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Peroxidase from waste cabbage (Brassica oleracea capitata L.) exhibits the potential to biodegrade phenol and synthetic dyes from wastewater. SCIENTIFIC AFRICAN 2020. [DOI: 10.1016/j.sciaf.2020.e00608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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Rayan A, Morsy N. Thermal inactivation kinetics of peroxidase and polyphenol oxidase from pomegranate arils (Punica granatum L. cv. Wonderful). J Food Biochem 2020; 44:e13428. [PMID: 32794233 DOI: 10.1111/jfbc.13428] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/19/2020] [Accepted: 07/22/2020] [Indexed: 10/23/2022]
Abstract
Thermal inactivation of peroxidase (POD) and polyphenol oxidase (PPO) in both pomegranate arils crude enzyme extract and fresh juice was investigated. The optimum conditions for reactions were studied using a mixture of guaiacol and H2O2 as substrate for POD and pyrogallol for PPO. The experimental work indicated that optimum pH for both enzymes was 7.0; meanwhile optimum temperature was 30°C for POD and 25°C for PPO. Michaelis-Menten constant (Km) values for POD were 8.33 and 8.00 mM for guaiacol and H2O2, respectively. The Km value was 5.88 mM pyrogallol for PPO. Thermal inactivation results revealed that the inactivation kinetics followed a monophasic first-order model. Activation energies (Ea) were 74.68 and 112.97 kJ/mol for POD and PPO, respectively. Therefore, POD was more heat-stable than PPO. This result is very useful to optimize pomegranate processing (canning or freezing), which represents the most important food industries in many tropical and subtropical regions. PRACTICAL APPLICATIONS: Pomegranate has been attracted more interest due to its antioxidant and nutritional values. For industrial applications, there is a growing interest to obtain pomegranate products such as juice, jams, food supplements, etc. It is well established that the residual activities of endogenous enzymes in either raw materials or processed products may cause loss of quality during storage. Inhibition of enzymatic browning is an important factor to maintain pomegranate quality. This work offers a better insight of characterization of browning enzymes and their thermosatbility, which will be useful to control the possible browning of pomegranate arils during processing and storage. In addition, the results of this study is very important in pomegranate processing where it showed a higher temperature with shortened time can be applied.
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Affiliation(s)
- Ahmed Rayan
- Department of Food Technology, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt
| | - Noha Morsy
- Department of Food Science & Technology (Home Economics Branch), Faculty of Agriculture, Suez Canal University, Ismailia, Egypt
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Kandil OM, El-Hakim AE, Gad AAM, Abu El-Ezz NMT, Mahmoud MS, Hendawy SHM, Salama DB. Camel hydatidosis diagnostic kit: optimization of turnip and horseradish peroxidase conjugates using glutaraldehyde method. J Parasit Dis 2019; 44:230-238. [PMID: 32174729 DOI: 10.1007/s12639-019-01186-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 12/05/2019] [Indexed: 12/11/2022] Open
Abstract
Echinococcosis/hydatidosis is one of the most important parasitic zoonotic diseases in the world. Cystic echinococcosis increases public health and socio-economic concern due to considerable morbidity rates that give rise to elevated economic losses both in the public health part and in the farm animal field. The enzyme linked immunosorbent assay (ELISA) is consider the more accurate tool for diagnosis of hydatidosis in camels. In the present study, affinity purified Echinococcus granulosus (E. granulosus) antigens (APA) were purified from crude hydatide E. granulosus germinal layer proteins for detection of E. granulosus antibodies in infected camels, using affinity matrix (camel IgGs coupled to CNBr-activated Sepharose). The electrophoretic profile of the APA showed that it was separated into two bands; one major band of 130 kDa and one minor band at 55 kDa. These antigens were used successfully as specific coating antigenic proteins in detection of echinococcosis in camel. In a trial to prepare an anti-camel IgGs peroxidase conjugate; peroxidase enzyme was purified from turnip roots (TPOD) using ammonium sulfate precipitation and affinity chromatography on phenyl Sepharose CL-4B. The purified TPOD showed a major band at 35 kDa. Rabbit anti-camel IgG antibodies (AC IgGs) were prepared then purified using affinity chromatography on Protein G-Sepharose. The TPOD, and commercial HRP for comparison, enzymes were conjugated to AC IgGs using 1%, 5% and 10% glutaraldehyde. The results revealed that the HRP was much better than TPOD in conjugation with AC-IgG antibodies and the 10% glutaraldehyde concentration was the most efficient concentration with ELISA titer 1:50.
