Improving the simultaneous production of laccase and lignin peroxidase from Streptomyces lavendulae by medium optimization

Jing, Debing

doi:10.1016/j.biortech.2010.04.087

Cited by 44 publications

(35 citation statements)

References 30 publications

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“…The high demand for laccase, coupled with a long fermentation period and low laccase yield in its production, can limit its use in industrial applications, and highlights the importance of improving laccase production [4,5]. A few strategies have been reported to improve the production of laccase, including the isolation and breeding of high producing strains, optimization of the medium, heterologous expression of laccase genes, and the utilization of inducers [5][6][7]. However, the enzyme yields obtained by these methods are relatively low relative to the high demand for laccase.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound-intensified laccase production from Trametes versicolor

Wang

Chen

et al. 2013

Ultrasonics Sonochemistry

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a b s t r a c tAn efficient intermittent ultrasonic treatment strategy was developed to improve laccase production from Trametes versicolor mycelia cultures. The optimized strategy consisted of exposing 2-day-old mycelia cultures to 5-min ultrasonic treatments for two times with a 12-h interval at the fixed ultrasonic power and frequency (120 W, 40 kHz). After 5 days of culture, this strategy produced the highest extracellular laccase activity of 588.9 U/L among all treatments tested which was 1.8-fold greater than the control without ultrasound treatment. The ultrasonic treatment resulted in a higher pellet porosity that facilitated the mass transfer of nutrients and metabolites from the pellets to the surrounding liquid. Furthermore, the ultrasonic treatment induced the expression of the laccase gene (lcc), which correlated with a sharp increase in both extracellular and intracellular laccase activity. This is the first study to find positive effects of ultrasound on gene expression in fungal cells. These results provide a basis for understanding the stimulation of metabolite production and process intensification by ultrasonic treatment in filamentous fungal culture.

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Section: Introductionmentioning

confidence: 99%

Ultrasound-intensified laccase production from Trametes versicolor

Wang

Chen

et al. 2013

Ultrasonics Sonochemistry

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“…Factors that affect the growth of the microorganism in culture, such as temperature and initial pH of incubation, oxygenation rate, and medium components also have influential effects on peroxidase production [18,19]. The results showed that the bacterium S. griseosporeus strain SN9 was able to release a maximum peroxidase production yield of 0.172 U/ml at an initial alkaline medium pH (pH 8) after 5 days (Fig.…”

Section: Optimization Of the Production Conditionsmentioning

confidence: 85%

Characterization of a purified decolorizing detergent-stable peroxidase from Streptomyces griseosporeus SN9

Rekik

Nadia

Bejar

et al. 2015

International Journal of Biological Macromolecules

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“…), and obligate anaerobic species (such as Clostridium sp.) have been identified as the dominant species (Brück et al, 2010;Jing, 2010;Jing and Wang, 2012). Although the difference in microbial community composition can be observed in electrophoretic profiles obtained by DGGE (Kent and Triplett, 2002), no definite correlation was found between the diversity of bacterial communities (Supplementary Data 3-a-e) and the comprehensive G average (Supplementary Data 4-a-d).…”

Section: Detection Of Sedimentary Bacteriamentioning

confidence: 89%