The development of next-generation probiotics and Live Biotherapeutic Proroducts (LBPs) increasingly relies on the strategic combination of microbial strains to achieve synergistic functional outcomes. However, understanding the metabolic interplay and physicochemical changes during co-fermentation remains a significant technical challenge for researchers and manufacturers alike. This article provides a technical overview of recent research regarding the synergistic effects of Lactiplantibacillus plantarum P-8 and Lacticaseibacillus paracasei ProSci-92 in fermented milk1, followed by an exploration of how these analytical workflows can be integrated into professional R&D pipelines. For organizations seeking to optimize strain combinations or validate functional claims, Creative Biolabs offers an end-to-end platform to accelerate these complex microbial projects. Inquire about our Probiotic Development Services here.
Overview: Scientific Evaluation: Metabolomic and Physicochemical Insights into Probiotic Co-fermentation1
The foundational study published in the Journal of Dairy Science, titled "Synergistic effects of Lactiplantibacillus plantarum P-8 and Lacticaseibacillus paracasei ProSci-92 in cofermented milk: Metabolomic and physicochemical evaluation," systematically delineates how predefined strain combinations modify the functional properties of fermented dairy matrices.
Experimental Methodology
The researchers established a matrix of single and multi-strain fermentation groups. The co-culture designs integrated varying proportions of L. paracasei ProSci-92 and L. plantarum P-8. The experimental workflow quantified:
-
Microbial Kinetics: Determination of viable cell counts (CFU/mL) across defined incubation windows and subsequent cold storage periods.
-
Physicochemical Parameters: Monitoring of pH depreciation, titratable acidity, and water-holding capacity (WHC) to assess gel network stability.
-
Texture Profile Analysis (TPA): Instrumental measurement of hardness, cohesiveness, and springiness of the coagulated milk matrix.
-
Untargeted Metabolomics: Utilization of Liquid Chromatography-Mass Spectrometry (LC-MS/MS) and Gas Chromatography-Mass Spectrometry (GC-MS) platforms to map volatile organic compounds (VOCs), organic acids, amino acids, and specialized peptides generated during fermentation.
The study concludes that the combination of L. plantarum P-8 and L. paracasei ProSci-92 exerts a synergistic effect that optimizes the fermentation process. The interaction between these strains modifies the metabolic landscape of the milk, resulting in enhanced physicochemical properties and a more complex metabolite profile compared to individual strain applications.
Translational Analysis & Comprehensive CRO Service Mapping
The experimental path described in this research highlights several critical technical requirements for the development of multi-strain probiotics. Creative Biolabs provides a comprehensive suite of CRO services designed to replicate and scale these analytical workflows for our partners.
Before executing co-fermentation matrices, candidate strains must be isolated and identity-verified to prevent contamination and genetic drift.
-
High-Throughput Culturomics: Creative Biolabs provides advanced culturomics platforms using diversified selective media and environmental controls to isolate novel probiotic and next-generation probiotic (NGP) strains from complex biological or dairy niches.
-
Molecular Identification & Genotyping: We utilize 16S rRNA gene sequencing, whole-genome sequencing (WGS), and MALDI-TOF mass spectrometry to provide high-resolution taxonomic identification and ensure absolute strain purity.
Optimizing the co-fermentation observed in the study requires precise control:
-
Media Optimization: Custom formulation of growth media to maximize biomass and metabolite production.
-
Pilot-Scale Fermentation: Scaling from laboratory flasks to bioreactors (up to 50L and beyond) while monitoring real-time kinetics.
The core of this research utilized metabolomics, a service where Creative Biolabs excels:
-
Untargeted and Targeted Metabolomics: Utilizing high-resolution LC-MS/MS and GC-MS platforms, we identify and quantify volatile aroma profiles, short-chain fatty acids (SCFAs), organic acids, amino acid profiles, and bioactive peptides.
-
Bioinformatics Integration: Comprehensive pathway analysis to correlate specific metabolites with functional health benefits or sensory attributes.
Physicochemical, Rheological, and Structural Matrix Evaluation
The stability of an LBP formulation or functional food depends heavily on its physical attributes and shelf-life resistance.
-
Advanced Texture and Rheology Testing: We provide full-scale Texture Profile Analysis (TPA), measuring hardness, adhesiveness, springiness, and viscosity under controlled thermal conditions.
-
Syneresis and Physical Stability Studies: Quantitative testing for water-holding capacity, sedimentation rates, and emulsion stability over real-time or accelerated shelf-life conditions.
Research Products Supporting Probiotic Innovation
To accelerate your internal R&D workflows, Creative Biolabs maintains an extensive, rigorously validated inventory of high-purity biological products and research-grade bacterial strains specifically suited for comparative co-fermentation and microbiome studies.
