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Tian PP, Lv YY, Wei S, Zhang SB, Zheng XT, Hu YS. Antifungal activity of puroindoline protein from soft wheat against grain molds and its potential as a biocontrol agent. Lett Appl Microbiol 2022; 75:114-125. [PMID: 35298847 DOI: 10.1111/lam.13700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 02/22/2022] [Accepted: 03/07/2022] [Indexed: 11/29/2022]
Abstract
Mold growth reduces the quality of stored grains, besides producing toxins that pose a potential threat to human health. Therefore, prevention of grain mold growth during storage is important to ensure a safe and high-quality product, preferably using an eco-friendly antifungal agent. The Puroindoline (PIN) protein was extracted by Triton X-114, and identified by QE mass spectrometry. A. flavus has attracted much attention because of its toxic secondary metabolites, and PIN protein showed a significant inhibition on A. flavus growth. Scanning electron microscopy revealed altered spore morphology of A. flavus following PIN protein treatment, and propidium iodide staining showed incomplete spore cell membranes. The disruption and deformation of A. flavus spores suggest that the cell walls and cell membranes were compromised. Decreased mitochondrial membrane potential and increased levels of intracellular reactive oxygen species (ROS) were detected using JC-1 and 2,7-dichlorodihydrofluorescein diacetate staining, respectively. PIN protein could effectively inhibit the growth and aflatoxins B1 production of A. flavus in stored grains, such as wheat and rice. PIN proteins can inhibit the growth of many common grain storage molds, including Penicillium, Aspergillus spp. (A. flavus, A. glaucus, A. kawachii, A. ochraceus, A. niger), Alternaria, and Fusarium graminearum, in a dose-dependent manner. PIN protein has a significant inhibitory effect on the growth of grain molds, with a stronger inhibitory effect noted in wheat and rice. Our study provides a novel and simple theoretical basis for the selection and storage of mold-resistant in grains and food during storage.
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Affiliation(s)
- Ping-Ping Tian
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China.,College of Food & Bioengineering, Henan University of Science and Technology, Luoyang, 471000, China
| | - Yang-Yong Lv
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Shan Wei
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Shuai-Bing Zhang
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Xiao-Tong Zheng
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Yuan-Sen Hu
- College of Biological Engineering, Henan University of Technology, Zhengzhou, 450001, China
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Toledo L, Aguirre C. Enzymatic browning in avocado (Persea americana) revisited: History, advances, and future perspectives. Crit Rev Food Sci Nutr 2018; 57:3860-3872. [PMID: 27172067 DOI: 10.1080/10408398.2016.1175416] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Considering nearly 80 years of research regarding one of the enzymes responsible for catalyzing the formation of pigments in higher animals, plants, fungi and bacteria, this review will focus on collecting and categorizing the existing information about polyphenol oxidase (PPO) in fruits, with particular emphasis on the information in relation to avocado, which is one of the hardiest species in terms of inactivation, has documented dual activity (EC 1.14.18.1/EC 1.10.3.1), and represents one of the oldest challenges for food science research and fruit processors. It is expected that this review will contribute to the further development of the field by highlighting the questions that have arisen during the characterization of PPO, the progress that has been made and the questions that remain today, in addition to new methodologies that are being applied to study this system. Holistic methodologies offer unexplored potential for advancing our understanding of the complex phenomena that govern PPO activity in fruits, because these methodologies will enable the characterization of this family of enzymes in all of its complexity. Subsequently, it will be possible to develop better techniques for controlling enzymatic browning in this valuable fruit.
