• Title, Summary, Keyword: Chungkukjang

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The Study on the Consumption and the Preference of Chungkukjang Products among Middle School Students in Seoul (서울 지역 일부 중학생들의 청국장 제품의 이용 실태 및 기호도 조사)

  • Jung, Hee-Jung;Nam, Eun-Sook;Park, Shin-In
    • The Korean Journal of Food And Nutrition
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    • v.19 no.4
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    • pp.427-434
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    • 2006
  • This study was performed to investigate the consumption and the preference of chungkukjang products among the middle school students. The subject were 538 middle school students(male 283, female 255) in $3^{th}$ grade, and were asked to fill out the questionnaire. The collected data were analyzed by SAS package. The result showed that most students knew about traditional chungkukjang(88.5%) and chungkukjang powder(68.2%), but only 43.5% and 29.4% of the respondents knew about raw chungkukjang and chungkukjang pill, respectively. When asked how often they eat chungkukjang products, traditional chungkukjang were taken often, but chungkukjang powder, raw chungkukjang and chungkukjang pill were shown to be taken relatively less. Over 60% of the students responded that they liked chungkukjang products, because of 'encourage by parents' and 'good for health', but there was no statistical difference by gender. When asked about the reasons for the dislike of the chungkukjang products, male students responded 'bad smell'of traditional chungkukjang, while female students 'eplied' not eating at home'. The students disliked the chungkukjang powder, chungkukjang pill and raw chungkukjang because of 'not knowing it.' These results showed that the social interest and support for the chungkukjang products were necessary and there was a need to advertise the chungkukjang products.

Perception and Preference of Chungkukjang in the Middle School Students in Seoul (서울 지역 중학생의 청국장에 대한 인식 및 기호도 조사)

  • Jung, Hee-Jung;Nam, Eun-Sook;Park, Shin-In
    • The Korean Journal of Food And Nutrition
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    • v.19 no.4
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    • pp.416-426
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    • 2006
  • The purpose of the study was to investigate the perception and preference of chungkukjang in the middle school students under school meal service. For the investigation, 538 third-grade students in Seoul area were surveyed by a questionnaire and the data were analyzed by the SAS package. The result showed that 81.3% of the surveyed students responded the awareness of chungkukjang, and the motives of their interest in chungkukjang were through home education(60.0%) and mass communication(30.9%). Most students recognized that chungkukjang is the soybean fermented food, healthy food and Korean traditional food. 33.8% of students responded that chungkukjang jjigae served at the school meal service was not tasty. It also revealed that male students had more preference for chungkukjang jjigae than female students. Among the 22 kinds of new chungkukjang menu served at the school meal service in the future, 10 kinds of menu (chungkukjang samgeobsal gui, samgeobsal chungkukjang bockum, chungkukjang sauce dakk gui, chungkukjang dongasmali, chungkukjang sogogi janggug, chungkukjang kimchi bokgumbab, chungkukjang bajirak kalguksu, chungkukjang kimchi buchim, chungkukjang sangsun gut, chungkukjang bibimbab) were highly preferred foods by male students. Therefore, in order to make middle school students take the chungkukjang foods with pride by increasing their perception and knowledge of them, the family should give them many opportunities to eat chungkukjang foods. The school also should try to use more chungkukjang foods in the school meal service, and try to improve in cooking process to make more tasty chungkukjang foods fur teenagers.

Quality Characteristics of Muffins Containing Chungkukjang Powder (청국장 가루를 첨가한 머핀의 품질 특성)

