Polyphenol extraction from bio-wastes: optimization and kinetic analysis

RODRIGUEZ, ROSA; MAZZA, GERMÁN; ZALAZAR-GARCIA, DANIELA; FERNANDEZ, ANABEL; FABANI, MARÍA PAULA

Studies in Natural Product Chemistry

ELSEVIER

Año: 2024; p. 1 - 23

The agri-food sector generates a significant amount of bioresidues from various plant food processing industries. Improper disposal of these bioresidues in landfills leads to negative environmental impacts. Although these wastes are commonly used as animal feed or fertilizers, they contain beneficial substances, such as polyphenols, which offer the potential for producing high-value compounds. Polyphenols have gained considerable attention due to their bioactivities and applications in industries like cosmetics, food, and pharmaceuticals. They have been found to possess antioxidant, antineoplastic, gene-regulating, and antidiabetic properties, among others, making them beneficial for human health. Additionally, polyphenols play a vital role in the development of food products, contributing to quality attributes like color, sensory characteristics, and protection against microorganisms. The concept of a circular economy has emphasized the need for zero waste practices and the recovery of phenolic compounds. Therefore, it is crucial to select appropriate extraction processes and operating conditions that are economically feasible, technically viable, energy-efficient, and environmentally friendly. Green extraction technologies are particularly suitable for recovering polyphenols from bioresidues, preserving their bioactivity and avoiding damage to the compounds. The global market for polyphenols is projected to grow significantly, reaching $1.6 billion by 2027. However, extraction methods require further research and technological development. Optimization of extraction processes considering multiple operating variables is essential for economic viability. Ultimately, finding the best operating conditions to maximize extraction rate and yield from bioresidues is crucial