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현미(고아미) 알코올발효 부산물의 α-amylase처리 효과

Effect of α-Amylase Treatment of Brown Rice(Goami) Alcohol Fermentation By-Product

김태영|김미현|김상범|우상철|여수환|우승미|정용진
한국식품저장유통학회 (The Korean Society of Food Preservation)|2007.12|Food Science and Preservation|제14권 제6호|pp. 617-623

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참고문헌

주제분류식품과학

초록

현미(고아미) 비열처리 알코올발효 부산물을 식품소재로 활용하고자 α-amylase처리조건에 따른 품질특성 변화를 조사하였다. 그 결과, 가수분해 온도에 따른 고아미 부산물의 가용성 고형분, 총식이섬유소 및 총당은 온도가 높을수록 증가하였으며, 환원당은 80℃에서 가장 높게 나타났다. 가수분해 온도 70℃이상에서는 유리아미노산이 점차 감소하는 경향이었으며, 올리고당은 80℃에서 가수분해 하였을 때 가장 많이 검출되었다. α-amylase 농도에 따른 가용성 고형분은 효소제 농도가 높을수록 함량이 증가하였고 총식이섬유소는 약 0.65%로 비슷하게 나타났다. 환원당은 효소제 농도 0.08%(v/w)전후에서 높은 함량을 나타내었다. 총당 및 올리고당은 효소제 농도가 높을수록 증가하는 경향이었으며, 올리고당은 효소제 농도 0.10%(v/w)이상에서는 비슷한 함량을 나타내었다. 가수분해 시간에 따른 가용성 고형분 및 총식이섬유소는 60분 이상에서 각각 약 6.65 및 0.65%로 나타났으며, 환원당 및 총당은 모든 처리구에서 각각 약 3,600 및 4,800 mg%로 나타나 가수분해 시간에 따른 큰 차이는 없었다. 올리고당은 가수분해 시간이 경과할수록 증가하였으며 90분 이상에서는 약 2,100 mg%로 비슷한 함량을 나타내었다. 이상의 결과, 고아미 부산물은 α-amylase 0.10%(v/w)를 첨가하여 80℃에서 90분간 가수분해하였을 때 식이섬유소 및 올리고당 함량이 가장 높은 것으로 나타나 식품소재로의 다양한 활용이 기대되었다.

Abstract

To utilize the non-heat treated alcoholic by-products of brown rice(Goami) as food sources, the quality characteristics change according to the treatment conditions of α-amylase were evaluated. It resulted that the increase of hydrolysis temperature correspondingly increased the soluble solids, total dietary fiber and total sugar in the by-products of Goami, and the highest reducing sugar content was observed at 80℃. The free amino acids contents were tended to slowly decrease by the hydrolysis temperature more than 70℃, and the highest content of oligosaccharides were detected at the hydrolysis temperature of 80℃. The soluble solid according to the α-amylase concentration resulted to increase with the increase of the enzyme concentration and the total dietary fiber revealed similarly showing approximately 0.65%. The high content of reducing sugars was observed at the enzyme concentration around 0.08%(v/w). Total sugars and oligosaccharides contents tend to increase as the concentration of enzyme increased, and the content of oligosaccharides acquired at the enzyme concentration more than 0.10%(v/w) maintained to show rather similar contents. The soluble solids and total dietary fiber by hydrolysis time were found to show 6.66% and 0.65%, respectively at more than 60 min of hydrolysis, and the reducing sugars and total sugars were found to be 3,600 and 4,800 mg% in all treatment groups showing no significant difference. The content of oligosaccharides was increased with the increase of hydrolysis time, and the content was similar at more than 90 min of hydrolysis by ranging around 2,100 mg%. Based upon these results, the by-products of Goami are expected to be used as various food sources showing the highest dietary fiber and oligosaccharides contents by the hydrolysis at 80℃ for 90 min with the addition of 0.10%(v/w) of α-amylase.

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