scholarly journals Influence of Sulfobacillus thermosulfidooxidans on Initial Attachment and Pyrite Leaching by Thermoacidophilic Archaeon Acidianus sp. DSM 29099

Minerals ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 76 ◽  
Author(s):  
Jing Liu ◽  
Qian Li ◽  
Wolfgang Sand ◽  
Ruiyong Zhang
Keyword(s):  
Initial Attachment ◽  
Sulfobacillus Thermosulfidooxidans

scholarly journals Effect of Sodium Chloride on Pyrite Bioleaching and Initial Attachment by Sulfobacillus thermosulfidooxidans

2020 ◽  
Vol 11 ◽  
Author(s):  
Dieu Huynh ◽  
Javiera Norambuena ◽  
Christin Boldt ◽  
Stefan R. Kaschabek ◽  
Gloria Levicán ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Initial Attachment ◽  
Sulfobacillus Thermosulfidooxidans

Initial Attachment of MC3T3-E1 Cells on Nano-HAp Surfaces

2007 ◽  
Vol 361-363 ◽  
pp. 1115-1118
Author(s):  
Un Hye Kwon ◽  
Jung Suk Han ◽  
In Young Ryu ◽  
Dae Joon Kim
Keyword(s):  
Surface Roughness ◽  
Cell Adhesion ◽  
Fluorescence Microscopy ◽  
Cell Morphology ◽  
Confocal Laser ◽  
Initial Attachment ◽  
Zirconia Ceramics ◽  
Initial Cell ◽  
Cell Adhesion Proteins ◽  
Initial Cell Adhesion

The initial osteoblast like cell response to bioactive nano-sized hydroxyapatite (HAp) and bioinert zirconia was evaluated with the cell morphology by SEM and cell adhesion proteins by fluorescence microscopy. Surface roughness also measured by a confocal laser microscopy. The surface roughness and topography was almost identical among specimens. The nano-sized HAp specimens showed better initial cell adhesion and activity than bioinert zirconia ceramics.

Comparison of Bioleaching High Arsenic-Bearing Copper Sulphide Concentrate Using Thiobacillus Ferrooxidans and Sulfobacillus Thermosulfidooxidans

2012 ◽  
Vol 524-527 ◽  
pp. 1997-2003
Author(s):  
Hai Yun Xie ◽  
Zhuo Yue Lan ◽  
Shu Ming He ◽  
Li Kun Gao ◽  
Xiong Tong
Keyword(s):  
Thiobacillus Ferrooxidans ◽  
Arsenic Sulfide ◽  
High Concentration ◽  
Initial Concentration ◽  
Copper Concentrate ◽  
Leaching Process ◽  
Sulfobacillus Thermosulfidooxidans ◽  
Moderate Thermophile ◽  
Arsenic Copper ◽  
High Arsenic

The usage of high-arsenic sulfide copper concentrate were limited because the arsenic in the concentrate harms the qualities of copper product and pollutes the environment. In this paper an innovative process for high-arsenic copper sulfide concentrate with with bio-oxidation respectively Thiobacillus ferrooxidans and moderate thermophile Sulfobacillus thermosulfidooxidans has been studied out, and the influencing factors have been comparative studied during the leaching process, such as concentration particle size, leaching methods, pulp concentration, leaching time and the initial concentration of Fe3+, etc. Under the suitable leaching conditions, the experiments results show that the concentrate is leached 47.13% of Cu,50.09% of As and 52.46% of Fe by Thiobacillus ferrooxidans and 82.39% of Cu,78.21% of As and 40.38% of Fe by moderate thermophile Sulfobacillus thermosulfidooxidans. The high concentration initial Fe3+ has speeded leaching process up in the presence of moderate thermophile Sulfobacillus thermosulfidooxidans, and when the pulp initial concentration of Fe3+ is in the range of 0.08~0.32mol/L, the leaching rate of Cu is 86.34~97.06%, As 89.22~94.13%. It is concluded that Sulfobacillus thermosulfidooxidans have a better effect on bioleaching high-arsenic sulfide copper concentrate than Thiobacillus ferrooxidans.

scholarly journals Enhancement of Biofilm Formation on Pyrite by Sulfobacillus thermosulfidooxidans