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Affiliation(s)
- Lea Toledo
- a School of Food Engineering , Pontificia Universidad Católica de Valparaíso , Valparaíso , Chile
| | - Carolina Aguirre
- b Research Center for Biodiversity and Sustainable Environments (CIBAS) , Universidad Católica de la Santísima Concepción , Concepción , Chile
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Techakanon C, Smith GM, Jernstedt J, Barrett DM. The effect of high pressure processing on clingstone and freestone peach cell integrity and enzymatic browning reactions. INNOV FOOD SCI EMERG 2017. [DOI: 10.1016/j.ifset.2016.12.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Techakanon C, Gradziel TM, Barrett DM. Effects of Peach Cultivar on Enzymatic Browning Following Cell Damage from High-Pressure Processing. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:7606-7614. [PMID: 27626457 DOI: 10.1021/acs.jafc.6b01879] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Peach cultivars contribute to unique product characteristics and may affect the degree of browning after high-pressure processing (HPP). Nine peach cultivars were subjected to HPP at 0, 100, and 400 MPa for 10 min. Proton nuclear magnetic resonance (1H NMR) relaxometry, light microscopy, color, polyphenol oxidase (PPO) activity, and total phenols were evaluated. The development of enzymatic browning during refrigerated storage occurred because of damage during HPP that triggered loss of cell integrity, allowing substrates to interact with enzymes. Increasing pressure levels resulted in greater damage, as determined by shifts in transverse relaxation time (T2) and by light micrographs. Discoloration was triggered by membrane decompartmentalization but limited by PPO activity, which was found to correlate to cultivar harvest time (early, mid, and late season). Outcomes from the microstructure, 1H NMR ,and PPO activity evaluation were an effective means of determining membrane decompartmentalization and allowed for prediction of browning scenarios.
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Affiliation(s)
- Chukwan Techakanon
- Faculty of Science and Industrial Technology, Prince of Songkla University , Surat Thani Campus, 31 Makham Tia, Muang Surat Thani, Suratthani 84000, Thailand
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Techakanon C, Gradziel TM, Zhang L, Barrett DM. The Impact of Maturity Stage on Cell Membrane Integrity and Enzymatic Browning Reactions in High Pressure Processed Peaches (Prunus persica). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:7216-7224. [PMID: 27556337 DOI: 10.1021/acs.jafc.6b02252] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Fruit maturity is an important factor associated with final product quality, and it may have an effect on the level of browning in peaches that are high pressure processed (HPP). Peaches from three different maturities, as determined by firmness (M1 = 50-55 N, M2 = 35-40 N, and M3 = 15-20 N), were subjected to pressure levels at 0.1, 200, and 400 MPa for 10 min. The damage from HPP treatment results in loss of fruit integrity and the development of browning during storage. Increasing pressure levels of HPP treatment resulted in greater damage, particularly in the more mature peaches, as determined by shifts in transverse relaxation time (T2) of the vacuolar component and by light microscopy. The discoloration of peach slices of different maturities processed at the same pressure was comparable, indicating that the effect of pressure level is greater than that of maturity in the development of browning.
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Affiliation(s)
- Chukwan Techakanon
- Department of Food Science and Technology, University of California-Davis , One Shields Avenue, Davis, California 95616, United States
- Faculty of Science and Industrial Technology, Prince of Songkla University , Surat Thani Campus, 31 Makham Tia, Muang Surat Thani, Suratthani 84000, Thailand
| | - Thomas M Gradziel
- Department of Pomology, University of California-Davis , One Shields Avenue, Davis, California 95616, United States
| | - Lu Zhang
- Department of Food Science and Technology, University of California-Davis , One Shields Avenue, Davis, California 95616, United States
- Department of Applied Biology & Chemical Technology, The Hong Kong Polytechnic University , Kowloon, Hong Kong SAR, China
| | - Diane M Barrett
- Department of Food Science and Technology, University of California-Davis , One Shields Avenue, Davis, California 95616, United States
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Malpiedi LP, Nerli BB, Abdalla DSP, Pessoa A. Assessment of the effect of triton X-114 on the physicochemical properties of an antibody fragment. Biotechnol Prog 2014; 30:554-61. [DOI: 10.1002/btpr.1882] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Revised: 01/29/2014] [Indexed: 01/05/2023]
Affiliation(s)
- Luciana P. Malpiedi
- Biochemical and Pharmaceutical Technology Dept./FCF; University of São Paulo. Av. Prof. Lineu Prestes; 580-Bloco 16 CEP 05508-000 São Paulo Brazil
- Physical Chemistry Dept., Faculty of Biochemistry and Pharmaceutical Sciences; National University of Rosario; Suipacha 570 S2002LRK Rosario Argentina
| | - Bibiana B. Nerli
- Physical Chemistry Dept., Faculty of Biochemistry and Pharmaceutical Sciences; National University of Rosario; Suipacha 570 S2002LRK Rosario Argentina
| | | | - Adalberto Pessoa
