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Soy whey and brewer's spent grain hydrolysates wholly replace conventional medium for microalgae growth: Process performance and economic considerations.
Zhi Alcine Chan, Mei; Jing Han Hau, Vivian; Perez, Byron; Haberkorn, Iris; Mathys, Alexander; Liu, Shao-Quan.
Afiliación
  • Zhi Alcine Chan M; Department of Food Science & Technology, National University of Singapore, Science Drive 2, Singapore 117542, Singapore.
  • Jing Han Hau V; Department of Food Science & Technology, National University of Singapore, Science Drive 2, Singapore 117542, Singapore.
  • Perez B; ETH Singapore SEC Ltd, CREATE Tower #06-01, 1 Create Way, Singapore 138602, Singapore; ETH Zürich, Department of Health Science and Technology, Sustainable Food Processing Laboratory, Schmelzbergstrasse 9, 8092 Zürich, Switzerland.
  • Haberkorn I; ETH Singapore SEC Ltd, CREATE Tower #06-01, 1 Create Way, Singapore 138602, Singapore.
  • Mathys A; ETH Singapore SEC Ltd, CREATE Tower #06-01, 1 Create Way, Singapore 138602, Singapore; ETH Zürich, Department of Health Science and Technology, Sustainable Food Processing Laboratory, Schmelzbergstrasse 9, 8092 Zürich, Switzerland.
  • Liu SQ; Department of Food Science & Technology, National University of Singapore, Science Drive 2, Singapore 117542, Singapore; National University of Singapore (Suzhou) Research Institute, No. 377 Linquan Street, Suzhou Industrial Park, Suzhou 215123, Jiangsu, China. Electronic address: fstlsq@nus.edu
Bioresour Technol ; : 131460, 2024 Sep 08.
Article en En | MEDLINE | ID: mdl-39255947
ABSTRACT
To enhance circularity in heterotrophic microalgal bioprocesses, this study completely substituted glucose and Bold's basal medium (BBM) with brewer's spent grain (BSG) and soy whey (SW) hydrolysates. Mild acid hydrolysis conditions of BSG (0.2 M H2SO4, 130 °C, 36 min) and SW (0.1 M HCl, 95 °C, 30 min) were optimised for glucose release, and their hydrolysates were optimally mixed (15 % SW-85 % BSG) to obtain a medium that best supported Auxenochlorella protothecoides growth. Maximum biomass production (Xmax) and productivity (PXmax) obtained in the hydrolysate medium containing 50.75 g/L endogenous glucose (Xmax 22.17 g/L; PXmax 7.06 g/L/day) were comparable to that in BBM containing 50.44 g/L exogenous glucose (Xmax 20.02 g/L; PXmax 6.34 g/L/day). Moreover, estimated hydrolysate medium production costs were within an order of magnitude to BBM. Overall, the integrated approach of tailored hydrolytic treatments and complementary side-streams is potentially technically and economically feasible, with applications extending beyond A. protothecoides.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Singapur Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Bioresour Technol Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Singapur Pais de publicación: Reino Unido