Minerals ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 71 ◽  
Author(s):  
Qian Li ◽  
Wolfgang Sand ◽  
Ruiyong Zhang
Keyword(s):  
Biofilm Formation ◽  
Sulfobacillus Thermosulfidooxidans

scholarly journals Altering the Ratio of Phenazines in Pseudomonas chlororaphis (aureofaciens) Strain 30-84: Effects on Biofilm Formation and Pathogen Inhibition

2008 ◽  
Vol 190 (8) ◽  
pp. 2759-2766 ◽  
Author(s):  
V. S. R. K. Maddula ◽  
E. A. Pierson ◽  
L. S. Pierson
Keyword(s):  
Fungal Pathogen ◽  
Biofilm Formation ◽  
Flow Cell ◽  
Gaeumannomyces Graminis ◽  
Pseudomonas Chlororaphis ◽  
Wild Type ◽  
Initial Attachment ◽  
Pathogen Inhibition ◽  
Biofilm Development ◽  
Derivatives Of

ABSTRACT Pseudomonas chlororaphis strain 30-84 is a plant-beneficial bacterium that is able to control take-all disease of wheat caused by the fungal pathogen Gaeumannomyces graminis var. tritici. The production of phenazines (PZs) by strain 30-84 is the primary mechanism of pathogen inhibition and contributes to the persistence of strain 30-84 in the rhizosphere. PZ production is regulated in part by the PhzR/PhzI quorum-sensing (QS) system. Previous flow cell analyses demonstrated that QS and PZs are involved in biofilm formation in P. chlororaphis (V. S. R. K. Maddula, Z. Zhang, E. A. Pierson, and L. S. Pierson III, Microb. Ecol. 52:289-301, 2006). P. chlororaphis produces mainly two PZs, phenazine-1-carboxylic acid (PCA) and 2-hydroxy-PCA (2-OH-PCA). In the present study, we examined the effect of altering the ratio of PZs produced by P. chlororaphis on biofilm formation and pathogen inhibition. As part of this study, we generated derivatives of strain 30-84 that produced only PCA or overproduced 2-OH-PCA. Using flow cell assays, we found that these PZ-altered derivatives of strain 30-84 differed from the wild type in initial attachment, mature biofilm architecture, and dispersal from biofilms. For example, increased 2-OH-PCA production promoted initial attachment and altered the three-dimensional structure of the mature biofilm relative to the wild type. Additionally, both alterations promoted thicker biofilm development and lowered dispersal rates compared to the wild type. The PZ-altered derivatives of strain 30-84 also differed in their ability to inhibit the fungal pathogen G. graminis var. tritici. Loss of 2-OH-PCA resulted in a significant reduction in the inhibition of G. graminis var. tritici. Our findings suggest that alterations in the ratios of antibiotic secondary metabolites synthesized by an organism may have complex and wide-ranging effects on its biology.

scholarly journals An Insight into the Role of Benefical Bacteria in Periodontal Pocket Recolonization: A Literature Review

2014 ◽  
Vol 8 (1) ◽  
pp. 47-50
Author(s):  
SM Apoorva ◽  
A Suchetha ◽  
DB Mundinamane ◽  
DP Bhopale ◽  
A Bharwani ◽  
...  
Keyword(s):  
Bacterial Species ◽  
Periodontal Pocket ◽  
Human Beings ◽  
Beneficial Bacteria ◽  
Initial Attachment ◽  
Bacterial Interactions ◽  
Tooth Surfaces ◽  
Free People ◽  
Insight Into

ABSTRACT Microflora can be found in both caries-free and periodontitis-free people and caries-affected and periodontitis-affected people, and many clinical studies reveal that the portion of certain bacterial species such as Streptococcus mutans or Porphyromonas gingivalis, respectively, is increased in patients with caries or periodontitis. Therefore, it seems that the competition that results between beneficial bacteria and virulent bacteria leads to either a healthy or sick status of human beings. Competition between members of the dental microflora and there role in pocket recolonization is very complex and many antagonistic characteristics can be observed from competition for initial attachment on tooth surfaces or for later attachment to pioneer bacteria, competition from bacteriocins or hydrogen peroxide secreted and from facilitating the growth of some species which inhibit other species. To date only some of the details of these mechanisms are known. The present review will provide an overview on the prevalence of beneficial bacteria and the major mechanisms of oral bacterial interactions. Due to the large number of oral bacterial species, only the best characterized species are included in this review.

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