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Halotolerant Biofilm in Coffee Beans for Phenanthrene Degradation Under Selected Culture Conditions through a Plackett-Burman Experimental Design | OMICS International | Abstract
ISSN: 2155-6199

Journal of Bioremediation & Biodegradation
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Review Article

Halotolerant Biofilm in Coffee Beans for Phenanthrene Degradation Under Selected Culture Conditions through a Plackett-Burman Experimental Design

Sonia Myriam Acosta-Rubí1, Araceli Tomasini-Campocosio2, María Del Carmen Montes-Horcasitas1, Liliana Quintanar-Vera3, Fernando Esparza-García1 and Refugio Rodríguez-Vázquez1*

1Department of Biotechnology, Center for Research and Advanced Studies of the National Polytechnic Institute, AV Instituto Politécnico Nacional, Col San Pedro Zacatenco, Mexico

2Department of Biotechnology, Universidad Autónoma Metropolitana-Iztapalapa, AV San Rafael Atlixco, Col Vicentina, Mexico

3Department of Chemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, AV Politécnico Nacional, Col San Pedro Zacatenco, Mexico

*Corresponding Author:
Refugio Rodríguez-Vázquez
Department of Biotechnology
Center for Research and Advanced Studies of the National
Polytechnic Institute, AV Instituto Politécnico Nacional
Col San Pedro Zacatenco, Mexico
Tel: +5257477000
Fax: +5257477000/7002
E-mail: rrodrig@cinvestav.mx

Received date: November 05, 2016; Accepted date: November 16, 2016; Published date: November 18, 2016

Citation: Acosta-Rubí SM, Tomasini-Campocosio A, Montes-Horcasitas MDC, Quintanar-Vera L, Esparza-García F, et al. (2016) Halotolerant Biofilm in Coffee Beans for Phenanthrene Degradation Under Selected Culture Conditions through a Plackett-Burman Experimental Design. J Bioremediat Biodegrad 7:377. doi:10.4172/2155-6199.1000377

Copyright: © 2016 Acosta-Rubí SM, et al. This is an open-a ccess article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

A halotolerant biofilm was developed on green coffee beans by sequential enrichment in the presence of diesel in order to degrade phenanthrene. Experiments were performed under several combined culture conditions using a Plackett-Burman experimental design. The microorganisms composing the biofilm were identified. These included three fungi, Aspergillus niger, Fusarium solani and Fusarium oxysporum, identified by the Fungal Biodiversity Centre of Holland by macroscopic and microscopic morphological evaluation and by molecular techniques (18s-ITS1-5.8SITS2- 28s rRNA); two yeasts, Candida orthopsilosis and Rhodotorula mucilaginosa; and two bacteria, Pseudomonas putida and Klebsiella variicola, identified by the Mexican Collection of Microbial Cultures (Colección Mexicana de Cultivos Microbianos, CINVESTAV) according to colony morphology and biochemical [API 20C AUX and API20 (NE and E), respectively] and molecular (fragments ITS1-5.8S-16s-26s and 16s rRNA, respectively) tests. Each microorganism and biofilm were tested for their tolerance to diesel and salinity conditions and their capacity to degrade phenanthrene; degradation capacity was affected significantly (α<0.05) at low concentrations of NaNO3 and KH2 PO4 and at high concentrations of peptone, CaCO3 and FeSO4 (R2=0.95; C=24.97). Two of the tested conditions, T2 and T5, degraded 91.92% and 89.33%, respectively, of 180 mg/L of phenanthrene. Thus, the biofilms developed from microorganisms of green coffee beans preadapted to salinity conditions presented the metabolic capability to remove phenanthrene from seawater under selective culture conditions.

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