According to the Food and Agriculture Organization (FAO), one-third of the world's agricultural land, equivalent to 4.8 billion hectares in 2018, was dedicated to cropland. Production losses from post-harvest to distribution can reach up to 25%, varying across different food chains. It is evident that food chains generate significant waste and have environmental impacts throughout their various stages, including land production, animal farming, food processing, transportation, market activities, and consumption. These stages result in the disposal of organic residues, packaging waste, greenhouse gases, and wastewater, representing untapped potential resources. In 2019, farming accounted for 13.35% of the global food chain's carbon footprint (CO2 greenhouse gas emissions), while land use change contributed 6.49%, and pre and post-production activities contributed 10.79%. These sectors play a pivotal role as the main contributors to environmental emissions within the food chain. In response, global initiatives have been implemented to reduce these widespread impacts and foster the development of sustainable production systems.

This is where a circular economy practice can offer a powerful systems solution framework for the food industry to tackle food waste. It offers a system that minimises waste, optimises resource utilisation, and promotes sustainability. Adapting our current food systems to a more circular approach can provide significant benefits to tackle climate change and to increase biodiversity, as well as to provide nutritious food for everyone. A circular economy can help build a food system that guarantees that the food we produce never creates waste. It can eliminate food waste, redistribute access to surplus edible food and recycle inedible food by-products into inputs for new products. In very simple terms, it’s building a closed loop system that is regenerative and sustainable.

As it stands, the current food system is not sustainable; industrial farming has become a leading source of GHG emissions and biodiversity decline. As mentioned, a third of the food produced is wasted annually whilst nearly 10% of the world’s population still goes hungry. Therefore, one key aspect to a circular food system is adopting sustainable agricultural practices. Organic farming and regenerative agriculture prioritise soil health, reduce chemical usage, and promote biodiversity. Technological advancements such as precision farming, vertical farming, and hydroponics enhance crop yields while minimising resource inputs.

Another important aspect to a circular food system is to encourage responsible consumption to reduce food waste. Educating consumers about mindful food consumption practices, including meal planning, proper storage techniques, and portion control, can significantly minimise waste. Businesses can contribute by offering smaller portion sizes, implementing "ugly food" campaigns to reduce aesthetic food waste, and supporting composting and food recycling initiatives.

Similarly, food recovery and redistribution initiatives play a crucial role. Collaborative efforts between food banks, shelters, and community organisations ensure edible food reaches those in need. Technologies like anaerobic digestion and bioconversion can transform organic waste into valuable resources while reducing greenhouse gas emissions.

Behaviour Change: Encouraging responsible consumption habits and raising awareness about the impacts of food waste necessitate sustained education campaigns and incentives. Overcoming deeply ingrained behaviours and mindsets poses a significant challenge but is critical for the success of circular initiatives.

Collaboration and Partnerships: Governments, businesses, non-profit organisations, and consumers must work together to establish collaborative partnerships. Sharing best practices, resources, and knowledge can accelerate the adoption of circular solutions. Public-private partnerships can drive innovation, investment, and the implementation of circular technologies and infrastructure.

After discussing the significance of a circular food system, we thought it would be critical to highlight the relationship between food waste and global emissions. From a circularity context, isn’t food a natural product that can be biodegradable? Why should we be worried about its disposal? In reality, food waste significantly contributes to global emissions and exacerbates climate change. And it’s time that we debunk the myth that food waste is biodegradable and harmless.

In conclusion, the circular economy offers a transformative approach to tackle food waste in the food industry. By adopting circular practices, we can minimise waste, optimise resource utilisation, and create a more sustainable and resilient food system. While challenges exist, such as infrastructure, behaviour change, and regulatory barriers, collaborative efforts, supportive policies, and education can overcome these obstacles.

References:

Gonçalves, M.L.M.B.B., Maximo, G.J. Circular Economy in the Food Chain: Production, Processing and Waste Management. Circ.Econ.Sust. 3, 1405–1423 (2023).  https://doi.org/10.1007/s43615-022-00243-0