• 제목/요약/키워드: frozen tofu

검색결과 7건 처리시간 0.024초

비압착 냉동저장 두부의 조직감 변화에 미치는 항냉동제의 효과 (Effects of Cryoprotectants on the Textural Changes of Whole-coagulated Soybean Curd (Tofu) during Frozen Storage)

  • 정선화;최원석;손혜숙;이철호
    • 한국식품과학회지
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    • 제31권4호
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    • pp.957-963
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    • 1999
  • 두부의 냉동저장중에 일어나는 단백질 변성과 이로 인하여 일어나는 조직감 열화현상을 완화하기 위하여 항냉동제 첨가 두부의 제조 공정을 개발하고 항냉동제 최적 배합비율과 첨가량을 조사하였다. 여러 가지 항냉동제를 첨가하여 비압착 두부를 제조하여 냉동저장한 후 다시 해동한 냉동저장 두부의 조직감 변화를 반응표면분석법(RSM)으로 분석하고 관능검사 결과와 비교하였다. 냉동으로 인한 두부의 조직감 변화를 최소화하는데는 glucose, glycerol, sorbitol, sodium tripolyphosphate가 단일 항냉동제로서 효과가 있었으며, glycerol과 sodium tripolyphosphate 사이에서는 상호작용도 있는 것으로 나타났다. 결론적으로 냉동두부에 항냉동제를 단독으로 첨가하는 것보다는 여러 가지를 혼합하여 첨가하는 것이 두부조직의 열화방지에 더 효과적인 것으로 나타났다. 조직감 변화만을 고려한 절단시험의 RSM을 통하여 계산된 냉동두부의 항냉동제 최적 첨가량은 glucose 2.1%, glycerol 6.9%. sorbitol 2.1%, propylene glycol 0.4%, sodium tripolyphosphate 0.3% 이었으며, 조직감과 함께 맛과 향까지 고려한 전체 기호도 조사에 의한 항냉동제 최적 첨가량은 glucose 1%, glycerol 2%, sor-bitol 1%, propylene glycol 0.2%, sodium tripolyphosphate 0.5% 이었다.

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세계 두부 조리의 문화 (The Comparative Study of Curinary of Tofu of the World)

  • 한복진
    • 동아시아식생활학회지
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    • 제8권4호
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    • pp.536-553
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    • 1998
  • Korea supposed the place of origin of soybean. Although it is speculated that it was edible in the era of the Three Kingdoms(A.D. 5-9C), there is no documentary evidence. The first record about the edibility of tofu was written down in the Goryeo dynasty, and there was several documents that tofu was exported to China and Japan in the Chosun dynasty due to excellent manufacture skills for tofu. Tofu has been a good source of protein as a food for the common people, though there were not many traditional kinds. Especially, tofu has been an important vegetarian foodstuff in a Buddist temple, and has been used for vegetable soup and skewered greens necessary for the sacrificial rites of the humbler class as well as of the royal court. We frequently made sliced raw tofu and fried tofu, and it was used for broil, stew, and casserole as well as stuffing. In addition, tofu and its bean-curd dregs were applied of making soy. In China it is assumed that tofu has been eatable since the time of the Han(AD. 1C). Chinese tofu and its products are various and generally 20 different varieties are used. There are many dishes applied of tofu. salted and plain tofu were used as Chinese appetizer dishes. Plain, salted, skinned or deep-fried tofu was stir-fried in an hot oiled pan with vegetables, meats and fishes. Additionally, there are a variety of tofu dishes utilized stewing, frying, steaming, and soup cookeries. Tofu first appeared in the era of the Nara(8C) of Japan and was come into wide use in the era of the Aedo(Tokyo). In Japan tofu and its products are various and introduced in Shojin cookeries prevalent in the Buddist temples. It is especially noticeable that frozen or skinned tofu was used for these. Japanese tofu cooking is more delicate than Korean and Chinese ones, and Japanese people do not use oil. Instead, they in general utilize steaming and broiling cookeries. In the western countries the history of tofu edibility is short. However, their practical application of tofu in the dietary life is very positive.