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Affiliation(s)
- Omnia M Kandil
- 1Parasitology and Animal Diseases Department, Veterinary Research Division, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12622 Egypt
| | - Amr E El-Hakim
- 2Molecular Biology Department, Genetic Engineering and Biotechnology Division, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12622 Egypt
| | - Abdul Aziz M Gad
- 2Molecular Biology Department, Genetic Engineering and Biotechnology Division, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12622 Egypt
| | - Nadia M T Abu El-Ezz
- 1Parasitology and Animal Diseases Department, Veterinary Research Division, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12622 Egypt
| | - Mona S Mahmoud
- 1Parasitology and Animal Diseases Department, Veterinary Research Division, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12622 Egypt
| | - Seham H M Hendawy
- 1Parasitology and Animal Diseases Department, Veterinary Research Division, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12622 Egypt
| | - Dina B Salama
- 1Parasitology and Animal Diseases Department, Veterinary Research Division, National Research Centre, 33 El Buhouth St., Dokki, Cairo, 12622 Egypt
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Guarin-Guio PA, Cano-Calle HDJ, Castillo-León JJ. Detección electroquímica de peróxido de hidrógeno usando peroxidasa de pasto Guinea (Panicum maximum) inmovilizada sobre electrodos serigrafiados de puntos cuánticos. REVISTA ION 2019. [DOI: 10.18273/revion.v32n2-2019007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Los biosensores electroquímicos son herramientas analíticas de rápida y confiable respuesta que han adquirido especial interés en los últimos años gracias a la posibilidad de integrar biomoléculas con electrodos hechos a base de materiales nanométricos. En este trabajo se desarrolló un biosensor electroquímico para detección de peróxido de hidrógeno (H2O2) usando peroxidasa de pasto Guinea (PPG) inmovilizada sobre electrodos serigrafiados de puntos cuánticos (ESPC). La PPG fue aislada y parcialmente purificada a partir de hojas de pasto Guinea con una actividad específica de 602 U mg-1. Posteriormente, la PPG fue inmovilizada sobre la superficie del ESPC mediante adsorción física y el estudio del comportamiento electroquímico fue llevado a cabo mediante voltamperometría cíclica y cronoamperometría. La PPG reveló una pareja bien definida de señales redox a 17 mV/-141 mV correspondientes al proceso redox del grupo hemo (Fe2+/Fe3+) de las peroxidasas. La reducción bioelectrocatalítica del peróxido de hidrógeno se observó a un potencial redox de -645 mV vs Ag. Este proceso fue controlado por difusión de las especies en la superficie del electrodo en un rango de velocidad de barrido lineal de 50-500 mV/s. La cronoamperometría permitió la construcción de curvas de calibración entre la corriente de reducción y la concentración del H2O2 para la determinación de parámetros analíticos como sensibilidad, rango lineal y nivel mínimo de detección. El desarrollo de este biosensor amperométrico se convierte en un paso preliminar para la construcción de un dispositivo portátil y de respuesta rápida para el análisis de H2O2 en muestras de interés ambiental y biomédico.
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Abdel-Aty AM, Hamed MB, Gad AAM, El-Hakim AE, Mohamed SA. Ficus sycomorus latex: An efficient alternative Egyptian source for horseradish peroxidase in labeling with antibodies for immunodiagnostic kits. Vet World 2018; 11:1364-1370. [PMID: 30532487 PMCID: PMC6247892 DOI: 10.14202/vetworld.2018.1364-1370] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 08/16/2018] [Indexed: 11/22/2022] Open
Abstract
Aim: In view of various peroxidase applications, the searching for new sources of unique peroxidase properties is highly desirable. The present study aims to evaluate the efficiency of the peroxidase of locally grown sycamore latex (POL) for conjugation with antibodies and to study the conjugate optimal conditions, storage stability, and affinity toward different substrates as compared with commercial horseradish peroxidase (HRP). Materials and Methods: Anti-mouse antibodies were prepared in rabbits and purified by protein A sepharose affinity column chromatography. The POL and HRP conjugates were prepared by one-step glutaraldehyde coupling method. The reactivity of the prepared conjugates was examined using the enzyme-linked immunosorbent assay (ELISA). The optimal enzymatic conditions, storage stability, and affinity toward substrates were also determined for both the conjugates. Results: The POL showed higher percent recovery (98%) than HRP (78%) over the initial activity after conjugation process. The POL and HRP conjugates showed ELISA titers of 1:120 and 1:80, respectively, demonstrating high binding affinity of POL-conjugate. The POL-conjugate showed high thermal stability up to 70°C compared with HRP-conjugate up to 40°C. After conjugation, POL had wide pH stability (5.0-8.0) compared with HPR (4.5-6.0). Both of the prepared conjugates had a high affinity toward the substrates used in immunoassays with lower Km values. The POL-conjugate showed high storage stability for its enzymatic activity and ELISA titer compared with HRP-conjugate after 1 year at −20°C. Conclusion: The POL of Ficus sycomorus latex is an efficient source for labeling antibodies and could be utilized in immunodiagnostic kits.
