Fuente: WIPO "tomato" A moisture-activated carbon dioxide (CO2) release system is disclosed for postharvest preservation of fruits, vegetables, and other fresh plant products. The system comprises a composition including sodium bicarbonate (SBC) and citric acid that, upon exposure to humidity, rapidly generates CO2 gas to suppress fungal growth. Various deployment systems enable immediate or sustained release based on packaging conditions and crop type. The system provides a safer alternative to traditional fumigation, and provides improved decay control and extended shelf life.