Process optimized for production of iturin A in biofilm reactor by Bacillus velezensis ND.

IF 3.5 3区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Bioprocess and Biosystems Engineering Pub Date : 2024-07-01 Epub Date: 2024-06-07 DOI:10.1007/s00449-024-03038-9

Zhongmin Tang, Leiming Wang, Zhengjun Xiong, Yuxia Zhu, Huili Zhang

引用次数: 0

Abstract

In this research, to provide an optimal growth medium for the production of iturin A, the concentrations of key amino acid precursors were optimized in shake flask cultures using the response surface method. The optimized medium were applied in a biofilm reactor for batch fermentation, resulting in enhanced production of iturin A. On this basis, a step-wise pH control strategy and a combined step-wise pH and temperature control strategy were introduced to further improve the production of iturin A. Finally, the fed-batch fermentation was performed based on combined step-wise pH and temperature control. The titer and productivity of iturin A reached 7.86 ± 0.23 g/L and 65.50 ± 1.92 mg/L/h, respectively, which were 37.65 and 65.20% higher than that before process optimization.

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在生物膜反应器中优化 Velezensis ND 杆菌生产 iturin A 的工艺。

在这项研究中，为了提供生产伊图灵 A 的最佳生长培养基，采用响应面法优化了摇瓶培养中关键氨基酸前体的浓度。在此基础上，引入了分步 pH 控制策略和分步 pH 与温度联合控制策略，进一步提高了伊图灵 A 的产量。伊图灵 A 的滴度和生产率分别达到了 7.86 ± 0.23 g/L 和 65.50 ± 1.92 mg/L/h，比工艺优化前分别提高了 37.65% 和 65.20%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bioprocess and Biosystems Engineering 工程技术-工程：化工

CiteScore

7.90

自引率

2.60%

发文量

147

审稿时长

2.6 months

期刊介绍： Bioprocess and Biosystems Engineering provides an international peer-reviewed forum to facilitate the discussion between engineering and biological science to find efficient solutions in the development and improvement of bioprocesses. The aim of the journal is to focus more attention on the multidisciplinary approaches for integrative bioprocess design. Of special interest are the rational manipulation of biosystems through metabolic engineering techniques to provide new biocatalysts as well as the model based design of bioprocesses (up-stream processing, bioreactor operation and downstream processing) that will lead to new and sustainable production processes. Contributions are targeted at new approaches for rational and evolutive design of cellular systems by taking into account the environment and constraints of technical production processes, integration of recombinant technology and process design, as well as new hybrid intersections such as bioinformatics and process systems engineering. Manuscripts concerning the design, simulation, experimental validation, control, and economic as well as ecological evaluation of novel processes using biosystems or parts thereof (e.g., enzymes, microorganisms, mammalian cells, plant cells, or tissue), their related products, or technical devices are also encouraged. The Editors will consider papers for publication based on novelty, their impact on biotechnological production and their contribution to the advancement of bioprocess and biosystems engineering science. Submission of papers dealing with routine aspects of bioprocess engineering (e.g., routine application of established methodologies, and description of established equipment) are discouraged.