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Journal articles on the topic 'Extracellular hydrolytic enzymes'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Matsushita, Osamu, and Akinobu Okabe. "Clostridial hydrolytic enzymes degrading extracellular components." Toxicon 39, no. 11 (2001): 1769–80. http://dx.doi.org/10.1016/s0041-0101(01)00163-5.

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2

Kuz'min, P. N. "XYLOTROPHIC FUNGUS Trichoderma atroviride: CULTIVATION, EXTRACELLULAR HYDROLYTIC AND ANTIMICROBIAL ACTIVITY." Biotechnologia Acta 14, no. 3 (2021): 46–53. http://dx.doi.org/10.15407/biotech14.03.046.

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Xylotrophic fungi are well known by their ability to excrete enzymes into environment. These fungi have important biotechnological potential and some of them produce industrial enzymes. Besides, xylotrophic fungal species have recently attracted a lot of attention among researchers as a source of antibacterial drugs. Aim. To analyze the effect of the carbon source in the culture medium, as well as the conditions of deep cultivation on the mycelium yield, proteolytic, cellulolytic and antimicrobial activity of the culture liquid of Trichoderma atroviride. Methods. Deep culture methods were used

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3

Ziervogel, K., A. D. Steen, and C. Arnosti. "Changes in the spectrum and rates of extracellular enzyme activities in seawater following aggregate formation." Biogeosciences Discussions 6, no. 6 (2009): 11293–316. http://dx.doi.org/10.5194/bgd-6-11293-2009.

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Abstract. Marine snow aggregates are heavily colonized by heterotrophic microorganisms that express high levels of hydrolytic activities, making aggregates hotspots for carbon remineralization in the ocean. To assess how aggregate formation influences the ability of seawater microbial communities to access organic carbon, we compared hydrolysis rates of six polysaccharides in coastal seawater after aggregates had been formed (via incubation on a roller table) with hydrolysis rates in seawater from the same site that had not incubated on a roller table (referred to as whole seawater). Hydrolysi

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Ziervogel, K., A. D. Steen, and C. Arnosti. "Changes in the spectrum and rates of extracellular enzyme activities in seawater following aggregate formation." Biogeosciences 7, no. 3 (2010): 1007–15. http://dx.doi.org/10.5194/bg-7-1007-2010.

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Abstract. Marine snow aggregates are heavily colonized by heterotrophic microorganisms that express high levels of hydrolytic activities, making aggregates hotspots for carbon remineralization in the ocean. To assess how aggregate formation influences the ability of seawater microbial communities to access organic carbon, we compared hydrolysis rates of six polysaccharides in coastal seawater after aggregates had been formed (via incubation on a roller table) with hydrolysis rates in seawater from the same site that had not incubated on a roller table (referred to as whole seawater). Hydrolysi

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5

Tropeano, Mauro, Susana Vázquez, Silvia Coria, et al. "Extracellular hydrolytic enzyme production by proteolytic bacteria from the Antarctic." Polish Polar Research 34, no. 3 (2013): 253–67. http://dx.doi.org/10.2478/popore-2013-0014.

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AbstractCold−adapted marine bacteria producing extracellular hydrolytic enzymes are important for their industrial application and play a key role in degradation of particulate organic matter in their natural environment. In this work, members of a previously−obtained protease−producing bacterial collection isolated from different marine sources from Potter Cove (King George Island, South Shetlands) were taxonomically identified and screened for their ability to produce other economically relevant enzymes. Eighty−eight proteolytic bacterial isolates were grouped into 25 phylotypes based on the

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6

Egli, Christine M., Regiane S. Natumi, Martin R. Jones, and Elisabeth M. L. Janssen. "Inhibition of Extracellular Enzymes Exposed to Cyanopeptides." CHIMIA International Journal for Chemistry 74, no. 3 (2020): 122–28. http://dx.doi.org/10.2533/chimia.2020.122.

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Harmful cyanobacterial blooms in freshwater ecosystems produce bioactive secondary metabolites including cyanopeptides that pose ecological and human health risks. Only adverse effects of one class of cyanopeptides, microcystins, have been studied extensively and have consequently been included in water quality assessments. Inhibition is a commonly observed effect for enzymes exposed to cyanopeptides and has mostly been investigated for human biologically relevant model enzymes. Here, we investigated the inhibition of ubiquitous aquatic enzymes by cyanobacterial metabolites. Hydrolytic enzymes

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7

Sanchez-Porro, C., S. Martin, E. Mellado, and A. Ventosa. "Diversity of moderately halophilic bacteria producing extracellular hydrolytic enzymes." Journal of Applied Microbiology 94, no. 2 (2003): 295–300. http://dx.doi.org/10.1046/j.1365-2672.2003.01834.x.

