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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Gelatinization Properties of Crude Starches Prepared from Acorns Harvested in Various Countries

도토리묵 제조용 조전분의 수입 원산지별 호화 특성

  • Yang, Kee-Heun (Dept. of Food & Nutrition, Chungnam National University) ;
  • You, Bo-Ram (Dept. of Food & Nutrition, Chungnam National University) ;
  • Kim, Hyo-Jin (Dept. of Food & Nutrition, Chungnam National University) ;
  • Lee, Ji-Yeon (Dept. of Food & Nutrition, Chungnam National University) ;
  • Kim, Min-Ji (Dept. of Food & Nutrition, Chungnam National University) ;
  • Kim, Mee-Ree (Dept. of Food & Nutrition, Chungnam National University)
  • 양기현 (충남대학교 식품영양학과) ;
  • 류보람 (충남대학교 식품영양학과) ;
  • 김효진 (충남대학교 식품영양학과) ;
  • 이지연 (충남대학교 식품영양학과) ;
  • 김민지 (충남대학교 식품영양학과) ;
  • 김미리 (충남대학교 식품영양학과)
  • Received : 2011.08.03
  • Accepted : 2011.08.11
  • Published : 2011.09.30
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Abstract

Gelatinization properties of crude starches from acorns harvested in various countries (domestic (KAS), Chinese (CAS), and North Korea (NAS)) were analyzed, especially blue value, amylose contents, amylogram, particle size, and SEM (scanning electron microscope). Amylose contents of NAS, KAS, and CAS were 33.65%, 32.00%, and 30.48%, respectively, and a similar tendency was observed in blue value. According to amylogram, initial paste temperature was $72^{\circ}C$ for NAS and CAS and $71^{\circ}C$ for KAS, whereas peak viscosity was 580 BU for KAS and NAS and 570 BU for CAS. The cooling viscosity and setback of NAS and CAS were higher than those of KAS. The average particle size was 23.17 microns for KAS, 23.53 microns for CAS, and 82.14 microns for NAS; particle size ranging from 5~40 microns was highly distributed in KAS (68.9%) and CAS (73.8%), whereas 57.1% distribution was observed for 5~40 microns and 27.2% for >80 microns in NAS. Gelatinization ranges of SEM photography of CAS and NAS showed a more swollen, extremely disintegrated, and folded structure than that of KAS. From these results, gelatinization properties, especially viscosity, setback of amylogram, particle size, and SEM photography, differed according to the country.

본 연구에서는 도토리묵 제조용으로 수입되고 있는 북한산, 중국산 전분과 국내산 전분에 대하여 원산지별 호화 특성을 알아보기 위해 청가, 아밀로오스 함량, 아밀로그래프 측정, 입도분포, 장방출주사전자현미경에 의한 입자형태 등을 조사하였다. 청가는 북한산($0.42{\pm}0.00$)> 중국산($0.37{\pm}0.01$)> 국내산($0.34{\pm}0.00$) 순이었고(p<0.05), 아밀로오스 함량에서는 북한산($33.65{\pm}0.47$)> 중국산($32.00{\pm}0.86$)> 국내산 ($30.48{\pm}1.21$) 순이었다(p<0.05). 아밀로그래프상에 나타난 초기호화온도는 북한산과 중국산이 $72^{\circ}C$로 같았고, 국내산은 $71^{\circ}C$이었다. 최고점도는 국내산과 북한산이 580 BU이었고 중국산은 570 BU이었다. 전분의 노화특성과 밀접한 상관관계를 나타내는 냉각점도(C)와 setback(C-P)값, total setback(C-H)값의 크기는 전분의 노화정도를 나타내는 값으로 북한산과 중국산이 국내산보다 다소 높았다. 입자분포에서는 5 미크론 이상 40 미크론 미만에서 국내산 68.9%, 중국산 73.8%를 나타낸 반면 북한산은 57.1%, 90 미크론 이상 501 미크론 미만에서의 입자가 19.1% 함유되어 있어 상당히 불균일하였다. 장방출주사전자현미경 관찰 결과 중국산과 북한산 시료에서 부분적으로 호화가 일어났다.

Keywords

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