- Biochemical and Pharmaceutical Technology Dept./FCF; University of São Paulo. Av. Prof. Lineu Prestes; 580-Bloco 16 CEP 05508-000 São Paulo Brazil
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Wang S, Xiong N, Dong XY, Sun Y. A novel nickel-chelated surfactant for affinity-based aqueous two-phase micellar extraction of histidine-rich protein. J Chromatogr A 2013; 1320:118-24. [DOI: 10.1016/j.chroma.2013.10.074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 09/18/2013] [Accepted: 10/23/2013] [Indexed: 11/15/2022]
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8
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Asencio AD, Morte A, García-Carmona F, Pérez-Gilabert M. PARTIAL PURIFICATION AND CHARACTERIZATION OF A CALCIUM-DEPENDENT ALKALINE PHOSPHATASE FROM THE CYANOBACTERIUM ARTHROSPIRA PLATENSIS (1). JOURNAL OF PHYCOLOGY 2012; 48:347-354. [PMID: 27009724 DOI: 10.1111/j.1529-8817.2012.01119.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In the present study, Triton X-114 (TX-114) is used to extract and partially purify alkaline phosphatase (ALP) from a membranous fraction of Arthrospira platensis Gomont containing cell wall, plasma membrane, thylakoids, and sheath. TX-114 has a double effect: solubilizing cell components to liberate the enzyme and, after phase partitioning, removing chl and other pigments present in the crude extract. The recovery of the enzyme in the aqueous phase suggests the overall hydrophilic character of this enzyme. ALP was kinetically characterized at pH 11.0 using p-nitrophenyl phosphate as substrate, giving a Km value of 1.7 mM. Orthovanadate was seen to be a competitive inhibitor of ALP, with a Ki of 0.8 mM. The enzyme was almost completely inactivated in the presence of 70 μM EDTA, although the addition of Ca(2+) reverted this inactivation; these results indicate that ALP from A. platensis is a calcium-dependent metalloenzyme. When the effect of Ca(2+) was investigated in detail, a value of 0.067 μM(-1) for the affinity constant was obtained. The enzyme was histochemically localized in the cytoplasm, cell wall, and sheath using the enzyme-labeled fluorescent substrate (ELF) method. It is assumed that the same enzyme is either soluble in the cytoplasm and in some way "trapped" in the cell wall or in the sheath. ALP localization within the sheath and the subsequent release of phosphorus (P) may benefit the neighboring cells surrounding this layer.
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Affiliation(s)
- Antonia D Asencio
- División Botánica, Departamento de Biología Aplicada, Facultad de Ciencias Experimentales, Universidad Miguel Hernández, Campus de Elche, Avenida de la Universidad s/n, 03202 Elche, SpainDepartamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, SpainDepartamento de Bioquímica y Biología Molecular-A, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
| | - Asuncióín Morte
- División Botánica, Departamento de Biología Aplicada, Facultad de Ciencias Experimentales, Universidad Miguel Hernández, Campus de Elche, Avenida de la Universidad s/n, 03202 Elche, SpainDepartamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, SpainDepartamento de Bioquímica y Biología Molecular-A, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
| | - Francisco García-Carmona
- División Botánica, Departamento de Biología Aplicada, Facultad de Ciencias Experimentales, Universidad Miguel Hernández, Campus de Elche, Avenida de la Universidad s/n, 03202 Elche, SpainDepartamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, SpainDepartamento de Bioquímica y Biología Molecular-A, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
| | - Manuela Pérez-Gilabert
- División Botánica, Departamento de Biología Aplicada, Facultad de Ciencias Experimentales, Universidad Miguel Hernández, Campus de Elche, Avenida de la Universidad s/n, 03202 Elche, SpainDepartamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, SpainDepartamento de Bioquímica y Biología Molecular-A, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
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Lago-Vanzela ES, Pavezzi FC, Martin N, Gomes E, Da Silva R. Isolation and characterization of latent and active polyphenoloxidase in BRS Clara (CNPUV 154-147 × Centennial seedless) and BRS Morena (Marroo seedless × Centennial seedless) seedless table grapes. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2011; 49:1251-1258. [PMID: 22000047 DOI: 10.1016/j.plaphy.2011.09.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 09/09/2011] [Indexed: 05/31/2023]
Abstract
The seedless grapes BRS Clara and BRS Morena, developed in Brazil, are currently growing in popularity due to their premium texture and taste. However, there are no reports on the polyphenoloxidase (PPO) from these cultivars. In this paper, active and latent PPO from BRS Clara and BRS Morena seedless grapes were extracted using the non-ionic detergents Triton-X-100 (active) and Triton-X-114 (latent), and their catecholase activities were characterized. The PPO extracted using Triton-X-110 exhibited maximum activities at pH 6.0 and at 25 °C. Above 30 °C, a gradual decline in activities was noted, with complete inactivation at 60 °C. The PPO from grapes extracted with Triton-X-114 was activated with 0.2% of the ionic detergent sodium dodecyl sulfate (SDS), and exhibited maximum activities at pH 5.5 and at 30 °C. It was stable until the temperature reached 60 °C.