  • Seo, Eun-Ok;Ko, Seong-Hye;Kim, Kwang-Oh
    • Journal of the East Asian Society of Dietary Life
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    • v.19 no.4
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    • pp.635-640
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    • 2009
  • In this study, muffins were made with the addition of 0%, 3%, 6% and 9% of Chungkukjang powder and, the quality characteristics, such as volume, height, appearance, chromaticity and moisture contents, were measured using SEM (Scanning Electronic Microscope) measurement, texture tests and sensory tests. In the regards to volume, as the added amount of added Chungkukjang increased, the volume also increased. There was no significant difference in the height and moisture content of the muffins at the different Chungkukjang powder concentrations. Using SEM, it was shown that as the amount of added Chungkukjang increased, the gluten content decreased, which in turn caused the formation of thick cell membranes and rough pores and reduced gluten composition capacity. Luminosity L value in Chungkukjang muffin decreased as the amount of added Chungkukjang powder increased. There was significant difference in the red chromaticity a value and yellow chromaticity b value among the samples (p<0.05). The results of the texture test showed that the hardness of the Chungkukjang muffin decreased as the amount of added Chungkukjang increased. In addition, as the amount of added Chungkukjang increased, the adhesiveness decreased. There was no significant difference in springing, chewiness and gumminess among the samples. There was a significant difference in the cohesiveness among all other samples in cohesiveness (p<0.05). The results of the sensory test showed that the wave form of the Chungkukjang muffin decreased as the amount of added Chungkukjang increased. The pore of the muffin increased as the amount of added Chungkukjang increased. The color quality of the muffin decreased as the amount of added Chungkukjang increased. In terms of overall acceptability, 6% Chungkukjang was shown to result in the highest preference level.

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Physico-chemical Characteristics of Dua-Chungkukjang (두아 청국장의 이화학적 특성)

  • Park, Seok-Kyu;Ryu, Cha-Yeol;Lee, Sang-Won
    • Journal of Life Science
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    • v.19 no.9
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    • pp.1271-1276
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    • 2009
  • Unlike the traditional preparation method for Chungkukjang, we prepared Dua-Chungkukjang with soybean fermented at $40^{\circ}C$ after the soaking, germination and steaming process, and we studied the physico-chemical characteristics of Dua-Chungkukjang. Reducing sugar content in both traditional Chungkukjang and Dua-Chungkukjang increased sharply after 10 hr of fermentation, but it decreased slightly after that. Total nitrogen content in both traditional Chungkukjang and Dua-Chungkukjang increased slowly as fermentation took place. Total nitrogen content reached 3,500 mg% and 3,700 mg%, and soluble nitrogen compound reached 750 mg% and 1,800 mg% after 40 hr of fermentation, respectively. $\beta$-Glucosidase activity increased continuously as fermentation took place, and it reached 193, 223, 235 and 248 units in Dua-Chungkukjang while it reached 125, 178, 205 and 214 units in traditional Chungkukjang after 10 hr, 20 hr, 30 hr and 40 hr of fermentation. This means that $\beta$-Glucosidase activity in Dua-Chungkukjang was $1.2{\sim}1.5$ times higher than that in the control treatment, traditional Chungkukjang. Total isoflavone content was $101.44{\mu}g$/g and $365.92{\mu}g$/g for 10 hr of fermentation, and $225.98{\mu}g$/g and $441.37{\mu}g$/g for 40 hr in traditional Chungkukjang and Dua-Chungkukjang, respectively. Isoflavone content of Dua-Chungkukjang was 2-3.5 times higher than that of traditional Chungkukjang. Anthocyanin content also increased continuously as fermentation took place, and it reached 5.0 mg/g and 6.9 mg/g in traditional Chungkukjang and Dua-Chungkukjang after 40 hr of fermentation, respectively.

Quality Characteristics of Cookies added with Chungkukjang Powder (청국장 분말을 첨가한 쿠키의 품질 특성)

  • Bang, Byung-Ho;Kim, Kwan-Pil;Kim, Min-Jung;Jeong, Eun-Ja
    • The Korean Journal of Food And Nutrition
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    • v.24 no.2
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    • pp.210-216
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    • 2011
  • We investigated the quality characteristics of cookies made with Chungkukjang powder. Chungkukjang is a well-known nutritional supplement. Cookie samples were made by adding differrent quantities of Chungkukjang powder(0%, 4%, 8% and 12%). We examined the resulting, moisture, pH, color, spread factor, hardness and sensory evaluation of the cookies. While the moisture and, a and b value of the cookies significantly increased when more Chungkukjang powder was added (p<0.01), the pH, L value, spread factor and hardness of the cookies significantly decreased(p<0.01). Cookies containing 0% and 4% Chungkukjang powder had similar sensory evaluation score in terms of color, taste and flavor cookies made with 4% Chungkukjang powder had the highest texture and overall consumer acceptability scores.

