The sustainable supplier assessment has emerged as a strategic activity that seeks to green the value chain. Plentiful studies evaluating sustainable suppliers in the agroindustry field have been proposed. These investigations focus on selecting or ranking from the best to the worst performance. However, the sorting approach that would be more adequate when it comes to investigating the performance of partners with a view to making improvements to their systems is generally not considered to solve this problem, being an important gap in the literature. In this scenario, this research provides a food supplier sorting model using Value‐Focused Thinking (VFT) and Flexible and Interactive Tradeoff (FITradeoff) method for sorting problematic to suggest upgrades and advancements in the operation of the suppliers searching for a sustainable development. The suppliers were sorted into predefined categories depending on sustainability level: sustainable suppliers; suppliers in path of development; and non‐green suppliers. The method was applied for evaluating suppliers in a Colombian food industry. Finding shows that the proposed model is useful to categorize suppliers, serving to design particular green programs for each class to improve them, while also suggesting a strategic direction to greener the food supply chain in accordance with the goals of the sustainable development.

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Paper aims: The objective of this research is to propose a multicriteria negotiation model for selecting a sustainable packaging supplier in the food industry. The model aims to minimize the environmental, social and economic impacts of the production process of plastic while ensuring the operational criteria of packaging.Originality: Despite the high number of scientific research using multicriteria decision-making suggested to select a supplier, the proposed negotiation model is innovative as it includes green manufacturing as a criterion for negotiation, alongside price and delivery time, to promote sustainable supply chain management. Research method:The research method involves three stages: pre-negotiation, negotiation (based on FITradeoff), and post-agreement. The proposed model is illustrated using a case study of a Colombian slaughterhouse that needs to select a sustainable packaging supplier for the next two years. Main findings:The main findings indicate that the proposed model that uses the FITradeoff for negotiation solves the problem of selecting sustainable packaging suppliers while promoting sustainable supply chain management in the agribusiness sector. Implications for theory and practice:The model has implications for both theory and practice. It encourages interdependent companies to collaborate and enhances efficiency in greener terms for supply chains, buyer and seller firms. The proposition of an original integrative negotiation protocol for selecting sustainable suppliers in agribusiness can provide enterprises with a set of negotiation parameters to achieve successful sustainable supply chain management.

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