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Physicochemical and Antioxidant Properties of Yanggaeng Incorporated with Orange Peel Powder

진피 분말을 첨가한 양갱의 품질 및 항산화 활성

  • Choi, Ju Yeon (Department of Food Science and Engineering, Daegu University) ;
  • Lee, Jun Ho (Department of Food Science and Engineering, Daegu University)
  • Received : 2014.09.23
  • Accepted : 2014.11.18
  • Published : 2015.03.31

Abstract

The feasibility of incorporating orange peel powder (OPP) as a value-added food ingredient into convenient food products, was investigated using yanggaeng as a model system. OPP was incorporated into yanggaeng at amounts of 0, 3, 6, 9, and 12% (w/w) based on total weight of cooked white beans and OPP. pH decreased significantly with increasing levels of OPP (P<0.05), and moisture content was ranged from 46.28% to 47.87%. In terms of color, lightness, redness, and yellowness increased significantly (P<0.05) with increasing levels of OPP. Hardness increased significantly when OPP content was higher than 6% in the formulation (P<0.05). Total polyphenol content and 1,1-diphenyl-1-picrylhydrazyl radical scavenging activity were significantly increased by addition of OPP in the formulation (P<0.05). Finally, consumer acceptance test indicated that the highest levels of OPP incorporation (12%, w/w) had an adverse effect on general consumer preferences. In contrast, yanggaeng with moderate levels of OPP (3~6%, w/w) is recommended (with respect to overall preference score) to take advantage of the antioxidant properties of OPP without sacrificing consumer acceptability.

진피 분말의 첨가량을 달리하여 양갱을 제조한 후 이화학적 특성 및 관능적 특성을 알아보았다. 진피 분말의 첨가량이 증가할수록 양갱의 pH는 유의적으로 감소하는 경향을 나타내었으나(P<0.05), 가용성 고형분의 변화에 직접적인 영향을 미치지 않는 것으로 나타났다. $L^*$, $a^*$, $b^*$ 값은 진피 분말의 첨가량이 증가할수록 유의적으로 증가하였다(P<0.05). 진피양갱의 경도는 진피 분말 첨가량(3~12%)에 따라 $0.08{\sim}0.16kg_f$로 유의적으로 증가하였다(P<0.05). 항산화 활성을 나타내는 총 폴리페놀 함량과 전자공여능은 진피 분말 첨가량이 증가함에 따라 유의적으로 증가하는 경향을 나타내었고(P<0.05) 상호 간에 높은 상관관계를 보였다. 전반적인 소비자 검사 결과에 의하면 양갱의 관능적 품질을 최대한 유지하면서 진피 분말의 항산화성 이점을 최대한 활용하기 위한 최적 첨가 농도범위는 3~6%가 가장 적합한 것으로 판단된다.

Keywords

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