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Investigation for Processing Conditions of Porridge with Addition of Ramie Leaf (Boehmeria nivea L) Powder Using a Response Surface Methodology

반응표면 분석법을 이용한 모시분말 첨가 비단죽 제조조건 조사

  • Lee, Young-Tack (Department of Food Science & Biotechnology, Gachon University) ;
  • Im, Ji-Soon (Department of Food Science & Biotechnology, Konyang University)
  • 이영택 (가천대학교 식품생물공학과) ;
  • 임지순 (건양대학교 식품생명공학과)
  • Received : 2012.10.15
  • Accepted : 2012.11.22
  • Published : 2012.12.30

Abstract

Response surface methodology was applied to the processing conditions to investigate the physicochemical properties of ramie porridge. In the processing conditions based on the central composite design with the addition of ramie leaf powder (0-4 g) and water (700-1100 g), the coefficients of determination (R2) of the models were above 0.9141 for the physicochemical properties, above 0.7627 for the Hunter color parameters, and above 0.8975 for the rheological properties. The soluble solid content, viscosity, and gumminess of the sample decreased significantly with an increase in the water added, whereas the spreadability and adhesiveness increased significantly. The Hunter color L value of the sample decreased significantly with an increase in the amount of ramie leaf powder added, whereas the Hunter b value increased significantly. The estimated maximum viscosity of the ramie porridge was shown to be 24,643 cp when 1.90 g ramie leaf powder and 700.24 g water were added; the estimated maximum lightness of the ramie porridge was shown to be 59.11 when 0.02 g ramie leaf powder and 869.30 g water were added; and the estimated maximum gumminess of the ramie porridge was shown to be 21.46 g when 2.12 g ramie leaf powder and 700.35 g water were added.

모시죽의 가용성 고형물 함량은 7.40-11.60 brix, pH는 6.0-6.6 사이에서 변화하는 것을 알 수 있었다. 모시죽의 amylose함량은 가수량에 의해 유의적인 영향을 받았으며 가수량이 증가할수록 현저하게 감소하는 것으로 나타났다. 점성은 가수량이 증가할수록 급격하게 떨어지는 것을 보여 주었으나, 모시분말은 죽의 점성 특성에 영향을 미치지 못하였다. 퍼짐성은 가수량이 증가할수록 현저하게 증가하는 경향을 보여주었으며, 이는 점성이 증가할수록 퍼짐성은 떨어진다는 사실과 일치된 결과를 보여주었다. 모시 첨가량이 증가할수록 밝기는 현격히 감소하는 것으로 조사되었으며 가수량의 변화는 밝기에 거의 영향이 없는 것으로 나타났다. 모시분말 첨가량은 적색도를 감소시키는 것으로 조사되었으나 황색도는 모시분말 첨가비를 증가시킬수록 크게 증가하는 것으로 나타났다. 모시죽의 제조조건에서 가수량은 물성특성에 모두 유의적으로 영향을 미치는 것으로 분석되었으나 모시분말 첨가비율은 유의성이 인정되지 않아 설정된 범위 내에서는 물성에 대한 영향이 크지 않는 것으로 평가되었다.

Keywords

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