Investigating the Potential of Tomato Peel Based Biodegradable Films for Eco-Friendly Packaging

The increasing demand for sustainable and biodegradable materials has led to a surge in research on plant-based alternatives to traditional plastics. Tomato peels, a byproduct of tomato processing, offer a promising source for the development of such materials. This study focuses on the water vapor barrier properties of a film made from tomato peels, a critical factor for various applications, including food packaging and medical use.

To determine the water vapor transmission rate (WVTR) of the film, the cup method, also known as the gravimetric method, was employed. Labthink C360H water vapor transmission rate tester was used for this purpose.

The testing procedure involved placing the film between a desiccant-filled cup and a lid, creating a sealed chamber. The testing procedure involved placing the film between a desiccant-filled cup and a lid, creating a sealed chamber. The equipment then measured the weight change of the cup over time to determine the WVTR.

The WVTR of the tomato peel film was found to be 72.317 g/(m²·24h). While this value indicates a moderate water vapor barrier, it may not be sufficient for applications requiring high levels of moisture resistance.

Labthink C360H Water Vapor Transmission Rate Test System is designed and manufactured based on the gravimetric determination method and conforms to the requirements of ASTM E96. This instrument can be used to measure the water vapor transmission rate of barrier materials with high, medium and lower moisture barrier properties with a wide testing range and high testing efficiency. The instrument features Labthink’s patented test chamber design with multiple test dishes. C360H is equipped with precision made test dishes, highly accurate balance, embedded professional software which supports automatic controlling of temperature, humidity and flow rate precisely and guarantees the testing sensitivity and repeatability of the test results. C360H is applicable to determination of water vapor permeability of plastic films, sheeting, paper, packages and other packaging materials in food, pharmaceutical, medical apparatus, building materials and consumer goods, etc.

To improve the water vapor barrier properties of tomato peel-based films, several strategies can be explored. For instance, combining tomato peel extract with other biopolymers, such as starch or chitosan, can enhance the film's barrier properties. Or applying coatings or treatments to the film's surface can create a more effective barrier against water vapor.

Tomato peel-based films offer a sustainable and biodegradable alternative to traditional plastic films. However, their water vapor barrier properties may need to be improved for certain applications. Future research and development efforts will be crucial in optimizing these films for various uses.


As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!