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8

Bidochka, Michael J., Susan Burke, and Luna Ng. "Extracellular hydrolytic enzymes in the fungal genus Verticillium: adaptations for pathogenesis." Canadian Journal of Microbiology 45, no. 10 (1999): 856–64. http://dx.doi.org/10.1139/w99-085.

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The insect and plant pathogens within the fungal genus Verticillium showed enzymatic adaptation (production and regulation) directed to the degradation of some of the polymers found in the integument of their respective hosts. For example, the facultative plant pathogens (V. albo-atrum and V. dahliae) produced greater levels of cellulase and xylanase than the facultative insect pathogen (V. lecanii). Verticillium lecanii produced extracellular subtilisin-like protease when grown in insect cuticle medium but not in plant cell wall medium, while the plant pathogen V. albo-atrum showed a diminish

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9

Alam, S., H. Shah, and N. Magan. "Water availability affects extracellular hydrolytic enzyme production by Aspergillus flavus and Aspergillus parasiticus." World Mycotoxin Journal 2, no. 3 (2009): 313–22. http://dx.doi.org/10.3920/wmj2008.1108.

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The objectives of this study were to examine the effect of different water activities (aw; 0.99, 0.96 and 0.94) and time (up to 120 h) on quantitative and specific enzyme production during germination and initial growth of Aspergillus flavus and A. parasiticus strains at 25 °C. This is an important early indicator of potential for aflatoxin production under conducive conditions. Qualitative API ZYM generic enzyme strips were used to identify key hydrolytic enzymes produced. Subsequently, the temporal effects of aw on the total/specific activity of the key 4-5 hydrolytic enzymes were determined

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10

Zhao, Zihao, Federico Baltar, and Gerhard J. Herndl. "Linking extracellular enzymes to phylogeny indicates a predominantly particle-associated lifestyle of deep-sea prokaryotes." Science Advances 6, no. 16 (2020): eaaz4354. http://dx.doi.org/10.1126/sciadv.aaz4354.

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Heterotrophic prokaryotes express extracellular hydrolytic enzymes to cleave large organic molecules before taking up the hydrolyzed products. According to foraging theory, extracellular enzymes should be cell associated in dilute systems such as deep sea habitats, but secreted into the surrounding medium in diffusion-limited systems. However, extracellular enzymes in the deep sea are found mainly dissolved in ambient water rather than cell associated. In order to resolve this paradox, we conducted a global survey of peptidases and carbohydrate-active enzymes (CAZymes), two key enzyme groups i

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11

Kuhad, R. C., M. Manchanda, and A. Singh. "Hydrolytic potential of extracellular enzymes from a mutant strain of." Bioprocess Engineering 20, no. 2 (1999): 133. http://dx.doi.org/10.1007/s004490050571.

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12

Ghosh, A. K., and S. Sengupta. "Production of extracellular carbohydrases by mushrooms." Acta Mycologica 18, no. 1 (2014): 113–18. http://dx.doi.org/10.5586/am.1982.006.

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Seven different mushrooms, in submerged culture, are capable of utilizing various polysaccharides, i.e., xylan, mannan, cellulose, dextran, inulin, added in the medium as sole source of carbon. But chitin was found to be not utilized by any of them. Xylan is commonly utilized by all the mushrooms tested. Inducible and constitutive types of hydrolytic enzymes for those polysaccharides have been identified in the fermented broth of the mushrooms. Xylanase was found to be a constitutive enzyme for most of the strains exceipt for <i>Panaeolus papilionaceus</i> (Bull. ex Fr.) Fr. for wh

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13

Chrzanowska, Józefa, and Maria Kołaczkowska. "Production of extracellular proteolytic enzymes by Beauveria bassiana." Acta Mycologica 33, no. 2 (2014): 277–85. http://dx.doi.org/10.5586/am.1998.024.

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The production of proteolytic enzymes by two strains of <i>Beauveria bassiana</i> 278, <i>B. bassiana</i> 446 and one strain of <i>Ascosphera apis</i> 496 was analysed. It was demonstrated that the strain of <i>B. bassiana</i> 278 proved to be the best producer of basic and acid proteases. The influence of different environmental factors such as nitrogen and carbon sources on the production of extracellular hydrolytic enzymes was assessed. In addition the acid protease from <i>B. bassiana</i> was partially characterized.

