• Food Science and Biotechnology
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• 제17권5호
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• pp.996-1002
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• 2008

Pickled hen egg dipped in brewed apple vinegar for 7 and 14 days was prepared and changes of weight, pH, viscosity, calcium content, antioxidative effect, and sensory characteristics were determined. During a pickling, the egg weight was increased from 62.03 g at day 0 to 91.13 and 94.93 g at day 7 and 14, respectively. The pH of the egg white and yolk, initially at pH 10.24 and 6.56, was decreased, while that of the pickling solution was increased by the pickling days. Viscosity of the pickled egg white was significantly decreased with the pickling days (p<0.05). Significant antioxidative effect was found from the pickled egg mixture (egg white:yolk=1:1). Calcium content of the egg white after 7 and 14 days of the pickling was 280-300 times higher than the fresh egg white and 1.9 times higher than fresh egg yolk. Addition of plain yogurt and honey improved the sensory quality of a pickled egg and was able to mask the unpleasant sour taste. Results suggest that, in addition to the use of pickled egg by itself, egg-based foods such as mayonnaise with enforced calcium content can be developed using a pickled egg.

• 한국식품영양학회지
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• 제21권1호
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• pp.43-50
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• 2008

This study used Omija extract as a natural congelation to compare and analyze soybean curd's physicochemical and sensory quality characteristics in order to improve functional benefits and taste of soybean curd. When Omija extract concentration increased, protein content went up considerably while crude fat and yield significantly decreased. In the pH change, the group with Omija extract were lower than control and the change was not much noticeable but slightly checked as the storage period was extended. The turbidity tended to increase as the storage period was longer. In the acidity change, the group with 0.5% Omija extract showed rapid increase on the 4th day after starting storage, and it can be interpreted that decomposition started at the moment. As the storage period was extended, brightness and yellowness remarkably decreased and redness considerably enhanced: higher concentration Omija extract worked to decreased brightness and to increase yellowness and redness. In accordance with the storage period, hardness, brittleness and gumminess increased and springness decreased, but there was no considerable change in cohesiveness: in accordance with the concentration, hardness, brittleness and gumminess significantly increased, but there was no considerable change in cohesiveness. In terms of sensory quality, the group with 1% of Omija extract showed the best appearance, flavor, taste and after swallowing results. The group with 1% Omija extract was the most preferred, $4.89{\pm}0.32$ in the overall preference. In conclusion, adding Omija extract can improve soybean curd's physicochemical and sensory quality characteristics. Moreover, the extracts can be expected to play an important role in encouraging Omija's value and widening its appliances to various food.

• 한국축산식품학회지
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• 제18권2호
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• pp.132-141
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• 1998

This study were carried out for investigation of physicochemical and sensory characteristics of shelf-life of Korean vaccum packaged chilled pork hams for export. The samples were stored at 0$\pm$1$^{\circ}C$ (A and B companies) and 2$\pm$1$^{\circ}C$ (C and D companies). In the proximate analysis of composition of hams, moistures were 75.36~76.57%, crude proteins 19.26~21.08%, crude fat 1.40~3.69% and crude ash 1.03~1.13%. TBA values were 0.192~0.264 mgMA/kg and did not change much during all storage times regardless of storage temperature. VBN values were 12.14~14.01mg / 100g after 50 days in the storage at $0^{\circ}C$, but the samples stored at 2$^{\circ}C$ exceeded 20mg/100g at 50 days. The values of pH were 5.71~6.50, which are higher than those of loins during all storage times. Purge losses were 1.23~1.98% at the initial time and 2.83~10.59% after 50 days. So, the variation among samples appeared to be large. Cooking losses appeared to be 33.86~56.24%. In the result of sensory evaluation of cooked meat, the ham of B company obtained good scores in all items. But, after 20 days, all samples were not significantly different in total acceptability.

