• Title/Summary/Keyword: fresh and salt-stored

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Quality Changes of Fresh Green Pepper Paste during Storage (생청고추 페이스트의 저장 과정 중 품질 변화)

  • 정재홍
    • The Korean Journal of Food And Nutrition
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    • v.11 no.2
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    • pp.216-220
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    • 1998
  • To maintain flavor and color of fresh green pepper, the fresh green pepper paste was directly prepared from fresh green pepper. The characteristic of fresh green pepper paste and processing properties were investigated, and the effect of salt, glucose, acid and heat on product quality during processing and storage were studied. After the processed fresh green pepper paste was stored at 3$0^{\circ}C$ and 5$^{\circ}C$ without light for 6 months. The weight and pH of pericarp were 86% of total and 4.5~5.0, respectively. Addition of 10% salt, 5% glucose, and 0.1 dl-malic acid to the fresh green pepper paste maintain flavor of fresh green pepper could be preserved for 6 months at 5$^{\circ}C$. Panel test showed fresh green pepper paste which was made of 10% salt, 5% glucose and 0.1% dl-malic acid to the fresh green pepper was quite acceptable.

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Quality Changes of Fresh Garlic Paste during Storage (생마늘 페이스트의 저장 과정 중 품질 변화)

  • 정재홍
    • The Korean Journal of Food And Nutrition
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    • v.11 no.3
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    • pp.278-282
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    • 1998
  • An attempt was made in this study to investigate the possibility of processing fresh garlic into an fresh garlic paste. The characteristics of fresh garlic paste and processing properties were investigated and the effect of salt, maltodextrin, acid and heat on product quality during storage were studied. After the processed fresh garlic paste was stored at 3$0^{\circ}C$ and 5$^{\circ}C$ without light for 6 months. The weight and pH of colve were 93% of total and 5.95, respectively. Addition of 10% salt, 10% maltodextrin, 01.% dl-malic acid, and heat on fresh garlic paste maintain color of fresh garlic could be preserved for 6 months at 5$^{\circ}C$. Judging from thiosulfinate and pyruvate content, and sensory evaluation, quality damage of fresh garlic paste which was make of 10% salt, 10% maltodextrin, 0.1% dl-malic acid, and heat on fresh garlic paste hardly occurred at 5$^{\circ}C$ but occurred considerable level at 3$0^{\circ}C$ during storage for 6 months.

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Study on the Effects of Morphology, Preservation and Reproductive Cycle of In Vitro Developmental Rate of Cats Oocytes (난자의 형태와 난소의 보존 및 채취시기가 고양이 난자의 체외발생에 미치는 영향에 관한 연구)

  • 전연화;이명헌;김상근
    • Journal of Embryo Transfer
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    • v.18 no.2
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    • pp.109-113
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    • 2003
  • The study was carried out to investigate the effects of morphology, preservation and reproductive cycle of oocytes in vitro maturation of cats oocytes and development of IVM embryos. The results were summarized as follows : 1. Nuclear status of GV and MI of in vitro cultured(24 h) oocytes with and whithout cumulus cells were 74.3% and 25.7%, 28.6% and 11.4%, 77.1% and 5.7%, respectively, The rate of oocytes with cumulus cells was higher than that of denuded oocytes. 2. Nuclear status of GV and MI of in vitro cultured(24 h) oocytes recovered from ovaries collected at different stages of the reproductive cycle(inactive, follicular and luteal) were 88.6% and 6.5%, 60.0% and 11.4%, 77.1% and 5.7%, respectively. 3. Nuclear status of fresh and salts-stored oocytes with and whithout cumulus cells were 74.3%, 25.7% and 37.1%, 11.4% and 57.1%, 13.3%, 17.1%, 3.3%, respectively. The rate of oocytes with cumulus cells(13.3%∼74.3%) was higher than that of denuded oocytes(3.3%∼57.1%).

Establishment of Long-term Storage Condition of Fresh Red Pepper Paste (생홍고추 페이스트의 장기 저장조건 설정)

  • Kwon, Dong-Jin;Jo, Jin-Ho;Kim, Hyun-Ku;Park, Mu-Hyun
    • Korean Journal of Food Science and Technology
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    • v.22 no.4
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    • pp.415-420
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    • 1990
  • To prevent red pepper from post harvest decay and to reduce the labor and drying expenses, the red pepper paste was directly prepared from fresh red pepper. The characteristics of red pepper paste and processing properties were investigated, and the effect of salt and heat on product quality during processing and storage were studied. After the processed red pepper paste was stored at room temperature, $5^{\circ}C\;and\;-3^{\circ}C$ without light for 6 months, kimchi was prepared with the stored red pepper paste to evaluate any quality change. The weight and pH of pericarp were 73.2% of total and 5.0, respectively. Addition of 10% salt to the paste decreased the pH of paste, reducing the sterilization time down to 10 min against growth of Clostridium botulinum. Thermal diffusivity of paste after pasteurization was $1.190{\times}10cm^{-7}/sec$, which was lower than control, probably due to air in pouch. The red pepper paste with 10% salt added, followed by sterilization for 10 min, could be preserved for over 6 months at $5^{\circ}C$.

