Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Quality Characteristics of White Bread Added with Chlorella powder

클로렐라를 첨가한 식빵의 품질특성

  • Jeong Chang-Ho (Division of Applied Life Sciences, Graduate School, Institute of Agricultural & Sciences, Gyeongsang National University) ;
  • Cho Hyun-Jae (Division of Applied Life Sciences, Graduate School, Institute of Agricultural & Sciences, Gyeongsang National University) ;
  • Shim Ki-Hwan (Division of Applied Life Sciences, Graduate School, Institute of Agricultural & Sciences, Gyeongsang National University)
  • 정창호 (경상대학교 대학원 응용생명과학부 농업생명과학연구원) ;
  • 조현제 (경상대학교 대학원 응용생명과학부 농업생명과학연구원) ;
  • 심기환 (경상대학교 대학원 응용생명과학부 농업생명과학연구원)
  • Published : 2006.08.01
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Abstract

The chemical components of chlorella powder and quality characteristics (texture, color and sensory evaluation etc.) of white bread added with chlorella powder in order to use as a new functional food material of chlorella powder were examined. The proximate composition was composed of crude protein 61.45%, crude fiber 13.47%, nitrogen free extract 13.15%, ash 6.35%, moisture 3.27% and crude fat 2.31%, respectively. The component of major minerals were P (1,478.94 mg%), K (250.54 mg%), Ca (147.24 mg%) and Na (107.26 mg%) and free sugar was composed of maltose 0.12%, glucose 0.09% and fructose 0.08%. The major amino acids of chlorella powder were glutamic acid(4,009.20 mg%), aspartic acid(3,017.72 mg%), proline(3,055.24 mg%), methionine(3,001.52 mg%) and histidine(2,951.06 mg%). The major fatty acids in chlorella powder were composed of linoleic acid and the amounts of those showed 34.27%. The volume tended to increase according to the addition of chlorella powder. Substituting chlorella powder with flour also resulted in decreased lightness, redness and yellowness of the white bread crust The color of white bread crust became darker as the amount of chlorella powder increased. The texture characteristics of white bread containing chlorella powder was no significant difference. The result of sensory evaluation by QDA (quantitative descriptive analysis) showed that overall acceptability of white broads containing 0.2% chlorella powder were higher than that of control without chlorella powder.

클로렐라를 새로운 기능성 식품의 재료로 사용하기 위하여 클로렐라 분말의 화학성분 분석 및 클로렐라 분말을 첨가한 식빵을 제조하여 품질특성을 조사하였다. 클로렐라의 화학성분을 분석한 결과 단백질이 61.45%로 가장 많은 함량을 나타내었으며, 조섬유, 가용성 무질소물 및 회분순으로 나타났다. 무기성분을 분석한 결과 주된 무기성분은 P, K Ca 및 Na로 나타났으며, 그 중 P이 1,478.94 mg%로 가장 많은 함량을 나타났다. 유리당을 분석한 결과 클로렐라에는 sucrose, glucose, fructose 및 maltose 등 총 4종류의 유리당이 함유되어 있었으며, 그 중 maltose가 0.12%로 가장 높게 나타났다. 아미노산을 분석한 결과 총 17종의 아미노산이 분리, 동정되었으며, 총 아미노산은 37,425.11 mg%로 나타났고, 그 중 aspartic acid, glutamic acid, proline, methionine 및 histidine이 주요 아미노산으로 나타났으며, glutamic acid가 4,009.20 mg%로 가장 높게 나타났다. 지방산 조성을 분석한 결과 불포화지방산이 전체지방산의 68.87%를 차지하였으며, 그 중 linoleic acid가 34.27%로 가장 높게 나타났다. 클로렐라를 첨가하여 제조한 반죽을 발효시간 경과에 따른 부피 변화를 측정한 결과 발효시간이 경과함에 따라 반죽의 부피가 증가하는 경향을 나타내었으나 대조구와 비교하여 클로렐라 분말의 첨가량이 증가함에 따라 부피가 증가하는 경향을 나타내었다. 식빵의 crust와 crumb의 색도는 클로렐라의 첨가량이 증가함에 따라 밝기를 나타내는 L값과 적색도를 나타내는 a값은 crust와 crumb 모두 감소하는 경향을 나타내었으며, 황색도를 나타내는 b값의 경우 crust는 감소하였고, crumb는 증가하는 것으로 나타났다. 클로렐라 분말을 첨가한 식빵의 조직감은 유의적인 차이를 보이지 않았으며, 관능검사를 실시한 결과 전체적인 기호도에서 클로렐라 분말을 0.2% 첨가한 시료에서 가장 좋은 기호도를 나타내었다.

Keywords

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