Carbon-based nanozymes for organic compound removal in coconut water

Overview

This research presents a novel approach to correcting off-flavors and undesired aromas in coconut water using engineered carbon-based nanozymes. Natural enzymes, such as laccases, are widely used in the food and beverage industry for quality correction but face limitations including high production costs, structural instability, and sensitivity to chemical conditions. To overcome these drawbacks, this project explores the design of nanozymes—artificial enzymes based on engineered nanomaterials—that can selectively degrade unwanted compounds while offering cost-efficient manufacturing, ease of modification, and superior catalytic stability.

The proposed solution centers on copper-containing carbon dots (CDs) designed to mimic laccase activity. Laccases are copper-containing oxidases capable of oxidizing a broad range of organic compounds responsible for off-flavors in beverages. By incorporating copper into carbon dot nanostructures, the team aims to enhance laccase-mimicking catalytic performance, enabling efficient degradation of target compounds in "From Concentrate Coconut Water."

Technical specifications

Core technology:

• Copper-containing carbon dot nanozymes synthesized through eco-friendly processes
• Laccase-mimicking catalytic activity for oxidation of organic compounds responsible for off-flavors and aromas
• Tunable selectivity through copper doping during synthesis

Key advantages over natural enzymes:

• Lower manufacturing and purification costs compared to natural laccases
• Higher structural and catalytic stability across a broader operational range
• Ease of chemical modification and functionalization
• Potential for magnetic property integration to simplify recovery and enable reusability

Research approach:

• Characterization of coconut water to identify specific off-flavor and aroma compounds
• Synthesis and optimization of copper-containing CDs nanozymes
• Concentration and time-dependent testing to determine optimal treatment conditions
• Bromatological and sensory analysis to validate quality improvements
• Exploration of magnetic nanozyme variants for enhanced recovery and reusability

Technology readiness level

The project is at an early-to-mid stage of development. The research team has established expertise in both natural enzyme-mediated degradation of undesired compounds and the eco-friendly synthesis and characterization of enzyme-mimicking nanozymes. Prior results and existing literature support the feasibility of enhancing catalytic activity through proper nanozyme design. The next phases involve identifying target compounds in coconut water, synthesizing and optimizing the copper-containing carbon dot nanozymes, and conducting systematic validation through bromatological and sensory analyses. Further development will explore magnetic recovery capabilities to improve reusability and practical deployment in beverage processing workflows.