-
Reference Probiotic Strains: A diverse library of characterized Lactobacillus, Bifidobacterium, and Bacillus strains for benchmarking and comparative studies.
-
Metabolite Standards: High-purity organic acids, amino acids, and short-chain fatty acids (SCFAs) for use as controls in MS-based metabolomic workflows.
-
Next-Generation Probiotic (NGP) Library: For advanced therapeutic research, we provide anaerobic strains such as Akkermansia muciniphila, Faecalibacterium prausnitzii, and Bacteroides fragilis in high-viability, lyophilized, or frozen formats.
Advanced Technological Platform Advantages
Navigating the complexities of the "gut-lung axis" or "probiotic synergy" requires more than just equipment; it requires deep domain expertise. Our platform offers:
Integrated Multi-Omics Platform
Our facility bridges the gap between genomics, transcriptomics, and metabolomics. By pairing next-generation sequencing with high-resolution mass spectrometry, we correlate specific genetic loci with the production of synergistic metabolites, providing an explanatory mechanism for observed phenotypes.
Strict Anaerobic and Environmental Control Suites
Many next-generation therapeutic strains are highly sensitive to oxygen. Our state-of-the-art anaerobic workstations and specialized bioreactors maintain strict hypoxic environments down to parts-per-million oxygen levels, ensuring the viability of sensitive strains during co-culturing and downstream processing.
Quality Management and Regulatory Compliance
All characterization, safety profiling (such as antibiotic susceptibility and cytotoxicity testing), and stability evaluations are conducted under strict quality oversight, supplying clients with dossier-ready data for regulatory filings.
Customizable Research Design
We do not offer one-size-fits-all solutions; every project is tailored to the specific metabolic characteristics of the client's strains.
Broad Application Fields for Co-Fermentation Research
-
Live Biotherapeutic Products (LBPs): Designing defined multi-strain consortia aimed at treating gastrointestinal disorders, metabolic syndromes, or modulating the gut-brain axis.
-
Functional Foods and Nutraceuticals: Developing enhanced synbiotics, fortified plant-based milk alternatives, and bioactive beverages with improved shelf-stability and optimized flavor profiles.
-
Animal Nutrition and Probiotics: Formulating robust microbial additives for livestock feed to improve nutrient absorption, reduce reliance on sub-therapeutic antibiotics, and enhance animal resilience against pathogens.
-
Cosmetic and Topical Biotherapeutics: Engineering co-fermented lysates or live strains for skin microbiome modulation, targeting barrier repair and anti-inflammatory pathways.
Partnering for Probiotic Excellence
At Creative Biolabs, we are dedicated to providing the technical infrastructure and scientific expertise necessary to turn these complex observations into commercially viable products. Whether you are identifying a new synergistic pair or validating the metabolic output of an existing formulation, our team is ready to support your journey.
Are you ready to optimize your multi-strain formulation or accelerate your LBP pipeline? Contact the Scientific Experts at Creative Biolabs today to submit a detailed project inquiry, request a technical consultation, or secure an obligation-free quote tailored to your experimental specifications.
Frequently Asked Questions (FAQs)
How does Creative Biolabs ensure the stability of multi-strain ratios during scale-up?
We utilize real-time quantitative PCR (qPCR) and digital PCR (dPCR) with strain-specific primers to track individual population kinetics within a mixed culture during scaling. This allows us to adjust inoculation parameters, nutrient feeds, and physical conditions to maintain the desired ratio from benchtop to pilot scale.
Can you perform metabolomic analysis on non-dairy fermentation matrices, such as plant-based or synthetic media?
Yes. Our extraction protocols and mass spectrometry workflows are fully adaptable to diverse matrices, including soy, oat, almond milk, synthetic chemical formulations, and biological fluids (e.g., intestinal aspirates, serum, fecal water).
What parameters are included in your standard strain safety evaluation suite?
Our safety profiling covers minimum inhibitory concentration (MIC) phenotypic antibiotic susceptibility testing, genomic screening for transmissible antibiotic resistance genes (ARGs) and virulence factors, hemolytic activity assays, and in vitro cytotoxicity screening against human intestinal cell lines.
Reference
-
Liu, Lin et al. "Synergistic effects of Lactiplantibacillus plantarum P-8 and Lacticaseibacillus paracasei ProSci-92 in cofermented milk: Metabolomic and physicochemical evaluation." Journal of dairy science 109,3 (2026): 2242-2256. doi:10.3168/jds.2025-27878. Distributed under Open Access license CC BY 4.0, without modification.
