• Title/Summary/Keyword: Food material

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Study on Quality and Sensory Characteristics of Seolgi Ttueok Added with Geuk (게욱 첨가 설기떡의 품질특성 및 관능적 특성 연구)

  • Park, Eunhye;Kim, Myunghee
    • Journal of the Korean Society of Food Culture
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    • v.33 no.2
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    • pp.142-148
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    • 2018
  • In this study, Seolgi Tteok was made in order to increase consumption of Geuk, which possesses numerous nutritional advantages, and its optimum content as a new food coloring for rice cake was determined. Quality characteristics and quantitative description analysis (QDA) of Seolgi Tteok, in which Geuk was added at 0, 4, 8, and 12%, was conducted. Consumer acceptability test was also conducted. As the amount of added Geuk increased, moisture content of Seolgi Tteok increased as well. Brightness (L-value) was the highest in the control group, and more Geuk resulted in higher values of red index (a-value) and yellow index (b-value), which corresponded to the results of the sensory evaluation. As result of the mechanical texture measurement, only adhesiveness and resilience show a significant difference. As a result of the QDA, 17 sensory characteristic terms were assessed. Among them, only 13 showed a significant difference. Among the different sensory characteristics, almost all of them except for taste characteristics were significantly influenced by the amount of Geuk. The aroma and taste of Geuk were not largely influenced. It can be suggested that Geuk is not a factor that strongly influences flavor. In conclusion, Geuk does not have a strong influence on the taste or aroma of Seolgi Tteok but does on color characteristics. It can be suggested that Geuk is qualified as a coloring material for food, and the reasonable addition amount is 8%. As a result of this research, Geuk can be considered as a coloring material for other types of rice cake, traditional Korean sweets, and even confectioneries as well as for Seolgi Tteok. This implies that Geuk can be utilized to develop various new products as a coloring material with abundant nutritional content, which will contribute to the promotion of Geuk consumption.

Improvement in Storabilities of Rice Bran Protein Film Containing Bacteriocin Produced by Pseudomonas putida 21025 (Pseudomonas putida 21025가 생성하는 bacteriocin을 이용한 항균성 미강 단백질 필름의 저장성 향상)

  • 김은정;김경미;배동호
    • Food Science and Preservation
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    • v.10 no.3
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    • pp.411-416
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    • 2003
  • An effort was attempted to utilize an under-utilized protein source, rice bran protein, in coating or wrapping food material for the purpose of protection them from oxidation and bacterial infection. However, the utilization of rice bran protein as a food coating material is limited because the rice bran protein coating material itself can be spoiled by a bacterial infection. Therefore, this study was conducted to produce the economical and antibacterial rice bran protein film by utilizing rice bran and bacteriocin-producing microorganism. Bacteriocin produced by Pseudomonas putida 21025 was partially purified after 33h of shaking incubation at 30$^{\circ}C$. The amount of amino-type nitrogen did not increase in the rice bran protein film containing the bacteriocin any more after gradual increase upto the content of 0.22% for 8 days, while that without the bacteriocin increased continuously, implying that application of the bacteriocin to the rice bran had positive effects on prolonging the shelf-life of not only film itself but also the foods wrapped by this film.

Quality evaluations of bell pepper in cold system combined with TEM (thermoelectric materials) and PCM (phase change material) (PCM을 장착한 열전소자 냉각시스템의 저장 중 피망의 품질 평가)

  • Sung, Jung-Min;Kim, So-Hee;Kim, Byeong-Sam;Kim, Jong-Hoon;Kim, Ji-Young;Kwon, Ki-Hyun
    • Food Science and Preservation
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    • v.23 no.4
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    • pp.471-478
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    • 2016
  • For the distribution of fresh produce, the thermoelectric cooling system combined with thermo electric materials (TEM) and phase change material (PCM) was studied. The PCM used this study was produced by in-situ polymerization technology which referred microencapsulation of hydrocarbon (n-tetradecane and n-hexadecane). In this study, quality characteristics of bell peppers in thermoelectric cooling system combined with TEM and PCM were analyzed and control was placed in an EPS (expanded polystyrene) box. As a result of quality characteristics analysis, weight of bell peppers decreased and moisture content of bell peppers was 90.96~94.43% during storage. Vitamin C content of bell pepper decreased during storage and reduction ratio of control was higher than that of BPT-5 treatment(bell pepper in thermoelectric cooling system with PCM which is kept the temperature at $5^{\circ}C$). The result of color value, on 21 day, ${\Delta}E$ value of BPT-5 treatment was 5.05 while that of control was 41.8. On 21 day, total bacteria count of BPT-5 treated bell pepper shown less than that of control. In conclusion, it suggested that the thermoelectric cooling system combined with PCM improved quality of fresh produce during transportation and storage.

Development of home meal replacement products by food processing and packaging technology (식품 가공기술과 포장기술을 활용한 가정대용식 제품 개발)

  • Yu, A-Reum;Choi, Yun-Sang;Hong, Jung Sun;Choi, Hee-Don
    • Food Science and Industry
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    • v.50 no.3
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    • pp.39-50
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    • 2017
  • In order to secure competitiveness of the home meal replacement (HMR) industry from a long-term perspective, development of packaging and processing technologies must be achieved. The development of technology that can secure freshness, nutrition, and taste but secures the shelf life is the key to the future growth of HMR. The future of HMR can be considered in terms of nutrition, environment and safety. From the nutritional point of view, it is expected that development of healthy HMR such as low-salt, low-sugar, low-fat, and high fiber and premium HMR with functional ingredient enhanced, and personalized HMR for silver, infant and patients will be done. And it is expected that development of HMR utilizing environmentally friendly food or local food, development of energy reduction and environmentally friendly disinfection technology, development of environmentally friendly packaging material, and providing information on HMR preparation using QR code and RFID from the environmental and safe point of view.