• 제목/요약/키워드: freshness of food

검색결과 442건 처리시간 0.024초

표고버섯(Lentinus edodes)의 CA 저장 중 탄산가스농도의 효과 (Effect of $CO_2$ Concentration in CA Conditions on the Quality of Shiitake Mushroom (Lentinus edodes) during Storage)

  • 김동만;백형희;윤혜현;김길환
    • 한국식품과학회지
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    • 제21권4호
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    • pp.461-467
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    • 1989
  • 생표고버섯의 신선도 연장을 위하여 $2^{\circ}C$에서 산소의 농도를 2%로 고정하고 탄산가스의 농도를 각각 2%, 4%, 6%로 조절한 CA 저장조건으로 표고버섯을 저장하면서 탄산가스의 농도에 따른 호흡율, off-flavor, 단백질의 전기영동 패턴 등을 비롯한 품질에 관련된 인자들의 변호를 조사하였다. CA 저장한 표고버섯의 호흡율은 대조구와는 달리 저장 40일 후 급격히 증가한 후 다시 저하되었는데 환경가스 조성 중 탄산가스의 농도에 반비례하였으며 off-flavor 성분인 ethanol 및 acetaldehyde의 양은 호흡율이 급속히 증가하기 20일 전에 최대치를 보였다. 한편 탄산가스의 농도에 따라 정미성분인 5'-GMP, 단백질의 전기영동 패턴 등도 차이를 보였는데 환경가스 조성 중 산소의 농도를 2%로 고정시, 탄산가스의 농도를 2%로 유지하는 것이 표고버섯의 품질 보존에 효과적인 것으로 나타났다.

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얌차(飮茶)의 식문화 정황분석 연구 (A Study on the Context Analysis of Dining Culture in Yam Cha)

  • 정지홍;정지은;석왕미
    • 한국HCI학회논문지
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    • 제4권1호
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    • pp.29-34
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    • 2009
  • 식문화는 과학과 기술의 발전에 밀접한 관계를 갖고 변화해 왔다. 냉동 기술의 발전과 운송기술의 발전은 날생선 요리를 사막 한가운데서 까지도 먹을 수 있게 했다. 근래에는 정보 기술의 접목으로 음식 재료, 신선도, 만든이, 음식 이력 과 같은 다양한 정보와 서비스를 제공하고 있다. 이러한 정보기술을 활용한 다양한 서비스를 제공하기 위해서는 정보기술과 식문화의 접목을 위한 식문화 정보체계가 필요하다. 본 연구에서는 식문화와 정보기술의 효과적인 접목을 위한 첫 번째 단계로 식문화의 정황을 정의 하고 이들의 요소와 관계를 도출 하고자 한다. 본 연구는식문화를 음식과 사람 그리고 사람과 사람의 매개체로 보고 이들 간의 관계를 중심으로 해석 하였다. 조사대상은 중국남방의 대표적 음식중 하나인 '얌차'를 선정하였고 중국 광저우 미술대학 학생들과 같이 진행한 조사결과를 활용하였다.

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주부들의 식생활과 식품영양표시제도의 이용실태에 관한 연구 (A Study on the Dietary Life of Housewives and Their Usage Practices of Food-Nutrition Labelling)

  • 이강자;이윤희
    • 동아시아식생활학회지
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    • 제14권2호
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    • pp.161-174
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    • 2004
  • This study was accomplished to investigate the dietary life and their opinion about the food-nutrition labelling of 20's∼60's housewives in Seoul and Kyeonggi area. The results were as follows. Among subjects, 63.5% didn't make a budget for the food expenses because they did not practice habitually not only the budget-planning, but also the menu planning. They often brought the Kimchi from the relatives rather than preparing it by themselves. On the other hand, they often purchased the soy sauce, soybean paste and soybean paste mixed with red pepper. When purchasing the foods, the importantly considered factors were in the order of freshness, taste and nutritional quality. They thought the processed foods were convenient and economic in terms of time but were not beneficial for the health and low in the nutritional quality. The confirming degree of food-nutrition labelling was very low, but in case of confirming, they often confirmed the manufactured date and the expiration date in order to confirm the stability. The degree of confidence and understanding about food-nutrition labelling of subjects was average 3.3 out of 5. They wanted the nutrient content the most in the food-nutrition labelling on the package. They preferred it as the types of picture and graph rather than the table and descriptiption. The expected effects of food-nutrition labelling was that they might be helpful to select the foods for the prevention of the adult diseases and obesity. From the results, we proposed that the agencies and nutrition concerned consumers should make an every efforts for the successful implementation of food-nutrition labelling system.

