Consumer perception and acceptability of microalgae based breadstick

Abstract

[EN] The demand for sustainable and healthy food is increasing. Therefore, it is necessary to find new sources of functional ingredients for design of novel food products. Microalgae are reliable sources of functional ingredients, ready for exploitation with purpose of production of human food. This work explores consumers' acceptance of novel foods based on microalgae. To achieve natural and realistic eating location, sensory analysis was conducted in a real restaurant in Universitat Politecnica de Valencia. A check-all-that-apply questionnaire and hedonic scale registered the consumers' expectations (N = 85), perceptions and acceptance, before and after taste of typical Valencian breadsticks. Food neophobia can affect acceptability of novel foods, thus, participants completed a test designed to measure their attitudes towards new food. Microalgae breadsticks have distinctive characteristics compared to control breadsticks, such as colour, flavour and odour, because of microalgae presence. Still, those breadsticks were as acceptable as the control breadsticks according to the consumer preferences. Consumers expected more differences amongst both breadsticks before tasting, but they lowered the differences in perception after trying them. Consumers consider that the product is healthier, and they would understand if it had greater expense. We believe this information can be useful for selling / marketing this novel product.