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Rajesh R, Gummadi SN. Purification and biochemical characterization of novel α-amylase and cellulase from Bacillus sp. PM06. Prep Biochem Biotechnol 2024; 54:796-808. [PMID: 38141162 DOI: 10.1080/10826068.2023.2288574] [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] [Indexed: 12/25/2023]
Abstract
Bacillus sp. PM06, previously isolated from sugarcane waste pressmud, could produce dual enzymes α-amylase and cellulase. The isolate's crude enzymes were purified homogeneously using ammonium sulfate precipitation followed by High Quaternary amine anion exchange chromatography. Purified enzymes revealed the molecular weights of α-amylase and cellulase as 55 and 52 kDa, with a purification fold of 15.4 and 11.5, respectively. The specific activity of purified α-amylase and cellulase were 740.7 and 555.6 U/mg, respectively. It demonstrated a wide range of activity from pH 5.0 to 8.5, with an optimum pH of 5.5 and 6.4 for α-amylase and cellulase. The optimum temperature was 50 °C for α-amylase and 60 °C for cellulase. The kinetic parameters of purified α-amylase were 741.5 ± 3.75 µmol/min/mg, 1.154 ± 0.1 mM, and 589 ± 3.5/(s mM), using starch as a substrate. Whereas cellulase showed 556.3 ± 1.3 µmol/min/mg, 1.78 ± 0.1 mM, and 270.9 ± 3.8/(s mM) of Vmax, Km, Kcat/Km, respectively, using carboxymethyl cellulose (CMC) as substrate. Among the various substrates tested, α-amylase had a higher specificity for amylose and CMC for cellulase. Different inhibitors and activators were also examined. Ca2+ Mg2+, Co2+, and Mn2+ boosted α-amylase and cellulase activities. Cu2+ and Ni2+ both inhibited the enzyme activities. Enzymatic saccharification of wheat bran yielded 253.61 ± 1.7 and 147.5 ± 1.0 mg/g of reducing sugar within 12 and 24 h of incubation when treated with purified α-amylase and cellulase. A more significant amount of 397.7 ± 1.9 mg/g reducing sugars was released from wheat bran due to the synergetic effect of two enzymes. According to scanning electron micrograph analysis, wheat bran was effectively broken down by both enzymes.
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Affiliation(s)
- Rekha Rajesh
- Applied and Industrial Microbiology Laboratory, Department of Biotechnology, BJM School of Biosciences, Indian Institute of Technology Madras, Chennai, India
| | - Sathyanarayana N Gummadi
- Applied and Industrial Microbiology Laboratory, Department of Biotechnology, BJM School of Biosciences, Indian Institute of Technology Madras, Chennai, India
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Kadriye İnan Bektas. Isolation and Molecular Identification of Xylanase and Glucose-Isomerase Producer Geobacillus and Brevibacillus Strains from Hot Springs in Turkey. BIOL BULL+ 2022. [DOI: 10.1134/s1062359021150085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Rajesh R, Gummadi SN. α-Amylase and cellulase production by novel halotolerant Bacillus sp.PM06 isolated from sugarcane pressmud. Biotechnol Appl Biochem 2020; 69:149-159. [PMID: 33369761 DOI: 10.1002/bab.2091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 12/13/2020] [Indexed: 11/11/2022]
Abstract
A novel Bacillus sp.PM06 isolated from sugarcane waste pressmud was tested for extracellular α-amylase and cellulase enzyme production. The effect of different substrates, nitrogen sources, pH, and temperature on growth and extracellular enzyme production was examined. Bacillus sp.PM06 was able to grow with starch and carboxymethyl cellulose (CMC) as a sole source of carbon and ammonium chloride was found to be the best nitrogen source. Maximum enzyme production was obtained at 48 H for both α-amylase and cellulase. The optimal condition for measuring enzyme activity was found to be pH 5.5 at 50 °C for α-amylase and pH 6.4 at 60 °C for cellulase respectively. It was found that Bacillus sp.PM06 exhibited halotolerance up to 2 M Sodium chloride (NaCl) and Potassium chloride (KCl). The isolate could produce α-amylase in the presence of 2 M NaCl and 1 M KCl. However, the strain produced cellulase even in the presence of 2 M NaCl and KCl. Concomitant production of both enzymes was observed when the medium was supplemented with starch and CMC. A maximum of 31 ± 1.15 U/mL of amylase and 15 ± 1.5 U/mL of cellulase was produced in 48 H. The enzyme was partially purified by Ammonium sulphate (NH4 )2 SO4 precipitation with 2.2 and 2.3-fold purification.
