Quality Characteristics and Antioxidant Activities of Black Garlic Jam Prepared with Fructooligosaccharide

프락토올리고당 첨가 흑마늘 잼의 품질 특성 및 항산화성

  • Kim, Min-Hee (Department of Food & Nutrition, Chungnam National University) ;
  • Kim, Sung-Min (Department of Culinary Art, Woosong University) ;
  • Kim, Mee-Ree (Department of Food & Nutrition, Chungnam National University)
  • 김민희 (충남대학교 식품영양학과) ;
  • 김성민 (우송대학교 외식조리학과) ;
  • 김미리 (충남대학교 식품영양학과)
  • Received : 2010.10.01
  • Accepted : 2010.12.02
  • Published : 2010.12.31

Abstract

The quality characteristics and antioxidant activities were evaluated for jams containing fructooligosaccharide (FTO) and FTOS (sucrose 50%+FTO 50%) substituted for sucrose. The endpoint of jam preparation was determined to be sweetness of $64^{\circ}Brix$. Moisture contents differed among the treatments, whereas acidity did not. Reducing sugar content and viscosity were highest in the FTO (0.144%, 126,800 cP), and the lowest in control (0.074%, 101,600 cP). Lightness (L value), redness (a value), and yellowness (b value) values of the Hunter color system were highest in the FTO sample. Hardness and springiness of textural properties were the highest in the FTO sample as well. Antioxidant activities were the highest in the FTO sample with the lowest $IC_50$ values (42.3 mg/g for DPPH and 22.4 mg/g for hydroxyl radical scavenging activities). Total phenolic content was the highest in the FTO sample among all treatments. The overall acceptance score of black garlic jam containing FTO was the highest. Based on these results, it is suggested that FTO was appropriate for achieving good qualities such as antioxidative activity in black garlic jam.

마늘을 고온에서 장시간 저장 및 숙성시켜 제조한 흑마늘로 잼을 만들어 품질 특성을 알아보았다. 산도는 대조군과 FTOS 첨가군이 가장 높았으며, 유의적인 차이가 없었다. 환원당 함량은 FTO 첨가군이 가장 높았고, 다음으로 FTOS 첨가군이었다. 점도는FTO 첨가군이 가장높고, 그 다음으로 FTOS 첨가군이었고, 대조군은 가장 낮았다. 색도는 명도는 FTO 첨가군이 가장 높았고, FTOS 첨가군이 가장 낮았으며 유의적인 차이를 나타내었다. 적색도는 FTO 첨가군이 가장 높았고, FTOS 첨가군이 가장 낮았으며 유의적이 차이를 나타내었다. 황색도는 FTO 첨가군이 가장 높았다. 기계적인 조직감은 경도, 탄력성은 FTO 첨가군이 가장 높았고, 대조군이 가장 낮았다. 항산화 실험 결과 중, DPPH radical 소거능은 모든 군이 대조군에 비해 $IC_50$ 값이 낮게 나타났고, FTO 첨가군이 가장 작은 값을 나타내어 항산화능이 가장 좋게 평가되었다. Hydroxy radical 소거능 역시 모든 군이 대조군에 비해 $IC_50$ 값이 낮게 나타났고, FTO 첨가군이 가장 작은 값을 나타내어 항산화능이 가장 좋게 평가되었다. Total phenol 함량 측정 결과, FTO 첨가군이 가장 높은 값을 나타났고, 모든 군이 대조군에 비해 Total phenol 함량이 높게 나타났다. 관능검사에서 강도 특성 및 수용도 평가 결과, 전반적인 수용도 및 구입의사에서 FTO 첨가군이 높은 점수를 받아 잼 제조 시 설탕을 넣거나 설탕과 올리고당을 혼합하여 흑마늘 잼을 제조하는 것보다 프락토올리고당을 대체할 때 관능적으로 가장 좋다고 사료된다. 이와 같은 결과를 종합해 보면 프락토올리고당 첨가가 흑마늘잼 제조 시 적합한 것으로 사료된다.

Keywords

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