• 농업과학연구
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• 제41권2호
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• pp.135-139
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• 2014

Pathogenic E. coli associated post-weaning diarrhea (PWD) and edema disease are common diseases in commercially-housed weanling pigs. An enterotoxigenic E. coli (ETEC) oral challenge model has been used to mimic the physiological responses observed in commercial conditions. However, an oral challenge procedure has two major limitations: (1) the ETEC cell density is unknown at the point of oral inoculation, and (2) blending ETEC with traditional TSB (trypticase soy broth) is not palatable and hence decreases acceptability by piglets. Therefore, the purposes of this study were to (1) establish a regression equation that can be used for estimation of ETEC concentration in dilution media using the spectrophotometric measurement of cell density; and (2) examine survival of ETEC after blending either with TSB, sweetener or dextrose. A strain of ETEC (serogroup beta-hemolytic E. coli O149; K91; F4; toxins LT, STa, STb) was grown in TSB for 3.5 hours, centrifuged, the supernatant was discarded, and the ETEC pellet was then blended either with TSB (100 mL), sweetener (60 mL TSB + 40 mL fruit flavored concentrate), or dextrose (50 mL TSB + 50 mL dextrose; 0.5g/mL dextrose). Cell density was measured using the colorimetric method and also plated on a 5% sheep blood agar for counting of ETEC colony forming units at 0, 5, 35, 65 and 125 min after blending. The optical density at 600 nm explained 83% of ETEC colony forming units, indicating that the established linear equation (y= 6E+08x - 4E+07, P<0.004) can be used for robust quantification of ETEC cell density in TSB, sweetener and dextrose media. When ETEC was blended with sweetener and dextrose, survival of ETEC was decreased by 45% and 72% within 5 min post-blending. Therefore, further research is required to find out the suitable medium that has potential to improve palatability without compromising survival of ETEC.

• 동아시아식생활학회지
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• 제8권2호
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• pp.81-92
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• 1998

The pharmaceutical effects of non-alcoholic berverages made made in Limwonsibyukgi were studied. The type of beverage in Limwonsibyukgi were Tang(boiled herb extract), Ta(tea analog with/ without green tea), Jang(lactic acid fermented beverage), Galsoo and Suksoo. Most receipes for these beverages included boiling leaves, seeds, grains of grasses, trees and cereal, and adding honey and sugar as a sweetener, Each beverage has a pharmaceutical action : thirst elimination, enhancement of physical activity, and treatment of several diseases.

• 한국식품조리과학회지
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• 제31권3호
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• pp.280-287
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• 2015

Sujeonggwa is a popular Korean traditional beverage. However, consumers only prepare it at home on special occasions due to the time and effort required. Developing a convenient form of Sujeonggwa may promote its consumption. The objectives of this study were to 1) develop Sujeonggwa in a tea bag using different sweeteners and 2) describe the characteristics of Sujeonggwa's flavor in tea bag samples and 3) determine how well consumers accept the tea bag samples. A total of four types of Sujeonggwa in a tea bag were developed: two samples with varying amount of sugar, another sample using sugar and stevia and the last sample using sugar and short chain fructo-oligosaccharide as a sweetener. A commercial ginger tea and cinnamon tea were used as control products. Descriptive analysis was conducted on the same six samples and a descriptive panel identified its attributes. A total of 61 consumers evaluated acceptability using a nine-point hedonic scale and how they felt about intensities of the samples using a just-about-right scale. The results indicated that consumers liked Sujeonggwa samples in a tea bag more than commercial ginger tea and cinnamon tea.

• 한국식품위생안전성학회지
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• 제23권2호
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• pp.142-148
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• 2008

2007년 3월부터 11월까지 광주지역에 소재하는 재래시장과 할인마트에서 구입한 건과류 채소류와 건포류 등 94건, 전통 막걸리 판매점 등에서 구입한 탁류 23건, 모두 117건을 구입하여 식품첨가물인 이산화황, 타르색소와 인공감미료를 조사하였다. 건과류 채소류와 건포류 등 94건에서 이산화황을 조사한 결과 17건에서 $11.5{\sim}4,452.3\;mg/kg$이 검출되었으며, 식품공전의 기준을 적용한 결과 건조과실류인 대추채 2건이 각각 2,476.6 mg/kg, 4,452.3 mg/kg이 검출되어 부적합하였고, 중국산 건방울 토마토에서 88.9 mg/kg, 국내산 건호박에서 1,653.7 mg/kg이 검출되어 부적합 판정되었다. 또한, 주류 23건을 구입하여 인공감미료와 타르색소를 검사한 결과, 탁주에서 사용할 수 없는 인공감미료인 삭카진나트륨이 2건에서 0.4 mg/kg, 11.1 mg/kg이 검출되었으며, 합성 착색료로 주류에서 많이 사용할 가능성이 있는 황색5호 등 타르색소는 검출되지 않았다.