Sensory Evaluation of Chungkukjangs with Herbal Extracts and Clinical Evaluation in Atopy Dermatitis Patients (천연물(알로에, 계피, 감초) 첨가 청국장의 관능평가와 아토피 환자에서의 임상적 효능 평가)

  • 윤성하;이상선;장정은;노건웅
    • Journal of Nutrition and Health
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    • v.37 no.8
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    • pp.669-674
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    • 2004
  • The purpose of this study was to develop the antiallergic and hypoallergic fennented soybean foods without side effect. We manufactured Chungkukjang with addition of herbal (aloe, cinamon, licorice root) extract. Sensory evaluation was performed to evaluate the acceptability by the consumer. Clinical evaluation was performed with 10 atopic dermatitis (AD) patients who showed positive reaction with specific IgE and skin prick test. Cross-over study between nonnal Chungkukjang and Chungkukjang with aloe extract was performed. In sensory evaluation, Chungkukjang with aloe extract obtained best score overall. In clinical evaluation, 7 out of 10 AD patients showed positive reaction to soy-bean and 4 out of 10 AD patients showed positive reaction to normal Chungkukjang. 2 out of 10 AD patients showed positive reaction to Chungkukjang with aloe extract. In conclusion, Chungkukjang could be recommended as functional food with hypoallergic effect. As adding aloe extract to Chungkukjang, hypo allergic effect was increased.

The Study on the Consumption and the Preference of Chungkukjang among Elementary School Children in Seongnam Area (성남 지역 일부 초등학생의 청국장 섭취 실태 및 기호도 조사)

  • Mok, Eun-Kyung;Park, Shin-In
    • The Korean Journal of Food And Nutrition
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    • v.21 no.2
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    • pp.218-226
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    • 2008
  • This study examined the preference and consumption of chungkukjang among elementary school children in Seongnam, Korea. The subjects included 583 students(male 300, female 283) who were asked to fill out a questionnaire. The collected data were analyzed using the SAS package. The results showed that 91.9% of the female students, 91.6% of children from nuclear families, and 90.7% of children with stay-at-home mothers, consumed chungkukjang. Among the children who had eaten chungkukjang previously, most had consumed it at home, and 65.5% of the students responded that chungkukjang was tasty. The data also revealed that female students, children from nuclear families, and those with stay-at-home mothers had greater preference for chungkukjang than male students, children from extended families, and those with working mothers. When asked why they dislike chungkukjang, both male and female students who had eaten it responded because 'it smells bad' and that 'it is not tasty'. However, among the students who had never eaten it, the male students replied because 'it is not tasty'(33.3%) and that 'it is not eaten at home'(27.8%), and the primary responses of the female students were 'it is not eaten at home'(65.2%) and 'it is not tasty'(21.7%). However, the subjects who had tried chungkukjang previously answered that in the future they would like to have it more frequently, as compared to the subjects who had never eaten chungkukjang. Therefore, to increase knowledge and improve perceptions of chungkukjang foods, families should give children many opportunities to try them, and in return, children will consume chungkukjang foods with pride. Furthermore, it is important that society as well as mass media, which have great influence on children, show concern and offer support in promoting chungkukjang.

Rheological Properties and Sensory Characteristics of Roll Bread with Chungkukjang Powder (청국장 분말을 첨가한 롤빵의 물성 및 관능적 특성)

  • Ok, Min;Jung, In-Chang
    • Culinary science and hospitality research
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    • v.12 no.2
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    • pp.168-183
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    • 2006
  • The purpose of this study was to investigate quality characteristics of roll bread with the addition of Chungkukjang powder(0, 5, 10, 15, 20%). The antioxidative activity of antioxidative substances produced from several bacterial strains isolated from fermented foods were tested by DPPH $(\alpha,\alpha’-diphenyl-\beta-picrylhydrazyl)$ free radical scavenging activity. The most optimal medium condition for the production of antioxidative substance from Bacillus sp. FF-7 was 2% galactose as carbon source and 1% tryptone as nitrogen source. In color values, with increasing Chungkukjang powder content, the "lightness" (p<0.05) decreased in the crumb bread, while the redness(p<0.05) and yellowness(p<0.05) increased. The volume and specific volume of roll bread with 5.0% Chungkukjang powder were the highest(p<0.05). In the rheology measurements for the roll bread, the hardness (p<0.05) decreased with the addition of 5.0% Chungkukjang powder, but then increased with further additions of Chungkukjang up to 10.0%. Highest sensory scores for color, flavor, taste(p<0.05), texture(p<0.05) and overall acceptance(p<0.05) were obtained from roll bread with 5.0% Chungkukjang powder and control. From the results of this study, it was assumed that the development of food products using Chungkukjang is prospective in response to health-oriented consumers.