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Processing of Low Salt Mackerel Fillet and Quality Changes during Storage (저염 고등어 Fillet의 제조 및 저장중 품질변화)

  • Lee, Kang-Ho;Hong, Byeong-Il;Jung, Byung-Chun
    • Korean Journal of Food Science and Technology
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    • v.30 no.5
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    • pp.1070-1076
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    • 1998
  • The processing conditions of low salt mackerel (Scomber japonicus) fillet was investigated, in which fresh mackerel was filleted, salted in brine until the expected salt concentration reached, dried with cool air (3 m/sec, $10{\sim}20^{\circ}C$), and finally packed individually in polyvinyl chloride film. Salting time and salt concentration of brine decided the final salt level penetrated into the fillet. As the final salt level was fixed to $0.8{\sim}1.0%, salting for $15{\sim}20 hours with 5% or 10% brine at $5^{\circ}C$ was enough to get that level of salt. Formation of histamine during salting was negligible. Changes in VBN, salt soluble proteins, and histamine formation of salted mackerel fillet during the storage occurred more rapidly in cases of storage at $5^{\circ}C than af $-2^{\circ}C and $-20^{\circ}C. Oxidation of lipid during the storage progressed, however it was delayed longer then 100 days in case of storage at $-20^{\circ}C. Addition of sodium erythrobate or ginger extracts could provide some extent of browning retardation. The shelf-life of the salted mackerel fillet based on panel scores of brown color and rancidity appealed to be 14 days when stored at $5^{\circ}C, and more than 28 days in case of storage at $-2^{\circ}C and about 3 months stored at $-20^{\circ}C.

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Change of Fibrinolytic and Antioxidative Activities of Codonopsis lanceolata According to Various Storage Conditions, and Heat or Salt Treatments

  • Oh Hae-Sook;Choi Moo Young;Kim Jun-Ho
    • Biomedical Science Letters
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    • v.11 no.1
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    • pp.63-69
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    • 2005
  • We investigated the changes of fibrinolytic and antioxidative activities of wild or cultivated Codonopsis lanceolata, which were packed in woven polypropylene (WP) film or low density polyethylene (LDPE) film and stored for 0, 15, and 30 days at refrigerated $(2\~4^{\circ}C)$ or room $(l8\~20^{\circ}C)$ temperature (So we have 16 samples, and wrote them as the abbreviated words such as W-WP-RE-15, W-WP-RO-15, W-LDPE-RE-15, W-LDPE-RO-15, W-WP-RE-30, W-WP-RO-30, W-LDPE-RE-30, W-LDPE-RO-30, C-WP-RE-15, C-WP-RO-15, C-LDPE-RE-15, C-LDPE-RO-15, C-WP-RE-30, C-WP-RO-30, C-LDPE-RE-30, C-LDPE-RO-30). Fibrinolytic activity of fresh Codonopsis lanceolata cultivated in the mountain or field were 0.8 unit (plasmin unit/ml) or 7.3 units, respectively. In descending order, the activities of wild Codonopsis lanceolata stored for 15 days were as followed; LDPE-RE (0.70 unit), WP-RO (0.52 unit), WP-RE (0.45 unit), and LDPE-RO (0.30 unit). After 30 days, fibrinolytic activities of them decreased to 0.47 unit (LDPE-RE), 0.28 unit (WP-RO), 0.21 unit (WP-RE), and 0.30 unit (LDPE-RO). Considering from the point of fibrinolytic activity, the optimal storage condition of wild Codonopsis lanceolata was packing with LDPE film and storing at $4^{\circ}C$. The change of fibrinolytic activities of Codonopsis lanceolata cultivated in the field revealed the similar trend as wild samples, but the fibrinolytic activities of 30 days-stored samples were maintained better than the wild Codonopsis lanceolata. Fibinolytic activity of wild Codonopsis lancealata was increased by heating for 5 min at $100^{\circ}C$ and decreased by addition of NaCl. Antioxidative activities of Codonopsis lanceolata were also compared from the electron donating activity. Fresh Codonopsis lanceolata had about $70\%$ of electron donating activity. Independent of cultivation area, electron donating activity dropped to $19\~74\%$ (wild Codonopsis lanceolata) and $27\~59\%$ (cultivated Codonopsis lanceolata) during 15 days storage. But after 30 days storage, we obtained the unexpected results, which meant that the activities were higher activities than 15 days-stored samples or even though the fresh samples. In general, Codonopsis lanceolata could maintain antioxidative activities most strongly with LDPE film and chilled condition.

