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Updated: Feb 14, 2026

Preparation of High-Quality Fermented Fish Product
Published on: August 23, 2019
Sequential processing with fermentative Caldicellulosiruptor kronotskyensis and chemolithoautotrophic Cupriavidus
Xiaowei Peng1, Robert M Kelly2, Yejun Han1
1National Key Laboratory of Biochemical, Engineering Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.
Abstract:
Unpretreated rice straw was fermented by the extremely thermophilic bacterium Caldicellulosiruptor kronotskyensis, generating solubilized carbohydrates, organic acids, lignin-derived aromatics, H2 , and CO2 , which were subsequently used to produce polyhydroxybutyrate (PHB) by the chemolithoautotrophic bacterium Cupriavidus necator. The fermented liquid significantly enhanced the growth of C. necator, leading to a five-fold cell biomass yield, and a nine-fold PHB yield compared to what was obtained from conventional mineral media. This integrated process utilized all products of lignocellulose fermentation without H (electron) loss and carbon emission, while concomitantly enhancing CO2 fixation by C. necator for PHB production. The sequential coupling of C. kronotskyensis and C. necator provides not only a new biorefinery paradigm characterized by reduced pretreatment and saccharification requirements but also an efficient way for enhancing CO2 fixation.
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