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Affiliation(s)
- Rekha Rajesh
- Applied and Industrial Microbiology Laboratory, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India
| | - Sathyanarayana N Gummadi
- Applied and Industrial Microbiology Laboratory, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, India
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Patel K, Dudhagara P. Compatibility testing and enhancing the pulp bleaching process by hydrolases of the newly isolated thermophilic Isoptericola variabilis strain UD-6. BIOCATAL BIOTRANSFOR 2020. [DOI: 10.1080/10242422.2019.1711067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Kartik Patel
- Department of Biosciences, Veer Narmad South Gujarat University, Surat, India
| | - Pravin Dudhagara
- Department of Biosciences, Veer Narmad South Gujarat University, Surat, India
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Reichenberger K, Luz A, Seitl I, Fischer L. Determination of the Direct Activity of the Maltogenic Amylase from Geobacillus stearothermophilus in White Bread. FOOD ANAL METHOD 2019. [DOI: 10.1007/s12161-019-01673-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AbstractAn assay-based method was developed to determine the residual activity of the maltogenic amylase from Geobacillus stearothermophilus in white bread. It was found that the important step for amylase extraction from the bread matrix was the addition of 10% (w/v) maltodextrin in the extraction buffer. The endogenous amylase activity in dough was investigated, and its inactivation during bread baking was proven. Thus, all amylase activities measured after baking have an exogenous origin. The amylase activities in the loaf of self-baked white bread containing defined dosages of exogenous amylase (10–100 μg per g flour) were reproducibly determined with 17.8 ± 1.24% residual activity. Moreover, an amylase activity of 369 ± 34.3 pkat gbread−1 was determined in three batches of a commercial white bread. The real temperature impact on the amylase during bread baking was investigated. The highest temperature in the crumb was 97 °C and, therefore, is significantly lower than the oven temperature (230 °C).
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Tavallaie S, Khomeiri M, Mousivand M, Maghsoudlou Y, Hashemi M. Starches from different sources hydrolysis using a new thermo-tolerant amylase complex produced by Bacillus subtilis T41a: Characterization and efficiency evaluation. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.05.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Allala F, Bouacem K, Boucherba N, Azzouz Z, Mechri S, Sahnoun M, Benallaoua S, Hacene H, Jaouadi B, Bouanane-Darenfed A. Purification, biochemical, and molecular characterization of a novel extracellular thermostable and alkaline α-amylase from Tepidimonas fonticaldi strain HB23. Int J Biol Macromol 2019; 132:558-574. [PMID: 30928371 DOI: 10.1016/j.ijbiomac.2019.03.201] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 01/16/2019] [Accepted: 03/26/2019] [Indexed: 11/25/2022]
Abstract
The present study investigated the purification, biochemical, and molecular characterization of a novel thermostable α-amylase (TfAmy48) from Tepidimonas fonticaldi strain HB23. MALDI-TOF/MS analysis indicated that the purified enzyme is a monomer with a molecular mass of 48,138.10 Da. The results from amino-acid sequence analysis revealed high homology between the 25 NH2-terminal residues of TfAmy48 and those of Gammaproteobacteria α-amylases. The optimum pH and temperature values for α-amylase activity were pH 8 and 80 °C, respectively. Thin-layer chromatography (TLC) analysis showed that the final hydrolyzed products of the enzyme from soluble potato starch were maltopentaose, maltose, and maltotriose, which indicate that TfAmy48 possessed an endo-acting pattern. Compared to Termamyl®300 L, TfAmy48 showed extreme stability and tolerance towards organic solvents and excellent compatibility with some commercial laundry detergents. These proprieties make TfAmy48 enzyme a potential candidate as a cleaning bioadditive in detergent composition. The Tfamy48 gene encoding TfAmy48 was cloned, sequenced, and heterologously-expressed in the extracellular fraction of Escherichia coli strain BL21(DE3)pLysS. The biochemical properties of the extracellular purified recombinant enzyme (rTfAmy48) were similar to those of native one. The highest sequence identity value (97%) was obtained with PsAmy1 α-amylase from Pseudomonas sp. strain KFCC10818, with only 16 amino-acid (aa) residues of difference.
