Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Quality Characteristics and Antioxidant Activities of Yanggaeng Supplemented with Licorice Powder

감초 분말을 첨가한 양갱의 품질 특성과 항산화 활성

  • Choi, Ji Eun (Department of Food Science and Engineering, Daegu University) ;
  • Lee, Jun Ho (Department of Food Science and Engineering, Daegu University)
  • Received : 2016.03.08
  • Accepted : 2016.06.15
  • Published : 2016.07.31
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Abstract

Feasibility of incorporation of licorice powder (LP) as a value-added food ingredient into convenient food products was investigated using yanggaeng as a model system. LP was incorporated into yanggaeng at amounts of 0, 2, 4, 6, and 8% (w/w) based on total weight of cooked white beans and LP. pH level decreased while soluble solid content significantly increased with increasing levels of LP (P<0.05). In terms of color, lightness decreased while redness and yellowness increased significantly (P<0.05) with increasing levels of LP. Hardness also decreased significantly with a higher amount of LP in the formulation (P<0.05). 2,2'-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) and 2,2'-diphenyl-1-picrylhydrazyl radical scavenging activities were significantly elevated by LP addition, and they increased significantly as LP concentration increased in the formulation (P<0.05). Finally, consumer acceptance test indicated that the highest levels of LP incorporation (8%) had an adverse effect on general consumer preferences. In contrast, yanggaeng with moderate levels of LP (2%) is recommended based on its overall scores to take advantage of the antioxidant properties of LP without sacrificing consumer acceptability.

감초 분말의 첨가량을 0~8%로 달리하여 제조한 양갱의 물리 화학적 품질 특성 및 관능적 특성을 조사하였다. 감초 분말의 첨가량이 증가함에 따라 양갱의 pH는 유의적으로 감소하였으나(P<0.05), 가용성 고형분과 수분함량은 일부 첨가군 사이에 유의적 차이가 없음에도 불구하고 유의적으로 증가하는 경향을 나타내었다(P<0.05). 양갱의 경도는 감초 분말의 첨가량이 증가할수록 유의적으로 감소하였고(P<0.05), 명도($L^*$)는 연갈색을 띠는 감초 분말의 첨가량이 증가할수록 유의적으로 감소하였고, 적색도($a^*$)와 황색도($b^*$)는 유의적으로 증가하였다(P<0.05). 항산화 활성을 나타내는 DPPH와 ABTS radical 소거능은 유의적인 차이를 나타내면서 증가하는 경향을 보였으며(P<0.05), 두 지표 간 상관관계가 매우 높은 것으로 나타났다. 소비자 기호도 평가 결과 전체 평가항목에서 2% 첨가군이 유의적으로 가장 높은 기호도 평점을 얻어 양갱의 관능적 특성을 유지하면서 감초 분말의 기능적 이점을 최대한 활용하기 위한 최적의 첨가 농도는 2%로 판단된다.

Keywords

References

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