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Characterization of Materials for Retort Processing in Oyster Porridge

레토르트 굴죽 제조를 위한 원료의 가공적성

  • 허성호 (동의공업대학 식품생명과학과) ;
  • 이호재 (동의공업대학 식품생명과학과) ;
  • 홍정화 (인제대학교 식품과학부)
  • Published : 2002.10.01

Abstract

The effect of mixing ratio of materials and their retort processing conditions on the physical properties and preference of oyster porridge were investigated. Rice gave adequate viscosity (about 800 cp) to the porridge as it was used 10~12% level and half of it was ground. Potato starch, waxy corn starch, and Perfectamyl AC showed small variation in viscosity unrelated to the temperature, that was a good condition for high quality porridge. Especially, waxy corn starch had a good property for retort porridge because its viscosity was maintained high during the processing and decreased to preferable one after processing. Purity CSC, modified starch gave gum-like texture and didn't cause water-separation much after freezing and thawing treatment of the porridge. Therefore, it was good for enhancing the physical property of the porridge as a co-additive of waxy corn starch when it was used at quarter level of waxy corn starch. Xanthan gum increased dispersibility of materials and it was useful for stabilizing physical quality of the porridge without affecting preference when it was used below 0.2% concentration. As a result, the optimal material-mixing ratio was determined as rice 10% (50% of it was ground), waxy corn starch 1.5%, Purity CSC 0.5%, xmthan gum 0.2%, salt 0.3%, and water 87.5%. Oyster's porridge, retort processed with this recipe, showed stable physical property after 6 month storage at room temperature.

레토르트 굴죽 개발을 위하여 원료의 조성 및 가공방법이 죽의 물성 및 기호도에 미치는 영향에 대하여 연구하였다. 쌀의 투입량은 10~12% 정도로 유지할 때 죽의 점도가 약 800 cp를 유지하여 적당했는데 쌀알의 안정성을 높이고 안정된 질감을 확보하기 위하여 사용한 쌀의 1/2을 마쇄하여 사용하는 것이 점도 향상 및 기호도에 유리하였다. 전분 원료 중 감자전분, 찰옥수수전분 및 Perfectamyl AC전분은 호화온도에 상관없이 거의 일정한 점도를 유지하여 작업시 온도 편차에 따른 품질 변화를 유발하지 않기 때문에 좋은 조건을 지니고 있어 레토펀트 죽의 제조에 좋은 조건을 지니고 있었으며 특히 찰옥수수전분은 살균 후 소비시에는 오히려 점도가 감소하여 일정한 점도를 유지하는 특징이 있어 레토르트 죽에 적합할 것으로 판단되었다. 변성 전분 중 Purity CSC전분은 냉-해동 후 조직 이 호화온도에 따라 묽은 풀과 같은 정도에서 순두부 정도로 나타났으며 호화 온도에 무관하게 수분분리가 적으므로 찰옥수수전분에 약 25% 정도를 혼합하여 사용할 때 좋은 물성을 유지할 수 있었다. 레토르트 굴죽의 원료 분산성을 개선하기 위하여 Kan-than gum을0.2%정도 사용하면 식감에 영향을 미치지 않고 품질 안정성을 유지할 수 있었다. 따라서 레토르트 굴죽의 최적 조성을 쌀 10%(이중 1/2은 마쇄), 찰옥수수전분 1.5%, Purity CSC 0.3%, xanthan gm, 0.2%, 식염 0.3%, 물 87.5%로 완성하였고 최적 조건 하에서 완성된 레토르트 굴죽을 상온에서 5개월 동안 저장한 후에도 안정된 물성이 확인되어 이들 원료의 가공적성이 레토르트 굴죽에 적합함을 확인하였다.

Keywords

References

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