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Affiliation(s)
- Fawzi Allala
- Laboratory of Cellular and Molecular Biology (LCMB), Microbiology Team, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), P.O. Box 32, El Alia, Bab Ezzouar, 16111, Algiers, Algeria; Laboratory of Applied Microbiology (LAM), Faculty of Nature and Life Sciences, University of Bejaïa, Targa Ouzemmour, 06000 Bejaïa, Algeria
| | - Khelifa Bouacem
- Laboratory of Cellular and Molecular Biology (LCMB), Microbiology Team, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), P.O. Box 32, El Alia, Bab Ezzouar, 16111, Algiers, Algeria; Laboratory of Microbial Biotechnology and Engineering Enzymes (LMBEE), Centre of Biotechnology of Sfax (CBS), University of Sfax, Road of Sidi Mansour Km 6, P.O. Box 1177, Sfax 3018, Tunisia
| | - Nawel Boucherba
- Laboratory of Applied Microbiology (LAM), Faculty of Nature and Life Sciences, University of Bejaïa, Targa Ouzemmour, 06000 Bejaïa, Algeria.
| | - Zahra Azzouz
- Laboratory of Applied Microbiology (LAM), Faculty of Nature and Life Sciences, University of Bejaïa, Targa Ouzemmour, 06000 Bejaïa, Algeria
| | - Sondes Mechri
- Laboratory of Microbial Biotechnology and Engineering Enzymes (LMBEE), Centre of Biotechnology of Sfax (CBS), University of Sfax, Road of Sidi Mansour Km 6, P.O. Box 1177, Sfax 3018, Tunisia
| | - Mouna Sahnoun
- Laboratory of Microbial Biotechnology and Engineering Enzymes (LMBEE), Centre of Biotechnology of Sfax (CBS), University of Sfax, Road of Sidi Mansour Km 6, P.O. Box 1177, Sfax 3018, Tunisia
| | - Said Benallaoua
- Laboratory of Applied Microbiology (LAM), Faculty of Nature and Life Sciences, University of Bejaïa, Targa Ouzemmour, 06000 Bejaïa, Algeria
| | - Hocine Hacene
- Laboratory of Cellular and Molecular Biology (LCMB), Microbiology Team, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), P.O. Box 32, El Alia, Bab Ezzouar, 16111, Algiers, Algeria
| | - Bassem Jaouadi
- Laboratory of Microbial Biotechnology and Engineering Enzymes (LMBEE), Centre of Biotechnology of Sfax (CBS), University of Sfax, Road of Sidi Mansour Km 6, P.O. Box 1177, Sfax 3018, Tunisia; Biotech ECOZYM Start-up, Business Incubator, Centre of Biotechnology of Sfax (CBS), University of Sfax, Road of Sidi Mansour Km 6, P.O. Box 1177, Sfax 3018, Tunisia
| | - Amel Bouanane-Darenfed
- Laboratory of Cellular and Molecular Biology (LCMB), Microbiology Team, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene (USTHB), P.O. Box 32, El Alia, Bab Ezzouar, 16111, Algiers, Algeria.
