PurposeThis paper evaluates consumers' responses to claims regarding fruit sustainability. The authors compared the effects of this factor on consumers' moral satisfaction and purchase intention with respect to 12 sustainability claims.Design/methodology/approachA mixed-model experiment was conducted with seven fruits (i.e. guava, pineapple, red apple, green apple, red grape, green grape and avocado) to evaluate the effects of the 12 sustainability claims on purchase intention through moral satisfaction, relative to a control condition.FindingsThe results show that claims of supporting local farmers are those that move consumers the most. Claims regarding local farmers' production positively affect moral satisfaction and purchase intention.Practical implicationsThis paper takes a consumer behavior approach to sustainability, enabling organizations to consider consumer behavior outcomes that could affect their strategic investments and commitment to social responsibility.Originality/valueFood-related studies have not produced consistent results with respect to the relevance that sustainability claims have for consumers. This study differs from previous studies, as it focuses on fruit, a product that is important for social and environmental sustainability issues. This study demonstrates that, in the case of fruit, sustainability arguments are meaningful to young consumers through the mediating effect of moral satisfaction. Thus, the effect of claims is predicted by the meaning these arguments have for the consumer.