Journal of Tourism and Gastronomy Studies, cilt.9, sa.3, ss.1547-1553, 2021 (Hakemli Dergi)
Onion skin is a valuable waste product with good bioactive properties, and its utilization as an
ingredient in foods would be beneficial. Thus, chocolate truffles added with 5% and 10% onion
skin powder (OSP), and peanut butter samples added with 3% and 6% OSP were prepared. The
effects of the OSP on the sensory properties were investigated. The flavor and overall acceptance
of chocolate truffles decreased as OSP content increased. The OSP addition decreased the internal
color and oiliness of chocolate samples. The bitterness of the control was not different from that
of 5% OSP containing chocolate truffles. The addition of OSP to the chocolate truffles did not
affect the odor and sweetness. The odor, color, oiliness, and texture of peanut butter added with
OSP did not change. The OSP addition of up to 3% did not affect the sensory properties of peanut
butter, while 6% OSP decreased the flavor, sweetness, and overall acceptance compared to the
control.