• 한국식품영양학회지
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• 제37권2호
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• pp.67-79
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• 2024

Yuzu (Citrus junos) undergoes traditional processing to create preserved yuzu with a sugar content of 50%. This study aimed to produce low-sugar yuzu syrup using artificial or natural sweeteners instead of sugar. Among artificial sweeteners, maltitol showed minimal browning and lack of deposition at high temperatures. The addition of xanthan gum (0.2%) and carboxymethyl cellulose (0.2%) resolved the issue of layer separation and viscosity decrease of yuzu syrup. Alternatively, grain syrup, a natural sweetener, improved viscosity and homogeneity without the additives. Yuzu syrups were developed using yuzu juice and preserved yuzu, with maltitol (20~40%) or grain syrup (50~70%) as the sweetener. Yuzu syrups containing 35% maltitol (M35) or 55% grain syrup (G55) had less than 5% and 10% free sugar, respectively. These syrups exhibited taste patterns similar to commercial yuzu syrup in analysis using an electronic tongue. Furthermore, M35 and G55 contained yuzu flavonoids at concentrations of 19.82 mg/g and 24.09 mg/g, respectively. Antioxidant activity (DPPH, ABTS radical scavenging) of M35 and G55 was equivalent to 10.55, 17.59 mg/100 g of Vitamin C and 97.39, 33.92 mg/100 g of Vitamin C, respectively. Consequently, M35 and G55 offer promising alternatives to preserved yuzu, providing low-sugar yuzu syrups enriched with functional ingredients.

• 한국식품영양학회지
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• 제30권4호
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• pp.653-664
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• 2017

This study added stevia leaf powder at ratios of 0.5, 1.0, 1.5, and 2.0 percent to Omija-pyun (Schisandra chinensis Jelly) as a natural low-calorie sweetener instead of sugar which is added to Omija-pyun in considerable amounts to evaluate quality characteristics and antioxidant activities compared to the control group with the addition of sugar. Moisture content of Omija-pyun expanded by increasing the measurement of stevia leaf powder (p<0.001), pH (p<0.01) and sugar content (p<0.001) decreased. L-values and b-values revealed a tendency to increase by adding more stevia leaf powder, but a-value revealed a tendency to decrease (p<0.001). Hardness (p<0.001) and chewiness (p<0.05) decreased by adding more stevia leaf powder. Based on the consumer preference evaluation, Omija-pyun with the addition of 0.5 percent stevia leaf powder was the most preferable in terms of color and flavor (p<0.001). The control group and Omija-pyun with the addition of 0.5 percent stevia leaf powder was the most preferable in terms of taste and texture (p<0.001). There were significant differences in the organoleptic properties except hardness between the samples by quantitative descriptive analysis. The control group revealed the highest preference in terms of redness and transparency, and redness and transparency tended to decrease by adding more stevia leaf powder (p<0.001). Organoleptic properties on bitterness and sourness were enhanced by adding more stevia leaf powder in the principal component analysis (PCA). Regarding antioxidant properties, total phenol compounds and flavonoid contents of Omija-pyun increased by adding more stevia leaf powder, and DPPH radical scavenging capacity also increased (p<0.001). Based on results, it is preferable to serve Omija-pyun with the addition of 1.0 percent stevia leaf powder instead of sugar within the context of quality and antioxidant activity.

• 한국조리학회지
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• 제21권3호
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• pp.248-258
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• 2015

본 연구는 수삼정과를 저열량 감미료인 자일리톨, 올리고당, 스테비오시드, 에리스리톨을 이용하여 전기밥솥으로 205분 제조하여 품질 특성을 비교하였다. 수삼정과의 수분 함량은 시료 간에 유의적인 차이를 나타내었고, 스테비오시드는 다른 시료들에 비해 수분 함량이 현저하게 높았다. 당도는 시료 간에 유의적인 차이를 보였다. 설탕으로 전기밥솥에 제조한 수삼정과의 명도와 적색도는 유의적으로 비슷한 경향을 보였으며, 자일리톨로 제조한 수삼정과의 황색도가 유의적으로 가장 낮았다. 수삼에 설탕을 넣고 제조한 대조군의 경도는 설탕으로 제조한 수삼정과가 유의적으로 가장 컷으며, 부착성은 시료 간에 유의적인 차이를 보였으나, 경도에 따른 뚜렷한 경향을 나타내지는 않았다. 탄력성은 설탕으로 제조한 것이 가장 컸고, 씹힘성은 시료 간에 유의적인 차이를 보였다. 검성은 유의적인 차이를 보이지는 않았으며, 응집성은 자일리톨과 올리고당으로 제조한 수삼정과의 응집성이 유의적으로 가장 컸다. 관능적인 특성을 검토해본 결과, 정과의 외관, 향, 맛, 종합적인 기호도에서 선호한 올리고당으로 제조한 수삼정과를 다른 대체 감미료로 만든 시료에 비해 높은 점수를 얻었으며, 정과의 윤기, 갈색의 정도, 인삼의 향, 맛도 선호하였다. 따라서 설탕을 대신하여 올리고당을 사용하여 정과를 제조하면 현대인들의 건강에 대한 염려에도 부합하는 칼로리가 낮은 정과의 제조도 가능함을 알 수 있었다.