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14

Lee, Fu Haw, Suet Ying Wan, Hooi Ling Foo, et al. "Comparative Study of Extracellular Proteolytic, Cellulolytic, and Hemicellulolytic Enzyme Activities and Biotransformation of Palm Kernel Cake Biomass by Lactic Acid Bacteria Isolated from Malaysian Foods." International Journal of Molecular Sciences 20, no. 20 (2019): 4979. http://dx.doi.org/10.3390/ijms20204979.

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Biotransformation via solid state fermentation (SSF) mediated by microorganisms is a promising approach to produce useful products from agricultural biomass. Lactic acid bacteria (LAB) that are commonly found in fermented foods have been shown to exhibit extracellular proteolytic, β-glucosidase, β-mannosidase, and β-mannanase activities. Therefore, extracellular proteolytic, cellulolytic, and hemicellulolytic enzyme activities of seven Lactobacillus plantarum strains (a prominent species of LAB) isolated from Malaysian foods were compared in this study. The biotransformation of palm kernel cak

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15

Roycik, M., X. Fang, and Q. X. Sang. "A Fresh Prospect of Extracellular Matrix Hydrolytic Enzymes and Their Substrates." Current Pharmaceutical Design 15, no. 12 (2009): 1295–308. http://dx.doi.org/10.2174/138161209787846676.

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16

Octarya, Zona, Sumaryati Syukur, and Endang Purwati. "Purifikasi Parsial Enzim Ekstraseluler (Anoxybacillus sp.) yang Diisolasi dari Sumber Air Panas Bukit Kili Solok serta Aplikasinya untuk Menghidrolisis Limbah Berserat." Jurnal Natur Indonesia 15, no. 2 (2015): 106. http://dx.doi.org/10.31258/jnat.15.2.106-114.

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Termostable enzyme from thermophilic bacteria is very potential to improve technical enzyme in industry which used hightemperature. High water temperature exerts selection pressure on microbial species leading to specific flora that survivesand tolerates heat stress. The relative isolation and unique physical properties of Bukit Kili Ketek Hot Springs in Solok,West Sumatera may yield unique thermophiles. The generation of extracellular enzymatic bacterial is highly desirable forproduction of hydrolitic enzymes, which are useful in various industrial application and in animal feeds. This study,

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Do, Thi Tuyen, Van Thang Le, Cao Cuong Ngo, Thi Thu Hong Do, and Thi Hong Phuong Dang. "Biological characteristics and classification of thermophilic actinomycetes showed extracellular hydrolytic enzymes producing ability isolated from compost." E3S Web of Conferences 265 (2021): 04008. http://dx.doi.org/10.1051/e3sconf/202126504008.

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Compost is a highly humified organic fertilizer, rich in nutrients and a source of a variety of aerobic microorganisms, including actinomycetes, which develop in response to different levels of temperature, humidity, oxygen and pH. Microbes growing on the compost are believed to have the ability to produce extracellular hydrolytic enzymes. The purpose of this study was to determine the ability of thermophilic actinomycetes XM21 isolated from compost in producing hydrolytic enzymes, namely cellulase, amylase, protease, and lipase. The confirmation tests of hydrolytic enzymes-producing ability w

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18

SUNARDI, WIWIN TYAS ISTIKOWATI, FUTOSHI ISHIGURI, and SHINSO YOKOTA. "Fungal Glycoside Hydrolases of White-Rot Fungi for Cellulosic Biofuels Production: A Review." Asian Journal of Chemistry 32, no. 8 (2020): 1815–23. http://dx.doi.org/10.14233/10.14233/ajchem.2020.22620.

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The second generation bioethanol production from lignocellulose materials through environmental friendly methods is one of the biggest challenges on industrial application. Enzymatic hydrolysis of cellulose has more benefits compared with the acid hydrolysis This method has the good specificity, low consumption of energy and chemicals and is more environmental friendly. However, the utilization of lignocellulose for bioethanol production through enzymatic methods is still confronting several difficulties for commercialization. Cellulose hydrolysis step has been reported to be the bottleneck of

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19

Shruthi and N. B. Thippeswamy. "Isolation of Potential Extracellular Hydrolytic Enzymes producing Fungi from Western Ghats, Karnataka." Research Journal of Pharmacy and Technology 13, no. 5 (2020): 2081. http://dx.doi.org/10.5958/0974-360x.2020.00374.1.

