engineering; Macdonald Campus; McGill University; Sainte-Anne-de-Bellevue QC H9X 3V9 Canada
- Horticulture Research and Development Centre; Agriculture and Agri-Food Canada; 430 boul. Gouin Saint-Jean-sur-Richelieu QC J3B 3E6 Canada
| | - Jérôme Boutin
- Horticulture Research and Development Centre; Agriculture and Agri-Food Canada; 430 boul. Gouin Saint-Jean-sur-Richelieu QC J3B 3E6 Canada
| | - Denyse I. LeBlanc
- Atlantic Food and Horticulture Research Centre; Agriculture and Agri-Food Canada; c/o Food Research Centre; Université de Moncton; Moncton NB E1A 3E9 Canada
| | - Clément Vigneault
- Horticulture Research and Development Centre; Agriculture and Agri-Food Canada; 430 boul. Gouin Saint-Jean-sur-Richelieu QC J3B 3E6 Canada
| | - G. S. Vijaya Raghavan
- Department of Bioresource Engineering; Macdonald Campus; McGill University; Sainte-Anne-de-Bellevue QC H9X 3V9 Canada
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220
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Chen D, Zhang H, Xu J, Yan Y. Effect of sub- and supercritical CO2 treatment on the properties of Pseudomonas cepacia lipase. Enzyme Microb Technol 2013; 53:110-7. [DOI: 10.1016/j.enzmictec.2013.04.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 04/18/2013] [Accepted: 04/18/2013] [Indexed: 11/30/2022]
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221
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Treatment of immobilized α-amylase under supercritical CO2 conditions: Can activity be enhanced after consecutive enzymatic reactions? ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.03.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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222
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Tomlin B, Jones S, Reyes-De-Corcuera J. High hydrostatic pressure protection of a pectinase cocktail against thermal inactivation. J FOOD ENG 2013. [DOI: 10.1016/j.jfoodeng.2013.01.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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223
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Qiu C, Xia W, Jiang Q. Effect of high hydrostatic pressure (HHP) on myofibril-bound serine proteinases and myofibrillar protein in silver carp (Hypophthalmichthys molitrix). Food Res Int 2013. [DOI: 10.1016/j.foodres.2013.03.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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224
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225
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Davydov DR, Sineva EV, Davydova NY, Bartlett DH, Halpert JR. CYP261 enzymes from deep sea bacteria: a clue to conformational heterogeneity in cytochromes P450. Biotechnol Appl Biochem 2013; 60:30-40. [PMID: 23586990 DOI: 10.1002/bab.1083] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Accepted: 12/14/2012] [Indexed: 11/12/2022]
Abstract
We have explored the adaptation of the cytochromes P450 (P450) of deep-sea bacteria to high hydrostatic pressures. Strict conservation of the protein fold and functional importance of protein-bound water make P450 a unique subject for the studies of high-pressure adaptation. Earlier, we expressed and purified a fatty-acid binding P450 from the deep-sea bacteria Photobacterium profundum SS9 (CYP261C1). Here, we report purification and initial characterization of its mesophilic ortholog from the shallow-water P. profundum 3TCK (CYP261C2), as well as another piezophilic enzyme, CYP261D1, from deep-sea Moritella sp. PE36. Comparison of the three enzymes revealed a striking peculiarity of the piezophilic enzymes. Both CYP261C1 and CYP261D1 possess an apparent pressure-induced conformational toggle actuated at the pressures commensurate with the physiological pressure of habitation of the host bacteria. Furthermore, in contrast to CYP261C2, the piezophilic CYP261 enzymes may be chromatographically separated into two fractions with different properties, and different thermodynamic parameters of spin equilibrium in particular. According to our concept, the changes in the energy landscape that evolved in pressure-tolerant enzymes must stabilize the less-hydrated, closed conformers, which may be transient in the catalytic mechanisms of nonpiezophilic enzymes. The studies of enzymes of piezophiles should help unravel the mechanisms that control water access during the catalytic cycle.
