In this paper, two different jam making methods were applied
and compared on different colored carrots. As regards sensory
evaluation, the jams produced by both methods were considered
acceptable. Nevertheless, the jam obtained through mild method
satisfied consumer acceptability more than jam obtained through
common method, especially for the purple type. Moreover, mild
method preserved the color and most of the antioxidant activity
and total phenols of raw carrots more than common method. It
could therefore be concluded that the overall quality of perishable
vegetables, such as local carrots, can be preserved by using the mild
method described in this paper. In addition, from a technological
point of view, mild method helps the food processing industry to
decrease production costs, with shorter working and cooking times
compared to common method. This method, applied in this
research for thefirst time on different types of carrots, could be
applied to other nutrient-rich vegetables that are difficult to store
in their raw state, and that require a making method aimed to
preserve their quality and freshness, as required by consumers.
Nevertheless, more information about the effect of storage on the
preservation of quality in mild processed jams could be needed
before any hypothetical industrial implementation.