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Affiliation(s)
- Ellen Silva Lago-Vanzela
- Laboratory of Biochemistry and Applied Microbiology, São Paulo State University, UNESP, Rua Cristovão Colombo 2265, Jardim Nazareth, 15054-000 São José do Rio Preto, São Paulo, Brazil.
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Jiang L, Zhou G, Li Y. MICELLE-MEDIATED EXTRACTION FOR THE ANALYSIS OF CHLOROGENIC ACID, RUTIN, AND QUERCETIN IN HONEYSUCKLE BY HPLC–UV. J LIQ CHROMATOGR R T 2011. [DOI: 10.1080/10826076.2011.560699] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Lanfang Jiang
- a Key Laboratory on Luminescence and Real-Time Analysis (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing, P. R. China
| | - Guangming Zhou
- a Key Laboratory on Luminescence and Real-Time Analysis (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing, P. R. China
| | - Yanyan Li
- a Key Laboratory on Luminescence and Real-Time Analysis (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing, P. R. China
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11
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Chen CJ, Tseng MC, Lin HJ, Lin TW, Chen YR. Visual indicator for surfactant abundance in MS-based membrane and general proteomics applications. Anal Chem 2011; 82:8283-90. [PMID: 20828166 DOI: 10.1021/ac1017937] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The existence of surfactants in proteomics samples can severely reduce enzymatic digestion efficiency, liquid chromatography (LC) separation efficiency, column lifetime, and mass spectrometry (MS) sensitivity. Although various techniques are able to remove surfactants, surfactants may occasionally be retained in samples due to variations in sample preparation method or personal skill. Evaluation of surfactant residue in a sample, however, usually requires an additional instrument and is time-consuming. In this study, a simple and rapid visual indicator for surfactant abundance (VISA) was developed. With the detection of a visible surfactant pellet in the solution, this assay was able to detect surfactant residue in aqueous solutions within 5 min. Without the need of additional equipment such as a mass spectrometer, every user can perform a quick test on their bench before sending the sample to the MS facility. The detection limit for the commonly used surfactants, Triton X-114 and SDS, was about 0.0005% and 0.0002%, respectively. The VISA was successfully applied to evaluate the efficiency of removal of surfactants in Triton X-114 extracted membrane proteins using tube-gel. With the combination of Triton X-114 extraction and tube-gel protocol, a study of spermatozoa membrane proteome identified about 252 proteins of which about 67.5% were classified as membrane proteins. The coexistence of protein and surfactant did not affect the VISA sensitivity, suggesting that this indicator is suitable for proteomics applications. The VISA also has potential for the detection of other surfactants and can be applied to other surfactant removing protocols.