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Affiliation(s)
- Dmitri R Davydov
- Skaggs School of Pharmacy and Pharmaceutical Science, University of California, San Diego, La Jolla, CA, USA.
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226
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Dhake KP, Thakare DD, Bhanage BM. Lipase: A potential biocatalyst for the synthesis of valuable flavour and fragrance ester compounds. FLAVOUR FRAG J 2013. [DOI: 10.1002/ffj.3140] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Kishor P. Dhake
- Department of Chemistry; Institute of Chemical Technology; Matunga; Mumbai; 400 019; India
| | - Dinesh D. Thakare
- Department of Chemistry; Institute of Chemical Technology; Matunga; Mumbai; 400 019; India
| | - Bhalchandra M. Bhanage
- Department of Chemistry; Institute of Chemical Technology; Matunga; Mumbai; 400 019; India
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227
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Kirsch C, Dahms J, Kostko AF, McHugh MA, Smirnova I. Pressure assisted stabilization of biocatalysts at elevated temperatures: characterization by dynamic light scattering. Biotechnol Bioeng 2013; 110:1674-80. [PMID: 23280599 DOI: 10.1002/bit.24825] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 10/22/2012] [Accepted: 12/10/2012] [Indexed: 11/09/2022]
Abstract
The effect of pressure, at elevated temperatures, is reported on the activity and stability of a thermophilic endo-β-glucanase from the filamentous fungus Talaromyces emersonii. The production of reduced sugars after treatment at different temperatures and pressures is used as a measure of the activity and stability of the enzyme. The activity of the enzyme is maintained to higher temperatures with increasing pressure. For example, the relative activity of endo-β-glucanase decreases to 30% after 4 h at 75°C and 1 bar, whereas it is preserved at 100% after 6 h at 75°C and 230 bar. High-pressure dynamic light scattering is used to characterize the hydrodynamic radius of the enzyme as a function of pressure, temperature, and time. At higher temperature the hydrodynamic radius increases with time, whereas increasing pressure suppresses this effect. Changes in the hydrodynamic radius are correlated with the activity measurements obtained at elevated pressures, since the changes in the hydrodynamic radius indicate structural changes of the enzyme, which cause the deactivation.
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Affiliation(s)
- Christian Kirsch
- Institute of Thermal Separation Processes, Technical University Hamburg-Harburg, Hamburg 21073, Germany
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228
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Bayramoglu G, Akbulut A, Arica MY. Immobilization of tyrosinase on modified diatom biosilica: enzymatic removal of phenolic compounds from aqueous solution. JOURNAL OF HAZARDOUS MATERIALS 2013; 244-245:528-536. [PMID: 23245881 DOI: 10.1016/j.jhazmat.2012.10.041] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 10/19/2012] [Accepted: 10/19/2012] [Indexed: 06/01/2023]
Abstract
Acid and plasma treated diatom-biosilica particles, were modified with 3-aminopropyl triethoxysilane (APTES), and activated with glutaraldehyde. Then, tyrosinase was immobilized onto the pre-activated biosilica by covalent bonding. The biosilica properties were determined using SEM, and FTIR. The enzyme system has been characterized as a function of pH, temperature and substrate concentration. Optimum pH of the free and immobilized enzyme was found to be pH 7.0. Optimum temperatures of the free and immobilized enzymes were determined as 35 and 45 °C respectively. The biodegradation of phenolic compounds (i.e., phenol, para-cresol and phenyl acetate) has been studied by means of immobilized tyrosinase in a batch system. The immobilized tyrosinase retained about 74% of its original activity after 10 times repeated use in the batch system. Moreover, the storage stability of the tyrosinase-biosilica system resulted excellent, since they maintained more than 67% of the initial activity after eighth week storage. Highly porous structure of biosilica can provide large surface area for immobilization of high quantity enzyme. The porous structure of the biosilica can decrease diffusion limitation both substrate phenols and their products. Finally, the immobilized tyrosinase was used in a batch system for degradation of three different phenols.
