• Title/Summary/Keyword: freshness of food

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Physicochemical Changes in Olive Flounder (Paralichthys olivaceus) Muscle by Iced Water Pre-treatment (얼음물 전처리 방법이 넙치육의 품질특성에 미치는 영향)

  • Shin, Seung-Ho;Sung, Ki-Hyub;Chung, Chang-Ho
    • Korean Journal of Food Science and Technology
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    • v.45 no.6
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    • pp.700-707
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    • 2013
  • The purpose of this study was to monitor physicochemical changes of olive flounder (Paralichthys olivaceus) muscle by iced water pre-treatment. Moisture content, crude fat content, nucleotide content, texture (hardness and toughness), and rigor mortis were assessed. The sensory evaluation was performed with a nine-point hedonic test. K-values, a parameter of fish flesh freshness, were also calculated from the content of nucleotides and their corresponding decomposition products. Pre-treatment of flounder flesh with iced water was found to be fresher compared to the control, as determined by a difference in the K-values. Iced water pre-treatment hastened postmortem stiffness, as judged from the rigor index, and increased inosine monophosphate (IMP), which is known to be a savory taste compound, more quickly as adenosine triphosphate (ATP) degradation proceeded.

The Effect of Knowledge about Foods on the Foods Purchasing (식품에 대한 지식이 식품선택에 미치는 영향에 관한 조사연구)

  • 박윤정;조신호;이효지
    • Korean journal of food and cookery science
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    • v.5 no.2
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    • pp.63-73
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    • 1989
  • Family meals are very important for physical and mental health of family mebers. The purpose of this study is to contribute to change the habitual and unconscious cooking methods of housewives into more scientific moth(Ids. In order to achieve this purpose, this study tried to find out the degree to which housewives applied their knowledge of nutition and foods to actual behavior in purchasing. A special form of questionaire was prepared and distributed to 502 housewives in Seoul from Feb.8th to 22nd in 1989. The results were as follows: 1. Mean (score) of their nutritional knowledge was 14 7; if seems to be comparatively higher. 2. When they purchased food materials, their husbands' favor was the first consideration. Particularly, freshness was the first considered in purchasing meat, fishes, fruits, and vegetables. And Nutrition was so in case of seaweeds, oil, and fat. 3. For the most part, they cook three or four Subsidiary dishes for a meal. If they cooked one or two they chose to cook vegetables. If three or four they added meat and fishes. If more than four, they used various food materials.

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Research and Development Trends in Milk Products (우유 및 유제품의 기술개발 동향)

  • In, Yeong-Min;Jeong, Seok-Geun;Ham, Jun-Sang;Kim, Dong-Un;Kim, Gyeong-Nam
    • Journal of Dairy Science and Biotechnology
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    • v.18 no.1
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    • pp.22-37
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    • 2000
  • In spite of adverse circumstances, dairy food industry of Korea has been developed continuously with the every efforts of farmers, processors, researchers and government officers. Development and extension of new technology, such as safety assurance, improvement of nutritive ingredient, and keeping freshness are very important issues considering short shelf life of dairy products which are prevalent in Korea. In addition to, demands for advanced technology would be increased rapidly with the increase of consumption development of high quality products supply structure, decrease of production basis, and appearance of environmental problems. And demands for information about standard would be enlarged. Development of new products and technology for quality improvement should be evolved with the application of developed technology and cooperation of relative institutes in order to enlarge the consumption of milk and dairy products. In conclusion, efficient production on the basis of balance and development of dairy products which are safe and high quality are the most important subjects for the development of dairy industry in Korea.

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Effects of the Storage Condition on the Chemical Components of the Fruit Bodies in Oyster Mushroom(Pleurotus ostreatus) (느타리버섯의 저장조건(貯藏條件)이 자실체(子實體)의 화학성분(化學成分)에 미치는 영향(影響))

  • Park, Jeong Sik;Kim, Seong Yeol
    • Korean Journal of Agricultural Science
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    • v.13 no.1
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    • pp.123-129
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    • 1986
  • These studies were conducted to elucidate the effect of storage conditions on the changes of chemical components in fruit bodies of oyster mushroom(Pleurotus ostreatus), and the results obtained were as follows. 1. The fruit bodies of oyster mushroom sealed with polyethlene film 0.03 mm thickness maintained their freshness for 15 days at $1^{\circ}C$, 10 days at $5^{\circ}C$ and 3 days at $20^{\circ}C$. 2. The respiration rates of the fruit bodies grown in the rice-straw substrate was 29.7mg $CO_2/kg$ F.W/hr. at $1^{\circ}C$, 32.7mg at $5^{\circ}C$, and 46.3mg at $20^{\circ}C$ during the storage, respectively. The respiration rate showed the highest level at the second day during the storage. 3. The contents of total and reducing sugar during the storage of oyster mushroom rapidly increased at $5^{\circ}C$ until the fifth day following slowly decreased. 4. The content of protein in the oyster mushroom was reduced during the storage, while the free amino acid slightly increased. 5. The change of RNA and DNA contents during the storage of oyster mushroom showed inconsistency on the temperature and the storage period.

