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2. Optimization of o-cresol degrading microorganism and kinetics of degradation

Author

Krishnan Nhattuketty Shainy and Rajamanickam Usha

Subjects
biodegradation, o-cresol, Pseudomonas monteilii, petroleum contaminated soil, Chemistry, QD1-999
Abstract

In the present study, Pseudomonas monteilii CR13 isolated from petroleum contaminated soil demonstrated the highest specific o-cresol degradation rate at all tested o-cresol concentrations and also was not disturbed by the starting substrate concentration used (o-cresol-500 mg/L). After a serial transfer of the isolate into a series of increasing o-cresol level, the organism demonstrated significant improvement on degradation ability up to 3000 mg/L. The optimum condition for the cell mass increase and biodegradation of o-cresol by Pseudomonas monteilii was in the minimal mineral medium of 3 at a pH of 6.5 and temperature 30 °C, stirring velocity of 160 rpm, and the substrate concentration of 500 mg/L. The biodegradation kinetic study was carried out by bacteria in different initial substrate concentrations (500–3000 mg/L). In the present test the μmax, Ks and the μ were found 0.332 h-1, 0.166 mg/L and 0.0282 mg/L for 500 mg/L of o-cresol, respectively. The organism is highly promising and could be used to remove high concentrations of o-cresol from highly polluted aquatic and soil regions. The cells could be immobilized on a suitable matrix and the efficiency of degradation could be effectively improved.

Published
2018
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3. List of contributors

Author

Buzuayehu Abebe, S.K. Ajithaa, N.S. Alfia, Abuzer Amir, Embalil Mathachan Aneesh, A. Archana, R. Arulvel, Sangeetha Arunachalam, null Ashish, Jose Gnanaleela Aswin Jeno, Sthita Pragnya Behera, B. Bharathiraja, Pooja Bhardwaj, Nilutpal Bhuyan, Parameswaran Binod, Neelam Bora, Arghya Chakravorty, Ramachandran Chelliah, Sivasankaran Chozhavendhan, Patitapaban Dash, Flávio A. de Freitas, Ponnuswamy Renuka Devi, Vivek Dhand, Balaji Dhandapani, Lakshman Kumar Dogiparthi, Anurag Dutta, Rajalakshmanan Eshwaramoorthy, T. Gajendran, Lekshmi Gangadhar, Sujay Ghosh, G. Gowshikaa, Neeraj Gupta, R.V. Hemavathy, J. Jayabharathi, Mani Jayakumar, R. Jayasree, S. Jeevanantham, Senthilkumar Kandasamy, A. Karthic, Guruviah Karthigadevi, S. Karthikadevi, M. Karthikeyan, Rupam Kataki, Imran Khan, V. Kirubakaran, Jayachandran Krishna, Suresh Kumar Krishnan, Kannaiyan Sathish Kumar, Madhava Anil Kumar, Naresh Kumar, P. Senthil Kumar, Pratyush Kumar Das, Manonmani Kumaraguruparaswami, S. Chaitanya Kumari, Dibyajit Lahiri, Jaya Lakkakula, Márcia S.F. Lira, G. Carlin Geor Malar, Anurag Malik, Prasad Mandade, Naveen Kumar Manickam, S. Manikandan, Bishwambhar Mishra, Rajkamal Mohan, Gokilam Mohankumar, H.C. Ananda Murthy, K. Muthukumar, Moupriya Nag, Senthil Nagappan, Ekambaram Nakkeeran, Abhishek Nalluri, M. Narmatha, Vinod Kumar Nathan, Francisco X. Nobre, Deog-Hwan Oh, P. Naga Padma, Ashok Pandey, Sherly A. Paul, Aditya Amrut Pawar, Ayyappasamy Sudalaiyadum Perumal, Wanison A.G. Pessoa, N. Prabhu, Venkatesa Prabhu S, Minakshi Prasad, K.M. Prasannakumaran, Bidyut Prava Das, N. Praveen, R. Praveen Kumar, D. Premkumar, Himani Punia, S. Rachel, Murgan Rajamehala, Selvarasu Ranganathan, Gulzar Ahmed Rather, Sathish Raam Ravichandran, Rina Rani Ray, Sharrel Rebello, C. Nagendranatha Reddy, R. Reshmy, Huria Rizvi, S. Samraj, Siva Sankar Sana, S. Sangeetha Gandhi, C. Sanjay Kumar, A. Saravanan, Muthulingam Seenuvasan, I. Aberna Ebenezer Selvakumari, G. Adaikala Selvan, Mothil Sengottian, Parvati Sharma, S. Sharvari, Raveendran Sindhu, Bharati Singh, M. Vijay Pradhap Singh, R. Subbaiya, Kavitha Subbiah, Rajaram Sundaramoorthy, Caroline Mercy Andrew Swamidoss, Mitsuo L. Takeno, Deepa Thomas, Anitha Thulasisingh, Belachew Zegale Tizazu, Jayanti Tokas, Rajamanickam Usha, V.L. Vasantha, Kamini Velhal, Chidambaram Kulandaisamy Venil, M. Venkata Ratnam, Chitra Devi Venkatachalam, Krishnan Vignesh, Y. Vineetha, Ravichandran Viveka, Shuai Wei, P.R. Yaashikaa, and Rajasri Yadavalli