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20

CHAROENCHAI, C., G. H. FLEET, P. A. HENSCHKE, and B. E. N. T. TODD. "Screening of non-Saccharomyceswine yeasts for the presence of extracellular hydrolytic enzymes." Australian Journal of Grape and Wine Research 3, no. 1 (1997): 2–8. http://dx.doi.org/10.1111/j.1755-0238.1997.tb00109.x.

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21

Ardakani, M. Roayaie, A. Poshtkouhian, M. A. Amoozegar, and H. Zolgharnein. "Isolation of Moderately Halophilic Pseudoalteromonas Producing Extracellular Hydrolytic Enzymes from Persian Gulf." Indian Journal of Microbiology 52, no. 1 (2011): 94–98. http://dx.doi.org/10.1007/s12088-011-0243-x.

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22

Kuhad, R. C., M. Manchanda, and A. Singh. "Hydrolytic potential of extracellular enzymes from a mutant strain of Fusarium oxysporum." Bioprocess Engineering 20, no. 2 (1999): 133–35. http://dx.doi.org/10.1007/pl00009040.

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23

Moreau, Robert A., and Thomas S. Seibles. "Production of extracellular enzymes by germinating cysts of Phytophthora infestans." Canadian Journal of Botany 63, no. 10 (1985): 1811–16. http://dx.doi.org/10.1139/b85-255.

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Cysts of Phytophthora infestans were prepared and allowed to germinate in water for 0 to 20 h. The activities of 11 different types of hydrolytic enzymes were detected in the extracellular germination medium. A time-course study revealed that most of the enzyme activities increased very little during germination. However, esterase activity increased 45-fold during germination. The rate of appearance of esterase activity closely paralleled the rate of germ tube growth. The intracellular levels of esterase activity were low throughout germination. These observations suggest that esterase is secr

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24

Chasanah, Ekowati, Mahrus Ali, and Miftahul Ilmi. "IDENTIFICATION AND PARTIAL CHARACTERIZATION OF CRUDE EXTRACELLULAR ENZYMES FROM BACTERIA ISOLATED FROM SHRIMP WASTE PROCESSING." Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology 7, no. 1 (2013): 11. http://dx.doi.org/10.15578/squalen.v7i1.11.

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Attention on chitin degrading enzymes has been growing since their ability to reduce the waste of shrimp/other crustaceans processing industries and converting them into value added products such as biologically active chitin and chitosan oligomer. Previous experiment found that KLU 11.16 isolate was one of the potential bacteria isolated from shrimp waste producing chitinolytic enzymes including chitosanases. A study on the identification of KLU 11.16 extracellularcrude enzyme was carried out by cultivating the bacteria on chitin medium. Due to the wide application of chitosanase, the charact

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25

Esteves, Ana Cristina, Márcia Saraiva, António Correia, and Artur Alves. "Botryosphaeriales fungi produce extracellular enzymes with biotechnological potential." Canadian Journal of Microbiology 60, no. 5 (2014): 332–42. http://dx.doi.org/10.1139/cjm-2014-0134.

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Phytopathogenic fungi are known for producing an arsenal of extracellular enzymes whose involvement in the infection mechanism has been suggested. However, these enzymes are largely unknown and their biotechnological potential also remains poorly understood. In this study, the production and thermostability of extracellular enzymes produced by phytopathogenic Botryosphaeriaceae was investigated. Hydrolytic and oxidative activities were detected and quantified at different temperatures. Most strains (70%; 37/53) were able to produce simultaneously cellulases, laccases, xylanases, pectinases, pe

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26

Baltar, Federico, Catherine Legrand, and Jarone Pinhassi. "Cell-free extracellular enzymatic activity is linked to seasonal temperature changes: a case study in the Baltic Sea." Biogeosciences 13, no. 9 (2016): 2815–21. http://dx.doi.org/10.5194/bg-13-2815-2016.

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Abstract. Extracellular enzymatic activities (EEAs) are a crucial step in the degradation of organic matter. Dissolved (cell-free) extracellular enzymes in seawater can make up a significant contribution of the bulk EEA. However, the factors controlling the proportion of dissolved EEA in the marine environment remain unknown. Here we studied the seasonal changes in the proportion of dissolved relative to total EEA (of alkaline phosphatase (APase), β-glucosidase (BGase), and leucine aminopeptidase (LAPase)), in the Baltic Sea for 18 months. The proportion of dissolved EEA ranged between 37 and

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27

Feby, Annie, and Shanta Nair. "Sponge-associated bacteria of Lakshadweep coral reefs, India: resource for extracellular hydrolytic enzymes." Advances in Bioscience and Biotechnology 01, no. 04 (2010): 330–37. http://dx.doi.org/10.4236/abb.2010.14043.

