Strain Development & Screening

Saccharomyces cerevisiae Strain Development and Screening Services

Customized programs combining classical mutagenesis and agar-based screening to generate improved S. cerevisiae strains.

Classical mutagenesis (UV/chemical) and agar-based specific screening
Shake flask confirmation and iterative rounds for trait enhancement
Optional metabolic engineering and fermentation process development

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Proven Strain Improvement Workflow

Classical strain development programs typically focus on increasing yield, tolerance, or product specificity through iterative mutagenesis and screening. Our service delivers stabilized, optimized S. cerevisiae strains for your specific application. Whether your goal is increased metabolite production, enhanced substrate tolerance, or novel pathway integration, we provide a project-scoped path from concept to deliverable.

Experienced team with a track record in classical strain development
One-stop support from mutagenesis to fermentation process scale-up
Customizable to your target trait (yield, tolerance, product specificity)

Host: Saccharomyces cerevisiae

Mutagenesis: UV / Chemical

Screening: Agar-based specific

Our Approach

Iterative Optimization

Multiple rounds of mutagenesis and screening progressively enrich desirable traits, with each cycle building on the previous best performer.

Scalable Process Integration

Confirmed strains are evaluated under fermentation conditions to assess scalability from shake flask to larger volumes.

Strain Stability & Characterization

Long-term genetic and phenotypic stability is assessed to provide a reliable production strain with documented performance data.

Deliverables

What You Receive

A comprehensive strain package with supporting documentation and quality controls, scoped to your project’s requirements.

Strain Materials

Stabilized, optimized S. cerevisiae strain (glycerol stock and agar slant)
Isogenic parental control strain (when included)
Fermentation performance data from shake flask validation
Genetic characterization report (as scoped)

Supporting Data & Quality Control

Mutagenesis and screening workflow documentation
Growth and production assay results
Genetic stability assessment over defined passages
Project report including methods, QC, and datasets with methods and outcome.

Service Scope

Customizable Project Parameters

Each project is defined after consultation to match your target trait and specific requirements.

Parameter	Typical project scope
Host Strain	S. cerevisiae wild-type, laboratory, or industrial strain provided or specified
Mutagenesis Method	UV irradiation, chemical mutagens, or directed approaches (project-dependent)
Screening Strategy	Agar-based specific screening; microtiter plate HTS when scoped
Shake Flask Validation	Yes – confirmed in shake flask cultures with growth and product assays
Metabolic Engineering	Available as add-on when targeted pathway modification is needed
Fermentation Process Development	Yes – can be coupled to evaluate scale-up performance
Number of Iteration Rounds	Determined by target trait; typically 2–5 rounds as scoped
QC Testing	Genetic stability (agarose gel, sequencing if scoped); phenotypic consistency

How It Works

Strain Development Workflow

A disciplined, iterative process from consultation to deliverable, tailored to your target trait.

Project Consultation & Target Definition

We discuss your desired trait (yield, tolerance, product specificity) and define mutagenesis and screening parameters tailored to your S. cerevisiae strain and project goals.

Mutagenesis & Library Generation

Random mutagenesis (UV or chemical) is applied to create a diverse mutant population. The number of mutagenesis rounds is determined by the desired improvement level.

High-Throughput Screening

Agar-based specific screening isolates mutants with improved performance. Candidates are selected based on growth, product formation, or tolerance indicators.

Shake Flask Confirmation & Iteration

Top performers are grown in shake flasks for quantitative validation. Superior strains enter additional mutagenesis/screening cycles as needed.

Strain Stabilization & Process Integration

The final strain is stabilized, cryopreserved, and tested under fermentation conditions. A full project report and QC data are delivered.

Applications

Industrial Enzyme & Metabolite Production

Evaluate yields of enzymes, organic acids, vitamins, or other value-added metabolites through targeted strain improvement.

Increased volumetric productivity
Improved substrate utilization
Reduced by-product formation

Biofuel & Chemical Production

Develop robust strains for ethanol, butanol, or advanced biofuels with enhanced tolerance to inhibitors and high sugar concentrations.

Higher ethanol or advanced biofuel titers
Tolerance to lignocellulosic hydrolysate inhibitors
Co-fermentation performance assessed per project scope

Tolerance & Robustness Improvement

Generate strains capable of withstanding harsh process conditions—low pH, high temperature, osmotic stress—for robust industrial performance.

Enhanced acid or heat tolerance
Improved osmotic resistance
Stable performance under scaled fermentation conditions

Frequently Asked Questions

The timeline depends on the number of mutagenesis rounds, screening depth, and required validation. After the initial consultation, we provide a detailed project schedule. Typical programs range from 10 to 16 weeks, but this is scoped per project and can be adjusted based on your priorities.
Yes. We can accept proprietary strains provided we have a material transfer agreement and appropriate confidentiality protections. All work is performed under conditions that respect your intellectual property.
The final strain undergoes genetic stability testing (verified by agarose gel and, if scoped, sequencing), growth curve consistency, and production phenotype confirmation in shake flasks. A detailed QC report accompanies the deliverable.
Metabolic engineering is not a standard component of every project but is offered as an optional add-on when targeted pathway modification or gene-level optimization is needed to achieve the desired trait improvement.

Scientific Literature

References

Wang G, Kell DB, Borodina I. Harnessing the yeast Saccharomyces cerevisiae for the production of fungal secondary metabolites. Essays in biochemistry. 2021;65(2):277-291. View on PubMed
Zhang S, Zhou J, Zhang G, et al. [Construction and optimization of p-coumaric acid-producing Saccharomyces cerevisiae]. Sheng wu gong cheng xue bao = Chinese journal of biotechnology. 2020;36(9):1838-1848. View on PubMed
Tian T, Wu D, Ng CT, et al. A multiple-step strategy for screening Saccharomyces cerevisiae strains with improved acid tolerance and aroma profiles. Applied microbiology and biotechnology. 2020;104(7):3097-3107. View on PubMed
Jiao X, Shen B, Li M, et al. Secretory Production of Tocotrienols in Saccharomyces cerevisiae. ACS synthetic biology. 2022;11(2):788-799. View on PubMed
Ravn JL, Manfrão-Netto JHC, Schaubeder JB, et al. Engineering Saccharomyces cerevisiae for targeted hydrolysis and fermentation of glucuronoxylan through CRISPR/Cas9 genome editing. Microbial cell factories. 2024;23(1):85. View on PubMed

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