The article "Green Extraction of Natural Products: Concept and Principles" by Farid Chemat, Maryline Abert Vian, and Giancarlo Cravotto discusses the design of sustainable and environmentally friendly extraction methods for natural products. The authors introduce six principles of green extraction, which aim to reduce energy consumption, use alternative solvents, and ensure the safety and quality of the final product. These principles include: 1. **Innovation by Selection of Varieties and Use of Renewable Plant Resources**: Focusing on fully renewable resources and preserving biodiversity. 2. **Use of Alternative Solvents and Principally Water or Agro-Solvents Issued from Agricultural Resources**: Replacing petrochemical solvents with biodegradable and non-toxic alternatives. 3. **Reduce Energy Consumption by Energy Recovery and Using Innovative Technologies**: Optimizing processes, recovering heat, and using innovative technologies to reduce energy use. 4. **Production of Co-Products Instead of Waste to Include the Bio and Agro Refining Industry**: Utilizing by-products and co-products to create additional value. 5. **Reduce Unit Operations through Technical Innovation and Favour Safe, Robust and Controlled Processes**: Intensifying processes to reduce steps and improve efficiency. 6. **Aim for a Non Denatured and Biodegradable Extract without Contaminants with "Green" Values**: Ensuring the extract is free from contaminants and biodegradable. The article highlights the importance of these principles in addressing environmental and economic challenges, and provides examples of innovative technologies and processes, such as "plant milking" and supercritical CO2 extraction. The authors conclude that green extraction is a new concept that meets the challenges of the 21st century, protecting the environment and consumers while enhancing industry competitiveness.The article "Green Extraction of Natural Products: Concept and Principles" by Farid Chemat, Maryline Abert Vian, and Giancarlo Cravotto discusses the design of sustainable and environmentally friendly extraction methods for natural products. The authors introduce six principles of green extraction, which aim to reduce energy consumption, use alternative solvents, and ensure the safety and quality of the final product. These principles include: 1. **Innovation by Selection of Varieties and Use of Renewable Plant Resources**: Focusing on fully renewable resources and preserving biodiversity. 2. **Use of Alternative Solvents and Principally Water or Agro-Solvents Issued from Agricultural Resources**: Replacing petrochemical solvents with biodegradable and non-toxic alternatives. 3. **Reduce Energy Consumption by Energy Recovery and Using Innovative Technologies**: Optimizing processes, recovering heat, and using innovative technologies to reduce energy use. 4. **Production of Co-Products Instead of Waste to Include the Bio and Agro Refining Industry**: Utilizing by-products and co-products to create additional value. 5. **Reduce Unit Operations through Technical Innovation and Favour Safe, Robust and Controlled Processes**: Intensifying processes to reduce steps and improve efficiency. 6. **Aim for a Non Denatured and Biodegradable Extract without Contaminants with "Green" Values**: Ensuring the extract is free from contaminants and biodegradable. The article highlights the importance of these principles in addressing environmental and economic challenges, and provides examples of innovative technologies and processes, such as "plant milking" and supercritical CO2 extraction. The authors conclude that green extraction is a new concept that meets the challenges of the 21st century, protecting the environment and consumers while enhancing industry competitiveness.