scholarly journals Alkaline Protease Production Using Proteinaceous Tannery Solid Waste

Author(s):  
Javed Ahmad ◽  
Tauseef A Ansari
2009 ◽  
Vol 9 (1) ◽  
pp. 66-73 ◽  
Author(s):  
Arumugam Ganesh Kumar ◽  
R. Venkatesan ◽  
Burusa Prasad Rao ◽  
Somasundaram Swarnalatha ◽  
Ganesan Sekaran

2000 ◽  
Vol 27 (10) ◽  
pp. 793-805 ◽  
Author(s):  
Pınar Çalik ◽  
Güzide Çalik ◽  
Serpil Takaç ◽  
Tunçer H Özdamar

2021 ◽  
Author(s):  
Hajira Younas ◽  
Aisha Nazir ◽  
Zakia Latif ◽  
Janice E Thies ◽  
Muhammad Shafiq ◽  
...  

This study encompasses isolation and screening of heavy metal-resistant fungal and bacterial strains from tannery solid waste (TSW). Twelve fungal strains and twenty-five bacterial strains were isolated from TSW. The growth of fungal strains was observed against different heavy metals ranging from 10 mg L -1 to 1050 mg L -1 and the growth of bacteria was observed in metal concentrations ranging from 10 mg L -1 to 1200 mg L -1 . Five multi-metal resistant fungal isolates belonging to the genus Trichoderma and ten bacterial isolates belonging to the genus Bacillus showed good metal resistance and biosorption potential. They were identified through molecular techniques, fungi based on ITS region ribotyping, and bacteria based on 16S rRNA ribotyping. The fungal strains were characterized as T. hamatum (TSWF-06), T. harzianum (TSWF-11), T. lixii (TSWF-02) and T. pseudokoningii (TSWF-03, TSWF-10). The bacterial strains were characterized as Bacillus xiamenensis (TSW-02), B. velezensis (TSW-05), B. piscis (TSW-06), B. safensis (TSW-10), B. subtilis (TSW-14, TSW-15, TSW-17) B. licheniformis (TSW-19), B. cereus (TSW-20) and B. thuringiensis (TSW-22). The fungal strains namely, T. pseudokoningii (TSWF-03) and T. harzianum proved to be two multi-metal resistant strains with good biosorption efficiency. Unlike fungi, bacterial strains showed metal specific resistance. The strains Bacillus xiamenensis , B. subtilis (TSW-14) and B. subtilis (TSW-15) showed good biosorption efficiency against Cr, B. safensis against Cu, B. piscis and B. subtilis (TSW-17) against Pb and B. licheniformis and B. thuringiensis against Zn. The autochthonous fungal and bacterial strains can therefore be employed to clean metal contaminated environments.


Author(s):  
Gopalkumar G. Raol ◽  
Priyanka M. Patel ◽  
B.V. Raol ◽  
Rakeshkumar R. Panchal

2008 ◽  
Vol 19 (5) ◽  
pp. 739-748 ◽  
Author(s):  
A. Ganesh Kumar ◽  
R. Venkatesan ◽  
R. Kirubagaran ◽  
T. G. Prabhakar ◽  
G. Sekaran

2021 ◽  
Vol 16 (7) ◽  
pp. 84-91
Author(s):  
Maslinda Alias ◽  
Hakim Che Harun Mohammad ◽  
Ashraf Razali Nurul ◽  
Jasnizat Saidin ◽  
Nazaitulshila Rasit ◽  
...  

This research aims to produce thermostable alkaline protease from Bacillus subtilis isolated from La Hot Spring, Terengganu, Malaysia. The study was also conducted to determine the optimum conditions for protease production and stability by considering several parameters including pH, temperature and salt concentration. All seven bacteria were screened on skim milk agar overnight at 37 °C. Three strains with the highest proteolytic activity were identified in protease specific medium. The thermostable alkaline protease had an optimum temperature of 60 °C which achieved 85.73, 82.90 and 83.05 U/mL of protease activity for the three strains respectively. Furthermore, the strains exhibited significant activity of more than 90% from their original activity. Meanwhile, the optimum pH for protease production was pH 9 with the protease activity of 76.76, 79.71 and 88.39 U/mL for TB4, TB6 and TB9 strains, respectively. Proteases were found stable at pH 9 where the loss did not exceed 30% of its original activity. Collectively, all of the data emphasised that proteases from B. subtilis were alkaline thermostable proteases in accordance with a recent report. The finding highlights the viability of the proteases for biotechnological and industrial applications.


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