• Culinary science and hospitality research
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• v.18 no.4
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• pp.255-265
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• 2012

This study aimed to determine the physicochemical and sensory qualities for yogurt dressing prepared with blueberry juice(0, 10, 15, 20, and 25%). As the amount of added blueberry juice increased, citric acid, malic acid and succinic acid contents increased, but tartaric acid, lactic acid and acetic acid contents decreased. The pH of control group(3.75) was higher than that of the others(3.68-3.48). Sweetness of yogurt dressings decreased as the amount of added blueberry juice increased. DPPH radical scavenging activity of the control group was 26.44%, whereas those of yogurt dressings with blueberry juice ranged from 63.16-87.46%. Color L and b values decreased significantly, whereas a value increased significantly by addition of blueberry juice. Viscosity of the control group was lower than those of the others. The sensory property results showed that yogurt dressing with 20% blueberry juice was rated best. It was also preferred most. These results suggest 20% of blueberry juice is the best substitution ratio for yogurt dressing.

• Food Science and Preservation
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• v.25 no.1
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• pp.71-78
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• 2018

This study was carried out to investigate the quality characteristics and antioxidant activity of yogurt dressing prepared with different amounts (0, 5, 10, 15, and 20%) of black currant (Ribes nigrum L) extract. All samples were evaluated for chemical composition, pH, viscosity, sugar content, color, organic acid content and antioxidant activity. Our findings revealed that with increasing amounts of black currant extract in yogurt dressing, the moisture, crude protein and crude lipid contents decreased. The pH and viscosity gradually decreased, whereas the sugar increased with increase in black currant extract. Further, the lightness (L) value decreased, while the redness (a) and yellowness (b) values increased with increase in added black currant extract. Among the organic acids, the contents of citric acid, malic acid, succinic acid and acetic acid increased, while that of tartaric acid and lactic acid decreased with increasing levels of added black currant extract. The total polyphenol and total anthocyanin contents were 5.90-245.97 mg/100 g and 0.62-190.09 mg/100 g, respectively. In addition, the 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-thylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activities significantly increased with increase in added black currant extract.

• Culinary science and hospitality research
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• v.21 no.6
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• pp.206-217
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• 2015

This study sought to determine the physicochemical and sensory qualities of yogurt dressing prepared with different levels Aronia juice(0, 10, 20, 30, and 40%). As the amount of added Aronia juice increased, malic acid, acetic acid, and citric acid contents increased, although tartaric acid and lactic acid contents decreased. The viscosity of the control group(4,296.67 cP) was higher than those of the other groups(1,466.67~3,496.67 cP). The pH of the yogurt dressing containing 10% Aronia juice(3.83) was higher than those of the other groups(3.59~3.74). The sweetness of the yogurt dressing containing 10% Aronia juice($5.17^{\circ}Brix$) was higher than the other groups($2.47{\sim}3.47^{\circ}Brix$). Lightness decreased significantly, whereas a value and b value increased significantly with added levels of Aronia juice. DPPH radical scavenging activity of the control group was 7.42%, whereas those of the yogurt dressing samples with Aronia juice ranged from 26.30-69.86%. The sensory property results showed that the 20% Aronia juice added yogurt dressing group had the highest value in terms of color, thickness, taste, mouth feel, and overall acceptability. Overall, the results of this study indicates that the yogurt dressing containing 20% Aronia juice was the most preferred among the groups.

• Culinary science and hospitality research
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• v.19 no.5
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• pp.23-35
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• 2013

This study aimed to determine the physicochemical and sensory qualities of yogurt dressing prepared with Bokbunja juice(0, 10, 20, 30 and 40%). As the amount of added Bokbunja juice increased, contents of organic acids(citric acid, tartaric acid, malic acid, succinic acid and acetic acid) increased. The viscosity of the control group(8306.67 cP) was higher than those of the others(1633.33~6913.33 cP). The pH of the control group(3.96) was higher than those of the others(3.90~3.85). The sweetness of the control group(14.43) was lower than 10% Bokbunja juice added group(14.93). Color L decreased significantly, whereas a value and b value increased significantly with more Bokbunja juice added. DPPH radical scavenging activity of the control group was 5.84%, whereas those of yogurt dressing samples with Bokbunja juice ranged from 39.72~88.17%. The sensory property results showed that yogurt dressing with 30% Bokbunja juice added group had the highest value in terms of color, flavor, taste, mouth feel, and overall acceptability. Overall, the result of this study indicates that the yogurt dressing containing 30% of Bokbunja juice was most preferred among the groups.

