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KMID : 0380620150470060738
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Korean Journal of Food Science and Technology
2015 Volume.47 No. 6 p.738 ~ p.743
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Quality Characteristics of Jelly Containing Aronia (Aronia melanocarpa) Juice
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Hwang Eun-Sun
Nhuan Do-Thi
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Abstract
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This study was conducted to investigate the quality characteristics and antioxidant activities of jelly prepared with different amounts of aronia juice. Aronia juice was incorporated into jelly at concentrations of 3, 6, and 9%, based on the total weight of water. While the total water content of the jelly in different groups was not significantly different, the sugar content significantly increased with increasing levels of aronia juice. In the chromaticity measurements, L* and b* values decreased, whereas the a* values increased with increasing levels of aronia juice in the jelly. Further, the hardness and chewiness of jelly increased with increasing amounts of aronia juice. On the other hand, resilience, cohesiveness, and gumminess of the jelly were nearly similar for the control and samples treated with aronia juice. The total polyphenols, flavonoids, and anthocyanin contents increased proportionally with increasing levels of aronia juice. In addition, the antioxidant activity measured in terms of the 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3- ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) radical scavenging activities of the jelly extracts were significantly higher for the samples containing aronia juice compared to the control and increased proportionally with increasing concentrations of aronia juice. In the sensory evaluation, the sample containing 6% aronia juice was perceived to have the best color, taste, texture, chewiness, flavor, and overall acceptance. These results suggest that aronia juice may be a useful ingredient in jelly for improving its quality as well as sensory and antioxidant potential.
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KEYWORD
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aronia, jelly, anthocyanin, antioxidant, sensory evaluation
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