Ligninolytic Enzyme Activity and Removal Efficiency of Pharmaceuticals in a Water Matrix by Fungus Rhizopus sp. Isolated from Cassava

2022 ◽  
pp. 1-32
Author(s):  
Teddy Kabeya Kasonga ◽  
Ilunga Kamika ◽  
Veronica M Ngole-Jeme
2013 ◽  
pp. 437-444 ◽  
Author(s):  
Aleksandar Knezevic ◽  
Ivan Milovanovic ◽  
Mirjana Stajic ◽  
Jelena Vukojevic

Species of the genus Trametes represent one of the most efficient lignin-degraders which can be attributed to a well developed ligninolytic enzyme system. Current trends are screening of ability of new species to produce these enzymes, as well as the optimization of conditions for their overproduction. Therefore, the aim of the study was to evaluate the potential of T. suaveolens to synthesize laccase and Mn-oxidizing peroxidases during fermentation of the selected plant raw materials. Level of enzyme activities was measured on 7, 10 and 14th day of submersion, as well as the solid-state fermentation of wheat straw and oak sawdust in the presence of NH4NO3 in previously determined optimal nitrogen concentration of 25 mM. The enzyme activity was determined spectrophotometrically using ABTS and phenol red as the substrates. The highest level of laccase activity (1087.1 U/L) was noted after 7 days of wheat straw solid-state fermentation, while during the submerged cultivation the production of the enzyme was not noted. Submerged cultivation in oak sawdust-enriched medium was the optimal for activity of Mn-dependent peroxidase (1767.7 U/L on day 14) and Mn-independent peroxidase (1113.7 U/L on day 7). Introduction of T. suaveolens to produce ligninolytic enzyme represented the base for further study, as well as the determination of relation between enzyme activity and rate of lignin degradation. It could lead to greater possibility of fungal species selection with high delignification capacity, which could take participation in sustainable production of food, feed, fibres, and energy, environmentally friendly pollution prevention, and bioremediation.


2019 ◽  
Vol 87 (1) ◽  
Author(s):  
Firda DIMAWARNITA ◽  
TRI - PANJI

Ligninolytic enzymes are known as extracellular enzymes produced by the white rot fungi class of basidiomycetes. One of the most well-known fungi of the white rot fungus isPleurotus ostreatus. The aim of this study to calculate the activity of ligninolytic enzymes in the growth media of Pleurotus ostreatusand their application in decolorization of dye colour. The ligninolytic enzyme extract obtained was used to decolorize bluedyes (MethyleneBlue)and red dyes(Congo Red). The highest laccase enzyme activity was in the first month of 0.35 U/mL with E1 media composition; the highest manganese peroxidase (MnP) enzyme activity was in the fourth month at 31.818 U / mL with E4 media composition; and the highest lignin peroxidase (LiP) enzyme activity was in the fifth month at 0.269 U / mL with E1 media composition. The enzyme extract obtained was then applied to decolorize red and blue dyes. Decolorization of dyes was measured using spectrophotometry with a blue wavelength of 470 nm and red 685 nm. The highest reduction in decolorization of blue dye and red dye was 12 hours with concentration of enzyme addition of 0.5%. Based on these results, ligninolytic enzymes potentiallyto be developed as bioactive agents for detergents.[Keywords: decolorization, laccase, mangan peroxidase, lignin peroxidase, spectrofotometry] AbstrakEnzim ligninolitik dikenal sebagai enzim ekstraseluler yang dihasilkan oleh jamur pelapuk putih golongan basidiomycetes. Salah satu jamur dari golongan jamur pelapuk putih yang banyak dikenal adalah Pleurotus ostreatus. Penelitian ini bertujuan menghitung aktivitas enzim ligninolitik pada media pertumbuhan jamur tiram  (Pleurotus ostreatus) dan aplikasinya dalam dekolorisasi zat warna.  Ekstrak enzim ligninolitik yang didapatkan kemudian dimanfaatkan untuk dekolorisasi zat warna biru(Methylene Blue)dan merah (Congo Red). Aktivitas enzim lakase tertinggi ada pada bulan pertama sebesar 0,35 U/mL dengan komposisi media E1; aktivitas enzim mangan peroksidase (MnP) tertinggi ada pada bulan keempat sebesar 31,818 U/mL dengan komposisi media E4; dan aktivitas enzim lignin peroksidase (LiP) tertinggi ada pada bulan kelima sebesar 0,269 U/mL dengan komposisi media E1. Ekstrak enzim yang didapat kemudian diaplikasikan untuk dekolorisasi zat warna merah dan biru. Dekolorisasi zat warna diukur menggunakan spektrofotometri dengan panjang gelombang biru pada 470 nm dan merah pada 685 nm. Penurunan dekolorisasi zat warna birudan zat warna merahtertinggi selama 12jam dengan konsentraasi penambahan enzim sebesar 0,5%.Berdasarkan hasil tersebut, enzim ligninolitik sangat potensial untuk dikembangkan sebagai agen bioaktif untuk deterjen.[Kata kunci: dekolorisasi, lakase, mangan peroksidase, lignin peroksidase,  spektrofotometri]


2013 ◽  
Vol 03 (08) ◽  
pp. 31-36 ◽  
Author(s):  
Regiane Gonçalves Feitosa Leal Nunes ◽  
Jose Maria Rodrigues da Luz ◽  
Elizabete Fantuzzi ◽  
Maria Catarina Megumi Kasuya ◽  
Maria Cristina Dantas Vanetti

2010 ◽  
Vol 98 (4) ◽  
pp. 483-504 ◽  
Author(s):  
Leonardo Casieri ◽  
Antonella Anastasi ◽  
Valeria Prigione ◽  
Giovanna Cristina Varese

2017 ◽  
Vol 13 (4) ◽  
pp. 158-163
Author(s):  
Hong-Duck Sou ◽  
Rhim Ryoo ◽  
Kang-Hyeon Ka ◽  
Hyun Park

2007 ◽  
Vol 53 (10) ◽  
pp. 1150-1157 ◽  
Author(s):  
Citlalli Harris-Valle ◽  
Martín Esqueda ◽  
Alfonso Sánchez ◽  
Miguel Beltrán-García ◽  
Elisa M. Valenzuela-Soto

Lentinula edodes is considered an alternative recycling agent for agricultural wastes, and there have been several studies to understand the relationship between its growth and ligninolytic activity. We tested the effect of wood from viticulture pruning, extracted with solvents of differing polarity, on the biomass production and activity pattern of ligninolytic enzymes. The analysis was done by measuring the mycelial dry mass and enzyme activity of liquid growth medium during the culture of L. edodes, adding either single extracts or a combination of extracts. Polar extracts enhanced mycelial production, and the activity patterns of lignin peroxidase, manganese peroxidase, aryl alcohol oxidase, and laccase were comparable to their activities predicted by ligninolysis models proposed for other fungi. We conclude that the polar extracts could be useful for enhancing fungal biomass production and for modifying lignin degradation because the regulation of ligninolytic enzyme activity is differentially influenced by the polarity of the extract.


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