• 한국식품영양학회지
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• 제28권6호
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• pp.1011-1018
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• 2015

The effects of mixing speed (3, 6 and 10 speed) and time (2, 5 and 10 min) on the dynamic viscoelasticity of dough and the baking properties of gluten-free rice bread were investigated. The specific gravity of the dough was not affected by the mixing speed and time before and after fermentation. The elasticity (G') and viscosity (G") of the dough increased and the tan ${\delta}$ (G"/G') decreased with higher mixing speeds and longer mixing times. The specific volume of the gluten-free rice bread was affected by the mixing time in response surface methodology (RSM). The hardness of the gluten-free rice bread showed a decreasing trend as the specific volume for the gluten-free rice bread increased. The appearance of the gluten-free rice bread was symmetrical at high mixing speeds and long mixing times. Overall results indicated that the quality of gluten-free rice bread could be improved by controlling the mixing speeds and mixing times for the dough.

• 한국식품영양학회지
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• 제28권4호
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• pp.586-593
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• 2015

The baking properties of gluten-free rice bread with different percentages of corn starch and waxy corn starch were investigated. The specific gravity and color (L, a, b) of the dough as well as the appearance, color (L, a, b) and texture of the rice bread were analyzed. Replacement of rice flour with 1, 2.5, 5, 7.5 and 10% corn starch did not have a significant effect on the specific gravity and color of the dough. The volume and specific volume of the rice bread showed an increasing trend as the amount of added corn starch increased. The chewiness, gumminess and hardness of the rice bread showed a decreasing trend as the amount of added corn starch increased. Replacement of rice flour with 1, 5 and 10% waxy corn starch did not have a significant effect on the specific gravity and color of the dough. The color of the rice bread showed an increasing trend as the amount of added waxy corn starch increased. These results suggest that replacement of rice flour with 7.5% corn starch or 1% waxy corn starch is effective for gluten-free rice bread.

• 한국조리학회지
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• 제7권1호
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• pp.91-105
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• 2001

Chou-cream bread and Red bean paste bread were made by sponge & dough method with the sweet dough formula. The bread quality was studied by the measurements of the temperature variation, the fermentation level of frozen dough in the special condition(dough conditioner of 5$^{\circ}C$, 10$^{\circ}C$, 15$^{\circ}C$, 20$^{\circ}C$ and 30$^{\circ}C$), the product volume and thesensory evaluation with frozen dough thawed, fermented and baked. When thawing temperature was low, the core temperature of frozen dough increased slowly and the time for thawing and fermentationwas long. In thawing and fermentation, the core temperature of Red bean paste dough increased faster than that of Chou-cream dough. When the thawing conditions of dough conditioner(retarder) were 20$^{\circ}C$ and 30$^{\circ}C$, the level of total time decrease for thawing and fermentation was 55 and 86 min in Chou-cream dough and 62 and 90 min in Red bean paste dough respectively in comparison to dough conditioner of 5$^{\circ}C$. In volume of baked products, they showed no significant difference for three weeks of storage, but slight difference for four weeks of storage. The result was that Chou-cream bread was larger than Red bean paste bread in the decrease of volume. In sensory evaluation, the bread quality became low according to the time. When stored for four weeks in the freezer, significant differences were found in Chou-cream vread, but slight difference appeared in Red bean paste bread. The research identified that Red bean paste dough was more effective in manufacturing time than that of Chou-cream dough, when thawing temperature was high, and if frozen dough was thawed in the retarder of lower than 20$^{\circ}C$, the bread quality in terms of volume and sensory evaluation had no significant difference in comparison to the none-freezing Red bean paste bread.

• 생명과학회지
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• 제20권2호
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• pp.197-201
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• 2010

빵에 국화를 첨가할 수 있는지에 대한 기초연구를 수행하기 위해 국화분말을 각각 0%, 3%, 5%, 7% 첨가한 식빵을 제조하여 제빵의 과정뿐만 아니라 저장기간에 따른 품질변화를 관찰하였다. 그 결과, 국화의 첨가에 따라 제빵시간이 총 9~23분 더 길어진 반면 mixing time은 1~2분 더 짧아졌다. 또 국화를 첨가할수록 무첨가 시료에 비해 구운 후 빵의 무게는 증가한 반면 비용적은 감소하였다. 경도는 국화의 첨가량에 따라 증가하였으며 빵의 고형물함량에는 큰 차이가 없었다. 국화분말을 첨가한 빵의 pH는 무첨가 시료에 비해 약 0.33 정도 낮아졌으며 저장중의 변화는 거의 관찰되지 않았다. 또 색도를 측정한 결과 국화의 첨가량이 증가할수록 명도(L값)는 낮게 나타났으며, 적색도(a값)와 황색도(b값)는 높게 나타났다. 관능평가 결과 향과 경도, 그리고 촉촉한 정도는 모든 실험군에서 큰 차이를 보이지 않았으나 종합적인 기호도의 경우 무첨가 시료가 가장 우수한 값을 나타냈으며 국화분말의 첨가량이 많을수록 낮아지는 경향을 보였다. 또 저장기간에 따라 모든 실험군의 종합적인 기호도는 감소하였는데 특히 국화분말의 첨가량이 적을수록 종합적인 기호도의 감소폭은 크게 나타났다. 따라서 빵에 국화를 첨가하는 것은 빵의 풍미유지에 도움을 주는 것으로 판단된다.