• 한국식품과학회지
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• 제39권2호
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• pp.194-199
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• 2007

전통증편에 새송이 버섯을 첨가하여 증편의 이화학적, 기계적, 관능적 품질 특성을 조사하였다. 새송이 버섯 첨가량을 달리한 증편반죽의 부피는 새송이 버섯 1% 첨가군이 가장 많이 증가하였고, 제조한 증편의 높이는 새송이 버섯 첨가량이 많을수록 높게 나타나 새송이 버섯 5% 첨가군에서 가장 높게 나타났다. pH는 새송이 버섯 5% 첨가군이 가장 낮게 나타났으며, 수분은 대조군에 비해 첨가군의 수분함량이 유의적으로 낮게 나타났다. 당함량은 발효가 진행되면서 모두 감소하였고, 새송이 버섯 첨가량이 증가할수록 유의적으로 높게 나타났다. 새송이 버섯 첨가 증편의 texture 변화에서 색도 중 L값은 대조군에 비해 새송이 버섯 첨가량이 증가할수록 유의적으로 감소하였으며, 반면에 a값과 b값은 첨가량이 증가할수록 유의적으로 증가하였다. Texture 측정에서는 부착성에서 5%가 가장 높게 나타났고, 탄력성은 새송이 버섯 5% 첨가군이 가장 낮게 나타난 반면 1% 첨가군이 가장 높게 나타났다. 전체적인 기호도는 새송이 버섯 1% 첨가군이 가장 높게 나타났다. 이상의 결과에서 새송이 버섯 증편의 제조에서 이화학적 특성, 기계적 특성, 관능적 특성을 종합했을 때 새송이 버섯 분말을 1%나 3% 첨가하는 것이 증편 제조시 최적의 농도이며 이때 증편의 품질이 향상됨을 확인할 수 있었다.

• 한국식품과학회지
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• 제48권4호
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• pp.366-371
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• 2016

본 연구는 우리 밀을 피자반죽의 제조에 적용함으로서 메뉴의 다양화를 달성하고자 하였으며, 우리밀 피자반죽의 이화학 그리고 관능 특성을 통해 식품가공학적 기초 연구를 수행하고 적용 가능성을 살펴보았다. 우리밀과 수입밀을 배합비를 달리하여 제조한 피자반죽은 조단백질과 조회분의 함량, 색택에서 유의적인 차이가 있었으나 기기적으로 측정한 텍스처에서는 차이가 없었다. 묘사분석을 통해 피자반죽에 관한 23개의 묘사 용어를 도출하였으며, 관능검사를 실시한 결과, 표면의 바삭함, 표면의 부드러움, 거침, 쫄깃함에서만 우리밀과 수입밀간의 차이가 있었다(p<0.05). 또한 주성분분석 결과, 제1주성분(37.4%)의 (-)에서 (+)으로 우리밀의 배합량에 따른 차이가 나타났다. 다만 우리밀을 피자에 적용하기 위해서는 기호도 검사, 다양한 토핑과 소스의 적용 등 추가적인 실험이 있어야 할 것이다.

• 한국축산식품학회지
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• 제29권2호
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• pp.260-268
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• 2009

This study was conducted to determine the effects of added rice bran fiber on the physicochemical and sensory characterization of blood sausage. Blood sausages were supplemented with rice bran fiber at levels of 0% (control), 1%, 2%, and 3%. The moisture, hardness, gumminess, and chewiness of treatments with added rice bran fiber were higher than those of controls (p<0.05). The pH, lightness, redness, and yellowness of uncooked as well as cooked blood sausages increased with increasing addition levels of rice bran fiber levels, but energy values were lower in blood sausage treatments with containing rice bran fiber than that of controls (p<0.05). As the increase levels of rice bran fiber in blood sausage the energy levels were decreased (p<0.05). All sensory scores of treatments containing rice bran fiber were higher than controls, and the highest overall acceptability was attained when 2% rice bran fiber was added to blood sausage. The blood sausage with 2% rice bran fiber can be manufactured with high quality characteristics.

• 한국축산식품학회지
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• 제31권2호
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• pp.200-206
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• 2011

Off-flavor and lipid oxidation are possible defects of irradiated bulgogi. This study compared the effects of several physicochemical treatments on microbial safety, volatiles, lipid oxidation, and sensory properties of irradiated beef bulgogi. Samples were separately irradiated with 20 kGy after each treatment such as packaging (aerobic and vacuum), antioxidants (vitamin C + ${\alpha}$-tocopherol (0.0 and 1.0%, w/w)), charcoal teabags (0 and 0.5%), or different temperatures (room temperature, -20, and -70$^{\circ}C$). No bacterial growth was observed (p<0.05) after irradiation of more than 20 kGy during storage at $35^{\circ}C$. Volatiles created by irradiating bulgogi were toluene, heptane, and 1,3-bis(1,1-dimethylethyl)benzene. Irradiation offflavor, lipid oxidation, and deterioration of sensory quality induced by irradiation were effectively reduced (p<0.05) by all physico-chemical treatments tested.