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Mantiri FR, Rumende RRH, Sudewi S. Identification of α-amylase gene by PCR and activity of thermostable α-amylase from thermophilic Anoxybacillus thermarum isolated from Remboken hot spring in Minahasa, Indonesia. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1755-1315/217/1/012045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Awasthi MK, Wong JWC, Kumar S, Awasthi SK, Wang Q, Wang M, Ren X, Zhao J, Chen H, Zhang Z. Biodegradation of food waste using microbial cultures producing thermostable α-amylase and cellulase under different pH and temperature. BIORESOURCE TECHNOLOGY 2018; 248:160-170. [PMID: 28709882 DOI: 10.1016/j.biortech.2017.06.160] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 06/27/2017] [Accepted: 06/28/2017] [Indexed: 06/07/2023]
Abstract
The aim of this work was to study the biodegradation of food waste employing thermostable α-amylase and cellulase enzymes producing bacteria. Four potential isolates were identified which were capable of producing maximum amylase and cellulase and belong to the amylolytic strains, Brevibacillus borstelensis and Bacillus licheniformis; cellulolytic strains, Bacillus thuringiensis and Bacillus licheniformis, respectively. These strains were selected based on its higher cell density, enzymatic activities and stability at a wide range of pH and temperature compared to other strains. The results indicated that 1:1 ratio of pre and post consumed food wastes (FWs) were helpful to facilitate the degradation employing bacterial consortium. In addition, organic matter decomposition and chemical parameters of the end product quality also indicated that bacterial consortium was very effective for 1:1 ratio of FWs degradation as compared to the other treatments.
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Affiliation(s)
- Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China; Department of Biotechnology, Amicable Knowledge Solution University, Satna, Madhya Pradesh, India
| | - Jonathan W C Wong
- Sino-Forest Applied Research Centre for Pearl River Delta Environment and Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - Sunil Kumar
- Solid and Hazardous Waste Management Division, CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nagpur 440 020, Maharashtra, India
| | | | - Quan Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Meijing Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Xiuna Ren
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Junchao Zhao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Hongyu Chen
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.
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Gómez-Govea MA, García S, Heredia N. Bacterial metabolites from intra- and inter-species influencing thermotolerance: the case of Bacillus cereus and Geobacillus stearothermophilus. Folia Microbiol (Praha) 2016; 62:183-189. [PMID: 27896600 DOI: 10.1007/s12223-016-0487-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 11/23/2016] [Indexed: 11/29/2022]
Abstract
Bacterial metabolites with communicative functions could provide protection against stress conditions to members of the same species. Yet, information remains limited about protection provided by metabolites in Bacillus cereus and inter-species. This study investigated the effect of extracellular compounds derived from heat shocked (HS) and non-HS cultures of B. cereus and Geobacillus stearothermophilus on the thermotolerance of non-HS vegetative and sporulating B. cereus. Cultures of B. cereus and G. stearothermophilus were subjected to HS (42 or 65 °C respectively for 30 min) or non-HS treatments. Cells and supernatants were separated, mixed in a combined array, and then exposed to 50 °C for 60 min and viable cells determined. For spores, D values (85 and 95 °C) were evaluated after 120 h. In most cases, supernatants from HS B. cereus cultures added to non-HS B. cereus cells caused their thermotolerance to increase (D 50 12.2-51.9) when compared to supernatants from non-HS cultures (D 50 7.4-21.7). While the addition of supernatants from HS and non-HS G. stearothermophilus cultures caused the thermotolerance of non-HS cells from B. cereus to decrease initially (D 50 3.7-7.1), a subsequent increase was detected in most cases (D 50 18-97.7). In most cases, supernatants from sporulating G. stearothermophilus added to sporulating cells of B. cereus caused the thermotolerance of B. cereus 4810 spores to decline, whereas that of B. cereus 14579 increased. This study clearly shows that metabolites in supernatants from either the same or different species (such as G. stearothermophilus) influence the thermotolerance of B. cereus.