• 한국지역사회생활과학회지
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• 제26권3호
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• pp.447-456
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• 2015

To develop functional bread and improve the quality of gluten-free bread, this study investigates the quality characteristics of gluten-free rice bread made from soft-type rice (Bodeurami) flour mixed with black rice at different levels (0%, 10%, 20%, 30%, and 40%, w/w). An increase in the mix level of black-rice flour increased the weight of rice bread but reduced its volume, baking loss, volume expansion, and specific volume. The results for Hunter's color value and texture measurements indicate that an increase in the content of black-rice flour reduced the L-value, the b-value, hardness, gumminess, and chewiness but increased the a-value, adhesiveness, and springiness. According to the sensory analysis, rice bread formulated with a mixture of soft-type rice flour (80%) and black-rice flour (20%) showed the highest scores in color, taste, texture, and overall preferences. With respect to flavor and appearance, bread samples with 20% and 30% black-rice flour were preferred to those with 0%, 10%, and 40% black-rice flour. These results suggest that gluten-free rice bread mixed with wet-milling rice flour and black-rice flour can be used to develop functional and gluten-free bread.

• 한국조리학회지
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• 제23권4호
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• pp.56-65
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• 2017

This study investigated quality characteristics of sourdough bread using fermented fig. Bread containing sourdough, compared with control group, showed high inclination in moisture content. Sample with 20% of sourdough was the highest, and sample with 40% of sourdough was the lowest. There was a significant difference among samples. As for appearance and cross structure of sourdough bread with fermented fig, there was an inclination that the bigger sourdough bread is, the bigger cell is and the more even its structure is. As for the chromaticity, sample with 20% of sourdough showed the lowest value of L and value of b. Value of L and b got lower as its volume got bigger. Value of a, on the one hand, showed no fixed inclination. As for textural characteristics, sourdough bread showed lower hardness, cohesiveness, and gumminess, and higher springiness and cohesiveness than control group. There were significant differences among all items, but there was no significant difference in hardness, springiness, cohesiveness, and gumminess among samples. Changes in result of sensory analysis suggested that sample with 20% of sourdough showed the highest overall preference including color, flavor, taste, and appearance. On the other hand, sample with 40% of sourdough showed the lowest overall preference. Considering preference through sensory analysis and quality characteristics of sourdough bread with fermented fig, therefore, it seemed that sourdough bread with 20% of sourdough had the best characteristics.

• 한국식품영양학회지
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• 제33권6호
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• pp.599-613
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• 2020

The purpose of this study was to evaluate the quality characteristics of white pan bread added with wheat sprout powder without treatment (WP) and wheat sprout powder with only enzyme treatment (WPE), only lactic acid bacteria treatment (WPL) and enzyme and lactic acid bacteria treatment (WPE&L). The three different powder concentration levels of 1%, 3%, and 5% were added to flour to produce the white pan bread. The bread volume and specific volume of the WPE&L group were the highest among all the addition groups. The bread weight, a-value, and b-value of the WP group was highest among all the addition groups, but the bread baking loss and the L-value of the WP group was the lowest among all the addition groups. The texture measurements indicated that the hardness, gumminess, and chewiness values of the bread were the highest in the WP group. The sensory evaluation test showed that bread in the WPE&L group with 3% wheat sprout powder was the best among all the samples studied. Based on our findings, we suggest that the enzyme and lactic acid bacteria pretreated wheat sprout powder is an effective ingredient for improving the overall quality of white pan bread.

• 한국식품저장유통학회지
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• 제18권1호
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• pp.91-97
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• 2011