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Production and Consumption of Goat Milk Products in Korea (한국의 산양유제품 생산 및 소비 현황)

  • Park, Seung-Yong
    • Journal of Dairy Science and Biotechnology
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    • v.24 no.2
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    • pp.39-45
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    • 2006
  • There has been a successful re-entry in the form of infant foods and as a product concept of "well-being" milk by feeding goat natural medicinal plants in high mountain lands and goats eating natural feeds. Typical composition of cow's milk and goat's milk are not significantly differ in major nutritional constituents. However, the noticeable differences between milks of the bovine and caprine species concern in the dimensions of the micelles, in casein composition, in size of the micelles and in the mineral charge of the micelle, but the ratio Ca/Pi in the micelle is very close for the two species The potential market in Korea could be expected to expand by keeping its freshness and nutritional benefits. The supply of goat milk products all year around is also an important to the consumers. In order to increase its market scale of goat milk, product manufacturers need extensive advertising promotion. Domestically, goat milk is currently manufactured at small scale dairy goat milk companies and consumed mainly in the form of fresh or fermented goat milk, while imported goat milk powder is used to produce infant goat milk formula by major dairy companies. Decreasing the unpleasant goaty flavour for the Korean consumers would be essential for the researchers who work for dairy science and technology.

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Research of the Inflight Meal Service Quality (항공사 기내식 서비스품질 연구)

  • Ko, Seon-Hee
    • Journal of the Korea Convergence Society
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    • v.9 no.4
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    • pp.373-380
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    • 2018
  • The purpose of this study was to identify the importance and performance ranking and differences in inflight meal service quality. Data were collected from A airlines passengers. In order to secure the validity and reliability of the measurement tools, exploratory factor analysis were conducted, accordingly meal, service, cleanliness were deduced. IPA results are as follows. First, the quadrant I consisted of meal flavor, meal quality, meal menu, balanced diet, korean food availability, cleanliness of dishes, cleanliness of crew clothes. In the II quadrant, appropriate temperature, appropriateness of meal distribute time, cleanliness of the meal were found. So, the airline managers should have the most interest in these attributes and had to improve first. The quadrant III showed meal quantity, liquor diversity, polite attitude, immediate response to the meal, knowledge of the meal, meal freshness. Lastly, the quadrant IV showed a variety of beverage and special meal order. It is considered that resource allocation is necessary for minimizing the amount of resources invested to the quadrant IV, and then it should be allocated the quadrant II, which is high in importance but low in performance.

Effects of Dietary Mugwort on Nutritional Composition and Physicochemical Characteristics of Thawed Hanwoo Beef (쑥의 급여가 동결 한우육의 성분조성 및 해동 후 물리화학적 특성변화에 미치는 영향)

  • Moon, Yoon-Hee
    • Journal of the East Asian Society of Dietary Life
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    • v.22 no.2
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    • pp.290-297
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    • 2012
  • The nutritional composition of thawed Hanwoo beef fed no mugwort (T0) and thawed Hanwoo beef fed mugwort (T1) were analyzed after freezing at $-20^{\circ}C$ for 12 months. Also the effect of feeding mugwort was investigated by comparing physicochemical and palatability changes by chilling the beef after thawing. There were no significant differences in general components of T0 and T1 Hanwoo beef. Among the minerals, there were no significant differences in the contents of Ca, P, K, Mg and Zn, however Na content in T0 and Fe content in T1 were significantly higher. The total amino acid did not show a significant difference but leucine was found to be higher in T0 than T1, and glycine, cysteine, histidine and arginine were higher in T1 than T0. Regarding fatty acids, stearic acid was higher in T0, while palmitoleic acid, oleic acid and total unsaturated fatty acid was significantly higher in T1. The hardness value became lower by chilling after thawing regardless mugwort consumption, and therefore the tenderness improved. The freshness, fat rancidity and antioxidant activity of thawed Hanwoo beef changed more slowly for T1 than T0, which indicates that feeding mugwort had a positive effect. There were no significant differences in taste, juiciness, tenderness or and palatability of the cooked beef between T0 and T1 for both 0 days and 3 days after thawing. However, the aroma of cooked T1 beef was significantly superior.