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지역농산물 활용성 증대를 위한 간편식 개발 사업 (A Project on Development of HMR using Local Foods to Increase Local Food Consumption)

  • 김양숙
    • 급식외식위생학회지
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    • 제2권2호
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    • pp.78-83
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    • 2021
  • According to the report of the Korea Agro-Fisheries and Food Trade Corporation (2019), the size of the HMR food market in 2019 exceeded 4 trillion won. On the other hand, the consumption of agricultural products continued to decrease. As reported by Woo (2020) who analyzed consumer panel survey data, when the 2010 agricultural product purchase index was 100, the crop purchase index in 2019 was 72 and the vegetable and special crop purchase index was 69. Therefore, the Rural Development Administration promoted the research projects to develop the technologies for producing stably raw materials of HMR and for optimizing local foods as HMR ingredients. Researches on the development of HMR using local agricultural products has been being promoted in Cheonan, Chungju, and Jeju in 2020. In the case of Jeju, it has been prepared and realized the B2B commercialization of Jeju agricultural products in connection with the convenience store ingredients supplier in the province. In the case of Cheonan, development of HMR foods like as Sundae, dumpling, sausage, and Tteokgalbi using willd chive, cherry tomatoes, shiitake mushroom, fortified perilla, and licopene fortified watermelon has been being promoted. Lastly, in the case of Chungju, a diverse HMR foods have been developed using beans, centella asatica, Japanese lady bell, apples and peaches such as blended juices, frozen boiled rice, and tofu kit. In the future, in connection with the regional specialized crop cultivation project promoted by the Rural Development Administration, we intend to support the convergence commercialization of R&D technology based on regional characteristics.

춘천지역 주부들의 제례음식 준비에 관한 연구 (The Survey on the Practice of Ancestral Service Food in Chuncheon Area)

  • 김은실;함승시
    • 동아시아식생활학회지
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    • 제11권4호
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    • pp.235-246
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    • 2001
  • The survey on the practice of the memorial ceremonial food in Chuncheon area showed it varied according to social position of officiator, location(inland or seaside town) , and personal condition. The study included the foods prepared for the memorial services on the memorial day. New Year's Day and Chusok. 1. 40.4% of the subjects were in the thirties at their age, 46.6% were high school graduates, 57.3% were the first daughter-in-law, 40.4% had no religion, 30.9% were working at public administration and earned less than 1 to 1,5 million won monthly. 2. 71.7% of the subjects who replied that the ancestor worship service had to be kept were Buddhists. 55.4% of them were high school graduates, and 58.8% of them ran independent businesses. They learned how to practice the ancestor worship service from their mother before marriage or from their parents-in-law after marriage. 3. The older the officiators, the better they wanted to keep the traditional format of the service, but the Christians and Catholics wanted to change the format to western style in the future. 4. 92.7% of them served cooked milled rice. They prepared the soup in the order of beef soup, radish soup and dried Alaskan pollack soup. 5. Among cooked vegetable dishes, bracken was used the most and balloonflower root, mung bean sprout and spinach followed. Among jeon(pan-fried foods). frozen Alaskan pollack was used the most and buckwheat, mung bean and meatball followed. 6. They served san-juk(beef kebab) mostly on the ceremony. Among the grilled foods, tofu was the favorite, and croaker followed. 7. Among the fried foods. squid was the favorite, and sweet-potato and shrimp followed. Among the dried foods. they used in the order of dried Alaskan pollack, dried beef and squid. 8. Among the rice cake and traditional confectionery, they used in the order of Yak-sik(sweet rice cake), Gang-jeong(fried glutinous rice cookie), Jeol-pyun and In-jeol-mee. Among a beverage, they served Sik-hye(fermented rice drink) mostly. 9. Among fruits, apples. jujube, chestnut and dried persimmon were served. Aong a liquor, Cheongju was served mostly. 10. Soy sauce, salt and salted fermented fish were served, too.