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28

Bidochka, Michael J., Susan Burke, and Luna Ng. "Extracellular hydrolytic enzymes in the fungal genus Verticillium: adaptations for pathogenesis." Canadian Journal of Microbiology 45, no. 10 (1999): 856–64. http://dx.doi.org/10.1139/cjm-45-10-856.

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29

Strauss, M. L. A., N. P. Jolly, M. G. Lambrechts, and P. van Rensburg. "Screening for the production of extracellular hydrolytic enzymes by non-Saccharomyces wine yeasts." Journal of Applied Microbiology 91, no. 1 (2001): 182–90. http://dx.doi.org/10.1046/j.1365-2672.2001.01379.x.

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30

Karray, Fatma, Manel Ben Abdallah, Najwa Kallel, Manel Hamza, Manel Fakhfakh, and Sami Sayadi. "Extracellular hydrolytic enzymes produced by halophilic bacteria and archaea isolated from hypersaline lake." Molecular Biology Reports 45, no. 5 (2018): 1297–309. http://dx.doi.org/10.1007/s11033-018-4286-5.

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31

Skočaj, Matej, Andrej Gregori, Maja Grundner, Kristina Sepčić, and Mija Sežun. "Hydrolytic and oxidative enzyme production through cultivation of Pleurotus ostreatus on pulp and paper industry wastes." Holzforschung 72, no. 9 (2018): 813–17. http://dx.doi.org/10.1515/hf-2017-0179.

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AbstractThe growth of oyster mushroom (Pleurotus ostreatus) on pulp and paper industry wastes was studied. Specifically, the question was investigated whether solid-state fermentation ofP. ostreatuson paper-mill deinking sludge and primary sludge substrates is appropriate for production of enzymes, relevant to the pulp and paper industry. Following fermentation, extracellular protein was extracted and the specific activities of four enzymes were determined, namely, the cellulase, xylanase, lipase and peroxidase. Furthermore, the effects of the pH of the extraction buffer on these enzyme activi

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32

Armesto, Cecilia, Fernanda Gonçalves Martins Maia, Fernando Pereira Monteiro, and Mário Sobral de Abreu. "exoenzymes as a pathogenicity factor for Colletotrichum gloeosporioides associated with coffee plants." Summa Phytopathologica 45, no. 4 (2019): 368–73. http://dx.doi.org/10.1590/0100-5405/191071.

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ABSTRACT Phytopathogenic fungi during the penetration and colonization process are capable of secreting several enzymes, which enable infection of the host live tissue, acting on the degradation of wax, cuticle and cell walls. The ability of a pathogenic agent to produce enzymes or not can determine the severity degree of a disease. In this study, 33 isolates of Colletotrichum gloeosporioides related to anthracnose and blister spot on coffee trees were evaluated for their ability to produce hydrolytic enzymes (amylase, lipase, protease, laccase, pectinase and cellulase) and specific cell wall

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33

Turner, Benjamin L. "Variation in pH Optima of Hydrolytic Enzyme Activities in Tropical Rain Forest Soils." Applied and Environmental Microbiology 76, no. 19 (2010): 6485–93. http://dx.doi.org/10.1128/aem.00560-10.

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ABSTRACT Extracellular enzymes synthesized by soil microbes play a central role in the biogeochemical cycling of nutrients in the environment. The pH optima of eight hydrolytic enzymes involved in the cycles of carbon, nitrogen, phosphorus, and sulfur, were assessed in a series of tropical forest soils of contrasting pH values from the Republic of Panama. Assays were conducted using 4-methylumbelliferone-linked fluorogenic substrates in modified universal buffer. Optimum pH values differed markedly among enzymes and soils. Enzymes were grouped into three classes based on their pH optima: (i) e

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Hiscox, Thomas J., Anjana Chakravorty, Jocelyn M. Choo, et al. "Regulation of Virulence by the RevR Response Regulator in Clostridium perfringens." Infection and Immunity 79, no. 6 (2011): 2145–53. http://dx.doi.org/10.1128/iai.00060-11.