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2. The Development of Pizza Prepared with Chungkukjang and Onion : Formulation and Assessments of Nutrients and Sensory Quality for Chungkukjang${\cdot}$ onion Pizza (청국장${\cdot}$양파 첨가 피자제조 : 2. 피자토핑재료 배합비 개발 및 피자의 영양적${\cdot}$관능적 품질평가)

  • Sung, Chae-Ran;Kim, Chang-Soon
    • Korean journal of food and cookery science
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    • v.23 no.4
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    • pp.492-501
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    • 2007
  • This study was conducted to develop a topping formula for pizza containing Chungkukjang and onion as the main ingredients. The maximum amount of onion was limited to 10.5%, since the pizza crust and toppings would separate if too much water dispelled from the onion tissue during baking. The Chungkukjang was substituted for Bulgoggi, a meat topping. The sensory acceptability scores for the pizza topping decreased as the amount of Chungkukjang increased from 3.6% to 7.3%, due to its unpleasant odor, but scores increased when 1.6% Kimchi powder was added to the Chungkukjang without a significant difference from the control. Thus favorable sensory quality was obtained with a topping formula containing 8.7% Chungkukjang, 10.5% onion, and 1.6% Kimchi powder. The nutrient values of the final pizza products were assessed as follows. By adding the Chungkukjang and onion, crude protein, crude lipid, crude ash, and total dietary fiber contents increased. Moreover, the calorie level of the Chungkukjang-onion pizza was 3.8% higher than that of the control pizza. The amounts of compound amino acids including lysine increased. The free amino acids also increased from 143.3 to 188.6 mg/100 g. The ratio of saturated fatty acids to unsaturated fatty acids changed from 1:0.71 to 1:0.81. For the consumer test, the age groups of the participants were classified as 15-29 years old, 30-39 years old, and 40-62 years old. A positive result on acceptability of the developed pizza was obtained from most of the panelists in all age groups. Over 93% of the 119 responding subjects had purchasing intentions. An, especially, strong purchaging intention was shown in the younger age group of 15-29 year-olds, even though they had a lower preference for the Chungkukjang. Finally, an attribute of satisfaction was induced based on 'health' (79.5%) and 'flavor' (15.7%).

Survey on Elementary School Student's Perception and Preference of Chungkukjang in Seongnam Area (청국장에 대한 성남지역 일부 초등학생의 인지도와 선호도 조사)

  • Mok, Eun-Kyung;Nam, Eun-Sook;Park, Shin-In
    • The Korean Journal of Food And Nutrition
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    • v.21 no.3
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    • pp.366-373
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    • 2008
  • The principal objective of this study was to assess perceptions and preferences of chungkukjang in elementary school children who used a school foodservice. In this investigation, 583 elementary school students(300 boys, 283 girls) in the Seongnam area were surveyed via questionnaire, and the collected data were analyzed using the SAS package. The results demonstrated that 82.0% of students responded that they were aware of chungkukjang. Female students were more aware of chungkulgang than were male students, and children of the nuclear families were more aware of those of the extended family. With regard to the origins of their interest in chungkulgang, 51.8% of the subjects answered 'through home education' and 35.5% learned about chungkukjang 'through mass media'. Most students recognized chungkulgang as a 'healthy food' and a 'Korean traditional food'. Approximately 44% of the students ate chungkukjang in the school foodservice once per month, and 41.7% preferred this menu. Therefore, in order to increase elementary school students' knowledge and intake of chungkulgang, the school should attempt to foster the quality of chungkulgang in nutrition education, to serve chungkukjang frequently in school foodservices, and to develop recipes for tastier chungkukjang foods for children.