Purification remains the primary bottleneck in the industrial-scale production of complex glycans and bioactive metabolites. CD BioGlyco offers a specialized extractive separation-based separation and purification service, designed to isolate high-value molecules from complex fermentation broths and biological matrices. Leveraging the principles of differential solubility and liquid-liquid equilibrium, our service provides a robust alternative or complement to traditional chromatography. By utilizing advanced solvent systems and phase-separation technologies, we enable the high-throughput recovery of target compounds, such as human milk oligosaccharides (HMOs), specialized lipids, and secondary metabolites, with exceptional yield and cost-efficiency. Our platform is specifically engineered to handle the high viscosity and salt content often found in synthetic biology workflows.
Core Technologies
CD BioGlyco integrates several cutting-edge extraction paradigms to ensure maximum target recovery:
Aqueous Two-Phase Systems (ATPS)
We employ biocompatible ATPS, typically involving polymer-salt or polymer-polymer combinations, to partition delicate glycans or proteins into a specific phase while removing cellular debris and high-molecular-weight contaminants.
Supercritical Fluid Extraction (SFE)
Utilizing CO2 in its supercritical state, we offer a "green" extraction solution that is ideal for hydrophobic molecules, ensuring zero solvent residue and preserving the bioactivity of heat-sensitive compounds.
Deep Eutectic Solvents (DES)
Our laboratory utilizes designer green solvents with tunable polarity, providing high selectivity for specific carbohydrate structures and reducing the environmental footprint of the purification process.
Counter-Current Distribution (CCD)
We implement continuous multi-stage liquid-liquid extraction to achieve high purity levels for compounds with similar partition coefficients, effectively bridging the gap between crude extraction and refined chromatography.
Refining the Essence of Synthetic Biology through Advanced Molecular Partitioning.
The extractive separation-based purification service is a cornerstone of our downstream processing division. Our service scope is comprehensive, covering the entire lifecycle of molecule recovery. We specialize in the large-scale isolation of glycan, where we manage the complex task of separating neutral and acidic sugars from the high-lactose and protein-rich environments of microbial fermentation. Our capabilities extend to natural product extraction, where we utilize optimized solvent systems to harvest high-value plant or fungal metabolites from biomass, ensuring the preservation of fragile molecular structures that traditional methods might degrade. Beyond simple isolation, CD BioGlyco provides custom solvent development, creating tailor-made extraction systems for proprietary molecules that do not respond well to standard methods. This is a critical "Sub-page entry" for clients working with novel glycan structures or hydrophobic bio-actives. Our service also includes process economic analysis, where we provide data-driven insights into solvent recovery and recycling, ensuring that the purification phase of your production remains commercially viable.
Workflow
Feasibility & Partitioning Study
Our process begins with a systematic characterization of the target molecule's partitioning behavior. We perform a series of small-scale equilibrium shake-flask experiments across a diverse matrix of solvent systems, including traditional water-immiscible organic phases and advanced aqueous two-phase systems (ATPS) composed of polymer-salt or polymer-polymer combinations. For each system, we measure the partition coefficient (K), defined as the ratio of the target compound's concentration in the extract (top) phase to its concentration in the raffinate (bottom) phase. This comprehensive screening not only identifies the system delivering the highest K value but, more critically, evaluates the selectivity, the ratio of K for the target versus key impurities. The objective is to pinpoint the chemical environment that provides maximal recovery of the target into the desired phase while achieving the greatest separation from process-related contaminants.
Solvent System Engineering
Leveraging data from the feasibility study, we engage in precise solvent system engineering to fine-tune performance. We systematically adjust critical parameters such as pH (to manipulate the ionization state of ionizable compounds), ionic strength (to induce "salting-out" effects), and the concentration of phase-forming components. We may also introduce minor modifiers or specific extractants to enhance selectivity. Temperature is explored as a key variable, as it can influence phase behavior and partitioning coefficients. Each adjustment is made with the dual purpose of driving the target molecule's concentration in the extract phase to its theoretical maximum while simultaneously suppressing the co-extraction of impurities, thereby achieving both high yield and high purity in the extraction stage.
Process Scale-Up & Optimization
Following laboratory optimization, the process parameters are translated to pilot or production scale using equipment engineered for continuous or semi-continuous liquid-liquid extraction. We select specialized contactors such as centrifugal extractors, mixer-settlers, or pulsed agitated columns based on the system's physical properties (density difference, interfacial tension) and kinetics. The scale-up process focuses on maintaining consistent mass transfer efficiency (e.g., achieving the same number of theoretical stages) and identical phase separation times. Key operating parameters, including flow rates, phase ratio, agitation intensity, and residence time, are optimized at scale to ensure the separation performance observed in small-scale experiments is faithfully reproduced, guaranteeing predictable and reliable yields and purity.