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충북지역 학교급식 영양(교)사의 친환경 농산물 사용실태와 인식 및 만족도 (Use, Perception and Satisfaction of Dietitians with Environment-Friendly Agricultural Products in School Food Service in Chungbuk Area)

  • 윤서윤;최미경;김명희;김미현
    • 한국식품영양학회지
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    • 제34권3호
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    • pp.310-320
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    • 2021
  • This study aimed to investigate the use of environmentally friendly agricultural products (EFAPs) in Chungcheongbuk-do and the perception and satisfaction of school dietitians with EFAPs. The study survey was conducted from April to Jun 2018. Among 195 dietitians, 54.4% were nutrition teachers and 51.3% were working in elementary schools. Of the participants, 65% answered that the percentage of EFAPS in the total food cost was 10~30%. The most used EFAP food group was grains (64.6%), followed by vegetables (26.2%). The main reasons for using EFAPs were subsidies for EFAPs from local governments (85.1%) and students' health (52.3%). The average daily subsidy for EFAPs from the local governments was 201~500 won at 45.1%, and 200 won or less at 34.9%, which was based on one meal per student. In questions on satisfaction with using EFAPs, satisfaction with safety (3.93 out of 5 points) scored the highest, followed by nutrition (3.74), freshness (3.70), appearance (3.32), diversity (2.85), and price (2.78). Therefore, to expand the use of EFAPs in school food service, it is necessary to expand the provision of subsidies and increase EFAP production diversification.

커피교육이 커피전문점 선택속성의 중요도와 만족도에 미치는 영향 - 광주·전남 지역을 중심으로 - (Influence of Coffee Education on Importance and Satisfaction of Coffee House Selection Attributes in Gwangju and Jeonnam Area)

  • 길진모
    • 한국식생활문화학회지
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    • 제27권2호
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    • pp.184-192
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    • 2012
  • The purpose of this study was to analyze the general characteristics of coffee house consumers as well as the importance and satisfaction of selection attributes of specialty coffee houses according to length of coffee education period. Applicants in the Gwangju and Jeonnam area who had finished their Barista 2 grade certificate examination participated in a survey on March 12, 2011. Further, university students living in Gwangju participated as subjects who had never experienced coffee education from March 15 to March 31, 2011. Two-hundred and one subjects participated in the survey, and 184 questionnaires were used for analysis. Regardless of coffee education experience, quality of coffee was important, but higher educated subjects showed the lowest satisfaction of coffee from a coffee house (p<0.01) in terms of attributes such as freshness of coffee beans (p<0.01) and overall taste (p<0.01). Further, subjects who received no or little education demonstrated high correlation between importance/satisfaction of 'brand' and 'employee' compared to subjects who studied more than 2 semesters. These results provide future coffee house entrepreneurs and baristas with market information and marketing strategies for understanding customers' coffee house selection attributes.

태국 가구 규모에 따른 가정간편식 소비행동 (Home Meal Replacement (HMR) Consumption Behavior of Thai Consumers by Household Size)

  • 박주현;최승균;홍완수
    • 한국식생활문화학회지
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    • 제37권4호
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    • pp.324-334
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    • 2022
  • This study was conducted to provide basic data for product development and marketing strategies for the Thai home meal replacement (HMR) market, to reflect the changing trends in household sizes in Thailand. The results of analyzing the characteristics and differences of HMR consumption behavior between single-person households and multi-person households in Thailand were as follows: It was found that single-person households use HMR to save money and for the convenience in cooking and preparation. In the preference by HMR type, multi-person households showed a higher preference for all types of products than single-person households. Thai consumers, regardless of their household size, mainly use department stores and large shopping malls to purchase HMR, and they most prefer to get information through Internet advertisements. The shelf life, quality, taste, hygiene, and freshness of HMR were the main considerations for their selection. Based on the results of this study, the Thai market requires the development of HMR products that are reasonable in terms of cost and preparation time. In addition, it is necessary to develop products that can satisfy consumer needs, such as nutritional enhancement and therapeutic foods, products that are organic, eco-friendly, cater to various menus, and address the premium segment.

