Enhancement of phycocyanin and carbohydrate production from Spirulina platensis growing on tofu wastewater by employing mixotrophic cultivation condition

The high carbohydrate content of readily commercialized microalgae, Spirulina platensis, has gained more attention since it could be utilized as a source of bioethanol. However, the high cost of cultivation needs to be pressed to lower the bioethanol price. The purpose of this study was to study the...

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Published inBiocatalysis and agricultural biotechnology Vol. 47; p. 102600
Main Authors Nur, Muhamad Maulana Azimatun, Rahmawati, Shelina Dewi, Sari, Indri Wulan, Achmad, Zubaidi, Setyoningrum, Tutik Muji, Jaya, Danang, Murni, Sri Wahyu, Djarot, Ira Nurhayati
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.01.2023
Subjects
C-phycocyanin
Carbohydrate production
Mixotrophic
Spirulina platensis
Tofu wastewater
C-phycocyanin
Mixotrophic
Spirulina platensis
Tofu wastewater
Carbohydrate production
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Summary:The high carbohydrate content of readily commercialized microalgae, Spirulina platensis, has gained more attention since it could be utilized as a source of bioethanol. However, the high cost of cultivation needs to be pressed to lower the bioethanol price. The purpose of this study was to study the potency of Spirulina platensis growing in tofu wastewater (TWW) as C-phycocyanin (C-PC) and carbohydrate feedstock under mixotrophic conditions. S. platensis was cultivated on different TWW fractions and different organic carbon sources. Box-behnken response surface methodology was employed to optimize organic carbon concentration, UV-C irradiation, and FeEDTA addition. Results showed that glucose addition on 15% TWW accelerates carbohydrate and C-PC productivity. Box-behnken RSM revealed that 0.67 g/L glucose, 5 min UV-C irradiation time, and 10 mg/L FeEDTA resulted in high carbohydrate (49.94 mg/L/d) and C-PC (26.93 mg/L/d) productivity. Interaction of glucose and UV-C irradiation significantly enhances carbohydrate and C-PC productivity. •Spirulina platensis could grow on 15% TWW and Zarrouk medium.•External glucose addition resulted better carbohydrate and C-PC productivity compared to fructose and crude glycerol.•Interaction of glucose and UV-C irradiation resulted high carbohydrate and C-PC productivity.
ISSN:1878-8181
1878-8181
DOI:10.1016/j.bcab.2023.102600