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Affiliation(s)
- Chao-Jung Chen
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan 11529
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12
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Dimitrova P, Bart HJ. Trennung von Enantiomeren mittels Mikroemulsionen. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.200900161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Casado-Vela J, Sellés S, Martínez RB. Proteomic analysis of tobacco mosaic virus-infected tomato (Lycopersicon esculentum M.) fruits and detection of viral coat protein. Proteomics 2008; 6 Suppl 1:S196-206. [PMID: 16534742 DOI: 10.1002/pmic.200500317] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Tobacco mosaic virus (TMV) is a widespread plant virus from the genus Tobamovirus that affects tobacco and tomato plants causing a pathology characterised by cell breakage and disorganisation in plant leaves and fruits. In this study we undertook a proteomic approach to investigate the molecular and biochemical mechanisms potentially involved in tomato fruit defence against the viral infection. The comparison of 2-D gels from control and TMV-infected but asymptomatic tomato fruits revealed changes in several proteins. The differential expression of peptidases, endoglucanase, chitinase and proteins participating in the ascorbate-glutathione cycle in infected fruits suggests that pathogenesis-related proteins and antioxidant enzymes may play a role in the protection against TMV infection. TMV coat protein appeared as a prominent spot in 2-D gels from TMV-infected asymptomatic fruits. A Triton X-114 phase-partitioning step of tomato protein extracts favoured the solubilisation of TMV coat protein and the enrichment of two aminopeptidases not present in control fruits. PMF and MS/MS data of the 2-D gel-isolated TMV coat protein is proposed as a powerful analysis method for the simultaneous tobamovirus detection, species determination and strain differentiation in virus-infected fruit commodities.
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Affiliation(s)
- Juan Casado-Vela
- Grupo de Proteómica y Genómica Funcional de Plantas, Departamento de Agroquímica y Bioquímica, Facultad de Ciencias, Universidad de Alicante, Alicante, Spain
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Sellés-Marchart S, Casado-Vela J, Bru-Martínez R. Isolation of a latent polyphenol oxidase from loquat fruit (Eriobotrya japonica Lindl.): kinetic characterization and comparison with the active form. Arch Biochem Biophys 2005; 446:175-85. [PMID: 16406214 DOI: 10.1016/j.abb.2005.12.004] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2005] [Revised: 12/07/2005] [Accepted: 12/07/2005] [Indexed: 11/29/2022]
Abstract
Polyphenol oxidase (PPO) has been extracted from both soluble and particulate fractions of loquat fruit (Eriobotrya japonica Lindl. cv. Algerie). The soluble PPO (20% of total activity) was partially purified 3.3-fold after ammonium sulfate fractionation being in its active state. The particulate PPO fraction (80% of total activity) was purified to homogeneity in a latent form being activable by sodium dodecyl sulfate (SDS). The enzyme was purified 40.0-fold with a total yield of 15.3% after extraction by phase partitioning in Triton X-114 followed by three chromatographic steps. The molecular weight was estimated to be about 59.2 and 61.2 kDa by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and gel filtration chromatography, respectively, indicating that latent PPO is a monomer. Latent PPO catalyzed the oxidation of chlorogenic acid (CA) at a rate 50-fold faster than that of 4-tert-butylcatechol (TBC) but the soluble active counterpart only twice. Both PPOs exhibited similar Km values for TBC but Km for CA was 5-fold higher for the latent than for the active soluble PPO. Other kinetic characteristics, including sensitivity to inhibitors, substrate specificity, thermal stability, temperature, and pH profiles, were quite different between both PPOs. These results provide strong evidences that the soluble active and the particulate latent are different forms of PPO in loquat fruit flesh. The results suggest that the major PPO form for the oxidation of CA, leading to enzymatic browning under physiological conditions, is the latent one.
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Affiliation(s)
- Susana Sellés-Marchart
- Grupo de Proteómica y Genómica Funcional de Plantas, Departamento de Agroquímica y Bioquímica, Facultad de Ciencias, Universidad de Alicante, Campus de San Vicente del Raspeig, Apdo. 99, E-03080 Alicante, Spain
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CASADO-VELA J, SELLES S, BRU R. PURIFICATION AND KINETIC CHARACTERIZATION OF POLYPHENOL OXIDASE FROM TOMATO FRUITS (LYCOPERSICON ESCULENTUM CV. MUCHAMIEL). J Food Biochem 2005. [DOI: 10.1111/j.1745-4514.2005.00037.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Pérez-Gilabert M, Morte A, Avila-González R, García-Carmona F. Characterization and histochemical localization of nonspecific esterase from ascocarps of desert truffle (Terfezia claveryi Chatin). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2005; 53:5754-9. [PMID: 15998144 DOI: 10.1021/jf050334d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
An esterase activity from Terfezia claveryi Chatin ascocarps, a mycorrhizal hypogeous fungus, is described for the first time. The enzyme was partially purified using phase partitioning in Triton X-114 (TX-114), achieving a reduction of 87% in the triglyceride content and the removal of 63% of phenols. The enzyme showed maximum activity toward short-chain p-nitrophenyl esters, and no interfacial activation was observed, indicating that the enzyme responsible for this activity is an esterase and not a lipase. This esterase presented its maximum activity at pH 7.4 and 60 degrees C. The values obtained for Km at pH 7.4 were 0.3 mM for p-nitrophenyl butyrate and 0.6 mM for p-nitrophenyl acetate with catalytic efficiencies (Vmax/Km) of 0.23 and 0.32, respectively. T. claveryi esterase was inhibited by phenylboric acid, indicating that serine residues were involved in the enzyme activity. This activity was localized only in the hypothecium and was absent from the peridium and gleba.