Published
2021

4. List of contributors

Author

Jayanthi Abraham, Gordon Ajonina, Santosh Anand, T. Angami, Dorothy D. Anita, Chhetri Ashok, Armand Assengze, Somorita Baishya, Sheuli Kangsa Banik, Anwesha Barik, Giridhara Basappa, B.C. Behera, Muriel Bitomo, Ankita Chatterjee, Manabendra Dutta Choudhury, Swagat Kumar Das, B. Devadatha, Ponnuswamy Renuka Devi, Didier Dibong, Bhagyalakshmi Dundaiah, Hari Gajula, G.A. Gayathri, Mamatha Madhugiri Gopinath, Anupama Sindhghatta Kariyappa, K. Kathiresan, Jonas Kemajou, Vadlapudi Kumar, Priyanka Kumari, Gargi Lotlikar, Shantikumar Lukram, Gayathri Mahalingam, Chandrakumar Singh Mayanglambam, R.R. Mishra, M.R. Mohanta, Jayashree Mohanty, J-Hude Moudingo, Sanika Naik-Samant, R. Nathiya, Taibangnganbi Chanu Ngathem, Manasa Kumar Panda, Bhawana Pathak, B.K. Pradhan, J. Rajashekar, Sowbhagya Ramachandregowda, S.C. Sahu, Torankumar Sannabommaji, Angana Sarkar, Satyajit Sarker, V. Venkateswara Sarma, Ahana Sengupta, Amit Kumar Singh, Jitendra Kumar Singh, Mayanglambam Chandrakumar Singh, Siddhartha Singh, Yengkhom Disco Singh, Kandikere R. Sridhar, Anupam Das Talukdar, Deepa Das Talukdar, Ravikiran Tekupalli, Hrudayanath Thatoi, Minette Tomedi, Rajamanickam Usha, Supriya Vaish, Chidambaram Kulandaisamy Venil, Sujeet Kumar Verma, Poornima D. Vijendra, Amadou Wassouni, and Disco Singh Yengkhom

Published
2020

5. Optimization of o-cresol degrading microorganism and kinetics of degradation

Author

Rajamanickam Usha and Krishnan Nhattuketty Shainy

Subjects
biology, o-Cresol, Pseudomonas monteilii, Microorganism, Kinetics, Substrate (chemistry), General Chemistry, Cresol, Biodegradation, biology.organism_classification, biodegradation, o-cresol, chemistry.chemical_compound, Chemistry, chemistry, parasitic diseases, medicine, Degradation (geology), petroleum contaminated soil, QD1-999, Nuclear chemistry, medicine.drug
Abstract