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한국인 주요 단백질 급원식품 10종에 대한 동결건조 전후의 특성 연구 (Study on Major Korean Protein Sources Before and After Freeze Drying Processing)

  • 손양주;최수영;이금양;황영;유경미;황인경
    • 한국식품조리과학회지
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    • 제30권1호
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    • pp.64-75
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    • 2014
  • Freeze-drying process was used for 10 major protein foods referred by the Korea Health Statistics 2011 as follows; chicken, pork, beef, eggs, tofu, squid, soybean, mackerel, anchovy, and pollack/frozen pollack. Boiled samples and re-hydrated samples after freeze-drying were prepared for analysis. The weight variation, the chromaticity, the mechanical texture and sensory properties by eight trained panelists were measured. In the ratio of re-hydration, the anchovy showed the highest value(89.40%), followed by eggs, and squid showed the lowest value(35.51%). Changes of Hunter color value were observed among all samples. For rates on changes of hardness, every sample was increased except for eggs(p<.05). Among the 9 samples, except for eggs, chicken showed the lowest rate of increase in hardness(125.44%) while squid showed the highest rate of increase in hardness(1335.1%). Except for eggs and pork, eight samples represented differences in sensory properties, especially in juiciness and tenderness(p<.05). As a result, we found that egg is the most suitable for freeze-drying among 10 protein sources followed by pork and chicken.

서울지역 남녀 대학생의 한식 선호도 조사 (II) - 부식을 중심으로 - (Survey on Korean Food Preference of College Students in Seoul - Focused on Side Dishes -)

  • 홍희옥;김정윤;이정숙
    • Journal of Nutrition and Health
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    • 제39권7호
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    • pp.707-713
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    • 2006
  • 본 연구는 대학생을 대상으로 한국 음식 중 부식에 대한 선호도를 알아보기 위해 실시하였다. 연구 결과는 다음과 같다. 1. 조사대상자의 평균연령은 남학생 21.8세, 여학생 20.2세였고, BMI는 남학생 $22.6kg/m^2$ 여학생 $19.8kg/m^2$으로 남녀 모두 정상범위에 속하였다. 2. 조사대상자의 가족구성 형태, 가족 수 및 어머니의 학력과 직업은 남녀 간에 차이가 없었으나 주거형태 및 아버지의 직업과 교육수준은 남녀 간에 유의적인 차이를 보였다. 3. 국류의 선호도틀 보면 남학생은 설렁탕과 쇠고기국을 여학생은 된장국을 가장 좋아하였으며, 북어국, 설렁탕, 김치국, 쇠고기국의 선호도는 남학생이 여학생보다 유의적으로 높았다 (p<0.05). 4. 찌개류의 경우 남녀모두 김치찌개와 순두부찌개의 선호도가 가장 높았으며 청국장과 동태찌개의 선호도가 가장 낮았다 (p<0.05). 5. 조림류의 선호도는 남녀모두 장조림을 가장 좋아하였고 콩조림과 고추조림을 가장 싫어하였으며, 콩조림과 고추 조림은 여학생이 남학생보다 유의적으로 낮은 선호도를 나타내었다 (p < 0.05). 6. 볶음류의 선호도를 보면 남학생의 경우 제육볶음을 여학생의 경우 김치볶음을 가장 좋아하였으며, 멸치볶음은 남녀 모두 싫어하는 것으로 조사되었다. 또한 제육볶음의 선호도는 남녀 간에 유의적인 차이를 보였다 (p<0.05) 7. 구이류의 경우 남녀모두 갈비구이의 선호도가 가장 높았으며 더덕구이의 선호도는 가장 낮았다. 장어구이와 더덕구이는 남녀 간의 차이를 보여 남학생이 여학생보다 더 좋아하였다 (p<0.05). 8. 무침류의 경우 남녀 모두 가장 좋아하는 것은 오이무침으로, 가장 싫어하는 것은 미나리무침으로 조사되었으며 도라지무침과 미나리무침은 남녀 간에 유의적인 차이를 보여 남학생이 여학생보다 높은 선호도를 보였다 (p<0.05). 9. 김치류는 남녀모두 배추김치, 총각김치, 깍두기, 열무김치의 선호도가 7점 이상의 높은 선호도를 보였으며 갓김치와 백김치는 남학생보다 여학생이 더 낮은 선호도를 보였다 (p<0.05). 이상의 결과 남녀 간에 좋아하는 음식에 차이를 보이고 있으며 남학생보다 여학생이 더 낮은 선호도를 보였다. 특히 국이나 찌개류 및 구이류의 경우 생선을 이용한 음식보다는 육류를 이용한 음식의 선호도가 남녀 모두 높았으며 콩을 사용한 음식은 남녀 모두 기피하는 것으로 나타났다. 또한 일반적으로 자주 이용하는 음식의 경우에는 선호도가 놓았으나 이용도가 낮은 음식 즉, 갓김치나 백김치와 같은 음식은 낮은 선호도를 보였다. 또한 남학생의 경우 건강증진 식품의 하나인 장어구이의 선호도가 높은 것으로 조사되어 남녀 간에 차이를 보였다. 전반적인 음식선호도에 남녀 간에 차이를 보이고 있으므로 단체급식를 위한 식단 작성 시 이러한 차이를 고려할 필요가 있으며 대학생을 대상으로 한 영양 교육 프로그램 작성시 이러한 차이를 고려한 식생활 교정프로그램을 작성할 필요가 있다고 사료된다.