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Affiliation(s)
- Manuela Pérez-Gilabert
- Departamento de Bioquímica y Biología Molecular-A and Departamento de Biología Vegetal, Facultad de Biología Universidad de Murcia, Campus de Espinardo, E-30071 Murcia, Spain.
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Pérez-Gilabert M, Sánchez-Felipe I, García-Carmona F. Purification and partial characterization of lipoxygenase from desert truffle (Terfezia claveryi Chatin) ascocarps. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2005; 53:3666-3671. [PMID: 15853417 DOI: 10.1021/jf048087l] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A lipoxygenase from Terfezia claveryi Chatin ascocarp, a mycorrhizal hypogeous fungus, is described for the first time. The higher proportion of PUFA in T. claveryi ascocarps makes lipid rancidity the main factor limiting its storage life. Thus, the studies on LOX from T. claveryi are important because this enzyme, among other roles, may be involved in an alteration of lipids leading to consumer rejection. The enzyme has been purified to apparent homogeneity by phase partitioning in the presence of Triton X-114, followed by two steps of cation-exchange chromatography. The purified T. claveryi LOX preparation consisted of a single major band with an apparent molecular mass of 66 kDa after sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The enzymic activity exhibited a strong specificity toward linoleic and linolenic acids as substrates, while only 32% activity was observed using gamma-linolenic acid. The pH optimum of this enzyme was pH 7.0. When the enzyme reacted with linoleic acid, it produced a single peak, which comigrated with standard 13-hydroperoxy-octadecadienoic acid; 13-hydroperoxy-octadecatrienoic acid was produced during the reaction with linolenic acid.
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Affiliation(s)
- Manuela Pérez-Gilabert
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, E-30071 Murcia, Spain
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Orenes-Piñero E, García-Carmona F, Sánchez-Ferrer A. A kinetic study of p-cresol oxidation by quince fruit polyphenol oxidase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2005; 53:1196-1200. [PMID: 15713040 DOI: 10.1021/jf040080g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The monophenolase activity of quince pulp polyphenol oxidase was characterized by extracting samples using a combination of a two-phase partition step in Triton X-114, followed by a PEG 8000/phosphate partition step, and a final ammonium sulfate fractionation between 30 and 75%. The purification method avoids the loss of cresolase activity described in another quince pulp polyphenol oxidase. The activity was characterized by a lag period, whose duration depended on the substrate concentration, the pH, and the presence of catalytic amounts of o-diphenol. By increasing the concentration of o-diphenols, it was possible to evaluate the enzyme activation constant, K(act), which showed a value of 4.5 microM for 4-methylcatechol. A general kinetic mechanism for this enzyme is used to explain the loss of activity that normally occurs during quince pulp polyphenol oxidase purification.