상업적 복합균주와 효모를 sourdough starter로 사용하여V5가지의 시료를 다음과 같이 준비하였다. 제빵용 효모만을V사용한 control군, 상업용 복합균주를 사용한 LAB 1군, 상업용 복합균주와 효모로 각각 발효한 후 합친 LAB 2군, 상업용 복합균주와 효모를 함께 사용하여 발효한 LAB 3군, 상업용 복합균주와 효모를 사용하여 각각 발효하여 합친 후 다시 10시간 발효한 LAB 4군을 사용하여 제조한 발효식빵의 제빵특성은 다음과 같다. CrumbScan에 의한 영상분석의 결과로 LAB 4의 부피가 2,140 cc로 가장 큰 것으로 발효율이 가장 높았던 LAB 4의 부피가 가장 크게 나타났다. 기공의 조밀도는 부피가 가장 큰 LAB 4가 806로 가장 낮게 나타났고, 기공의 찌그러짐 정도는 기공의 조밀도가 가장 높았던 LAB 1이 1.56으로 가장 높은 것으로 나타났다. 껍질의 두께는 대조구가 가장 얇았고 LAB 4가 가장 두껍게 나타나 유의적인 차이를 보였다. Sourdough bread의 비용적의 측정결과는 발효율이 가장 높았던 LAB 4의 비용적은 5.14 mL/g으로 가장 높게 나타났다. Firmness 측정결과는 93.2 g인 대조구에 비해 LAB 2, LAB 3과 LAB 4에서의 firmness 측정치는 각각 113.67, 111.97, 113.50 g로 높게 나타났다. 관능검사 결과에서 식빵의 내부색은 전반적으로 밝게 평가되었으며, LAB 4의 기공이 가장 균일한 것으로 나타났고 촉감도 가장 부드러운 것으로 평가되었고, 전체적인 품질평가에서도 3.7을 나타내어 가장 선호하는 것으로 나타났다. 결과적으로 대부분의 평가항목에서 LAB 4로 만든 sourdough bread를 선호하는 것으로 나타났다.

• 한국식품영양과학회지
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• 제36권5호
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• pp.616-621
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• 2007

찐빵의 저장성을 향상시키고자 제조시 솔잎발효액을 설탕 대용으로 사용하여 반죽을 제조하고 발효하여 찐빵을 가공하였다. 솔잎 발효액의 양을 반죽의 가용성 고형분에 기준하여 밀가루 대비 8.3%, 11%, 18%로 첨가하여 반죽의 특성을 살펴보고, 제조된 찐빵의 저장 중 품질을 측정하였다. 대조구를 포함한 처리구의 반죽은 pH $5.45{\sim}5.90$, 수분활성도 $0.94{\sim}0.96$의 범위를 유지하여 적절한 효모발효에 적당한 수준에 있었고 적절한 경도를 보여주었다. 솔잎 추출액의 첨가는 찐빵의 부피와 비용적을 20% 이상 증가시키는 데에 긍정적으로 기여하였다. 솔잎 추출액이 많이 첨가되면 저장 중 찐빵의 경도 증가가 지연되어서 노화가 억제됨을 알 수 있었다. 11% 이상의 함량으로 솔잎 추출액을 많이 첨가하면 관능적 품질에서 초기에 솔잎향으로 인하여 약간의 거부감이 있었으나, 저장 2일 후에는 오히려 긍정적으로 나타났다. 또 솔잎 추출물이 첨가된 찐빵은 표면의 세균 및 곰팡이의 성장이 억제되어서(저장 4일에 대수값으로 $0.8{\sim}2.4$) 저장성 향상과 저장수명의 효과를 얻을 수 있었다.

• 생명과학회지
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• 제19권6호
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• pp.781-786
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• 2009

양파즙을 추출하여 수분과 설탕비를 맞추어 수분함량대비 0%, 3%, 6%, 9%, 12%, 15%를 첨가하여 식빵을 제조하였다. 식빵의 무게, 부피 및 비용적은 양파즙 첨가량이 증가할수록 증가하였고, 굽기손실율은 양파즙 첨가량이 증가할수록 낮아졌다. 색도를 측정한 결과 양파즙 첨가량이 증가할수록 백색도(L 값)는 낮게 나타났으며, 적색도 (a값)와 황색도 (b값)는 양파즙 첨가량이 많을수록 높게 나타났다. 양파즙 첨가 식빵의 pH 결과는 저장 기간 동안 감소하였으며, 무첨가군이 가장 높게 나타났고 양파즙 첨가 식빵이 낮게 나타났다. 경도를 측정한 결과 양파즙을 첨가할수록 낮았으며 무첨가군이 높게 나타났다. 저장기간이 경과함에 따라 경도는 증가하였으며 무첨가군이 양파즙 첨가군에 비해 급격하게 증가하였다. 저장기간이 경과함에 따라 수분활성도는 감소하였으나 양파즙 첨가식빵이 무첨가군에 비해 높았으며 호기성균과 곰팡이균의 변화 또한 저장기간이 증가할수록 균수는 증가하였다. 관능평가 결과 맛, 향, 표면상태, 식감, 종합적인 기호도에서 무첨가군과 유의적인 차이는 없었으나 3% 첨가군이 가장 높게 평가되었다. 관능결과로부터 양파즙 3${\sim}$5% 를 첨가하는 것이 최적의 범위로 판단되었고 양파즙을 첨가함으로 인해 건강, 기호성 식품일 뿐만 아니라 제품의 저장기간도 연장시켜주는 것으로 확인되었다.