Exploratory study: nutritional, antinutritional, and techno-functional properties of faba bean (Vicia faba L. spp. minor) cultivars

<p>Consumption of faba beans (<em>Vicia faba</em> L. ssp. minor) as a protein source of local origin has a lower climate impact than consumption of meat or imported soybeans. This study assessed the food potential of locally grown faba beans in the Netherlands by evaluating ten different cultivars. The cultivars were assessed for yield, nutritional composition, antinutritional factors, and techno-functional properties, and compared to soybeans and yellow peas. All faba bean cultivars had higher protein contents (26.4–29.6% d.m.) than yellow peas (20.7% d.m.) but lower than soybeans (33.1% d.m.). However, faba beans had a higher protein yield (1.54–2.05 tons ha<sup>-1</sup>) compared to literature values for soybeans (0.96–1.19 tons ha<sup>-1</sup>), but their amino acid composition was less favorable. Faba bean cultivars exhibited higher vicine and convicine levels compared to soy and yellow pea. Dehulling largely reduced the tannin content in the faba bean cultivars. The tannin content of faba beans was lower than that of soy but higher than that of yellow pea. Most faba bean cultivars contained higher levels of phytic acid than soy and yellow pea, and the trypsin inhibitor concentration was comparable to that of yellow pea but markedly lower than in soy. In terms of techno-functional properties, faba bean cultivars showed good foaming capacity and stability, as well as adequate water and oil holding capacities compared to soybeans and yellow peas, with no significant differences between cultivars. Despite the study including measurements of a single growing season and limited replicates, these results highlight faba beans as a promising alternative to soybeans and animal-derived proteins. Selecting the appropriate cultivar is essential to ensure optimal (anti)nutritional composition and techno-functional properties for specific food applications.</p>