Simulation of bioreactor flow environments for large-scale animal cell culture conditions relevant to cultivated meat production

IF 3.7 3区 生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Kira Kiviat , David E. Block , Harishankar Manikantan
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引用次数: 0

Abstract

Cultivated meat has the potential to mitigate many detrimental effects of conventional meat production on land use and greenhouse gas emissions. However, to meet an increasing demand for sustainable protein sources and to achieve cost parity with conventionally grown meat, animal cells will likely be required to be produced in bioreactors at an order of magnitude larger scale than has been done so far. To help de-risk this scale up, simulations of plausible bioreactor configurations were performed at a series of scales ranging from 200 L to 200,000 L using computational fluid dynamics. Several different bubble drag models were compared, and the one that predicted the lowest mass transfer and highest shear was used in order to be conservative about the predicted cell environment. The distributions of shear stress, oxygen mass transfer coefficient, and Kolmogorov length scale were compared across the bioreactor scales, showing only minor changes with increasing scale. The case of a Rushton and pitched impeller was compared to a case with two Rushton impellers, and the latter was found to have higher mass transfer and only slightly higher shear for a given power input. This study provides a step towards predicting animal cell culture performance at the scales needed for sustainable cultivated meat production.
与养殖肉类生产相关的大规模动物细胞培养条件的生物反应器流动环境模拟
养殖肉类有可能减轻传统肉类生产对土地利用和温室气体排放的许多有害影响。然而,为了满足对可持续蛋白质来源的不断增长的需求,并实现与传统方式种植的肉类同等的成本,动物细胞可能需要在生物反应器中以比目前更大的规模生产。为了帮助降低这种规模扩大的风险,使用计算流体动力学在200 L到200,000 L的一系列规模下进行了合理的生物反应器配置模拟。对几种不同的气泡阻力模型进行了比较,为了对预测的细胞环境保持保守,采用了预测传质最小和剪切最大的气泡阻力模型。剪切应力、氧传质系数和Kolmogorov长度尺度在不同生物反应器尺度上的分布比较表明,随着规模的增加,剪切应力、氧传质系数和Kolmogorov长度尺度的变化不大。一个拉什顿和倾斜叶轮的情况下,与两个拉什顿叶轮的情况进行了比较,后者被发现有更高的传质,只有略高的剪切为一个给定的功率输入。这项研究为预测可持续养殖肉类生产所需规模的动物细胞培养性能提供了一步。
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
Biochemical Engineering Journal
Biochemical Engineering Journal 工程技术-工程:化工
CiteScore
7.10
自引率
5.10%
发文量
380
审稿时长
34 days
期刊介绍: The Biochemical Engineering Journal aims to promote progress in the crucial chemical engineering aspects of the development of biological processes associated with everything from raw materials preparation to product recovery relevant to industries as diverse as medical/healthcare, industrial biotechnology, and environmental biotechnology. The Journal welcomes full length original research papers, short communications, and review papers* in the following research fields: Biocatalysis (enzyme or microbial) and biotransformations, including immobilized biocatalyst preparation and kinetics Biosensors and Biodevices including biofabrication and novel fuel cell development Bioseparations including scale-up and protein refolding/renaturation Environmental Bioengineering including bioconversion, bioremediation, and microbial fuel cells Bioreactor Systems including characterization, optimization and scale-up Bioresources and Biorefinery Engineering including biomass conversion, biofuels, bioenergy, and optimization Industrial Biotechnology including specialty chemicals, platform chemicals and neutraceuticals Biomaterials and Tissue Engineering including bioartificial organs, cell encapsulation, and controlled release Cell Culture Engineering (plant, animal or insect cells) including viral vectors, monoclonal antibodies, recombinant proteins, vaccines, and secondary metabolites Cell Therapies and Stem Cells including pluripotent, mesenchymal and hematopoietic stem cells; immunotherapies; tissue-specific differentiation; and cryopreservation Metabolic Engineering, Systems and Synthetic Biology including OMICS, bioinformatics, in silico biology, and metabolic flux analysis Protein Engineering including enzyme engineering and directed evolution.
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