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Affiliation(s)
- Mayra Alejandra Gómez-Govea
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Laboratorio de Bioquímica y Genética de Microorganismos, Ciudad Universitaria, 66455, San Nicolás de los Garza, N.L, Mexico
| | - Santos García
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Laboratorio de Bioquímica y Genética de Microorganismos, Ciudad Universitaria, 66455, San Nicolás de los Garza, N.L, Mexico
| | - Norma Heredia
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Laboratorio de Bioquímica y Genética de Microorganismos, Ciudad Universitaria, 66455, San Nicolás de los Garza, N.L, Mexico.
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Dey TB, Kumar A, Banerjee R, Chandna P, Kuhad RC. Improvement of microbial α-amylase stability: Strategic approaches. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.06.021] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Moshi AP, Hosea KMM, Elisante E, Mamo G, Önnby L, Nges IA. Production of raw starch-degrading enzyme by Aspergillus sp. and its use in conversion of inedible wild cassava flour to bioethanol. J Biosci Bioeng 2015; 121:457-63. [PMID: 26481161 DOI: 10.1016/j.jbiosc.2015.09.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 08/28/2015] [Accepted: 09/03/2015] [Indexed: 11/15/2022]
Abstract
The major bottlenecks in achieving competitive bioethanol fuel are the high cost of feedstock, energy and enzymes employed in pretreatment prior to fermentation. Lignocellulosic biomass has been proposed as an alternative feedstock, but because of its complexity, economic viability is yet to be realized. Therefore, research around non-conventional feedstocks and deployment of bioconversion approaches that downsize the cost of energy and enzymes is justified. In this study, a non-conventional feedstock, inedible wild cassava was used for bioethanol production. Bioconversion of raw starch from the wild cassava to bioethanol at low temperature was investigated using both a co-culture of Aspergillus sp. and Saccharomyces cerevisiae, and a monoculture of the later with enzyme preparation from the former. A newly isolated strain of Aspergillus sp. MZA-3 produced raw starch-degrading enzyme which displayed highest activity of 3.3 U/mL towards raw starch from wild cassava at 50°C, pH 5.5. A co-culture of MZA-3 and S. cerevisiae; and a monoculture of S. cerevisiae and MZA-3 enzyme (both supplemented with glucoamylase) resulted into bioethanol yield (percentage of the theoretical yield) of 91 and 95 at efficiency (percentage) of 84 and 96, respectively. Direct bioconversion of raw starch to bioethanol was achieved at 30°C through the co-culture approach. This could be attractive since it may significantly downsize energy expenses.
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Affiliation(s)
- Anselm P Moshi
- Division of Biotechnology, Lund University, P. O. Box 124, SE-221 00 Lund, Sweden; Department of Molecular Biology and Biotechnology, College of Natural and Applied Sciences, University of Dar es Salaam, P. O. Box 35179, Tanzania; Tanzania Industrial Research and Development Organization (TIRDO), Kimweri Avenue, P. O. Box 23235, Dar es Salaam, Tanzania
| | - Ken M M Hosea
- Department of Molecular Biology and Biotechnology, College of Natural and Applied Sciences, University of Dar es Salaam, P. O. Box 35179, Tanzania
| | - Emrode Elisante
- Department of Molecular Biology and Biotechnology, College of Natural and Applied Sciences, University of Dar es Salaam, P. O. Box 35179, Tanzania
| | - Gashaw Mamo
- Division of Biotechnology, Lund University, P. O. Box 124, SE-221 00 Lund, Sweden
| | - Linda Önnby
- Division of Biotechnology, Lund University, P. O. Box 124, SE-221 00 Lund, Sweden
| | - Ivo Achu Nges
- Division of Biotechnology, Lund University, P. O. Box 124, SE-221 00 Lund, Sweden.