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Affiliation(s)
- Gulay Bayramoglu
- Biochemical Processing and Biomaterial Research Laboratory, Faculty of Science, Gazi University, 06500 Teknikokullar, Ankara, Turkey.
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229
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Benito-Román Ó, Alonso E, Cocero M. Pressurized hot water extraction of β-glucans from waxy barley. J Supercrit Fluids 2013. [DOI: 10.1016/j.supflu.2012.09.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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230
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Lerbret A, Hédoux A, Annighöfer B, Bellissent-Funel MC. Influence of pressure on the low-frequency vibrational modes of lysozyme and water: A complementary inelastic neutron scattering and molecular dynamics simulation study. Proteins 2012; 81:326-40. [DOI: 10.1002/prot.24189] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Revised: 07/27/2012] [Accepted: 09/19/2012] [Indexed: 11/06/2022]
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231
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Zhang Z, Jiang B, Liao X, Yi J, Hu X, Zhang Y. Inactivation of Bacillus subtilis spores by combining high-pressure thermal sterilization and ethanol. Int J Food Microbiol 2012. [PMID: 23177048 DOI: 10.1016/j.ijfoodmicro.2012.10.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
High-pressure thermal sterilization (HPTS) is a new and promising sterilization technology of foods. Effects of combining HPTS and ethanol treatment on inactivation of Bacillus subtilis spores were investigated. An interesting phenomenon was observed. The inactivation effect of HPTS treatment on the spores was enhanced significantly with the increase in ethanol concentration from 0 to 15%. However, the inactivation effect was decreased with further increase in ethanol concentration up to 70%. In addition, the release of DPA and leakages of OD(260) and OD(280) material from the spores increased continuously with the increase in ethanol concentration. Moreover, flow cytometry analysis suggested that although the inner membrane of the spores was damaged, PI could not bind with the spore DNA immediately after HPTS treatment. In conclusion, the mechanism of this special phenomenon could be attributed to the germination of spores under HPTS treatment and effects of ethanol on the protein or water activity. HPTS caused other lethal damages to the spores besides its damage to the inner membrane. Ethanol of low concentrations could significantly enhance the sterilization effects of HPTS, which was good for keeping the qualities of foods.
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Affiliation(s)
- Zhong Zhang
- College of Food Science and Nutritional Engineering, National Engineering Research Center for Fruits and Vegetables Processing, China Agricultural University, Beijing, 100083, China
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232
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Silva MF, Golunski SM, Rigo D, Mossi V, Luccio MD, Mazutti MA, Oliveira DD, Oliveira JV, Treichel H. Pressurized Propane: An Alternative Technique to Increase Inulinase Activity. Ind Biotechnol (New Rochelle N Y) 2012. [DOI: 10.1089/ind.2012.0021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | | | - Diane Rigo
- Department of Food Engineering, Universidade Regional Integrada, Erechim, Brazil
| | - Vinícius Mossi
- Department of Food Engineering, Universidade Regional Integrada, Erechim, Brazil
| | - Marco Di Luccio
- Department of Chemistry and Food Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Marcio A. Mazutti
- Department of Chemical Engineering, Federal University of Santa Maria, Santa Maria, Brazil
| | - Débora de Oliveira
- Department of Chemistry and Food Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
| | - J. Vladimir Oliveira
- Department of Chemistry and Food Engineering, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Helen Treichel
- Chemistry and Food School, Federal University of Rio Grande, Rio Grande, Brazil
- Federal University of Fronteira Sul, Erechim, Brazil
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233
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Lipase-catalyzed synthesis of poly(e-caprolactone) in supercritical carbon dioxide. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2012. [DOI: 10.1016/j.bcab.2012.04.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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234