• 동아시아식생활학회지
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• 제17권1호
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• pp.94-102
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• 2007

This study was designed to characterize the physicochemical effects of the addition of rice wine cake(0, 1, 2, 4%) to yackwa. Dietary fiber, volume, SEM, TBA, color, texture characteristics and sensory evaluation of yackwa were investigated. The dietary fiber content of rice wine cake was 10.24%, and the dietary fiber content of yackwa increased with added rice wine cake. The extensibility value increased with more rice wine cake. SEM revealed, many holes in a delicate structure with many layers. During a 4-week storage period, yackwa containing rice wine cake had lower TBA values than control, except for the sample containing 4% rice wine cake. The TBA value of yackwa containing 4% rice wine cake had the highest TBA value. The L value and b value of samples decreased with the addition of rice wine cake and storage time, but the value increased with added rice wine cake according to the storage time. The hardness, cohesiveness and gumminess of yackwa increased according to the time of storage and the addition of rice wine cake, but the springiness and chewiness of yackwa decreased. In sensory evaluations, all items received the lower scores according to the storage time. Yackwa that contained 1%(RWC1) received the highest score for color and flavor, and yackwa that contained 2% (RWC2) had the highest score for crispness and roast. Overall preference was, in order: RWC2 > RWC1 > CON > RWC4. Yackwa that contained $1{\sim}2%$ rice wine cake possessed superior features in most of the quality properties and in sensory evaluation, so yackwa that contains rice wine cake can be used as a functional food.

• 대한영양사협회학술지
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• 제24권1호
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• pp.31-47
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• 2018

The purpose of this research was to provide basic information for cookies made with black soybeans, chick peas, lentils, oatmeal, and brewer's yeast and to establish the optimum formula for the development of low glycemic index (GI) cookies with high biotin content for lactating women. This study was performed to determine the optimal composite recipe of oatmeal cookies with two different concentrations levels of bean powder (black soybeans, chick peas, lentils) and brewer's yeast using a central composite design. In addition, the mixing conditions of oatmeal cookies were optimized using response surface methodology of sensory evaluation and mechanical and physicochemical analysis. As a result, mechanical and physicochemical analyses showed significant values for lightness, redness, yellowness, hardness, and water content (P<0.05), while sensory evaluation showed significant values for flavor, taste, crispness, and overall acceptability (P<0.05). The optimal sensory combination was suggested to be 3.73 g of bean powder and 1.59 g of brewer's yeast. Considering all outcomes obtained throughout the experiments, brewer's yeast, black soybeans, chick peas, lentils, and oatmeal are suitable ingredients for increasing functionality and consumer acceptability of cookies. In addition, these results are expected to be useful in producing cookies of optimal quality, contributing to the development of various nutritious foods, and improving the food industry for lactating women.

• 식품보건융합연구
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• 제6권5호
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• pp.11-17
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• 2020

This study tried to analyze sensual properties by classifying the thermal water extract of the main material used in Ssanghwa tea. Through this study, we wanted to develop popular Ssanghwa tea and further carry out basic research for the development of various menus using it. The ingredients for the Ssanghwa tea were washed under running water, then dehydrated and put in a pot as 2L of purified water. Ssangwha tea were heated at 100℃ for 10 minutes, then lowered the temperature to 75℃ and boiled down to 200 ml for 110 minutes. This study evaluated sensory characteristics of four types of commercial products and the five types manufactured by the description analysis. Quantitative analysis of the commercial Ssanghwa tea showed significant differences between samples in seven of the total 13 sensory characteristics except OG(Smell of grass), OC(Oriental medicine smell), TG(Umami), RT(Thick), RC(Rough) and RS(Tub-Tub) (p<0.05). In particular, differences between samples were evident in CT(Transmittance), CB(Brownness), TW(Sweet taste) and TB(Bitter) (p<0.001), which appeared to be the main differentiated features of appearance, aroma and taste for commercial Ssanghwa tea. This study tried to analyze sensual properties by classifying the thermal water extract of the main material used in Ssanghwa tea. Through, we wanted to develop popular Ssanghwa tea and further carry out basic research for the development of various menus using it.