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Affiliation(s)
- Azza M Abdel-Aty
- Molecular Biology Department, National Research Centre, Dokki, Cairo, Egypt
| | | | - Abdul Aziz M Gad
- Molecular Biology Department, National Research Centre, Dokki, Cairo, Egypt
| | - Amr E El-Hakim
- Molecular Biology Department, National Research Centre, Dokki, Cairo, Egypt
| | - Saleh A Mohamed
- Molecular Biology Department, National Research Centre, Dokki, Cairo, Egypt
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A new peroxidase from leaves of guinea grass ( Panicum maximum ): A potential biocatalyst to build amperometric biosensors. Bioelectrochemistry 2017; 116:33-38. [DOI: 10.1016/j.bioelechem.2017.03.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 03/27/2017] [Accepted: 03/27/2017] [Indexed: 11/21/2022]
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Singh S, Singh R, Bhushan Jha A, Misra AN, Sharma P. Amorphophallus paeoniifolius corm: A potential source of peroxidase for wide applications. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2017. [DOI: 10.1080/10942912.2016.1247363] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Shikha Singh
- Centre for Life Sciences, Central University of Jharkhand, Brambe, Ranchi, India
| | - Rajani Singh
- Centre for Life Sciences, Central University of Jharkhand, Brambe, Ranchi, India
| | - Ambuj Bhushan Jha
- Crop Development Centre, Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| | | | - Pallavi Sharma
- Centre for Life Sciences, Central University of Jharkhand, Brambe, Ranchi, India
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Kowalewska B, Jakubow K. Bioelectrocatalytic Activity of Immobilized Alcohol Oxidase on 4-(pyrrole-1-yl) Benzoic Acid Modified Carbon Nanotubes. ELECTROANAL 2016. [DOI: 10.1002/elan.201600068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Barbara Kowalewska
- Department of Chemistry; University of Warsaw; Pasteura 1 PL-02-093 Warsaw Poland
| | - Katarzyna Jakubow
- Department of Chemistry; University of Warsaw; Pasteura 1 PL-02-093 Warsaw Poland
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Characterization of Plant Peroxidases and Their Potential for Degradation of Dyes: a Review. Appl Biochem Biotechnol 2015; 176:1529-50. [DOI: 10.1007/s12010-015-1674-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 05/19/2015] [Indexed: 11/27/2022]
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Shank LP, Kijjanapanich P, Phutrakul S, Fongbua N. Characterization of Partially Purified Peroxidase from Fingerroot (Boesenbergia Rotunda (L.) Mansf.). ACTA ACUST UNITED AC 2015. [DOI: 10.12720/jomb.4.3.170-177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Angelini VA, Agostini E, Medina MI, González PS. Use of hairy roots extracts for 2,4-DCP removal and toxicity evaluation by Lactuca sativa test. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:2531-9. [PMID: 24085515 DOI: 10.1007/s11356-013-2172-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 09/16/2013] [Indexed: 05/27/2023]
Abstract
2,4-Dichlorophenol (2,4-DCP) is widely distributed in wastewaters discharged from several industries, and it is considered as a priority pollutant due to its high toxicity. In this study, the use of different peroxidase extracts for 2,4-DCP removal from aqueous solutions was investigated. Tobacco hairy roots (HRs), wild-type (WT), and double-transgenic (DT) for tomato basic peroxidases (TPX1 and TPX2) were used to obtain different peroxidase extracts: total peroxidases (TPx), soluble peroxidases (SPx), and peroxidases ionically bound to the cell wall (IBPx). All extracts derived from DT HRs exhibited higher peroxidase activity than those obtained from WT HRs. TPx and IBPx DT extracts showed the highest catalytic efficiency values. The optimal conditions for 2,4-DCP oxidation were pH 6.5, H2O2 0.5 mM, and 200 U mL(-1) of enzyme, for all extracts analyzed. Although both TPx extracts were able to oxidize different 2,4-DCP concentrations, the removal efficiency was higher for TPx DT. Polyethylene glycol addition slightly improved 2,4-DCP removal efficiency, and it showed some protective effect on TPx WT after 2,4-DCP oxidation. In addition, using Lactuca sativa test, a reduction of the toxicity of post removal solutions was observed, for both TPx extracts. The results demonstrate that TPx extracts from both tobacco HRs appear to be promising candidate for future applications in removing 2,4-DCP from wastewaters. This is particularly true considering that these peroxidase sources are associated with low costs and are readily available. However, TPx DT has increased peroxidase activity, catalytic efficiency, and higher removal efficiency than TPx WT, probably due to the expression of TPX1 and TPX2 isoenzymes.
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Affiliation(s)
- Vanina A Angelini
- Departamento de Biología Molecular, FCEFQN, Universidad Nacional de Río Cuarto, Ruta 36 Km 601, CP 5800, Río Cuarto, Córdoba, Argentina,
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