In the present study, Pseudomonas monteilii CR13 isolated from petroleum contaminated soil demonstrated the highest specific o -cresol degradation rate at all tested o -cresol concentrations and also was not disturbed by the starting substrate concentration used ( o -cresol-500 mg/L). After a serial transfer of the isolate into a series of increasing o -cresol level, the organism demonstrated significant improvement on degradation ability up to 3000 mg/L. The optimum condition for the cell mass increase and biodegradation of o -cresol by Pseudomonas monteilii was in the minimal mineral medium of 3 at a pH of 6.5 and temperature 30 °C, stirring velocity of 160 rpm, and the substrate concentration of 500 mg/L. The biodegradation kinetic study was carried out by bacteria in different initial substrate concentrations (500–3000 mg/L). In the present test the μ max , K s and the μ were found 0.332 h -1 , 0.166 mg/L and 0.0282 mg/L for 500 mg/L of o -cresol, respectively. The organism is highly promising and could be used to remove high concentrations of o -cresol from highly polluted aquatic and soil regions. The cells could be immobilized on a suitable matrix and the efficiency of degradation could be effectively improved.

Published
2018

6. Identification and characterization of cresol degrading Pseudomonas monteilii strain SHY from Soil samples.

Author

Krishnan SN, Nayarisseri A, and Rajamanickam U

Abstract

Cresol is an organic pollutant discharged by pharmaceutical, pesticide, coal and gasification industries causing severe organ failure in humans. Therefore, it is of interest to isolate microbes from contaminated site for degrading cresol. We isolated a strain (CR-13) that survives at 5000ppm cresol with about 80 percent cresol degradation ability. Immobilized cells showed >99 percent degradation at high concentration of cresol. The 16S rRNA sequence (accession number: MF278026) deposited in GenBank was used for phylogenetic tree analysis and the strain was grouped under Pseudomonas monteilii. The isolated cresol degrading strain was subsequently named as Pseudomonas monteilii SHY.

Published
2018
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7. Biodegradation effects of o-cresol by Pseudomonas monteilii SHY on mustard seed germination.

Author

Krishnan SN, Nayarisseri A, and Rajamanickam U

Abstract

Cresols are ubiquitous due to industrial production and natural presence. o-cresol (2-methyl phenol) is highly toxic to both fauna and flora. It has been included in the EPA list as one of the priority pollutants. The deleterious effects of pesticides, herbicides, and many other chemical compounds on seed germination are known. However, the effect of o-cresol on seed germination is not known. Therefore, it is of interest to study the effect of o-cresol on germination of 13 different vegetable crop seeds using standard Filter Paper Method. There is no effect on germination for brinjal, red chili, and (green gram, chickpea, cucumber, tomato, fenugreek, cowpea, Green pea, coriander, and spinach, seeds even at 1500 mg/l of o-cresol However, okra and mustard were found to be sensitive to ocresol. Germination of mustard under controlled concentration of o-cresol showed similar results by soil method. It was found that germination percentage and seedling vigour (Vigour Index) was reduced by o-cresol. The percent germination was reduced to 64 and 12 at 25 and 50 mg o-cresol/kg soil as against 100% in the case of untreated control. The vigour index was reduced to 160 and 10, respectively as against of 646 that for the control. The viability of seeds by 2,3,5 - tetrazolium trichloride (TTC) test showed that a considerable reduction was observed at 200mg/l o-cresol. Reduced protease and amylase activity in o-cresol shows inhibited mustard generation. However, mustard generation inhibition was restored by the bioremediation of o-cresol using Pseudomonas monteilii SHY. Thus, the biodegradation effects of o-cresol by Pseudomonas monteilii SHY on mustard seed germination are shown.

Published
2018
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