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Sustainable production of pectin from lime peel by high hydrostatic pressure treatment. Food Chem 2012; 136:472-8. [PMID: 23122086 DOI: 10.1016/j.foodchem.2012.08.036] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 08/15/2012] [Accepted: 08/17/2012] [Indexed: 11/20/2022]
Abstract
The application of high hydrostatic pressure technology for enzymatic extraction of pectin was evaluated. Cellulase and xylanase under five different combinations (cellulase/xylanase: 50/0, 50/25, 50/50, 25/50, and 0/50 U/g lime peel) at ambient pressure, 100 and 200 MPa were used to extract pectin from dried lime peel. Extraction yield, galacturonic acid (GalA) content, average molecular weight (M(w,ave)), intrinsic viscosity [η](w), and degree of esterification (DE) were compared to those parameters obtained for pectins extracted using acid and aqueous processes. Pressure level, type and concentration of enzyme significantly (p<0.05) influenced yield and DE of pectin. Enzyme and high pressure extraction resulted in yields which were significantly (p<0.05) higher than those using acid and aqueous extraction. Although pressure-induced enzymatic treatment improves pectin yield, it does not have any significant effect on M(w,ave) and [η](w) of pectin extracts indicating the potential of high pressure treatment for enzymatic pectin production as a novel and sustainable process.
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235
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Ahn J, Jung MC, Wyndham K, Yu YQ, Engen JR. Pepsin immobilized on high-strength hybrid particles for continuous flow online digestion at 10,000 psi. Anal Chem 2012; 84:7256-62. [PMID: 22856522 DOI: 10.1021/ac301749h] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Pepsin was immobilized on ethyl-bridged hybrid (BEH) particles, and digestion performance was evaluated in a completely online format, with the specific intent of using the particles for hydrogen-deuterium exchange mass spectrometry (HDX MS) experiments. Because the BEH particles are mechanically strong, they could withstand prolonged, continuous high-pressure at 10,000 psi. Online digestion was performed under isobaric conditions with continuous solvent flow, in contrast to other approaches where the pressure or flow is cycled. As expected, digestion efficiency at 10,000 psi was increased and reproducibly produced more peptic peptides versus digestion at 1000 psi. Prototype columns made with the BEH pepsin particles exhibited robust performance, and deuterium back-exchange was similar to that of other immobilized pepsin particles. These particles can be easily incorporated in existing HDX MS workflows to provide more peptide coverage in experiments where fast, efficient, and reproducible online pepsin digestion is desired.
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Affiliation(s)
- Joomi Ahn
- Department of Chemistry & Chemical Biology, Northeastern University, Boston, Massachusetts 02115, USA
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236
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Manera AP, Zabot GL, Vladimir Oliveira J, de Oliveira D, Mazutti MA, Kalil SJ, Treichel H, Filho FM. Enzymatic synthesis of galactooligosaccharides using pressurised fluids as reaction medium. Food Chem 2012. [DOI: 10.1016/j.foodchem.2012.02.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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237
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Segovia-Bravo K, Guignon B, Bermejo-Prada A, Sanz P, Otero L. Hyperbaric storage at room temperature for food preservation: A study in strawberry juice. INNOV FOOD SCI EMERG 2012. [DOI: 10.1016/j.ifset.2012.02.005] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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238
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Terefe NS, Sheean P, Fernando S, Versteeg C. The stability of almond β-glucosidase during combined high pressure-thermal processing: a kinetic study. Appl Microbiol Biotechnol 2012; 97:2917-28. [PMID: 22644526 DOI: 10.1007/s00253-012-4162-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2011] [Revised: 05/08/2012] [Accepted: 05/10/2012] [Indexed: 01/02/2023]
Abstract
