IOT Based Meat and Fruits Freshness Detection

Food freshness monitoring is essential to ensure consumer safety and reduce food waste caused by spoilage of meat and fruits. Conventional methods mainly depend on visual inspection and manual checking, which are often inaccurate and inefficient. This paper presents an IoT-based system for real-time detection of meat and fruit freshness using environmental and gas sensing techniques. The proposed system employs an ESP8266 microcontroller integrated with a DHT11 sensor to measure temperature and humidity, an MQ135 gas sensor to detect spoilage-related gases, and a moisture sensor to identify surface wetness. Sensor data are continuously monitored and compared with predefined threshold values to classify the food condition as fresh, moderate, or spoiled. A buzzer is used to provide immediate alerts when spoilage is detected, while Wi-Fi connectivity enables remote monitoring through a web interface. Experimental results show that the system effectively detects freshness variations and provides timely alerts. The proposed solution is low-cost, reliable, and suitable for household, storage, and retail food safety applications.