Herold Sebastian, Krämer Dominik, Violet Norman, King Rudibert
Chair of Measurement and Control Technische Universität Berlin Berlin Germany.
Department Experimental Toxicology and ZEBET Federal Institute for Risk Assessment Berlin Germany.
Eng Life Sci. 2017 Feb 8;17(11):1202-1214. doi: 10.1002/elsc.201600020. eCollection 2017 Nov.
Although known to be very powerful, the widespread application of model-based techniques is still significantly hampered in the area of bio-processes. Reasons for this situation can be found along the whole chain to set up and implement such approaches. In a time-consuming step, models are typically hand-crafted. Whether alternatives of better models exist to actually fulfill the final goals is undocumented, most often even unknown. In a next step, model-based process control methods are hand-coded in an error-prone procedure. For many of these methods given in the literature, only simulation studies are shown, leaving the interested reader with the unanswered question whether the implementation of a specific method in a real process is viable. As the potentially time-consuming implementation of such a method presents a risk for a rapid process development, promising candidates may be overlooked. To remediate this unsatisfactory situation, a combination of theoretical methods and information technology is proposed here. By an exemplarily realized software tool, it is shown how such an environment helps to promote model-based optimization, supervision, and control of bio-processes and allows for an inexpensive test of new ideas as well in real-life experiments. The contribution concentrates on an overview of a possible software architecture with respect to necessary methods and a meaningful information strategy, highlighting some of the more crucial building blocks. Experimental results exploiting parts of the proposed methods are given for a yeast strain synthesizing a product of industrial interest.
尽管基于模型的技术被认为非常强大,但在生物过程领域,其广泛应用仍受到显著阻碍。这种情况的原因可以在建立和实施此类方法的整个链条中找到。在一个耗时的步骤中,模型通常是手工构建的。是否存在能真正实现最终目标的更好模型的替代方案并未记录在案,大多数情况下甚至无人知晓。在下一步中,基于模型的过程控制方法通过容易出错的过程进行手工编码。对于文献中给出的许多此类方法,仅展示了模拟研究,这让感兴趣的读者留下了一个未解决的问题,即特定方法在实际过程中的实施是否可行。由于此类方法的潜在耗时实施对快速的过程开发构成风险,有前景的候选方法可能会被忽视。为了纠正这种不尽人意的情况,本文提出了理论方法与信息技术的结合。通过一个示例性实现的软件工具,展示了这样一个环境如何有助于促进基于模型的生物过程优化、监控和控制,并允许在实际实验中对新想法进行低成本测试。本文的贡献集中在关于必要方法和有意义的信息策略的可能软件架构概述上,突出了一些更关键的构建模块。针对一种合成具有工业价值产品的酵母菌株,给出了利用部分所提出方法的实验结果。