치자 추출물의 항산화능과 치자 첨가 국수의 품질특성

Antioxidative activity of Extracts from Gardenia jasminoides and Quality Characteristics of Noodle Added Gardenia jasminoides Powder

  • 김미림 (대구한의대학교 한방식품조리영양학부)
  • Kim Mi-Lim (Dept. of Herbal Food Couisine & Nutrition, Daegu Haany University)
  • 발행 : 2006.04.01

초록

본 연구는 품질 특성과 기능성을 가진 국수를 개발하기 위하여 치자 분말을 물과 70% 에탄올로 추출하여 추출물의 전자공여능, 아질산염 소거능 및 저장성을 검토하고 치자 분말을 $0{\sim}0.3%$ 첨가한 국수의 품질특성을 검토하였다. 치자 추출물의 전자공여능은 물 및 에탄올 추출물 모두에서 농도가 증가함에 따라 전자공여능도 증가하였으며 $300{\sim}1,000$ ppm 농도에서 물 추출물은 $65{\sim}86%$, 에탄올 추출물은 $69{\sim}91%$로 우수한 항산화능을 나타내었다. 치자 추출물 의 아질산염 소거능은 물 및 에탄올 추출물 모두 pH 1.2에서 가장 높았고, pH 1.2에서 물추출물과 에탄올 추출물 1,000 ppm의 아질산염 소거능은 각각 79%, 88%로서 우수한 아질산염 소거능을 나타내었다. 치자를 첨가한 국수 생면을 $5^{\circ}C$에서 4주일간 저장하였을 때 치자 첨가량이 증가할수록 총균수는 낮았으며 치자 첨가에 의하여 국수의 저장성이 향상되었다. 치자 국수의 색도 측정 결과, 적색도(a)는 치자의 첨가량이 증가할수록 감소하여 부의 수치를 나타내었으며 건면보다는 삶은 면에서 더 큰 폭으로 감소하였다. 황색도(b)는 건면과 삶은 면 모두 치자의 첨가 농도에 비례하여 유의적으로 증가하였다(p<0.05). 치자 국수의 건면과 삶은 면의 관능검사 결과, 색, 향, 맛과 종합적인 기호도에서 0.2와 0.3% 첨가 국수가 가장 높은 기호도를 나타내어 치자 국수 제조시에 치자분말의 최적 첨가농도는 0.2-0.3%가 바람직할 것으로 판단된다.

This study investigated the development of increased health promotion and higher quality of Gardenia jasminoides noodles. Gardenia jasminoides powder was extracted with water and 70% ethanol, after which their electron donating ability (EDA) and nitrite scavenging ability (NSA) were tested. EDA at $300{\sim}1,000$ ppm of water extract ranged from 65% to 86% and that of ethanol extract from 69% to 91%. NSA of water extract was 79% and ethanol extract was 88% at 1,000 ppm both peaked at pH 1.2. NSA was increased with increasing concentration of extracts and decreasing pH. The quality characteristics of Gardenia jasminoides noodles were evaluated by shelf life, color and sensory evaluation. Total viable cells in Gardenia jasminoides noodles during storage at 5? were $0.2{\sim}0.3$ log cycles, which were lower than those of the control and the shelf-life was expanded. Redness (a) of the dried and cooked noodles was decreased with increasing Gardenia jasminoides concentration (p<0.05). Yellowness (b) of the noodles was increased with increasing Gardenia jasminoides concentration in both the dried and cooked noodles. In sensory evaluation, dried and cooked noodles with $0.2{\sim}0.3%$ Gardenia jasminoides powder d significantly higher scores in overall acceptability(p<0.05).

키워드

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