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Manivasagan P, Venkatesan J, Kang KH, Sivakumar K, Park SJ, Kim SK. Production of α-amylase for the biosynthesis of gold nanoparticles using Streptomyces sp. MBRC-82. Int J Biol Macromol 2015; 72:71-8. [DOI: 10.1016/j.ijbiomac.2014.07.045] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 07/28/2014] [Accepted: 07/28/2014] [Indexed: 10/24/2022]
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Abstract
This article surveys methods for the enzymatic conversion of starch, involving hydrolases and nonhydrolyzing enzymes, as well as the role of microorganisms producing such enzymes. The sources of the most common enzymes are listed. These starch conversions are also presented in relation to their applications in the food, pharmaceutical, pulp, textile, and other branches of industry. Some sections are devoted to the fermentation of starch to ethanol and other products, and to the production of cyclodextrins, along with the properties of these products. Light is also shed on the enzymes involved in the digestion of starch in human and animal organisms. Enzymatic processes acting on starch are useful in structural studies of the substrates and in understanding the characteristics of digesting enzymes. One section presents the application of enzymes to these problems. The information that is included covers the period from the early 19th century up to 2009.
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KOYAMA K, SHONO J, TAGUCHI H, TORIBA A, HAYAKAWA K. Effect of Starch on the Inactivation of Amylase in Starch-Containing Foods. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2013. [DOI: 10.3136/fstr.19.989] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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16
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Kumar V, Sahai V, Bisaria V. Production of amylase and chlamydospores by Piriformospora indica, a root endophytic fungus. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2012. [DOI: 10.1016/j.bcab.2012.02.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Pancha I, Jain D, Shrivastav A, Mishra SK, Shethia B, Mishra S, V P M, Jha B. A thermoactive alpha-amylase from a Bacillus sp. isolated from CSMCRI salt farm. Int J Biol Macromol 2010; 47:288-91. [PMID: 20417228 DOI: 10.1016/j.ijbiomac.2010.04.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 04/06/2010] [Accepted: 04/14/2010] [Indexed: 10/19/2022]
Abstract
Amylases are the most important hydrolytic enzymes for starch-based industries. It is desirable that alpha-amylases should be active at high temperature of gelatinization (100-110 degrees C) and liquefaction (80-90 degrees C) to economize processes. Therefore, thermostable and thermoactive enzyme from natural bacterial strain would have wide industrial importance. In the present study a highly thermoactive and thermostable amylase producing Bacillus sp. was isolated from experimental salt farm of Central Salt and Marine Chemicals Research Institute, yielding 452Uml(-1) amylase in medium containing (%) NaCl 0.5, peptone 0.5, beef extract 0.3, starch 1.0 at 37 degrees C, pH 7.0 after 48h of incubation. Maximum activity of amylase was observed at pH 8.0 and 110 degrees C temperature. The crude enzyme was highly active between pH 6.0 and 11.0 and observed to be active and thermostable after 30min of incubation at 60 degrees C. These properties indicated that the isolated alpha-amylase enzyme is suitable for starch liquefaction and other food processing.
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Affiliation(s)
- Imran Pancha
- Salt Marine and Inorganic Chemicals, Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), G.B. Marg, Bhavnagar 364021, India
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Kubrak OI, Storey JM, Storey KB, Lushchak VI. Production and properties of α-amylase fromBacillussp. BKL20. Can J Microbiol 2010; 56:279-88. [DOI: 10.1139/w10-014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
As a result of screening Bacillus sp. strains isolated from different natural substrates, strain BKL20 was identified as a producer of a thermostable alkaline α-amylase. Maximum production of this α-amylase was achieved by optimizing culture conditions. Production of α-amylase seemed to be independent of the presence of starch in the culture medium and was stimulated by the presence of peptone (0.3%, m/v) and yeast extract (0.2%, m/v). The enzyme was thermostable and retained amylolytic activity after 30 min of incubation at 60 and 70 °C. High activity was maintained over a broad pH range, from 6.0 to 11.0, and the enzyme remained active after alkaline incubation for 24 h. Bacillus sp. BKL20 α-amylase was not stimulated by Ca2+or other bivalent metal cations and was not inhibited by EGTA or EDTA at 1–10 mmol/L, suggesting that this α-amylase is a Ca2+-independent enzyme. It also showed good resistance to both oxidizing (H2O2) and denaturating (urea) agents.
