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Optimization of fermentation conditions for the production of recombinant feruloyl esterase from Burkholderia pyrrocinia B1213

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Abstract

Statistical experimental designs were used to optimize conditions for recombinant Burkholderia pyrrocinia feruloyl esterase (BpFae) production in bacteria under lactose induction. After optimization by single factor design, Plackett–Burman design, steepest ascent design and the response surface method, the optimal conditions for BpFae production were: 6 g/L lactose, pH 5.5, pre-induced period 5 h, 23 °C, shaker rotational speed of 240 rpm, medium volume of 50 mL/250 mL, inoculum size 0.2% (v/v), and a post-induced period of 32 h in a Luria–Bertani culture. The produced BpFae activity was 7.43 U/mL, which is 2.92 times higher than that obtained under optimal conditions using IPTG as the inducer. BpFae activity was 4.82 U/mL in a 5 L fermenter under the abovementioned optimal conditions. BpFae produced a small amount of ethyl acetate but had no effect on the synthesis of other important esters in Baijiu. The results underpin further investigations into BpFae characterization and potential applications.

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Acknowledgements

We thank Andrew Dingley and Emma Barratt for insightful discussions and providing language help. This research was supported by the National Natural Science Foundation of China (nos. 31701592, 31830069, and 31671798), General Project of Scientific Research Program of Beijing Municipal Education Commission (Grant number KM201910011006/PXM2019_014213_000007) and Quality Construction of Talents Training/First-class Speciality Construction/Food Science and Engineering (PXM2019_014213_000010).

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Correspondence to Xiuting Li.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Fan, G., Zhu, Y., Fu, Z. et al. Optimization of fermentation conditions for the production of recombinant feruloyl esterase from Burkholderia pyrrocinia B1213. 3 Biotech 10, 216 (2020). https://doi.org/10.1007/s13205-020-02198-1

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  • DOI: https://doi.org/10.1007/s13205-020-02198-1

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