The Contribution Ratio of Autotrophic and Heterotrophic Metabolism during a Mixotrophic Culture of Chlorella sorokiniana

Jeong-Eun Park, Shan Zhang, Thi Hiep Han and Sun-Jin Hwang
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Jeong-Eun Park: Department of Environmental Science and Engineering, Kyung Hee University, Seochon-dong, Giheung-gu, Yongin-si 17104, Gyeonggi-do, Korea
Shan Zhang: Jining Municipal Eco-Environmental Monitoring Center, Jining 272000, Shandong, China
Thi Hiep Han: School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea
Sun-Jin Hwang: Department of Environmental Science and Engineering, Kyung Hee University, Seochon-dong, Giheung-gu, Yongin-si 17104, Gyeonggi-do, Korea

IJERPH, 2021, vol. 18, issue 3, 1-8

Abstract: The contribution ratio of autotrophic and heterotrophic metabolism in the mixotrophic culture of Chlorella sorokiniana ( C. sorokiniana ) was investigated. At the early stage of mixotrophic growth (day 0–1), autotrophy contributed over 70% of the total metabolism; however, heterotrophy contributed more than autotrophy after day 1 due to the rapid increase in cell density, which had a shading effect in the photo-bioreactor. Heterotrophy continued to have a higher contribution until the available organic carbon was depleted at which point autotrophy became dominant again. Overall, the increase in algal biomass and light conditions in the photo-bioreactor are important factors in determining the contribution of autotrophy and heterotrophy during a mixotrophic culture.

Keywords: autotrophic metabolism; Chlorella sorokiniana; heterotrophic metabolism; mixotrophic metabolism; wastewater treatment (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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