• 한국조리학회지
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• 제11권3호
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• pp.166-178
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• 2005

This study was conducted to develop a healthy and functional drink using red ginseng, maekmoondong and omija using Saengmaeksan. Since the red ginseng extract was used as a raw material, it was diluted from 1,000 to 1,500 times using distilled water and the highest sensory score was obtained when the red ginseng extract was diluted to 1,500 times. When the red ginseng extract was mired with omija and maekmoondong, there was no difference between the ratio of 1: 20 : 1, 1 : 21 : 1 and 1: 22: 1 (red ginseng : omija : maekmoondong). In case of sweetener, honey showed the highest sensory store compared to sucrose, pear extract apple extract, sucralose and aspartame. Additionally, the sweetness was evaluated using all sweeteners and 10 brix or 11 brix showed the highest sensory score. Therefore, red ginseng extract was first mixed with omija and maekmoondong in the ratio of 1 : 20 : 1, and distilled water was added to 1,500 times of the amount of red ginseng extract. Honey was finally added to the mixture to obtain 10 brix concentration and this was highly acceptable.

• 한국식품조리과학회지
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• 제19권3호
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• pp.280-285
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• 2003

깨다식의 감미 및 물성 등의 개선을 위해 꿀보다 높은 점도와 hardness를 가지는 쌀엿과 조청 등을 첨가 혼합하여 품질을 조사한 결과를 요약하면 다음과 같다. 깨다식의 적정 재료 배합비는 깨가루 100 기준시, 꿀과 쌀엿의 동량 혼합액 50%(w/w)였으며, 이를 기준으로 제조한 깨다식의 이화학적 특성은 당도 17.44 brix$^{\circ}$, 수분 12.16, 환원당 15.44, 단백질 12.88, 지방 32.02, 조회분 2.82 %이었고, 기계적 특성 중 TPA의 chewiness는 0.28~0.30, hardness는 27.22~27.44 g/$\textrm{cm}^2$이고, 색도의 L값은 41.67, a값 4.58, 그리고 b값은 16.99였다.

• 한국식품저장유통학회지
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• 제23권6호
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• pp.804-810
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• 2016

본 연구는 4종의 시판품과 자체 개발하여 위탁 생산한 시제품 등 총 5종의 쌀 조청을 대상으로 품질 특성을 비교 조사하였다. 시제품의 총고형분, 환원당과 포도당 당량은 각각 $80^{\circ}Brix$, 44.53%와 56.94%로 나타났다. 그리고 시제품의 pH와 적정 산도는 각각 6.25와 0.19%이었으며, 색차는 74.42로 조사된 시료들 중 유의적으로 가장 낮은 값을 나타내었다. 한편 광투과도와 총 폴리페놀은 각각 56.4%T와 108.23 mg GAE/100 g인 것으로 확인되었다. 각종 쌀 조청의 물성 중 부착도는 29.0~66.0 sec 범위였는데 그 중 시제품은 61 sec로 한과 제조용으로 적당한 값을 나타내었다. 각종 쌀 조청의 DPPH 라디칼 소거능은 20.4~50.3% 범위였는데 그 중 시제품이 유의적으로 가장 높았다. 또한 각종 쌀 조청의 환원력은 0.44~0.72 범위였는데 그 중 시제품이 0.72로 가장 높았다. 쌀 조청 제품의 관능검사 결과 색은 6.70~6.80점, 향은 6.00~7.00점을 나타내었다. 맛과 입안촉감의 경우 시판품과 시제품 간에 유의적인 차이를 나타내지 않았다. 종합적 기호도의 경우 엿기름추출액을 첨가하여 제조한 시제품은 시판품에 비해 폴리페놀 함량이 높으나 유의적인 차이를 나타내지 않았다. 따라서 본 연구에서 개발된 쌀 조청 시제품은 한과 제품을 비롯하여 가공식품용으로 이용되기 적합한 것으로 확인되었다. 향후 전통식품인 쌀 조청의 소비 증대를 위해서 쌀 조청 제조기술을 활용한 향미를 개선하는 등 활용도 증진 연구가 더욱 필요할 것으로 사료된다.