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Physicochemical Characteristics of Pumpkin(Cucurbita moschata Duch.) Powder with Different Treatment Conditions

처리 조건을 달리한 늙은호박 분말의 이화학적 특성

  • Shin, Dong-Sun (Department of Agrofood Resources, National Academy of Agricultural Science, Rural Development Adminstration) ;
  • Yoo, Yeon-Mi (Department of Agrofood Resources, National Academy of Agricultural Science, Rural Development Adminstration) ;
  • Park, Bo-Ram (Department of Agrofood Resources, National Academy of Agricultural Science, Rural Development Adminstration)
  • 신동선 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 유선미 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 박보람 (농촌진흥청 국립농업과학원 농식품자원부)
  • Received : 2013.08.16
  • Accepted : 2013.10.23
  • Published : 2013.12.31

Abstract

This study determines the processing suitability of pumpkin powder by assessing, the physicochemical properties of pumpkin powder subjected to different treatments: steaming, freezing and roasting. Pumpkin powder containing 13.61-16.05% moisture, 39.40-9.53% protein, 1.35-1.43% lipid, 0.26-0.50% ash, 5.01-5.65% yield, and 9.40-10.50 mg% sugar was used. In terms of color values, the L-value of control, a-value of the steamed sample, and b-value of the roasted sample waere the highest. The steamed sampled had the highest DPPH radical-scavenging activity. Reduction in sugar concentration varied significantly by treatments conditions (p < 0.05). Carotenoid concentration was the highest in control (19.75 mg%), followed by steamed sample (17.91 mg%), frozen sample (15.17 mg%), and the roasted sample (14.04 mg%). On the basis of these results, steamed pumpkin powder was identified as the most suited for instant processing.

본 연구에서는 저장성이 낮고 사용범위가 한정적인 늙은 호박을 이용하여 중간소재로 활용할 수 있도록 증숙, 냉동, 볶음 등의 처리 조건별로 호박분말을 제조하였으며, 제조된 호박분말의 일반성분, 수율 및 당도, 색도, DPPH 소거능, 환원당, 카로틴 등의 이화학적 특성을 조사하여 가공적성을 제시하고자 하였다. 호박 분말의 일반성분을 조사한 결과 수분이 13.61-16.05%, 조단백질이 9.40-9.53%, 조지방이 1.35-1.43%, 조회분이 0.26-0.50%, 수율은 5.01-5.65%로 나타났으며 당도는 $9.40-10.50^{\circ}Brix$로 나타났다. 색도를 측정한 결과 L값의 경우 대조군이 가장 높았고 a값은 증숙 처리군, b값은 볶음 처리군이 각각 높게 나타났다. DPPH radical 소거능에서 RC50값을 측정하였을 때 증숙 처리군에서 가장 높은 소거능을 나타내었다. 환원당 함량은 처리 조건에 따라 증숙(6.99 mg/g) > 대조구 (6.79 mg/g) > 볶음 (6.20 mg/g) > 냉동 (6.10 mg/g)으로 유의적인 차이를 보였으며 카로틴 함량은 대조구 (19.75 mg%) > 증숙 (17.91 mg%) > 냉동 (15.17 mg%) > 볶음 (14.04 mg%) 순서로 관찰되었다. 이상의 결과를 종합해 볼 때, 즉석용 호박분말을 제조하기 위해서는 증숙 처리군이 가장 좋을 것으로 보인다.

Keywords

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