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Affiliation(s)
- Esteban Orenes-Piñero
- Department of Biochemistry and Molecular Biology-A, Faculty of Biology, University of Murcia, Campus Espinardo, E-30071 MURCIA, Spain
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YORUK RUHIYE, MARSHALL MAURICER. PHYSICOCHEMICAL PROPERTIES AND FUNCTION OF PLANT POLYPHENOL OXIDASE: A REVIEW. J Food Biochem 2003. [DOI: 10.1111/j.1745-4514.2003.tb00289.x] [Citation(s) in RCA: 365] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Chapter 15 Liquid membrane techniques. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0166-526x(02)80052-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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21
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Pérez-Gilabert M, Morte A, Honrubia M, García-Carmona F. Partial purification, characterization, and histochemical localization of fully latent desert truffle (Terfezia claveryi Chatin) polyphenol oxidase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2001; 49:1922-1927. [PMID: 11308347 DOI: 10.1021/jf001009n] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In the present paper, a fully latent polyphenol oxidase (PPO) from desert truffle (Terfezia claveryi Chatin) ascocarps is described for the first time. The enzyme was partially purified by using phase partitioning in Triton X-114 (TX-114). The achieved purification was 2-fold from a crude extract, with a 66% recovery of activity. The interfering lipids were reduced to 13% of the original content. In addition, the purification gave rise to a reduction of phenolic compounds to only 37.5%, thus avoiding the postpurification tanning of the enzyme. Latent PPO was activated by the anionic surfactant sodium dodecyl sulfate (SDS) or by incubation with trypsin. The amount of SDS necessary to obtain a maximum activation was dependent on the nature of the substrate. The use of SDS also permitted the histochemical localization of the latent enzyme within the ascocarp. Terfezia polyphenol oxidase was kinetically characterized using two phenolic substrates (L-DOPA and tert-butylcatechol). The latter substrate presented inhibition at high substrate concentration with a K(si) of 6.3 mM. Different inhibiting agents (kojic and cinnamic acid, mimosine and tropolone) were also studied, tropolone being the most effective.
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Affiliation(s)
- M Pérez-Gilabert
- Departamento de Bioquímica y Biología Molecular-A, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, E-30071 Murcia, Spain
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Fang Q, Yeung HW, Leung HW, Huie CW. Micelle-mediated extraction and preconcentration of ginsenosides from Chinese herbal medicine. J Chromatogr A 2000; 904:47-55. [PMID: 11209900 DOI: 10.1016/s0021-9673(00)00911-0] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The feasibility of employing micelle-mediated extraction as an alternative and effective method for the solubilization, purification and/or preconcentration of active ingredients from herbal products is demonstrated for the first time using the root of American ginseng as a model. When compared to methanol and water, an aqueous surfactant solution containing 10% Triton X-100 yielded faster kinetics and higher recovery for the extraction of various ginsenosides. An experimental design approach (uniform design) was demonstrated as a novel and useful method for the optimization of experimental factors involved in the micelle-mediated extraction process. For the preconcentration of ginsenosides prior to chromatographic determination, a salting-out agent (sodium sulfate) was employed to make the efficient cloud point extraction of both hydrophobic and hydrophilic ginsenosides into the surfactant-rich phase possible, as well as to increase the preconcentration factor by reducing the volume of the surfactant-rich phase.
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Affiliation(s)
- Q Fang
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong
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23
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Fricke B. Quantitative determination of zwitterionic detergents using salt-induced phase separation of Triton X-100. Anal Biochem 2000; 281:144-50. [PMID: 10870829 DOI: 10.1006/abio.2000.4552] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Zwitterionic detergents interfere with the salt-induced phase separation for nonionic detergents in a concentration-dependent manner by shifting the normal cloud point of nonionic detergents to a higher ionic strength at room temperature. This phenomenon was used to determine the concentration of the zwitterionic detergents CHAPS, CHAPSO, and sulfobetaine SB-12 in solution by titration with ammonium sulfate in the presence of Triton X-100. Among the ionic detergents tested, the method was only applicable to sodium cholate. The assay can be used to control the removal of zwitterionic detergents during the reconstitution of membrane proteins in liposomes. However, it cannot be used to determine the specific binding of zwitterionic detergents to highly diluted, pure membrane proteins because of the limited sensitivity. Neither proteins nor phospholipids interfered with this method at concentrations up to 20 mg/ml of test solution (human serum albumin) or 10 mg/ml (phospholipids), respectively. Since the assay is based on the competition between salts and nonionic detergents for water molecules, it is important to equalize the ionic strength of samples and calibration standards.
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Affiliation(s)
- B Fricke
- Institute for Physiological Chemistry, Medical Faculty, Martin Luther University, Halle, Germany.
