Complex matrices consume column capacity
Pigments, waxes and co-extracted compounds compete for the packed stationary phase. Loading decreases, separation performance changes and columns require more frequent cleaning or replacement.
Liquid-Liquid Chromatography for Natural Extracts
LiLiCHRO
Natural extracts are chemically complex, variable and
often difficult to process with packed columns. LiLiChro’s
centrifugal partition chromatography platform provides a
flexible, support-free route from early feasibility testing to
preparative production.
Deep Expertise
Feasibility Studies
Scalable Systems
Partner in Your Success
Natural Products
Natural Extracts are not clean standards
The chemical profile of a botanical extract depends on the plant, harvest, extraction conditions and every processing step that follows. Valuable targets are surrounded by pigments, waxes, lipids, sugars, closely related metabolites and other compounds with similar behaviour.
The purification method must handle the extract that actually enters the process—not an idealised analytical standard.
Fixed column chemistry limits flexibility
When closely related compounds cannot be separated on the available bonded phase, changing the column may still fail to provide the required selectivity.
Valuable compounds can be lost
High-value natural compounds may adsorb irreversibly or desorb incompletely from silica and other solid stationary phases, reducing overall recovery.
Scale changes the economics
A method that works at analytical scale can become slow, pressure-intensive and expensive when the required quantity increases from milligrams to grams or kilograms.
Where CPC Can Create Value in Natural-Product Purification
Typical targets: EGCG, catechin, epicatechin, resveratrol, anthocyanins and related polyphenols.
CPC can separate high-value polyphenols from complex plant matrices and distinguish between structurally related compounds through solvent-system selectivity.
Typical targets: ginsenosides and other steroidal or triterpenoid saponins.
Liquid-liquid partitioning can provide useful selectivity for structurally dense glycoside mixtures where packed-column recovery or loading becomes limiting.
Typical targets: catharanthine, vindoline and other neutral or ionisable alkaloids.
Solvent composition and pH can be adjusted to change partition behaviour and improve separation between the target and closely related impurities.
Typical targets: curcumin, related diarylheptanoids, capsaicin and dihydrocapsaicin.
CPC can support enrichment or isolation from pigment-rich oleoresins and concentrated botanical extracts.
Typical applications: chlorophyll removal, colour reduction and removal of unwanted lipophilic matrix components.
CPC can selectively remove interfering compounds while preserving the value of the
desired fraction.
Typical targets: selected non-volatile or difficult-to-distil terpenoids and aromatic components.
CPC is worth evaluating when liquid-liquid partitioning provides useful selectivity beyond what can be achieved through evaporation or distillation.
Why CPC Works Better for Complex Natural Extracts
1. No packed column to foul
Crude extracts use up all your columns
There is no silica bed to clog, degrade or replace. CPC can therefore be particularly valuable for crude, pigment-rich and column-fouling botanical matrices.
Feed solubility, precipitation and particulate content must still be controlled.
2. Flexible selectivity
Extract samples can differ
Both liquid phases can be changed—including the stationary phase. Instead of being limited mainly by purchased column chemistry, method developers can adjust solvent composition, phase direction, pH and operating mode to find new selectivity.
3. High Yield and Recovery Potential
Don’t lose valuable compounds
Because there is no solid support, CPC reduces the risk of irreversible adsorption. Valuable compounds remain in a liquid phase throughout the separation, supporting high recovery in suitable applications.
4. Scalable platform
From lab to Production
The same solvent system and partition principle can provide the foundation for moving from method development toward preparative and industrial production.
Flow, loading, rotor speed and stationary-phase retention must still be validated at every scale.
Column-free
0
packed silica columns
Scale range
1–200 mg
to
2–3 kg
typical sample range across the LiLiChro platform*
Solvent recycling
Up to
85–95%
solvent recycling in suitable workflows*
Screening
≈
7 days
for a typical Screening Study*
From Extract to Production: A Practical CPC Workflow
1.
Understand the extract
Source •
extraction •
target •
impurities •
current process •
quantity
2.
Check sample behaviour
Solubility •
precipitation •
particulates •
phase settling •
emulsions
3.
Find the partition window
Partition coefficient •
selectivity •
phase stability •
sample compatibility
4.
Optimise and transfer
Loading •
flow •
rotation •
stationary-phase retention •
fraction timing
Botanical care
Pre-conditioning may include filtration, concentration or dewaxing. The goal is the shortest robust route to the valuable fraction.
Frequently Asked Questions
Can CPC handle crude or highly complex botanical extracts?
Often, yes. CPC has no packed solid stationary phase and is therefore more tolerant of complex matrices.
However, solubility, particulates, precipitation and emulsion behaviour must still be checked.
What purity can CPC achieve?
Purity is compound- and method-specific. CPC may be used for enrichment, fractionation, remediation or final isolation. Published natural-product studies report results above 97–98% purity for selected compounds.
Does CPC replace preparative HPLC or flash chromatography?
Not automatically. CPC can replace a solid-phase step when recovery, fouling, loading or consumable cost is the bottleneck. It can also work before HPLC as a capture or enrichment step.
Is biphasic solvent-system development difficult?
It is different from selecting a packed-column chemistry, but it can be approached systematically. Candidate solvent systems are screened for partition coefficient, selectivity, sample solubility and phase behaviour.
Can a CPC method scale from R&D to production?
The same biphasic solvent system and partition behaviour provide a strong transfer basis. Flow, rotor speed, stationary-phase retention, loading and fraction timing must still be validated on the target instrument.
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