Abstract
This study was conducted to investigate the quality characteristics and antioxidant properties of cookies supplemented with 1-4% (w/w) mulberry leaf powder (MLP). The pH and density of cookie dough were not significantly influenced by the increasing levels of MLP (p>0.05), while the moisture content appeared to decrease significantly (p<0.05). The spread ratio of cookies tended to decrease with increasing levels of MLP (p<0.05). Lightness (L*), redness (a*), and yellowness (b*) decreased significantly with a higher amount of MLP (p<0.05). The use of MLP significantly increased the hardness of cookies while 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2’-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS) radical scavenging activities were significantly elevated (p<0.05). The consumer acceptance test indicated that the addition of 1% MLP had a favorable effect on the consumer preferences in all the attributes. Based on the overall observations, cookies with 1% MLP can take advantage of the functional properties of MLP without sacrificing consumer acceptability.
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