SBP 43 - Enhancing banana, raspberry and blackberry shelf life: edible oil-infused edible coating for sustainable preservation

In a world where food waste is a growing concern, finding innovative solutions to extend the shelf life of perishable fruits has become increasingly important. Our project explores the potential of edible coatings infused with essential oils to create a natural barrier that protects bananas, blackberries, and raspberries from rapid deterioration.

The inspiration for this project stemmed from a desire to reduce the staggering amount of fruit that goes to waste due to spoilage during transportation and storage. We recognized the need for a sustainable and effective method to preserve these delicate fruits without compromising their quality or relying on synthetic preservatives.

We developed a range of edible coating formulations using hydroxypropyl methylcellulose (HPMC) as a base, combined with essential oils such as moringa, rosemary, and eucalyptus. These natural ingredients were carefully selected for their potential to inhibit microbial growth, reduce moisture loss, and slow down the ripening process.

To test the efficacy of our coatings, we applied them to fresh bananas, blackberries, and raspberries and conducted a series of experiments. We monitored the fruits' visual appearance, weight loss, and microbial growth over time, comparing the results to uncoated control samples.

The findings were both encouraging and eye-opening. For bananas, the coatings containing HPMC and essential oils demonstrated significant improvements in shelf life, maintaining the fruits' firmness, color, and overall quality for an extended period. However, we discovered that the direct application of essential oils without HPMC had a detrimental effect, leading to accelerated blackening and decay.

Surprisingly, the same coatings that worked well for bananas proved less effective for blackberries and raspberries. Despite our efforts, these delicate berries experienced increased weight loss and microbial growth compared to the uncoated samples. This revelation highlighted the complexity of developing a one-size-fits-all solution and the need to tailor coatings to the specific characteristics of each fruit.

Through this project, we gained valuable insights into the intricacies of fruit preservation and the challenges that lie ahead. While our edible coatings showed promising results for bananas, further research is necessary to refine the formulations and application methods for berries and other delicate fruits.

Looking to the future, we envision our experiment as a stepping stone towards more sustainable and effective fruit preservation techniques. By continuing to explore the synergy between edible coatings and natural compounds, we aim to develop customized solutions that cater to the unique needs of different fruits, reducing waste and ensuring longer-lasting freshness.

Our project not only contributes to the advancement of food science but also has the potential to make a tangible impact on the global food supply chain. By extending the shelf life of fruits, we can reduce the environmental footprint associated with food waste, support farmers and retailers, and ultimately improve access to fresh, healthy produce for consumers worldwide.

In conclusion, it embodies our commitment to finding innovative, sustainable, and natural solutions to the pressing issue of fruit spoilage. Through our research, we have taken a significant step towards unlocking the potential of edible coatings and essential oils, paving the way for a future where fresh fruits can be enjoyed for longer, with minimal waste and maximum benefits for all.