Sustainable Extraction of Bioactive Compounds from Plant Resources

The sustainable extraction of bioactive compounds from plant resources encompasses methodologies and practices designed to maximise yield and preserve bioactivity while minimising environmental impact. Central to this endeavour is the adoption of green chemistry principles—employing benign solvents, reducing energy consumption and integrating circular-economy concepts to valorise agricultural and forestry side-streams. Emerging technologies such as ultrasound-assisted, microwave-assisted and supercritical fluid extraction offer enhanced selectivity and shorter processing times, often in combination with green solvents (ethanol, water or CO₂). Life cycle assessments and techno-economic evaluations increasingly guide process design, ensuring that scale-up from laboratory to industrial application balances resource efficiency with economic viability. This holistic approach supports the production of functional ingredients for nutraceutical, pharmaceutical and cosmetic sectors, turning biomass residues into high-value materials while preserving ecosystem integrity and reducing carbon footprints.

Research from Nature Portfolio

Recent studies have applied life cycle assessment to compare classic and innovative extraction processes for polyphenols from forestry residues. One investigation demonstrated that ultrasound-assisted extraction, when paired with a biomass-fired boiler at scale, can significantly lower environmental impacts—particularly those associated with heating and solvent production—compared with conventional Soxhlet or alkaline methods. Another work characterised the dynamics of resin acids and other extractives during natural microbial degradation of spruce bark, revealing key steps in extractive compound breakdown and offering insight into how process conditions might be tuned to recover valuable molecules before microbial loss. Together, these contributions refine our understanding of both the environmental performance and the chemical transformations involved in sustainable valorisation of woody biomass.

Sustainable Extraction of Bioactive Compounds from Plant Resources publication trend

The graph below shows the total number of articles in sustainable extraction of bioactive compounds from plant resources across all publications each year (not limited to Nature Index journals).

Technical terms

Ultrasound-Assisted Extraction (UAE): Use of high-frequency sound waves to generate cavitation, enhancing mass transfer and cell disruption for improved compound release.

Microwave-Assisted Extraction (MAE): Application of microwave energy to heat solvents and plant matrices rapidly and uniformly, accelerating solute diffusion.

Supercritical Fluid Extraction (SFE): Use of fluids above their critical temperature and pressure—often CO₂—to achieve solvent properties that allow selective extraction with minimal residues.

Life Cycle Assessment (LCA): Systematic evaluation of environmental impacts associated with all stages of a product’s life, from raw material extraction through processing and disposal.

Polyphenols: A class of secondary plant metabolites characterised by multiple phenolic rings, noted for antioxidant, anti-inflammatory and antimicrobial properties.

References

1. Resin acids play key roles in shaping microbial communities during degradation of spruce bark. Nature Communications (2023).
2. Valorization of long-neglected spruce bark and bark-press effluents through integrated utilization of stilbenoids and pectin. Chemical Engineering Journal (2023).
3. Life cycle assessment of polyphenols extraction processes from waste biomass. Scientific Reports (2020).
4. Insights from combining techno-economic and life cycle assessment – a case study of polyphenol extraction from red wine pomace. Resources Conservation and Recycling (2021).
5. Comparative Study Regarding the Chemical Composition and Biological Activity of Pine (Pinus nigra and P. sylvestris) Bark Extracts. Antioxidants (2021).