The thermal and the combined high pressure-thermal inactivation kinetics of almond β-glucosidase (β-D-glucoside glucohydrolase, EC 3.2.1.21) were investigated at pressures from 0.1 to 600 MPa and temperatures ranging from 30 to 80 °C. Thermal treatments at temperatures higher than 50 °C resulted in significant inactivation with complete inactivation after 2 min of treatment at 80 °C. Both the thermal and high pressure inactivation kinetics were described well by first-order model. Application of pressure increased the inactivation kinetics of the enzyme except at moderate temperatures (50 to 70 °C) and pressures between 0.1 and 100 MPa where slight pressure stabilisation of the enzyme against thermal denaturation was observed. The activation energy for the inactivation of the enzyme at atmospheric pressure was estimated to be 216.2±8.6 kJ/mol decreasing to 55.2±3.9 kJ/mol at 600 MPa. The activation volumes were negative at all temperature conditions excluding the temperature-pressure range where slight pressure stabilisation was observed. The values of the activation volumes were estimated to be -29.6±0.6, -29.8±1.7, -20.6±3.2, -41.2±4.8, -36.5±1.8, -39.6±4.3, -31.0±4.5 and -33.8±3.9 cm3/mol at 30, 35, 40, 45, 50, 60, 65 and 70 °C, respectively, with no clear trend with temperature. The pressure-temperature dependence of the inactivation rate constants was well described by an empirical third-order polynomial model.
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239
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Jolie RP, Christiaens S, De Roeck A, Fraeye I, Houben K, Van Buggenhout S, Van Loey AM, Hendrickx ME. Pectin conversions under high pressure: Implications for the structure-related quality characteristics of plant-based foods. Trends Food Sci Technol 2012. [DOI: 10.1016/j.tifs.2011.11.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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240
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Follonier S, Panke S, Zinn M. Pressure to kill or pressure to boost: a review on the various effects and applications of hydrostatic pressure in bacterial biotechnology. Appl Microbiol Biotechnol 2012; 93:1805-15. [DOI: 10.1007/s00253-011-3854-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 12/17/2011] [Accepted: 12/19/2011] [Indexed: 02/02/2023]
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241
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Zetzl C, Gairola K, Kirsch C, Perez-Cantu L, Smirnova I. Ein-Reaktor-Konzept zur Hochdruckfraktionierung lignocellulosehaltiger Biomasse. CHEM-ING-TECH 2011. [DOI: 10.1002/cite.201100161] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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242
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Clariana M, Hortós M, García-Regueiro J, Castellari M. Effect of high pressure processing on the level of some purines and pyrimidines nucleosides and bases in dry cured and cooked ham. Meat Sci 2011; 89:533-5. [DOI: 10.1016/j.meatsci.2011.01.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Revised: 01/18/2011] [Accepted: 01/28/2011] [Indexed: 11/24/2022]
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243
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Toldrà M, Parés D, Saguer E, Carretero C. Hemoglobin hydrolysates from porcine blood obtained through enzymatic hydrolysis assisted by high hydrostatic pressure processing. INNOV FOOD SCI EMERG 2011. [DOI: 10.1016/j.ifset.2011.05.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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244
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Dhake KP, Deshmukh KM, Patil YP, Singhal RS, Bhanage BM. Improved activity and stability of Rhizopus oryzae lipase via immobilization for citronellol ester synthesis in supercritical carbon dioxide. J Biotechnol 2011; 156:46-51. [DOI: 10.1016/j.jbiotec.2011.08.019] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2011] [Revised: 08/01/2011] [Accepted: 08/11/2011] [Indexed: 11/16/2022]
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245
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Senyay-Oncel D, Yesil-Celiktas O. Activity and stability enhancement of α-amylase treated with sub- and supercritical carbon dioxide. J Biosci Bioeng 2011; 112:435-40. [PMID: 21824817 DOI: 10.1016/j.jbiosc.2011.07.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 06/17/2011] [Accepted: 07/10/2011] [Indexed: 11/17/2022]
Abstract
