Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Quality Characteristics of Gangjung Made of Different Varieties of Waxy Rice

찹쌀 품종별 강정 제조 특성

  • Kim, Kyung-Mi (Department of Agrofood Resources, National Academy of Agricultural Science, Rural Development Administration) ;
  • Lee, Ji-Hyun (Department of Agrofood Resources, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Haeng-Ran (Department of Agrofood Resources, National Academy of Agricultural Science, Rural Development Administration)
  • 김경미 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 이지현 (농촌진흥청 국립농업과학원 농식품자원부) ;
  • 김행란 (농촌진흥청 국립농업과학원 농식품자원부)
  • Received : 2009.10.19
  • Accepted : 2010.01.16
  • Published : 2010.04.30
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Abstract

Differences in physiochemical characteristics of row waxy rice, steeped in optimum steeping conditions ($31.5^{\circ}C$, 9 days) were investigated along with the relationship between these properties and the quality characteristics of Gangjung made from ten different varieties of waxy rice in order to identify the optimal waxy rice variety for making Gangjung. The moisture content of ten waxy rice varieties was increased, but protein and ash contents were decreased during steeping. Mineral analysis, showed that the Fe, Mg, Ca, Na and K contents of all samples were decreased during steeping. Regarding the gelatinization behavior of the ten waxy rice varieties, the peak viscosity and breakdown were increased with the exception of Backjinju and Backjinju-1 during steeping. Shinsunchalbyeo was the most adaptable waxy rice variety for making Gangjung, as its tested scores for expansion ratio and crispness were higher than other waxy rice varieties. The textural properties of Gangjung made from Backjinju and Backjinju-1 had the highest levels of hardness and showed the lowest expansion ratios. Therefore, Backjinju and Backjinju-1 are considered the worst varieties for making Gangjung.

강정 제조용 최적 찹쌀 품종을 선정을 위해서 찹쌀 10품종의 원료찹쌀과 최적조건 수침찹쌀의 이화학적 특성과 강정의 팽화율, 유지흡수율, 색도, 조직감 등을 분석하였다. 이러한 결과를 주성분분석하여 강정과 이화학적 특성과의 관계를 해석하였다. 품종별 원료찹쌀의 수분함량은 10.8-12.7% 수준이었으며 단백질 함량은 백운찰벼가 9.2%로 가장 높았고 최고점도, breakdown, setback은 백진주벼와 백진주벼1호가 가장 높았다. 최적조건 수침찹쌀($31.5^{\circ}C$, 9일)의 수분함량은 한강찰벼가 가장 높았고 백운찰벼가 가장 낮았으며 단백질 함량은 시료간의 유의적 차이가 없었다. 최고점도와 breakdown은 밀양225호가 가장 높았고 백진주벼가 가장 낮았으며 setback은 백진주벼1호가 가장 높았으며 동진 찰벼, 화선찰벼, 신선찰벼가 가장 낮았다. 원료찹쌀을 수침 시 수분은 증가하였고 단백질, 회분, 무기질은 대부분 감소하였으며 최고점도와 breakdown은 백진주벼와 백진주벼1호를 제외하고는 증가한 반면에 setback은 모든 품종이 감소하였다. 찹쌀 품종별 강정 제조 시 팽화율이 크고 부드럽고 아삭한 강정 제조가 가능한 최적 품종은 신선찰벼, 동진찰벼, 한강찰벼, 백운찰벼, 화선찰벼, 밀양210호, 밀양225호, 상남밭벼 순이었다. 반면 팽화가 잘 일어나지 않고 단단한 조직감을 지닌 백진주벼와 백진주벼1호는 강정 제조용으로 부적합한 품종이었다.

Keywords

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