**2. Circular economy in agroindustry**

In recent decades, the exploitation of natural resources and raw materials has increased, due to economic, productive, and environmental problems. These factors are decisive for the circular economy, which has forced it to change from a linear model to a circular model [18]. A linear economic model is based on the production, use, and disposal of a good or product. In the context of environmental sustainability, the circular economy proposes a strategy that reduces the negative impact on the environment where the final product is the source of value creation, increasing its useful life [19]. Circular economy is based on key strategies such as waste prevention design, where both, products and services are designed and created so that the production of waste is minimal or eliminated. Likewise, the idea is to give a second life to a product and thus reduce raw material to produce a new product [3]. Thus, the products must be more versatile, modular, and simple to adapt to different applications during their shell-life. In addition, it is important to use renewable energy to reduce the negative impact on the environment [3].

The benefits of the circular economy are linked to higher economic growth by using resources efficiently, creation of employment opportunities through the creation of industries that promote innovation and entrepreneurship, net savings in the cost of raw materials, reduction of environmental pollution in the form of carbon dioxide emission, reduction of water pollution and responsible use of the soil [20]. In 2015, the United Nations proposed the fulfillment of 17 Sustainable Development goals by 2030. To meet these objectives, there must be a joint action of governments, the private sector, civil society, etc. In the case of companies, it consists of promoting business models that are more committed to ecosystems, society, and living conditions of the world population [21].