Various physical, chemical and genetic approaches have been applied in order to enhance enzyme stability and activity. In this study, the aim was to investigate the capability of sub- and supercritical carbon dioxide to alter the stability and activity of α-amylase as an alternative technique. The effects of operational parameters such as pressure (50-300 bar), temperature (28-80 °C), CO₂ flow (2-10 g min⁻¹) and time (60-180 min) were evaluated in regard to the activity and stability of fungal based α-amylase from Aspergillus oryzea. The activity of untreated enzyme was determined as 17,726 μmol/ml/min. While both sub- and supercritical conditions enhanced the activity, the increase in flow rate had an adverse effect and the activity was decreased by 28.9% at a flow rate of 10 g min⁻¹ under supercritical conditions. Nuclear magnetic resonance (NMR) spectra of untreated enzyme and treated samples exhibiting the lowest and the highest activities were almost identical except for the chemical shifts observed at the lowest activity sample from 4.0 to 4.4 ppm which were assigned to protons of hydrogen-bonded groups. Optimum conditions were determined as 240 bar, 41 °C, 4 g min⁻¹ CO₂ flow and 150 min of process duration yielding 67.7% (29,728 μmol/ml/min) higher activity than the untreated enzyme providing fundamental basis for enzymatic applications.
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Affiliation(s)
- Deniz Senyay-Oncel
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100 Bornova-Izmir, Turkey
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246
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Zetzl C, Gairola K, Kirsch C, Perez-Cantu L, Smirnova I. High Pressure Processes in Biorefineries. CHEM-ING-TECH 2011. [DOI: 10.1002/cite.201100025] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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247
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Aguieiras ECG, Veloso CO, Bevilaqua JV, Rosas DO, da Silva MAP, Langone MAP. Estolides synthesis catalyzed by immobilized lipases. Enzyme Res 2011; 2011:432746. [PMID: 21755040 PMCID: PMC3132484 DOI: 10.4061/2011/432746] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Revised: 03/06/2011] [Accepted: 04/07/2011] [Indexed: 11/20/2022] Open
Abstract
Estolides are vegetable-oil-based lubricants obtained from oleic acid or any source of hydroxy fatty acids. In this work, the estolides synthesis from oleic acid and methyl ricinoleate (biodiesel from castor oil), using immobilized commercial lipases (Novozym 435, Lipozyme RM-IM, and Lipozyme TL-IM) in a solvent-free medium was investigated. Acid value was used to monitor the reaction progress by determining the consumption of acid present in the medium. Novozym 435 showed the best performance. Water removal improved the conversion. Novozym 435 was more active at atmospheric pressure. Novozym 435 was reused four times with conversion reaching 15% after the fourth reaction at 80°C. Estolides produced under the reaction conditions used in this work presented good properties, such as, low temperature properties as pour point (−24°C), viscosity (23.9 cSt at 40°C and 5.2 cSt at 100°C), and viscosity index (153).
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Affiliation(s)
- Erika C G Aguieiras
- Escola de Química, Universidade Federal do Rio de Janeiro, Avenida Athos da Silveira Ramos, 149, 21949-909 Rio de Janeiro, RJ, Brazil
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248
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Yang Y, Liao X, Hu X, Zhang Y, Chen F, Wu J. The contribution of high pressure carbon dioxide in the inactivation kinetics and structural alteration of myrosinase. Int J Food Sci Technol 2011. [DOI: 10.1111/j.1365-2621.2011.02614.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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249
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Kirsch C, Wörmeyer K, Zetzl C, Smirnova I. Enzymatische Hydrolyse von Lignocellulose im Festbettreaktor. CHEM-ING-TECH 2011. [DOI: 10.1002/cite.201000204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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250
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Effect of compressed fluids treatment on the activity, stability and enzymatic reaction performance of β-galactosidase. Food Chem 2011. [DOI: 10.1016/j.foodchem.2010.10.040] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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