scholarly journals Biodegradation of textile dyes by bacteria isolated from textile industry effluents

2020 ◽  
Vol 9 (1) ◽  
pp. 5-8
Author(s):  
Khusbu Akter ◽  
Tamanna Zerin ◽  
Avijit Banik

A country like Bangladesh where textile industries are the main source of developing economy, pollution problem from such industries creates a huge risk for the environment. Textile industries discharge a huge amount of effluent containing various harmful chemicals including synthetic dyes that are very stable and threat to the living organisms. This study deals with the potential decolorization and biodegradation of Bemacron Yellow HP-2R (BY), Bemacron Red RS (BR) and Bemacron blue RS 01 (BB) dyes using bacteria isolated from textile effluent. The effluent and soil samples were collected from different locations of discharge point. Only two isolates were screened out after primary screening using dye supplemented nutrient agar media. Following colony morphology, physiology and biochemical analysis, they were presumptively identified as Bacillus sp. and Staphylococcus aureus. They were subjected to decolorization of 0.002 g/l BY, BR and BB dyes. Bacillus sp. showed superior decolorization potential of BR (71%) and BB (83%) dyes after 5 days of incubation. Whereas, Staphylococcus aureus showed 79% decolorization of BY dye after 5 days incubation. Decolorization efficacy can be further improved by optimizing environmental conditions and process parameters. Stamford Journal of Microbiology, Vol.9(1) 2019: 5-8

2020 ◽  
Vol 2 (3) ◽  
pp. 435
Author(s):  
Fitria Ayudi Ulfimaturahmah ◽  
Ratna Stia Dewi ◽  
Ajeng Arum Sari

Synthetic dyes are artificial dyes manufactured by Industry and commonly used for the textile industry. These dyes had potentially caused an environmental problem. Many types of dyes are recalcitrant and have toxic properties for living organisms. It can be removed by decolorization method, especially a biological decolorization by fungi. Fungi were chosen due to the ability to degrade toxic components. Aspergillus sp. is the fungi which commonly used for dye decolorization. It might be caused that Aspergillus sp. is one type of fungi lived in the textile waste and expected not to die in the dye decolorization treatment. The purpose of this research was to investigate the ability of the mycelia pellets of Aspergillus sp to decolorized Indigosol Blue dye and Remazol Brilliant Blue R (RBBR) dye. This research showed that mycelial pellets of Aspergillus sp. had high activity of decolorization of Indigosol Blue dye up to 85.37% and RBBR dye up to 80.21% and caused low pH value after 24 hour incubation time compared to the control solution.


2014 ◽  
Vol 10 (8) ◽  
pp. 3012-3021
Author(s):  
Mohamed Mihoubi ◽  
Wafa Mihoubi ◽  
Ali Gargouri ◽  
Raoudha Jarraya

The essential oils of flowers and remaining parts of the plant Senecio gallicus (Asteraceae), growing wild in Sfax (Tunisia), were obtained by hydrodistillation over a period of two years (2012 and 2013). Their analysis by Gas Chromatography-Mass Spectrometry (GC-MS), led to a total number of 36 components, belonging to different classes of chemical compounds. Oils compositions were characterized by the abundance of monoterpenes hydrocarbons, the major compounds present in flowers for the two years of study were  respectively the sabinene (49.45% and 28.86%), the α-pinene (9.67% and 9.1%), and the β-myrcene (9.88% and 10.97%). These compounds were also dominant in the essential oils of the plant without flowers where they represent (65.34% and 55%) for the sabinene, (4.14% and 7.3%) for α-pinene, and (6.86% and 0%) for β-myrcene. Obtained essential oils were tested for many biological activities and showed a moderate effect against the fungus Trichoderma reesei and bacteria such as Bacillus sp and Staphylococcus aureus. This study of the Senecio gallicus essential oils represents the first one in Tunisia.


2020 ◽  
pp. 1-3
Author(s):  
Hatim MY Hamadnalla ◽  
◽  
Mahdi Abdu-Almageed Mohamed Ali ◽  
Asaad Alsiddig Ahmed ◽  
◽  
...  