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Affiliation(s)
- Olha I. Kubrak
- Department of Biochemistry, Vassyl Stefanyk Precarpathian National University, 57 Shevchenko Street, Ivano-Frankivsk 76025, Ukraine
- Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
| | - Janet M. Storey
- Department of Biochemistry, Vassyl Stefanyk Precarpathian National University, 57 Shevchenko Street, Ivano-Frankivsk 76025, Ukraine
- Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
| | - Kenneth B. Storey
- Department of Biochemistry, Vassyl Stefanyk Precarpathian National University, 57 Shevchenko Street, Ivano-Frankivsk 76025, Ukraine
- Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
| | - Volodymyr I. Lushchak
- Department of Biochemistry, Vassyl Stefanyk Precarpathian National University, 57 Shevchenko Street, Ivano-Frankivsk 76025, Ukraine
- Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
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Mollania N, Khajeh K, Hosseinkhani S, Dabirmanesh B. Purification and characterization of a thermostable phytate resistant alpha-amylase from Geobacillus sp. LH8. Int J Biol Macromol 2009; 46:27-36. [PMID: 19874846 DOI: 10.1016/j.ijbiomac.2009.10.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2009] [Revised: 10/12/2009] [Accepted: 10/16/2009] [Indexed: 11/19/2022]
Abstract
A thermophilic and amylolytic bacterium (LH8) was isolated from the hot spring of Larijan in Iran at 65 degrees C. Identification of strain LH8 by 16S rDNA sequence analysis showed that LH8 strain belongs to the Geobacillus sp. with 99% sequence similarity with the 16S rDNA of Geobacillus thermodenitrificans. A new alpha-amylase (GA) was extracted from this strain and purified by ion-exchange chromatography. SDS-PAGE showed a single band with an apparent molecular mass of 52kDa. The optimum temperature and pH were 80 degrees C and 5-7, respectively. In the presence of Mn2+, Ca2+, K+, Cr3+ and Al3+, the enzyme activity was stimulated while Mg2+, Ba2+, Ni2+, Zn2+, Fe3+, Cu2+ and EDTA reduced the activity. The K(m) and V(max) values for starch were 3 mg ml(-1) and 6.5 micromol min(-1), respectively. The gene encoding alpha-amylase was isolated and the amino acid sequence was deduced. Comparison of GA and other alpha-amylase amino acid sequences suggested that GA has conserved regions that were previously identified in alpha-amylase family but GA exhibited some substitutions in the sequence. Its phytate resistant is an important property of this enzyme. 5 and 10 mM phytic acid did not inhibit this enzyme. Therefore, features of phytate resistant alpha-amylase from Geobacillus sp. LH8 are discussed.
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Affiliation(s)
- Nasrin Mollania
- Department of Biochemistry, Faculty of Biological Science, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
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20
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Ray R, Kar S, Nayak S, Swain M. Extracellular α-Amylase Production byBacillus brevisMTCC 7521. FOOD BIOTECHNOL 2008. [DOI: 10.1080/08905430802262558] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Kuisiene N, Raugalas J, Stuknyte M, Chitavichius D. Identification of the genus Geobacillus using genus-specific primers, based on the 16S-23S rRNA gene internal transcribed spacer. FEMS Microbiol Lett 2008; 277:165-72. [PMID: 18031336 DOI: 10.1111/j.1574-6968.2007.00954.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The aim of this study was to develop an easy and accurate technique for the identification of the genus Geobacillus. For this purpose, Geobacillus genus-specific primers GEOBAC (GEOBAC-F and GEOBAC-R) based on the 16S-23S rRNA gene internal transcribed spacer (ITS) region sequences have been designed. In total, 52 sequences from three species of the genus Geobacillus (Geobacillus stearothermophilus, Geobacillus kaustophilus and Geobacillus lituanicus) were examined for the design of these primers. Analysis of the sequences revealed three highly conservative regions common to these species: 5' and 3' end regions of 16S-23S rRNA gene ITSs and box A. Some sequences possessed two additional conservative regions - genes of tRNA(Ile) and tRNA(Ala). These particular sequences were chosen for the construction of the primers. The designed primers targeted the gene of tRNA(Ile) and the 3' end region of ITSs. This technique was validated with both the reference strains of the genus Geobacillus and the thermophilic aerobic endospore-forming environmental isolates. Different Geobacillus species could be grouped according to the number and size of GEOBAC-PCR products and identified on the basis of the AluI and TaqI restriction analysis of these products.
