These variations in the hardness and cohesiveness results
are likely due to the protein content of tomato pomace (24.67%,
w/w), leading to an increase in protein content and a decrease of moisture
in final product (Table 3). Previously, this group reported on tomato
seed protein preparations, indicating that tomato-seed proteins could
create gels during heat treatment depending on the concentration of
protein (Savadkoohi & Farahnaky, 2012).