• Korean journal of food and cookery science
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• v.22 no.1 s.91
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• pp.22-29
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• 2006

Yogurt base was prepared from milk powder $(14\sim18%)$ to which was added 0.4% Saururus chinensis (Lour.) Bail water extract (SCE) and fermented with lactic acid bacteria (a mixed strain of Streptococcus thermophilus and Lactobacillus bulgaricus) at $37^{\circ}C$ for 24 hr. The viscosity of the yogurt added SCE (SCE yogurt) made from 18% milk was higher than that of SCE yogurt containing $14\sim16%$ milk, whereas the pH and titratable acidity of the SCE yogurt were not significantly different on the range of milk contents. The optimal milk concentration for SCE yogurt manufacture was 18%. In order to optimize the preparation of dressing from SCE yogurt, the central composite design was conducted in terms of the yogurt (30, 40, 50, 60, 70 g), the mayonnaise (6, 12, 18, 24, 30 g) and the salt (0.1, 0.3, 0.5, 0.7, 0.9 g) contents. Sensory evaluation was performed and evaluated using a response surface methodology. The optimum ingredient ratio for SCE yogurt dressing was determined to be 61.2% of yogurt, 23.5% of mayonnaise, 0.58% of salt, 0.58% of honey, 1.75% of mustard, 0.23% of Tabasco pepper sauce, 0.94% of wine and 0.04% of white pepper.

• Culinary science and hospitality research
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• v.20 no.4
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• pp.1-13
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• 2014

This study aims to determine the physicochemical and sensory qualities of yogurt dressing prepared with mulberry juice(0, 10, 20, 30 and 40%). As the amount of organic acid added with mulberry juice increased, malic acid, acetic acid and citric acid contents increased, while tartaric acid content decreased. The viscosity of the control group(5033.33 cP) was higher than that of the others(3043.33~736.67 cP). The pH of the control group(3.38) was lower than that of the others(3.38~3.45). The sweetness of the control group(15.80) was lower than that of the others(16.30~16.83). As for the colors, L value decreased significantly, whereas a value and b value increased significantly with more mulberry juice added. DPPH radical scavenging activity of the control group was 8.61%, whereas that of yogurt dressing samples with mulberry juice ranged from 21.98~50.65%. The sensory property results showed that yogurt dressing with 20% mulberry juice added group had the highest value in terms of color, taste, mouth feel and overall acceptability. Overall, the result of this study indicates that the yogurt dressing containing 20% of mulberry juice was most preferred among the groups.

• Bulletin of Food Technology
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• v.15 no.2
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• pp.93-99
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• 2002

고압처리로 멸균된(high-pressure- sterilized) 저산성 식품은 아직 본격적으로 시장에 나오지는 않고 있다. 그러나 고압처리로 살균시켜(high-pressure-pasteurized) 제품의 부가가치를 높인 상품들은 일부 시판되고 있다. 미국시장에는 구아카몰(guacamole),굴 등이 있고, 일본과 유럽에는 잼, 젤리, 생선제품, 육제품, 슬라이스 햄, 샐러드 드레싱, 쌀떡, 주스, 요구르트 등이 판매되고 있다. 기술이 발전되어 처리비용이 떨어짐에따라 우유나 오렌지 주스 같은 저부가가치의 제품(high-volume commodity products)에도 고압처리 기술이 적용되는 예를 보게 될 것이다.미국 FDA의 "열처리된 저산성식품은 용접밀봉된 용기(캔, hermetically sealed container)에 포장되어야 한다." 는 규정(Title 21, Part 113 of the Code Federal Regulations)은 고압처리 식품을 염두에 두고 만들어진 규정은 아니지만, 저산성식품의 고압처리 공정(high-pressure processing)은 강력한 살균력을 제공하고 있다. 따라서 위의 FDA 규정(21 CFR 113)의 모든 조항은 고압처리 저산성 식품이 상업적인 생산에 들어가기 전에 시행되어야만 하는 것이다. 그 규정의 주요 조항중의 하나는 고압처리 공정에 대한 전문적인 지식을 가진 전문가나 위원회 등에 의하여 세부적인 고압처리공정 절차를 확립하는 것이다. 공정의 전문가들은 안전성을 증명하기 위해서 적합한 과학적인 방법을 사용하여 고압처리 공정을 확립해야만 한다. 저산성 식품에 대한 고압처리 공정은 주의깊게 설정된 공정조건하에서 재현성 있게 안전한 식품을 생산할 수 있어야 한다. 살균에 대한 안전성과 재현성이 입증되면 고압에 의한 살균처리공정 설계는 일반적인 대량생산 공정으로 활용될 수 있게 된다. PP(고압처리공정)의 유효성이 보다 확실하게 입증되고 널리 활용되려면, 공정의 살균력과 일관성(uniformity)을 증명하는 미생물적, 물리적, 화학적, 공학적인 여러 분야가 통합된 검증방법이 필요하다. 전통적인 열처리 공정은 스팀열의 가열시간으로 설명이 충분하다. 물론 HPP살균에서도 시간과 온도는 주요 변수이지만, 압력에 의한 미생물살균도 고려되어야만 한다. 또한 점도, 밀도, 구성성분, pH, 수분활성도 같은 해당제품의 특성도 제품의 고압처리 살균공정, 특히 미생물의 사멸에 영향을 미칠 수도 있다.