el chichón volcano
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2021 ◽  
Vol 106 (1) ◽  
pp. 1011-1035
Author(s):  
Miguel A. Alatorre-Ibargüengoitia ◽  
Karina Hernández-Urbina ◽  
Silvia G. Ramos-Hernández


Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2172
Author(s):  
Sandy Luz Ovando-Chacon ◽  
Veymar Guadalupe Tacias-Pascacio ◽  
Guillermo Efren Ovando-Chacon ◽  
Arnulfo Rosales-Quintero ◽  
Abelardo Rodriguez-Leon ◽  
...  

This study reports for the first time the isolation, identification and characterization of lipase-producing thermophilic strain from the geothermal water of the El Chichón volcano crater lake. Two strains were identified by 16S rRNA sequencing as Geobacillus jurassicus CHI2 and Geobacillus stearothermophilus CHI1. Results showed that G. jurassicus CHI2 is Gram-positive, able to ferment maltose, fructose and sucrose and to hydrolyze starch and casein; while G. stearothermophilus CHI1 showed to be Gram-variable, able to ferment maltose and fructose and to hydrolyze starch. Colonies of both strains presented irregular shape, umbilicated elevation of gummy texture and cells presented flagellar movement to survive in fluids with high temperature and mass gradients due to complex phenomena of heat and mass transfer present in the geothermal fluids. Lipase production for G. stearothermophilus CHI1 was also evaluated. It was found that this strain possesses a growth associated with extracellular lipase production with a high activity of 143 U/mL at 8.3 h of incubation time, superior to the activities reported for other microorganisms of genus Geobacillus; for this reason, it can be said that the thermal flow of the El Chichón volcano crater lake can be a useful source of lipase-producing thermophilic bacteria.





Geology ◽  
2016 ◽  
Vol 45 (2) ◽  
pp. 175-178 ◽  
Author(s):  
Kees Nooren ◽  
Wim Z. Hoek ◽  
Hans van der Plicht ◽  
Michael Sigl ◽  
Manfred J. van Bergen ◽  
...  


2016 ◽  
Vol 311 ◽  
pp. 170-182 ◽  
Author(s):  
Brenda Pack ◽  
Axel K. Schmitt ◽  
Julie Roberge ◽  
Felipe Garcia Tenorio ◽  
Brian N. Damiata


2016 ◽  
Vol 81 (3) ◽  
pp. 1733-1744 ◽  
Author(s):  
Miguel A. Alatorre-Ibargüengoitia ◽  
Horacio Morales-Iglesias ◽  
Silvia G. Ramos-Hernández ◽  
Juan Jon-Selvas ◽  
Julio M. Jiménez-Aguilar


2014 ◽  
Vol 285 ◽  
pp. 118-128 ◽  
Author(s):  
María Aurora Armienta ◽  
Servando De la Cruz-Reyna ◽  
Silvia Ramos ◽  
Nora Ceniceros ◽  
Olivia Cruz ◽  
...  


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