Characterization and Metal Detoxification Potential of Moderately Thermophilic Bacillus cereus from Geothermal Springs of Himalaya

Ghalib, Aslam Khan; Yasin, Muhammad; Faisal, Muhammad

doi:10.1590/s1516-8913201402001

Cited by 10 publications

(3 citation statements)

References 24 publications

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“…Microbial biodiversity has also been investigated in several thermal springs in Italy [41][42][43][44][45], France [46], Iceland [47,48], Hungary [49], Czech Republic [50], Croatia [51], Turkey [52], Armenia [53], and Russia [54,55]. In the eastern countries, other geothermal aquifers have been studied: Trans-Himalayan plateau [56], Pakistan [57,58], Tibet [59], China [60], India [61], Thailand [62], and Japan [63,64]. In the Latin-American countries, the most studied are Copahue in Argentina [65] and other thermal springs in Mexico, Perú, Colombia, and the Caribbean Island of Montserrat [66][67][68][69], and also, on the African continent, in Tunisia [70] and South Africa [71].…”

Section: Thermal Spring Waters Microbiomementioning

confidence: 99%

Hydrobiome of Thermal Waters: Potential Use in Dermocosmetics

2023

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Over the course of the last 20 years, numerous studies have identified the benefits of thermal waters on different skin conditions. Consequently, several investigations have been carried out on their effects on the skin, which are linked to their chemical composition, and, recently, scientists have turned their attention to the role of the thermal spring’s microbiota, named “hydrobiome”, regarding these therapeutic effects. At the same time, the development of cosmetics based on pre, pro, and postbiotics has reached great relevance and research is increasing every day. This review gathers information on the biological diversity of thermal spring waters and their potential use in obtaining biological compounds, metabolites, or bacterial extracts for use in dermocosmetics as active ingredients. These bioactive compounds are able to improve dermatological diseases such as atopic dermatitis or rosacea and ameliorate pruritus and xerosis; moreover, they can increase protection against UV exposure, strengthen barrier function, maintain good homeostasis of skin defenses, repair damaged skin, promote wound healing, improve skin condition, reduce uneven skin pigmentation, and prevent skin aging. From a future perspective, fruitful cooperation among researchers, hydrologists, thermal spa centers, and cosmetic industries will drive this sector toward a better understanding of the role of the hydrobiome of thermal spring waters on healthy skin and dermatological diseases and consider the inclusion of derivatives of this hydrobiome (in the form of fermenters, lysates, extracts, etc.) in dermocosmetic formulations. Therefore, and being aware of the potential of the hydrobiome in dermatological and skin care applications, the future prospects for the use of bioactive substances derived from it in dermocosmetic formulations are promising.

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Section: Thermal Spring Waters Microbiomementioning

confidence: 99%

Hydrobiome of Thermal Waters: Potential Use in Dermocosmetics

2023

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“…Bacillus sp was found to be the dominant bacteria that could survive with temperature above 45 o C [11]. However, the strain of Bacillus cereus was found to be the moderately thermophilic bacteria and has the potential in detoxification of several types of metal at 45 o C [12]. Increasing temperature to 45 o C had the positive affect on the enzyme activity [13].…”

Section: Mercury Reduction From Soilmentioning

confidence: 99%

Application of Mercury Resistant Bacteria Isolated From Artisanal Small-Scale Gold Tailings in Biotransformation of Mercury (Ii) - Contaminated Soil

Kardena¹

2020

GEOMATE

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This research aims to study the detoxification of Hg by a consortium of bacteria throughout bioremediation technology. The consortium of bacteria was identified to be the strain of Bacillus cereus TL-01, Bacillus Sp TL-02 and Brevundimonas diminuta TL-03 by 16s rRNA sequencing. The result presented the potential of growth in the used medium and bacteria grew faster orderly in no/less to high Hg concentration. Bacteria started its log phase after 4 and 20 hours inoculation in pure culture and 50 ppm Hg while the growth prolonged its lag phase to 52 hours in 100 ppm Hg. Experimental treatments were done using synthetic soil under an anaerobic condition with 60 days of observation. For a microcosm of soil treatment, the highest removal of mercury under influence of temperature was 73 % at 45 o C while the highest removal under influence of pH was 69% at pH of 4-5 and the highest removal under nutrient amendment was at CNP of 100:10:1 with an efficiency of 75%. There was 0.02% of Hg 0 found to be adsorbed onto the activated carbon analyzed by SEM-EDS. The oxidation-reduction potential (ORP) was measured in the range of -60 mv to 80 mv ranging in reduced soil considered into anaerobic condition. To sum up, the isolated bacteria represents to potential in detoxifying Hg while Hg removal was better with the anaerobic condition. A high concentration of Hg did not inhibit the growth of isolated bacteria but it just prolonged the adaptation stage of bacteria.

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“…A significant proportion of publications on the identification of Bacillus spp. from hot springs rely on only one tool of identification, a comparison of 16S rRNA gene sequence to a public database, that is, BLAST (Ghalib et al, 2014;Obeidat et al, 2012) which has it shortcomings as previously mentioned. However, this study will show that other means of genotyping, such as phylogenetic analysis, can disprove conclusions that are based only on the BLAST tool.…”

Section: Phylogenetic Analysismentioning

confidence: 99%