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ABSTRACTClostridium perfringenscauses clostridial myonecrosis or gas gangrene and produces several extracellular hydrolytic enzymes and toxins, many of which are regulated by the VirSR signal transduction system. TherevRgene encodes a putative orphan response regulator that has similarity to the YycF (WalR), VicR, PhoB, and PhoP proteins from other Gram-positive bacteria. RevR appears to be a classical response regulator, with an N-terminal receiver domain and a C-terminal domain with a putative winged helix-turn-helix DNA binding region. To determine its functional role, arevRmutant was const

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Sheikhs, Nabiha Naeem, Qurat-ul-ain, and Saba Altaf. "Production of Extracellular Protease from Bacterial Co-cultures using Solid State Fermentation." BioScientific Review 2, no. 4 (2020): 13–23. http://dx.doi.org/10.32350/bsr/2020/24/726.

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Proteases (also known as peptidases or proteinases) are hydrolytic enzymes that cleave proteins into amino acids. They comprise 60% of the total industrial usage of enzymes worldwide and can be obtained from many sources. The current study aims to isolate and screen protease-producing bacterial strains from the soil and to produce protease from the bacterial co-cultures using solid-state fermentation (SSF). Primary screening of the protease-producing bacterial strains was carried out on skim milk agar and they were sub-cultured and preserved on the nutrient agar for further testing. Thirty-two

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Sheikhs, Nabiha Naeem, Qurat-ul-ain, and Saba Altaf. "Production of Extracellular Protease from Bacterial Co-cultures using Solid State Fermentation." BioScientific Review 2, no. 4 (2020): 13–23. http://dx.doi.org/10.32350/bsr.0204.02.

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Proteases (also known as peptidases or proteinases) are hydrolytic enzymes that cleave proteins into amino acids. They comprise 60% of the total industrial usage of enzymes worldwide and can be obtained from many sources. The current study aims to isolate and screen protease-producing bacterial strains from the soil and to produce protease from the bacterial co-cultures using solid-state fermentation (SSF). Primary screening of the protease-producing bacterial strains was carried out on skim milk agar and they were sub-cultured and preserved on the nutrient agar for further testing. Thirty-two

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Vasileva-Tonkova, Evgenia, and Danka Galabova. "Hydrolytic Enzymes and Surfactants of Bacterial Isolates from Lubricant- Contaminated Wastewater." Zeitschrift für Naturforschung C 58, no. 1-2 (2003): 87–92. http://dx.doi.org/10.1515/znc-2003-1-216.

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Fifteen bacterial monocultures were isolated from lubricant-contaminated wastewater of an electric power station in Sofia. Six isolates showed best growth in liquid media with 1.5% hexadecane, and on mineral salt agar plates supplemented with one of the following hydrocarbons: n-hexadecane, paraffin, kerosene and samples of wastewater. The ability of all isolates to produce extracellular hydrolytic enzymes and surface-active glycolipids was assessed on the basis of their growth on hydrocarbons. The study of this relatively closed micro-ecosystem revealed the existence of well-balanced microbia

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Alves, Fernanda, Juliana Cabrini Carmello, Ewerton Garcia de Oliveira Mima, Janaina Habib Jorge, Vanderlei Salvador Bagnato, and Ana Cláudia Pavarina. "Extracellular hydrolytic enzymes production of susceptible and fluconazole-resistant Candida albicans after photodynamic therapy." Photodiagnosis and Photodynamic Therapy 12, no. 3 (2015): 354. http://dx.doi.org/10.1016/j.pdpdt.2015.07.116.

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39

Prasanna, Radha, Lata Nain, Ravindramani Tripathi, et al. "Evaluation of fungicidal activity of extracellular filtrates of cyanobacteria – possible role of hydrolytic enzymes." Journal of Basic Microbiology 48, no. 3 (2008): 186–94. http://dx.doi.org/10.1002/jobm.200700199.

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40

YUAN, LEI, FAIZAN A. SADIQ, METTE BURMØLLE, TONGJIE LIU, and GUOQING HE. "Insights into Bacterial Milk Spoilage with Particular Emphasis on the Roles of Heat-Stable Enzymes, Biofilms, and Quorum Sensing." Journal of Food Protection 81, no. 10 (2018): 1651–60. http://dx.doi.org/10.4315/0362-028x.jfp-18-094.

