量子电子学报 ›› 2021, Vol. 38 ›› Issue (5): 684-690.doi: 10.3969/j.issn.1007-5461.2021.05.013

• “激光光谱新技术与应用”专辑 • 上一篇    下一篇

激光吸收光谱技术在大肠杆菌生长测量中的应用

卢俊城1,2, 杨朝凤1, 管祖光3, 陈达如3, 邵 杰1,2∗   

  1. 1 浙江师范大学信息光学研究所, 浙江 金华 321004; 2 瑞谱医疗设备(东莞)有限公司, 广东 东莞 523808; 3 浙江师范大学杭州高等研究院, 浙江 杭州 311200
  • 收稿日期:2020-12-22 修回日期:2021-03-07 出版日期:2021-09-28 发布日期:2021-09-28
  • 通讯作者: E-mail: shaojie@zjnu.cn E-mail:shaojie@zjnu.cn
  • 作者简介:卢俊城 ( 1995 - ), 广东韶关人, 研究生, 主要从事 TDLAS 技术及应用方面的研究。 E-mail: lujuncheng@zjnu.edu.cn
  • 基金资助:
    Supported by National Natural Science Foundation of China (国家自然科学基金, 61775197), Dongguan Introduction Program of Leading Innovative and Entrepreneurial Talents (东莞市引进创新创业领军人才计划资助, 202023608)

Application of laser absorption spectroscopy in Escherichia coli growth measurement

LU Juncheng1,2, YANG Chaofeng1, GUAN Zuguang3, CHEN Daru3, SHAO Jie1,2∗   

  1. 1 Institute of Information Optics, Zhejiang Normal University, Jinhua 321004, China; 2 Ruipu Medical Equipment (Dongguan) Co., Ltd., Dongguan 523808, China; 3 Hangzhou Institute of Advanced Studies, Zhejiang Normal University, Hangzhou 311200, China
  • Received:2020-12-22 Revised:2021-03-07 Published:2021-09-28 Online:2021-09-28

摘要: 将高灵敏的激光吸收光谱技术应用于微生物生长测量领域, 实现了对以大肠杆菌为例的微生物生长过 程实时监测和生长曲线的绘制。设计并搭建了一套实验测量装置, 对大肠杆菌生长过程中新陈代谢产生的 CO2 的二次谐波信号进行实时监测并拟合, 测量获取了大肠杆菌在 25、 26、 29、 32、 34、 37、 43 ◦C 培养条件下的 生长曲线。实验结果表明测得的生长曲线能够准确反映大肠杆菌在不同温度下生长调整期、对数期、稳定期 及衰亡期的时间, 证明了基于激光吸收光谱技术的微生物生长代谢产物 CO2 法可以很好地应用于微生物生长测 量领域。

关键词: 光谱学, 微生物生长测量, 激光吸收光谱, 生长曲线, Gompertz 模型

Abstract: The highly sensitive laser absorption spectroscopy technology is applied to the field of microbial growth measurement to realize the real-time monitoring of the microbial growth process and the drawing of growth curves taking Escherichia coli as an example. A set of experimental measurement equipment is designed and built to monitor and fit the second harmonic signal of carbon dioxide (CO2) generated by metabolism of Escherichia coli in real time. The growth curves of E. coli are measured at 25, 26, 29, 32, 34, 37 and 43 ◦C. The experimental results show that the measured growth curve can accurately reflect the adjustment period, logarithmic phase, stable period and decay period of E. coli growth at different temperatures, which proves that the microbial growth metabolite (CO2) method based on laser absorption spectroscopy technology can be well applied to the field of microbial growth measurement.

Key words: spectroscopy, microbiological growth measurement, laser absorption spectroscopy, growth curve, Gompertz model

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