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Métivier A, Boyaval P, Duffes F, Dousset X, Compoint JP, Marion D. Triton X-114 phase partitioning for the isolation of a pediocin-like bacteriocin from Carnobacterium divergens. Lett Appl Microbiol 2000; 30:42-6. [PMID: 10728559 DOI: 10.1046/j.1472-765x.2000.00655.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A new procedure combining Triton X-114 phase partitioning and cation exchange chromatography was developed to purify a bacteriocin from a complex culture medium. This pediocin-like bacteriocin, secreted by Carnobacterium divergens and named divercin V41, was entirely recovered in the lower detergent-rich phase whereas all other substances (compounds from culture medium, bacterial metabolites) remained in the upper detergent-poor phase. Subsequent cation-exchange chromatography of the TX-114-rich phase allowed recovery of the pure active bacteriocin and also detergent removing. This new purification method is versatile, fast (only two steps) and can be carried out on whole broth.
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Affiliation(s)
- A Métivier
- I. NRA, Laboratoire de Biochimie et Technologie des Protéines, Nantes, France
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Breithaupt H, Pohl M, Bönigk W, Heim P, Schimz KL, Kula MR. Cloning and expression of (R)-hydroxynitrile lyase from Linum usitatissimum (flax). ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s1381-1177(98)00109-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Affiliation(s)
- Hirofumi TANI
- Laboratory of Bioanalytical Chemistry, Graduate School of Engineering, Hokkaido University
| | - Tamio KAMIDATE
- Laboratory of Bioanalytical Chemistry, Graduate School of Engineering, Hokkaido University
| | - Hiroto WATANABE
- Laboratory of Bioanalytical Chemistry, Graduate School of Engineering, Hokkaido University
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Núñez-Delicado E, Bru R, Sánchez-Ferrer A, García-Carmona F. Triton X-114-aided purification of latent tyrosinase. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL APPLICATIONS 1996; 680:105-12. [PMID: 8798887 DOI: 10.1016/0378-4347(96)00012-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Mushroom tyrosinase was partially purified using an aqueous two-phase system with Triton X-114. The purification achieved was 5.5-fold from a crude extract of mushroom pileus, with a high recovery of 84%. The phenols were reduced to 8% of the original content, avoiding pre- and post-purification tanning of the enzyme. The enzyme obtained was latent and was activated 3-fold by trypsin, 2.7-fold by changes in the pH and to different extents by cationic and anionic detergents, the latter being the more effective. There was also a synergistic effect between trypsin and detergent, at low detergent concentrations. When kinetically characterized, latent enzyme showed both monophenolase and diphenolase activities, the latter activity displaying an unexpected lag period before reaching the steady-state rate. This behaviour is characteristic of a hysteretic enzyme, and has not been previously described for this enzyme. In addition, inhibition studies with substrate analogues were carried out, tropolone being found to be the most effective inhibitor.
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Affiliation(s)
- E Núñez-Delicado
- Departamento de Bioquímica y Biología Molecular (A), Facultad de Biología, Universidad de Murcia, Spain
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Sivars U, Bergfeldt K, Piculell L, Tjerneld F. Protein partitioning in weakly charged polymer-surfactant aqueous two-phase systems. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL APPLICATIONS 1996; 680:43-53. [PMID: 8798880 DOI: 10.1016/0378-4347(95)00564-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The study includes partitioning of proteins in aqueous two-phase systems consisting of the polymer dextran and the non-ionic surfactant C12E5 (pentaethylene glycol mono-n-dodecyl ether). In this system a micelle-enriched phase is in equilibrium with a polymer-enriched phase. Charges can be introduced into the micelles by the addition of charged surfactants. The charge of the mixed micelles is easily varied in sign and magnitude independently of pH, by the addition of different amounts of negatively charged surfactant, sodium dodecyl sulphate (SDS), or positively charged surfactant dodecyl trimethyl ammonium chloride (DoTAC). A series of water-soluble model proteins (BSA, beta-lactoglobulin, myoglobin, cytochrome c and lysozyme), with different net charges at pH 7.1, have been partitioned in non-charged systems and in systems with charged mixed micelles or charged polymer (dextran sulphate). It is shown that partition coefficients for charged proteins in dextran-C12E5 systems can be strongly affected by addition of charged surfactants (SDS, DoTAC) or polymer (dextran sulphate) and that the effects are directly correlated to protein net charge.
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Affiliation(s)
- U Sivars
- Department of Biochemistry, Lund University, Sweden
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