A mathematical model of intracellular behavior of microalgae for predicting growth and intracellular components syntheses under nutrient-replete and -deplete conditions
| Autor: | Yong Keun Chang, Kyung Hwan Ryu, Boeun Kim, Min Gyu Sung, Jay H. Lee, Seongmin Heo |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Chemistry Cell growth Carbohydrates Biomass Bioengineering Metabolism Renewable fuels Models Theoretical Lipid Metabolism Applied Microbiology and Biotechnology Lipids Models Biological Carbon Cell death rate 03 medical and health sciences 030104 developmental biology Nutrient Economic viability Microalgae Carbohydrate Metabolism Biochemical engineering Intracellular Biotechnology |
| Zdroj: | Biotechnology and bioengineering. 115(10) |
| ISSN: | 1097-0290 |
| Popis: | Microalgae is a promising biomass source for renewable fuels and chemicals production. To describe microalgal behavior and improve their cultivation, various kinetic models have been proposed. However, previous works have focused on biomass formation and lipids production only, even though carbohydrates and proteins are also important products, not only for understanding the metabolic behavior of microalgae but also for enhancing the economic viability through value-added side products. In this study, a new mathematical model is proposed to explain core biological mechanisms of growth and macromolecules syntheses based on the central metabolism of carbon and nitrogen. In the model, microalgal growth is separated as hyperplasia and hypertrophy, to describe the cell growth more precisely under nutrient-replete and -deplete conditions. Sensitivity analysis performed using the model indicates that cell state (e.g., cell death rate) has a strong effect on the lipid production explaining the difficulty of reproducing a microalgae culture experiment. |
| Databáze: | OpenAIRE |
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