Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Sensory Evaluation and Changes in Physicochemical Properties of Gochujang Powder with Different Drying Methods

건조방법에 따른 분말 고추장의 성분변화와 관능적 특성

  • Published : 2006.02.01
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Abstract

This study was carried out to promote aspects of preservation and convenience of red pepper paste (r.p.p.). Sample was prepared with spray drying (s.d), vacuum drying (v.d) and freeze drying (f.d) methods. The prepared powdered samples were stored for 90 days at $35^{\circ}C$ in seal condition. After powdered samples were hydrated, the samples were used for analysis such as a sensory test, texture, color and changes of component According to sensory test, quality of dried red pepper paste were better in order to f.d.r.p.p. < s.d.r.p.p. < v.d.r.p.p. Changes of pH, reducing sugar, amino nitrogen and NaCl of dried r.p.p. were not observed compared to control but viscosity decreased by about $15\%$ During the storage, acidity decreased by about $15\%$ and reducing sugar, amino nitrogen and ethanol decreased slightly. Hunter L, a and b values decreased from 24.8-27.3 to 23.6-24.4, from 10.8-12.0 to 8.3-9.3 and from 7.1-7.9 to 4.4-5.5, respectively.

고추장의 보존성, 편리성을 증진시키기 위하여 공장생산 고추장을 분무, 진공 및 동결건조하여 분말 화 한 후 수화시킨 고추장의 관능과 물성, 색도, 성분변화를 검토하였고 분말고추장을 밀봉하여 $35^{\circ}C$에서 90일간 저장하면서 저장과정 중 색도 및 성분변화를 측정하여 다음과 같은 결과를 얻었다. 관능검사 결과 건조 고추장의 품질은 동결건조 고추장이 대조구와 가장 비슷하였고 분무건조 고추장, 진공건조 고추장 순 이었다. 원료 고추장을 동결, 분무, 진공건조 하였을 때 pH, 환원당, amino nitrogea NaCl의 변화는 인정되지 않았으며 점도는 $15\%$정도 감소하였다. 저장과정 중 고추장 분말의 산도는 $15\%$ 정도 증가하였고 환원당, amino nitrogen, ethanol은 약간 감소하는 경향이었으며 Hunter L값은 24.8-27.3에서 23.6-24.4, a 값은 10.8-12.0에서 8.3-9.3, b값은 7.1-7.9에서 4.4-5.5로 저하하였다.

Keywords

References

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