Back-Extraction & Recovery
After the target compound is successfully concentrated in the extract phase (often an organic solvent or a polymer-rich phase), we initiate its recovery into a final, processable form. For organic solvent systems, this typically involves a controlled back-extraction step. Here, the extract phase is contacted with a fresh aqueous solution whose conditions (e.g., pH, ionic composition) are carefully selected to drive the target molecule to partition back into the aqueous phase, effectively leaving the solvent behind for potential regeneration. In ATPS processes, the target-enriched polymer phase may be processed via ultrafiltration, thermal phase inversion, or direct solvent evaporation to recover the product. The outcome is a concentrated, stable aqueous solution of the target, ready for final purification.
Final Polish & Desalting
The recovered aqueous solution often contains residual salts, trace solvents, or closely related impurities. To achieve the final product specifications (typically requiring >95-99% purity), we apply a final polishing step. This may involve desalting and buffer exchange via diafiltration using nanofiltration membranes with an appropriate molecular weight cutoff. Alternatively, for the removal of specific trace organic impurities, a rapid flash chromatography step on a suitable adsorbent (e.g., C18 resin, ion-exchange media) may be employed. This terminal purification stage is designed to be highly efficient and scalable, ensuring the final product consistently meets the stringent purity and composition requirements for its intended application.
Publication Data
Journal: Foods
DOI: 10.3390/foods8110523
IF: 5.1
Published: 2019
Results: In this extensive review, Sharma et al. provide a detailed exploration of the comprehensive utilization of citrus processing waste, emphasizing its potential for sustainable resource recovery. The authors begin by highlighting the global significance of citrus production and the environmental challenges posed by waste accumulation. They systematically describe the chemical composition of citrus waste, including bioactive compounds like flavonoids, phenolic acids, limonoids, coumarins, carotenoids, and essential oils, and discuss various extraction methods such as solvent extraction, ultrasound-assisted extraction, and supercritical fluid extraction. Furthermore, the review covers advanced analytical techniques for structural determination, including chromatography and spectroscopy, and highlights applications in food, nutraceuticals, pharmaceuticals, and industrial products. The authors conclude with future perspectives on optimizing processes and addressing research gaps to maximize economic and environmental benefits.
Applications
Pharmaceutical Intermediate Purification
This service is essential for selectively isolating synthetic intermediates and glycan-derived drug candidates from complex reaction mixtures. This method enables high recovery, excellent purity, and efficient removal of catalysts, by-products, and color bodies during critical stages of pharmaceutical development and scale-up.
Cosmeceutical Active Isolation
The service provides a gentle, high-efficiency pathway for obtaining ultra-pure cosmetic actives such as hyaluronic acid fragments, chitosan oligosaccharides, and botanical polysaccharides. Utilizing selective extraction protocols, we effectively separate these valuable glycans from fermentation broths or natural extracts while removing potential irritants, pigments, and microbial contaminants, ensuring safety and elegance in final formulations.
Rare Sugar Purification
This service achieves the cost-effective, high-yield separation of rare sugars, such as D-allulose (psicose) and D-tagatose, from enzymatic or chemical isomerization mixtures. This process allows us to deliver these high-value sweeteners at the purity levels (>99%) required for food, beverage, and nutraceutical applications.
Environmental Remediation Studies
The technology is used in research for the selective extraction and pre-concentration of trace contaminants, metabolites, or glycan-based biomarkers from complex environmental or biological samples. This step is critical for subsequent toxicological analysis and metabolic fate studies.
Advantages
Exceptional Mass Throughput
Unlike traditional chromatography, our extractive processes are not limited by column pressure, allowing for the rapid processing of thousands of liters of fermentation broth.
Preservation of Bioactivity
Our extraction protocols utilize mild temperatures and biocompatible phases, preventing the denaturation of sensitive glycan-protein conjugates or enzymes.
Effective Removal of Complex Impurities
We excel at separating target molecules from high-concentration salts, pigments, and cellular debris that often clog standard filtration systems.
Tunable Selectivity
Our ability to engineer deep eutectic solvents and ATPS means we can target specific molecular weights or polarities with surgical precision.
Frequently Asked Questions
Customer Review
"We were struggling with a very viscous fungal broth. CD BioGlyco's centrifugal extraction technology handled it easily, providing a clean metabolite extract."
– Dr. S.H., Principal Investigator
"Their commitment to green chemistry through supercritical CO2 extraction helped us meet our sustainability goals while delivering a top-tier product."
– Director M.A., Biotech Operations
"The technical depth CD BioGlyco brings to solvent engineering is impressive. They developed a custom DES that perfectly isolated our target rare sugar."
Precision synthesis and isolation of the LNT II core backbone.
CD BioGlyco provides the specialized expertise and industrial infrastructure required to solve the most difficult purification challenges in glycobiology. Our extractive separation-based purification service ensures that your high-value molecules are isolated with maximum yield, purity, and bioactivity. By bridging the gap between raw fermentation and a refined final product, we empower our clients to bring innovative bio-based products to market efficiently. For detailed technical specifications, project pricing, or to schedule a consultation with our purification experts, please contact us.
Reference
Mahato, N.; et al. Modern extraction and purification techniques for obtaining high purity food-grade bioactive compounds and value-added co-products from citrus wastes. Foods. 2019, 8(11): 523. (Open Access)
For research use only. Not intended for any clinical use.
