ArticleMicrobial cell factories2019
Large-scale production of tauroursodeoxycholic acid products through fermentation optimization of engineered Escherichia coli cell factory.
Article in Microbial cell factories, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
9 citing papers in PubMed, 22 citations in OpenAlex.
- Biosynthesis of tauro-ursodeoxycholic acid (TUDCA) in Saccharomyces cerevisiae.Microbial cell factories · 2025Article
- High-level production of Tauroursodeoxycholic acid from Taurochenodeoxycholic acid in engineered Bacillus subtilis via whole-cell biotransformation.World journal of microbiology & biotechnology · 2025Article
- Cost-effective whole-cell biosynthesis of ursodeoxycholic acid using engineeredFrontiers in microbiology · 2025Article
- Synthesis of TUDCA from chicken bile: immobilized dual-enzymatic system for producing artificial bear bile substitute.Microbial cell factories · 2024Review
- Metabolic engineering and optimization of Escherichia coli co-culture for the de novo synthesis of genkwanin.Journal of industrial microbiology & biotechnology · 2023Article
- Biological synthesis of ursodeoxycholic acid.Frontiers in microbiology · 2023Review
- Tailoring and optimizing fatty acid production by oleaginous yeasts through the systematic exploration of their physiological fitness.Microbial cell factories · 2022Article
- A green strategy to produce potential substitute resource for bear bile using engineered Saccharomyces cerevisiae.Bioresources and bioprocessing · 2022Article
- Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
backgroundBear bile powder is a valuable medicinal material characterized by high content of tauroursodeoxycholic acid (TUDCA) at a certain ratio to taurochenodeoxycholic acid (TCDCA). We had created an engineered E. coli harboring two-step bidirectional oxidative and reductive enzyme-catalyzing pathway that could rapidly convert TCDCA to TUDCA at a specific percentage in shake flasks.
resultsWe reported here the large-scale production of TUDCA containing products by balancing the bidirectional reactions through optimizing fermentation process of the engineered E. coli in fermenters. The fermentation medium was firstly optimized based on M9 medium using response surface methodology, leading to a glycerol and yeast extract modified M9-GY medium benefits for both cell growth and product conversion efficiency. Then isopropylthio-β-galactoside induction and fed-stock stage was successively optimized. Finally, a special deep-tank static process was developed to promote the conversion from TCDCA to TUDCA. Applying the optimal condition, fermentation was performed by separately supplementing 30 g refined chicken bile powder and 35 g crude chicken bile powder as substrates, resulting in 29.35 ± 2.83 g and 30.78 ± 3.04 g powder products containing 35.85 ± 3.85% and 27.14 ± 4.23% of TUDCA at a ratio of 1.49 ± 0.14 and 1.55 ± 0.19 to TCDCA, respectively, after purification and evaporation of the fermentation broth. The recovery yield was 92.84 ± 4.21% and 91.83 ± 2.56%, respectively.
conclusionThis study provided a practical and environment friendly industrialized process for producing artificial substitute of bear bile powder from cheap and readily available chicken bile powder using engineered E. coli microbial cell factory. It also put forward an interesting deep-tank static process to promote the enzyme-catalyzing reactions toward target compounds in synthetic biology-based fermentation.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.