Expandable Polystyrene Box 의 오이의 신선도 유지효과 (Freshness Extension of Cucumber packed with Expandable Polystyrene Box)

  • 박형우;김상희;박종대
    • 한국포장학회지
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    • 제4권2호
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    • pp.18-23
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    • 1998
  • 개발한 EPS 포장상자가 오이의 신선도 유지효과 기능이 있는지의 여부를 분석코자 오이를 골판지상자와 0.02와 0.04mm 두께의 LDPE필름으로 포장 $20^{\circ}C$에 저장하면서 신선도 유지효과를 비교하였다. 저장 7일후 중량감소는 대조구는 4.9%, EPS 상자는 0.8%의 중량감소가 나타났고, 경도는 대조구 보다 필름구와 EPS 포장구에서 높았으며 비타민C도 EPS 포장구가 대조구 보다 15% 높게 유지되고 있었고 클로로필 함량은 EPS 포장구가 대조구 보다 21% 높게 유지되고 있었다. 부패는 포장구간에 나타나지 않았으며 대조구에서 표면이 노랗게 변하였으나 필름구와 EPS에서는 변하지 않았다 EPS 포장상자는 신선도 유지효과가 기존의 골판지상자 보다 더 우수하였다.

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Expandable Polystyrene Box의 '신고' 배의 신선도 유지효과 (Freshness Extension of 'Shingo' Pear Packed with Expandable Polystyrene Form Box)

  • 박형우;박종대;김동만;이명훈
    • 한국포장학회지
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    • 제4권2호
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    • pp.12-17
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    • 1998
  • 개발한 EPS 포장상자가 농산물의 신선도 유지효과 기능이 있는지의 여부를 분석코자 배를 포장하여 $20^{\circ}C$에 저장하면서 골판지상자와 0.02와 0.04mm 두께의 LDPE필름으로 포장한 것들과 신선도 유지효과를 비교하였다. 저장 50일 후 중량 감소는 대조구는 4.4%, EPS 상자는 0.7%의 중량감소가 나타났고, 비타민C도 2.12와 2.63 mg%로 EPS 포장구가 20% 높게 유지되고 있었다. 당도와 산도는 포장구간에 큰 차이가 있었으며 부패는 대조구는 상자당 1-2개과가 발생했으나 EPS 포장구는 발생하지 않아 개발한 EPS 포장구를 신선도 유지를 위한 유통용 상자로 활용가능성이 확인되었다.

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시판 한국 전통음료제품의 품질에 대한 기대치와 만족도 비교(IPA) (Comparison of the Importance and Performance(IPA) of the Quality of Korean Traditional Commercial Beverages)

  • 이연정
    • 한국식품조리과학회지
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    • 제21권5호
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    • pp.693-702
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    • 2005
  • The purpose of this study was to provide useful information for establishing efficient marketing direction by investigating the performance (satisfaction) and importance for the quality of Korean traditional commercial beverages. The subjects were 320 participants (130 males and 190 females) in Daegu and Kyungpook. The importance and satisfaction score of Korean traditional commercial beverages were measured on a five-point Likert scale. The results are summarized as follows. The overall satisfaction score on Korean traditional commercial beverages was 2.96 points. The beverages with the highest satisfaction scores were 'green tea' (3.48 points) 'shickhae' (3.35 points) and 'rice tea' (3.34 points) whereas 'ppongip tea' (2.58 points) 'gugija tea' (2.63 points) and 'gukhwa tea' (2.64 points) scored lowly. From the analysis of the difference between importance and performance of Korean traditional commercial beverages, importance (3.11 points) was rated much higher than performance (3.66 points). In the IPA result, it was important to continuously maintain 'taste', 'hygiene', 'freshness', 'period of circulation', 'wrapping condition' etc. Some items such as 'nutrition', 'safety', 'health', and 'ingredient' did not need intensive care and operation.

다슬기에서 추출한 Lipoxygenase의 정제와 특성 (Purification and Characterization of Lipoxygenase from Melania Snail)

  • 이양봉;신의철;김병철;양지영;장영진
    • 한국식품영양과학회지
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    • 제27권5호
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    • pp.808-812
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    • 1998
  • Melania snail(Semisulcopira bensoni) is used as ingredient in Korean traditional soup and nutritional foods. Generally, lipoxygenase in several food products may produce off-flavors during their processing and storage. Therefore, the inactivation of lipoxygenase is required to make the better extracts from Melania sanil. Also, the quality on freshness of Melania snail may be evaluated by lipoxygenase activity. The lipoxygenae activity was the highest at 40~60% saturation among several concentrations in salting-ouot saturated solution of ammonium sulfate. The partial purification of lipoxygenase was successfully obtained by Sephacryl S-200 gel chromatography. The first peak among three peaks for protein determination showed the highest activity of lipoxygenase in 13~16 fractions among 100 fractions. The highest peak of lipoxygenase activity by ion exchange chromatography was shown at 0.1M NaCl. In the purification step, the specific activity was 20.8U/mg and activity yield was 19.8%. The optimum pH and temperature were pH6.0~8.0 and 3$0^{\circ}C$, respectively. Molecular weight of the lipoxygenase was estimated about 35kDa by SDS-PAGE.

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