This work is an anti-Microbial and anti-Oxidant activity of Ziziphus spina Christi based on four selected bacteria: Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis and Staphylococcus aureus. These species were collected and prepared in Sudan. The concentrations were carried out and compared with standard control sample, the suspension of anti-microbial activities have shown different results in Fagonia cretica. The anti-oxidant activity is the ability of bioactive compounds to prevent, delay and protect against oxidant of virus substrates such as DNA and lipid materials, both in living organisms (e. g. human) and in food products. The result showed an anti-oxidant activity based on standard liquid reagent [1].


1922 ◽  
Vol 35 (5) ◽  
pp. 689-698 ◽  
Author(s):  
Frederick T. Lord ◽  
Robert N. Nye

Suspensions of living pneumococci in approximately isotonic standard solutions and in approximately isotonic bouillon with pH varying from about 4.0 to 8.0 after incubation show dissolution of organisms in those solutions having a pH higher than about 5.0. Dissolution is most marked at a critical range of about pH 5.0 to 7.0. Some dissolution also takes place toward the more alkaline end of the scale. No dissolution occurs at the most acid end of the scale. Dissolution in the standard solutions occurs at incubator, room, and ice box temperature. It is less marked at ice box temperature. Dissolution takes place in standard pH solutions with pneumococci allowed to grow and die out in glucose bouillon but unlike dissolution with living organisms is progressive from the acid toward the alkaline end of the scale. Pneumococci killed by heat for I hour undergo less dissolution than living organisms, the general character of the curve being similar to that with living organisms. Pneumococci killed by heat at 100°C. for 5 minutes do not undergo dissolution. The addition of fresh human serum to the suspensions of pneumococci at varying pH prevents dissolution. Dissolution of pneumococci takes place more rapidly at pH 6.1 in standard solutions in which large numbers of pneumococci have been previously dissolved than in fresh standard solutions at the same pH. The dissolution of pneumococci under the conditions of the experiments may be ascribed to an enzyme derived from the bacteria themselves. Other organisms such as Streptococcus viridans and hœmolyticus and Staphylococcus aureus do not undergo dissolution under conditions similar to those to which the pneumococcus was exposed.


2019 ◽  
Vol 6 (1) ◽  
pp. 90
Author(s):  
Riski Budi Yani ◽  
Anthoni Agustien ◽  
Feskaharny Alamsjah

The study used survey method and the data were analysed descriptively. The selection of the bacteria which produce antibiotic had been with paper disk method and used Escherichia coli and Staphylococcus aureus as the sample bacteria. This result showed pH 7,0 was succesful optimum pH antibiotic produced for Bacillus sp.1 and Bacillus sp.2. and 370C was the optimum temperature to antibiotic produced from Bacillus sp.1 and Bacillus sp.2.


2014 ◽  
Vol 2 (01) ◽  
pp. 82-85
Author(s):  
R. Kiruthiga ◽  
R. Rakkimuthu ◽  
K. M. Aravinthan

Crotalaria pallida Aiton. Fabaceae has been used for the treatment of various diseases like. The aim of the present study is to assess antibacterial activity of methanolic leaves extract of Crotalaria pallida Aiton. Escherichia coli and Klebsilla pneumonieae showed maximum susceptibility 19±1 and 18.66±0.57 at 25 mg/ml concentration respectively while Pseudomonas aeruginosa, Bacillus sp. and Staphylococcus aureus showed less susceptibility 11±1, 11.33±1.5 and 15±1 at 25 mg/ml concentration respectively. Overall results have proved that C. pallida leaves posses significant antibacterial activity.


2019 ◽  
Vol 12 (2) ◽  
pp. 84
Author(s):  
Liska Hamzah

This research aims to identify the compound group and determine the antibacterial activity of n-hexane, chloroform, and methanol fractions of Artocarpus integer (Thunb.) Merr stem bark. All fractions contain groups of terpenoid and steroid compounds. Antibacterial activity was detemined using agar diffusion method with MHA (Muller Hinton Agar) media on Escherichia coli (gram negative) and Staphylococcus aureus (gram positive). Ciprofloxacin was used as a positive control and methanol as a negative control. The three fractions were able to inhibit the growth of Escherichia coli and Staphylococcus aureus. The chloroform fraction showed the highest activity after 48 hours incubation with inhibition zones of 10.8 and 10.4 mm respectively.


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