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ABSTRACT Milk spoilage caused by psychrotrophic bacteria and their heat-stable enzymes is a serious challenge for the dairy industry. In many studies, spoilage has been explored based on the simplistic view of undesirable enzymes produced by planktonic cells. Recently, biofilms and quorum sensing (QS) have been suggested as important factors in the deterioration of milk, which opens new avenues for investigation of the processes and challenges. Production and heat stability of enzymes are enhanced in biofilms, mainly because of inherent differences in physiological states and protective shield

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Chen, Jiahao, Shihu Liu, Yingmu Wang, Wei Huang, and Jian Zhou. "Effect of different hydrolytic enzymes pretreatment for improving the hydrolysis and biodegradability of waste activated sludge." Water Science and Technology 2017, no. 2 (2018): 592–602. http://dx.doi.org/10.2166/wst.2018.185.

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Abstract In this study, the effects of lysozyme, protease and α-amylase pretreatments for improving the hydrolysis and biodegradability of waste activated sludge (WAS) were investigated. The results showed that lysozyme was more effective in increasing the soluble chemical oxygen demand (SCOD) concentration in the liquid phase of sludge and improving the release of protein and carbohydrate from sludge flocculation to enhance sludge hydrolysis. After 8 h hydrolysis, the net SCOD increase in a reactor with lysozyme was 2.23 times and 2.15 times that of the reactors with protease and α-amylase, r

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Martorell, M. M., L. A. M. Ruberto, P. M. Fernández, L. I. C. De Figueroa, and W. P. Mac Cormack. "Biodiversity and enzymes bioprospection of Antarctic filamentous fungi." Antarctic Science 31, no. 1 (2018): 3–12. http://dx.doi.org/10.1017/s0954102018000421.

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AbstractAntarctica is one of the most suitable locations for the bioprospecting of psychrotrophic fungi, which play a key role in the nutrient cycle and organic material mineralization in cold environments. These actions mainly take place via the production of several cold-active extracellular enzymes. The aim of this study was to investigate the diversity of filamentous fungi from King George Island (25 De Mayo Island), Antarctica and their ability to produce extracellular hydrolytic enzymes at low temperatures. A total of 51 fungal isolates were obtained from 31 samples. Twelve genera were i

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Sher, Hassan, Muhammad Faheem, Abdul Ghani, Rashid Mehmood, Hamza Rehman, and Syed A. I. Bokhari. "OPTIMIZATION OF CELLULASE ENZYME PRODUCTION FROM Aspergillus oryzae FOR INDUSTRIAL APPLICATIONS." World Journal of Biology and Biotechnology 2, no. 2 (2017): 155. http://dx.doi.org/10.33865/wjb.002.02.0088.

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Cellulases are the hydrolytic group of enzymes, responsible for release of sugars in the bioconversion of the cellulosic biomass into a variety of value added industrial products. Fungal isolated cellulases are well studied and playing a significant role in various industrial processes. Enzymatic depolymerisation of cellulosic material has been done by the various fungal isolated enzymes. In the present study, the cultivation conditions for cellulase production from Aspergillus species were optimized. Optimization of scarification conditions such as time course, inoculum size, carbon source an

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Kadowaki, Marco, Mariana Godoy, Patricia Kumagai, et al. "Characterization of a New Glyoxal Oxidase from the Thermophilic Fungus Myceliophthora thermophila M77: Hydrogen Peroxide Production Retained in 5-Hydroxymethylfurfural Oxidation." Catalysts 8, no. 10 (2018): 476. http://dx.doi.org/10.3390/catal8100476.

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Myceliophthora thermophyla is a thermophilic industrially relevant fungus that secretes an assortment of hydrolytic and oxidative enzymes for lignocellulose degradation. Among them is glyoxal oxidase (MtGLOx), an extracellular oxidoreductase that oxidizes several aldehydes and α-hydroxy carbonyl substrates coupled to the reduction of O2 to H2O2. This copper metalloprotein belongs to a class of enzymes called radical copper oxidases (CRO) and to the “auxiliary activities” subfamily AA5_1 that is based on the Carbohydrate-Active enZYmes (CAZy) database. Only a few members of this family have bee

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Pandey, Nidhi, Munesh Kumar Gupta, and Ragini Tilak. "Extracellular hydrolytic enzyme activities of the different Candida spp. isolated from the blood of the Intensive Care Unit-admitted patients." Journal of Laboratory Physicians 10, no. 04 (2018): 392–96. http://dx.doi.org/10.4103/jlp.jlp_81_18.

