Journal of the East Asian Society of Dietary Life (동아시아식생활학회지)

The East Asian Society of Dietary Life (동아시아식생활학회)
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Effect of Calcium Lactate Prepared from Black Snail on Dough Fermentation, Quality and Shelf-life of Bread

다슬기로 제조한 칼슘 락테이트가 반죽의 발효와 빵의 품질 및 저장성에 미치는 영향

  • 이예경 (대구가톨릭대학교 식품산업학부) ;
  • 이명예 (대구가톨릭대학교 식품산업학부) ;
  • 김순동 (대구가톨릭대학교 식품산업학부)
  • Published : 2003.02.01
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Abstract

This study was conducted to investigate the effect of 0.5% calcium lactate(CaL) on the fermentation of dough and quality and shelf-life of bread. Calcium lactates(CaL-A and CaL-P) were prepared from ash of black snail which contained shell and tissue together(ABS) and powder of the snail(PSB). pH of dough with the CaLs were higher than that of the control md, volume of the dough, loaf volume of bread were lower than those of the control products. But the volumes were almost the same when the pH of the dough were adjusted to pH 5.5. Mean calcium contents of treated bread (39.36~49.70 mg/100 g) were higher than that of control products(13.43 mg/100 g). There was no difference in Hunter $L^{*}$, $a^{*}$, $b^{*}$ values between the control and the treated group. Hardness and gumminess of CaL-A treated bread were the highest, but springiness and cohesiveness were the lowest. All the attributes showed no difference in case of pH adjustment(pH 5.5). The smaller pore and larger air cell with rough surface were observed in the CaL treated bread by SEM analysis. Sensory scores of CaL treated bread showed relatively lower values than those of the control products, but the scores increased by pH adjustment. The shelf-life of bread with CaL-P and CaL-A at 2$0^{\circ}C$ were 4 and 3 days, respectively, while that of the control group 1 day.day.y.

다슬기분말(PBS)과 그 회분(ABS)으로 제조한 칼슘락테이트(CaL-A및 CaL-P를 0.5%되게 첨가한 반죽의 발효와 빵의 품질 및 저장성에 미치는 영향을 조사하였다. 칼슘락테이트를 첨가하여 1차발효시킨 후 반죽의 pH는 5.98~5.86으로 대조군의 5.50보다 높았다. 반죽의 부피와 빵의 loaf volume index는 CaL-A 첨가군이 대조군 보다 현저하게 낮았으나 pH를 5.5로 조정한 후의 반죽부피와 빵의 loaf volume은 대조군과 비슷하였다. 처리군의 칼슘함량은 39.36~49.70 mg/100 g으로 대조군(13.43 mg/100 g)보다 현저하게 높았다. 처리군 빵의 색상은 대조군과 유의적인 차이가 없었다. 빵의 경도와 점착성은 CaL-A 첨가군이 대조군에 비해 높고, 탄력성과 응집성은 낮았으나 pH를 5.5로 조정한 경우는 유의적인 차이가 없었다. 처리군 빵의 현미경 관찰결과 대조군에 비하여 기공이 작고 air cell이 크며 표면이 거칠었다. 맛, 색상, 냄새 및 종합적인 기호도를 평가한 결과 대조군>CaL-A>CaL-P 순으로 첨가군의 관능적 품질이 낮았다. 그러나 pH를 5.5로 조정하여 제조한 빵에서는 종합적인 기호도가 크게 향상되었다. 칼슘락테이트를 첨가한 빵은 곰팡이 발생이 지연되었으며 곰팡이의 발생정도로 평가한 2$0^{\circ}C$에성의 저장수명은 대조군이 1, CaL-A 첨가군 3일, CaL-P 첨가군은 5일이었다.

Keywords

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