우리나라 주요 냉장판매식품의 보관온도 실태 조사 (Survey on Storage Temperature of Domestic Major Chilled Foods in Refrigerator)

  • 이유시;하지형;박기환;이숙연;최윤주;이동호;박선희;문은숙;류경;신형수;하상도
    • 한국식품위생안전성학회지
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    • 제23권4호
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    • pp.304-308
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    • 2008
  • 본 연구는 주요 냉장식품(두부, 묵, 어육가공품(어묵), 생면, 김초밥, 샐러드)의 온도 관리실태를 조사하여 문제점을 파악하고 국내 유통업소의 냉장 냉동진열 판매 제품의 관리온도 개선 및 관리방안을 제시하고자 하였다. 주요 냉장고 내 위치별 온도는 보편적으로 아래($7.5^{\circ}C$)가 높고 윗부분($6.4^{\circ}C$)이 낮았으며, 앞쪽($8.9^{\circ}C$)이 높고 뒤쪽($7.5^{\circ}C$)이 낮은 것으로 조사되었다. 모든 냉장식품의 평균 냉장고 보관 온도는 $7^{\circ}C$(최대 $22.9^{\circ}C$, 최저 $-2^{\circ}C$)였으며, 대형할인매장이 $6.5^{\circ}C$,백화점이 $7.5^{\circ}C$, 편의점이 $7.6^{\circ}C$ 였다. 모든 냉장식품의 평균 표면온도는 $8.2^{\circ}C$(최대 $19^{\circ}C$, 최저 $-0.4^{\circ}C$)였으며, 대형할인매장이 $8.1^{\circ}C$,백화점이 $8.5^{\circ}C$, 편의점이 $7.6^{\circ}C$으로 조사되었다. 식품표면과 중심온도는 식품별 차이가 있으며 최대 $2.3^{\circ}C$ 차이로 나타났다. 두부(표면온도 $6.1{\sim}10.6^{\circ}C$, 중심온도 $4{\sim}11.1^{\circ}C$), 어묵($6{\sim}12.3^{\circ}C$, $6.5{\sim}13.6^{\circ}C$), 김밥($2.3{\sim}18.2^{\circ}C$, $2{\sim}17.3^{\circ}C$), 샐러드류($4.6{\sim}12.2^{\circ}C$, $4.1{\sim}10.4^{\circ}C$), 생면류($3.4{\sim}12.6^{\circ}C$, $3.8{\sim}10.3^{\circ}C$), 묵류($7.1{\sim}19^{\circ}C$, $8.3{\sim}17.1^{\circ}C$)의 다섯 가지 식품별로 차이를 보였다. 냉장고 표시온도와 식품표면 온도 항목간의 유의적 차이가 있는 것으로 나타났다(P<0.01). 냉장고 표시 온도는 김밥 1곳(100%)에서 규정온도인 $10^{\circ}C$를 초과했지만, 식품표면 온도에서는 두부 9곳(17%), 어묵 6곳(11.3%), 묵 10곳(18.9%), 생면 11곳(20.8%), 김밥 13곳(24.5%), 샐러드 4곳(7.5%)이 초과한 것으로 나타났다. 결론적으로 우리나라 냉장보관 식품 중 표면온도와 $10^{\circ}C$를 초과하는 경우가 많아 냉장보관식품의 온도관리가 철저히 이루어져야 할 것으로 판단된다.