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ABSTRACT BACKGROUND: Candida spp. secretes various extracellular hydrolytic enzymes. These enzymes are the important virulence factor for the pathogenesis of Candida. We assessed four different enzymatic activities of Candida isolates obtained from bloodstream infections. MATERIALS AND METHODS: We isolated 79 strains of different Candida species from the blood of the Intensive Care Unit-admitted patients. Species were identified by conventional methods including culture characteristic, germ tube, sugar assimilation, and Dalmau's culture technique. Phospholipase, proteinase, hemolysin, and este

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LUCACI, ANCA IOANA, SIMONA NEAGU, ROXANA COJOC, ROBERT RUGINESCU, IOAN ARDELEAN, and MĂDĂLIN ENACHE. "Benefits of understanding the enzymatic activities in saline Lake Letea in the Danube Delta." Romanian Biotechnological Letters 26, no. 2 (2021): 2448–54. http://dx.doi.org/10.25083/rbl/26.2/2448.2454.

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The purpose of this paper was to isolate halophiles from Letea saline lake and to performed a screening for industrially relevant extracellular enzymes. The investigations were conducted from October 2016 until May 2018. After a random selection of colonies that grew on the medium culture, 82 isolates were investigated. Based on their salt requirements and tolerance, it was remarked the presence of isolates belonging to halotolerant and moderate halophilic bacteria. Morphological and biochemical tests were used to characterize them. The ability of the tested isolates to produce extracellular e

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Lusta, Konstantin A., Il Kyung Chung, Ill Whan Sul, Hee Sung Park, and Dong Ill Shin. "Immobilization of fungus Aspergillus sp. by a novel cryogel technique for production of extracellular hydrolytic enzymes." Process Biochemistry 35, no. 10 (2000): 1177–82. http://dx.doi.org/10.1016/s0032-9592(00)00158-8.

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Beckenkamp, Liziane Raquel, Isabele Cristiana Iser, Giovana Ravizzoni Onzi, et al. "Characterization of soluble CD39 (SolCD39/NTPDase1) from PiggyBac nonviral system as a tool to control the nucleotides level." Biochemical Journal 476, no. 11 (2019): 1637–51. http://dx.doi.org/10.1042/bcj20190040.

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Abstract Extracellular ATP (eATP) and its metabolites have emerged as key modulators of different diseases and comprise a complex pathway called purinergic signaling. An increased number of tools have been developed to study the role of nucleotides and nucleosides in cell proliferation and migration, influence on the immune system and tumor progression. These tools include receptor agonists/antagonists, engineered ectonucleotidases, interference RNAs and ectonucleotidase inhibitors that allow the control and quantification of nucleotide levels. NTPDase1 (also called apyrase, ecto-ATPase and CD

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Gupta, Sonika, Parul Sharma, Kamal Dev, and Anuradha Sourirajan. "Halophilic Bacteria of Lunsu Produce an Array of Industrially Important Enzymes with Salt Tolerant Activity." Biochemistry Research International 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/9237418.

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The halophilic bacterial isolates SS1, SS2, SS3, SS5, and SS8 were characterized for production of industrially important enzymes like amylase, protease, lipase, and glutaminase. Halophilic bacterial isolates SS1 and SS3 exhibited salt dependent extracellular amylase and protease activities. Both the halophilic isolates SS1 and SS3 exhibited maximum amylase and protease activities in the presence of 1.5 and 1.0 M NaCl, respectively, with the optimum pH 8 and temperature 40°C. SS2 showed maximum extracellular protease and lipase activities in the presence of 0.75 M NaCl, at optimum pH of 7, and

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Kobayashi, Donald Y., Ralph M. Reedy, Jeffrey D. Palumbo, Jun-Ma Zhou, and Gary Y. Yuen. "A clp Gene Homologue Belonging to the Crp Gene Family Globally Regulates Lytic Enzyme Production, Antimicrobial Activity, and Biological Control Activity Expressed by Lysobacter enzymogenes Strain C3." Applied and Environmental Microbiology 71, no. 1 (2005): 261–69. http://dx.doi.org/10.1128/aem.71.1.261-269.2005.

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ABSTRACT Lysobacter enzymogenes strain C3, a biological control agent for plant diseases, produces multiple extracellular hydrolytic enzymes and displays antimicrobial activity against various fungal and oomycetous species. However, little is known about the regulation of these enzymes or their roles in antimicrobial activity and biocontrol. A study was undertaken to identify mutants of strain C3 affected in extracellular enzyme production and to evaluate their biocontrol efficacy. A single mini-Tn5-lacZ 1 -cat transposon mutant of L. enzymogenes strain C3 that was globally affected in a varie

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