Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Influence of Emulsifiers and ${\alpha}-Amylases$ on the Quality of Frozen Dough

냉동반죽의 제빵 품질특성에 미치는 유화제와 ${\alpha}-amylases$의 영향

  • Park, Bum-Joon (Department of Hotel Culinary Arts, Ulsan College) ;
  • Shin, Eon-Hwan (Department of Hotel Culinary Arts, Ulsan College) ;
  • Kim, So-Mi (Department of Biotechnology, Cheju National University) ;
  • Park, Cheon-Seok (Department of Food Science and Biotechnology and Institute of Life Science & Resources, KyungHee University)
  • 박범준 (울산과학대학 호텔조리과) ;
  • 신언한 (울산과학대학 호텔조리과) ;
  • 김소미 (제주대학교 생명자원과학대학) ;
  • 박천석 (경희대학교 식품공학과)
  • Published : 2006.02.01
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Abstract

Effects of ${\alpha}-amylases$ and emulsifiers on characteristics of frozen bread dough were examined during 12 weeks of storage. Fungal or bacterial ${\alpha}-amylase$ and various emulsifiers, including monoglyceride (MG), sodium stearoyl-2-lactylate (SSL), and diacetyltartaric acid ester of mono- and diglycerides (DATEM), were added to frozen dough individually and as mixtures Height of frozen dough at maximum development time, total volume of $CO_2$ gas, and retention volume increased with increasing content of emulsifiers. indicating addition of enzymes and emulsifiers had significant effect on flexibility of starch-gluten complex in dough. Frozen dough made with bacterial ${\alpha}-amylase$ showed slightly higher pH during storage than that of frozen dough with fungal ${\alpha}-amylase$. Bread made from frozen dough prepared with both enzymes and emulsifiers showed lower specific loaf volume than that of control during storage, whereas highest specific loaf volume was obtained with addition of fungal ${\alpha}-amylase$ with SSL+MG and bacterial ${\alpha}-amylase$ with MG.

본 연구에서는 곰팡이과 세균에서 유래된 ${\alpha}-amylase$와 유화제인 monogrlyceride(MG), sodium stearoyl-2-lactylate(SSL) 및 diacetyltartaric acid ester of mono- and diglycerides(DATEM)을 첨가하여 냉동반죽을 제조하고, 12주간 저장하면서 반죽의 rheofermentometer 특성 및 pH와 제빵시 비용적을 살펴보았다. 저장 기간이 증가할수록 효모의 불활성과 냉해동의 문제로 발효가 적게 일어났으나, 곰팡이와 세균에서 유래된 ${\alpha}-amylase$와 유화제를 첨가한 경우 감소율을 줄여 냉동반죽으로 안정성을 부여하였다. 저장기간 중 반죽의 pH변화에서는 저장기간이 길어질수록 냉동 반죽의 pH가 증가하였다. 저장기간에 따라 냉동반죽으로 제빵시 비용적에서는 곰팡이에서 유래된 효소와 유화제 SSL+MG를 혼합하였을 때와 세균에서 유래된 효소와 유화제 MG을 혼합하였을 때가 가장 큰 비용적을 보여주었고, 전체적으로 효소와 유화제 첨가구가 대조구에 비해서 빵의 비용적 감소를 줄이는 양상을 보였다.

Keywords

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