Microbial decoloration of dyes by Bacillus aryabhattai

Microbial decoloration of dyes by Bacillus aryabhattai

New Biotechnology · Volume 33, Number 3 · May 2016 [3]. Ledesma-Amaro R, Santos MA, Jiménez A, Revuelta JL. Appl Environ Microbiol 2014;80(4):1237–44...

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New Biotechnology · Volume 33, Number 3 · May 2016 [3]. Ledesma-Amaro R, Santos MA, Jiménez A, Revuelta JL. Appl Environ Microbiol 2014;80(4):1237–44. [4]. Ledesma-Amaro R, Santos MA, Jiménez A, Revuelta JL. Biotechnol Bioeng 2014;111(9):1782–91.

http://dx.doi.org/10.1016/j.nbt.2015.10.019

PS – R14

POSTERS

PS – R15

3. Bioenergy and bioremediation Innovative applications of haloarchaea to waste water treatments and biotechnological uses of the biomass produced

3. Bioenergy and bioremediation

Rodrigo-Ba˜nos 1 , C. Pire 1 , I. Javier Torregrosa-Crespo 1 , M. 2 2 1 1 Garbayo , C. Vilchez , Julia Esclapez , V. Bautista , M. Camacho 1 , M.J. Bonete 1 , R.M. Martínez-Espinosa 1,∗

Microbial decoloration of dyes by Bacillus aryabhattai

1

Alicia Paz 1,2 , Julia Carballo 3 , María José Pérez 3 , Sandra Cortés Diéguez 1,2 , José Manuel Domínguez 1,2,∗

División de Bioquímica y Biología Molecular. Facultad de Ciencias, Universidad de Alicante, 03080 Alicante, Spain 2 Algal Biotechnology Group, Centro de Investigación y Desarrollo de Recursos y Tecnologías Agroalimentarias, University of Huelva, 21760 Huelva, Spain

1

E-mail address: [email protected] (R.M. Martínez-Espinosa).

Chemical Engineering Department, Faculty of Sciences, University of Vigo (Campus Ourense), As Lagoas s/n, 32004 Ourense, Spain 2 Laboratory of Agro-food Biotechnology, CITI-University of Vigo, Tecnópole, ˜ Ourense, Spain Technological Park of Galicia, San Cibrao das Vinas, 3 Microbiology, Faculty of Sciences, University of Vigo (Campus Ourense), As Lagoas s/n, 32004 Ourense, Spain

E-mail address: [email protected] (J.M. Domínguez). Previous works conducted in our laboratory reveled that Bacillus aryabhattai showed interesting enzymatic activities such as cellulase, laccase and pectinases, opening new applications in different bioprocesses. In this sense, the treatment of disposal residues such as dyes from the textile industry with this microorganism can be an attractive process, since textile processing industries consume large volumes of water and their effluents have dyes with concentrations ranging from 0.01 to 0.2 g/L, being an important source of environmental pollution. Preliminary results showed the ability of this microorganism to remove dyes on agar plates containing Coomassie Brilliant Blue, Remazol Brilliant Blue R and Brilliant Green (0.050 g/L). These results also suggested that degradation of dyes depends on the culture medium used. The aim of this work is the study of the ability to remove or adsorb different dyes by B. aryabhattai in both liquid and solid culture media as well as their optimal conditions. http://dx.doi.org/10.1016/j.nbt.2015.10.020

Haloarchaea constitute a major part of microbial populations in hostile environments, playing a crucial role in regulating biogeochemical cycles in them. Knowledge on archaeal denitrification and NOx gases production is still limited. Most of the studies reported on haloarchaeal denitrification suggest that some species perform complete denitrification, reducing NO3 − to N2 , which is released into the atmosphere. These organisms can be used in wastewater treatments. Previous studies using denitrifying haloarchaea demonstrated that they are able to reduce high concentrations of NO3 − to N2 (some of the species remove efficiently up to 2 M NO3 − plus up to 60 mM NO2 − , which are the highest concentrations described up to now [1]). This is an innovative way to treat wastewater that allows brines and salty waters treatments/recycling. The aim of this work is to design middle scale bioremediation treatments using haloarchaea. Moreover, some haloarchaea denitrifiers that will be used for wastewater treatments produce high amount of carotenoids, which have high interest for several industrial sectors (cosmetics, pharmacology, animal feed). Reference [1]. Nájera-Fernández C, Zafrilla B, Bonete MJ, Martínez-Espinosa RM. Int Microbiol 2012;15(September (3)):111–9.

http://dx.doi.org/10.1016/j.nbt.2015.10.021

PS – R16

3. Bioenergy and bioremediation Tobacco as raw material for the production bioethanol: increased yield by overexpression thioredoxin f in the chloroplast

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Jon Veramendi ∗ , Inmaculada Farran, Alicia Fernández-San Millán, María Ancín, Luis Larraya Instituto de Agrobiotecnología, Universidad Pública de Navarra-CSIC, Campus Arrosadía 31006 Pamplona, Spain

E-mail address: [email protected] (J. Veramendi). Bioethanol is mainly produced from food crops such as sugarcane or maize, and has been held partly responsible for food www.elsevier.com/locate/nbt 421