The change of amino acid content in fruit-body of winter mushroom according to the storage period and strains (팽이버섯의 저장기간 및 품종별 자실체내의 아미노산 함량 변화)

  • Jhune, Chang-Sung;Yun, Hyung-Sik;Leem, Hoon-Tae;Gong, Won-Sik;Sung, Gi-Ho;Cho, Jae-Han;Yoo, Kwan-Hee;Park, Ki-Moon
    • Journal of Mushroom
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    • v.10 no.4
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    • pp.224-235
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    • 2012
  • Quality change of winter mushroom were investigated during storage and distribution phase as influenced by storage temperature. According to storage period and temperature, amino acids, were analysed and quantified with the mushroom fruiting bodies using HPLC and morphological characteristics were investigated. Characteristic changes of winter mushroom fruiting bodies were described as follows during storage according to the storage temperature. Looking at the results of the analyzed amino acid contents, temperature between $-1^{\circ}C$ and $4^{\circ}C$ was optimal condition for the storage. At $4^{\circ}C$, the chemical composition tended to be maintained. On the other hand, the results indicate the rapid loss of nutrition at $-1^{\circ}C$ within 7 days of storage. Exceptionally, proline was shown to be increased. Brown line mushroom had a larger loss than white line mushroom. Based on this result, brown line mushroom have shown significant differences among varieties. Therefore, winter mushroom should be stored at $4^{\circ}C$ to minimize nutrient loss and to maintain freshness and mushrooms should be consumed within 14 days after harvest.

Passion + Innovation + Marketing = A Successful New Market Development 『A Case of Pulmuone Fresh Ramen, 'Jayeonun Masitda'』 (열정 + 혁신 + 마케팅 = 신시장 창출 『풀무원 '자연은 맛있다'의 생라면 시장 개척 사례』)

  • Chu, Kyounghee;Lee, Doo-Hee;Park, Seong Yeon;Yoo, Shijin
    • Asia Marketing Journal
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    • v.13 no.3
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    • pp.233-248
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    • 2011
  • This case illustrates a story of passionate and innovative new market development by Pulmuone, a fresh food provider in Korea. The company has been successfully developing a new market by introducing a (non-frying) fresh ramen, 'Jayeonun Masitda - The Nature Is Tasty' in the packaged ramen market dominated by fried ones. In this case, a detailed new market development process by Pulmuone will be investigated including; company overview, a new product development process, marketing strategy formulation, marketing mix implementation, market performance, and future directions. Pulmuone has been making efforts to create a new product category by marketing non-frying ramens since 1995, but with a modest success. In 2011, Pulmuone finally succeeded to develop an innovative product, 'Jayeonun Masitda' that brought more health and nutrition conscious consumers' attention in the ramen market. The company intended to change the current competitive structure in the ramen market, i.e., from the strength of taste and the amount of ingredient to fried/non-fried and the freshness of ingredient. By this new positioning, Pulmuone aimed to reshaping the ramen market into competition between healthy and unhealthy ramens. Pulmuone has been successful in developing a new market. Sales revenue of 'Jayeonun Masitda' has been continuously increasing, and customers are found to be highly satisfied with the product resulting in a high repeat purchase rate. The company's successful new market development can be attributed to a faithful new product development process, innovative technology, an appropriate positioning strategy, and consistent marketing communication. In addition, Pulmuone's eco-friendly corporate image and the organization's passion to grow are also important factors for success of this new market development.

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Consideration of Metaphors Appeared on Shaun Tan's 3D Short Animation, (숀 탠 (Shaun Tan)의 3D 애니메이션 에 나타난 은유적 표현에 대한 고찰)

  • Jang, Eun-Young
    • Cartoon and Animation Studies
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    • s.23
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    • pp.1-17
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    • 2011
  • The paper analyzed the metaphoric expressions appeared in whose cinematic quality has been subjectively recognized on the global stage by winning the Oscar for Best Animated Short Film. Many contents and visual effects of the film were expressed with metaphor. Story and sequence were analyzed through the language system-based 'Conceptual Metaphor Analysis Framework'. In addition, characters have been analyzed through the 'Visual Metaphor Analysis Framework'. The framework is to analyze visual dimensions which are derived when concepts are structuredin animation. This paper has attempted to investigate and reveal patterns how animation self-organizes or how animation self-realizes through linguistic objectives. That is, it is to reveal how animation communicates with the audience from the metaphoric perspective among many conventional ones. In an animated film, metaphor is a fundamental means to connect fragmented images, produce a holistic view and therefore induce creative communication with the audience. The essential motive of metaphor which is expressed in various styles in is modern people's feeling of loss and sense of missing something. Train, bottle top, food, lost-and-found center, in-between space and lost items have significance across the movie. According to an analysis, metaphor offers simplicity and freshness as an aesthetic function. In addition, the metaphor expresses lengthy contents and various meanings implicitly, delivering an economic function. With a creative function, metaphor is a tool to generate new meanings. In other words, an animated film is a medium to inspire and move the general public as a means of communication and thinking, not just an entertainment for young generations. After all, metaphoric expressions have been used to deliver diverse and deep meanings in animated films.