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MESH Headings
- Amplified Fragment Length Polymorphism Analysis/methods
- Bacillaceae/classification
- Bacillaceae/genetics
- Bacillaceae/isolation & purification
- Bacteriological Techniques/methods
- Conserved Sequence
- DNA Primers/genetics
- DNA, Bacterial/chemistry
- DNA, Bacterial/genetics
- DNA, Ribosomal Spacer/chemistry
- DNA, Ribosomal Spacer/genetics
- Molecular Sequence Data
- Polymerase Chain Reaction/methods
- Polymorphism, Restriction Fragment Length
- RNA, Transfer, Ala/genetics
- RNA, Transfer, Ile/genetics
- Sequence Analysis, DNA
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Romano I, Calandrelli V, Dipasquale L, Nicolaus B, Lama L. Purification and characterization of calcium independent α-amylase from Geobacillus thermoleovorans subsp. stromboliensis subsp. nov. (DSM 15393). J Biotechnol 2007. [DOI: 10.1016/j.jbiotec.2007.07.426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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. MMB, . NAS, . YRAF. Production, Partial Characterization and Cloning of Thermostable α-amylase of a Thermophile Geobacillus thermoleovorans YN. ACTA ACUST UNITED AC 2007. [DOI: 10.3923/biotech.2007.175.183] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Saxena RK, Dutt K, Agarwal L, Nayyar P. A highly thermostable and alkaline amylase from a Bacillus sp. PN5. BIORESOURCE TECHNOLOGY 2007; 98:260-5. [PMID: 16524725 DOI: 10.1016/j.biortech.2006.01.016] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2005] [Revised: 01/07/2006] [Accepted: 01/18/2006] [Indexed: 05/07/2023]
Abstract
A highly thermostable alkaline amylase producing Bacillus sp. PN5 was isolated from soil, which yielded 65.23 U mL(-1) of amylase in medium containing (%) 0.6 starch, 0.5 peptone and 0.3 yeast extract at 60 degrees C, pH 7.0 after 60 h of incubation. Maximum amylase activity was at pH 10.0 and 90 degrees C. The enzyme retained 80% activity after 1 h at pH 10.0. It exhibited 65% activity at 105 degrees C and had 100% stability in the temperature range between 80 and 100 degrees C for 1 h. In addition, there was 86.36% stability after 1-h incubation with sodium dodecylsulphate. These properties indicated possible use of this amylase in starch saccharification and detergent formulation.
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Affiliation(s)
- Rajendra Kumar Saxena
- Department of Microbiology, University of Delhi South Campus, Benito Juarez Road, New Delhi 110021, India.
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25
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Regulapati R, . PNM, . SNG. Production of Thermostable α-amylases by Solid State Fermentation-A Review. ACTA ACUST UNITED AC 2006. [DOI: 10.3923/ajft.2007.1.11] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Mamo G, Gessesse A. Effect of cultivation conditions on growth and α‐amylase production by a thermophilicBacillussp. Lett Appl Microbiol 2002. [DOI: 10.1046/j.1365-2672.1999.00577.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- G. Mamo
- Department of Biology, Addis Ababa University, Addis Ababa, Ethiopia
| | - A. Gessesse
- Department of Biology, Addis Ababa University, Addis Ababa, Ethiopia
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