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Effects of Salinity and Temperature on the Survival of Vibrio vulnificus (염도와 수온의 변화가 Vibrio vulnificus의 생존에 미치는 영향)

  • KIM Young-Man;KWON Ji-Young
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.30 no.3
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    • pp.367-376
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    • 1997
  • Vibrio vulnificus is a gram-negative, halophilic, oxidase-positive, lactose-positive, motile, rod shaped bacterium that has been associated with primary septicemia and wound infection. Elucidating the growth and survival of V. vulnificus in ecological conditions is of great importance to develop sanitary measure against this microorganism. Thus we simulated the ecological conditions and evaluated the effect. About $10^5\;CFU/ml$ of V. vulnificus was inoculated to fresh water, brackish water $(1\%\;NaCl)$, sea water $(3\%\;NaCl)$, and bottom deposit solution. The same concentration of V. vulnificus was also inoculated to distilled water, $1\%\;NaCl$ solution and $3\%\;NaCl$ solution as controls. These were stored at 4, 15 and $25^{\circ}C$, respectively and were used to assess the effects of temperature and salinity on the survival of V. vulnificus. In fresh water V. vulnificus could not survive regardless of storage temperature. In case of brackish water and sea water survival time of V. vulnificus was the longest at $25^{\circ}C$, and the number of V. vulnificus was decreased most rapidly at $4^{\circ}C$. V. vulnificus survived longer in brackish water than in any other conditions. In bottom deposit solution containing brackish water, the survival time of V. vulnificus was longer and the rate of decline was slower than that in brackish water. These results indicate that both biological and physicochemical factors such as temperature and salinity could affect survival of V. vulnificus. V. vulnificus, damaged in normal fresh water, did not grow on TCBS agar of selective plating medium but grew on BHI agar plate; However, V. vulnificus was recovered by addition of salt and nutrient materials.

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A Study on Vietnam Food Culture -Fermented Fish sauce Culture and Daily meal- (베트남의 식문화에 관한 연구 -어장문화와 일상식-)

  • Cho, Hoo-Jong;Yoon, Duk-Ihn
    • Journal of the Korean Society of Food Culture
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    • v.12 no.3
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    • pp.289-299
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    • 1997
  • This study was performed with survay in the field and literature. The result were; 1. In Vietnam, They took their meal in three times a day. They have taken Nuoc nam (fish sauce) with sliced red pepper, half a lime, etc... in every day every night. Fish Sauce was prepared with small fish (generally fresh- water fish), the same amount of salt, and stored in 8 months, and made filltered fluid. It's Nuoc mam. They have gained protein sauce from it. 2. Their basic menu were composed with rice, soup, food with marine products and meat (generally pork), various vegetables, tropical fruit. 3. Food of cereals were Com Trang (white rice), Pho (rice noodle), Chao (rice gruel), Banh Trang (rice paper), Banh mi (bread) etc... Food of meat were Ho sua, Banh bao chien (barbecued little pork), Suon Nuon (grilled pork), Cha Lua (sausage of pork) etc..., Thit be nhung (grilled beef, Dog meat, Chicken, Duck, Frog. Food of fish were generally fresh-water fish, Ca Chien (grilled fish), Canh chua (soup with sour taste), Ca chem chung (steamed fish with fragrant vegetable), Lobster, Crab, Oyster, Cuttlefish, Shellfish, etc... Food of vegetables were Doa Hanh (Kimchi with a welsh onion), Rau xao hon hop (roasted vegetables), Goi Tom (salad), Canh he dau hu (soup) etc..., and They took much food of trophical fruit, Tra (Tea), Coffee, Lua Moi (distilled liquor). 4. For example, Their Daily meal were composed of Sup Bong Ca (Soup), Heo Sua, Banh Bao Chien (barbecued little Pork), Top Hap (steamed shrimp), Cua (steamed Crab), Luon Um (bioled a fresh-water eel), Lau Thap Cam, Hai Sam Sac Nam Dong Co, Trai Cay.

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Microbial, Physicochemical, and Sensory Characteristics of Quality Grade 2 Beef Enhanced by Injection of Pineapple Concentrate and Honey

  • Yoon, Ji Won;Lee, Da Gyeom;Lee, Hyun Jung;Choe, Juhui;Jung, Samooel;Jo, Cheorun
    • Food Science of Animal Resources
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    • v.37 no.4
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    • pp.494-501
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    • 2017
  • This study investigated the effect of injecting pineapple concentrate and honey into low marbled beef in order to enhance its sensory qualities, particularly tenderness and flavor, without compromising its fresh appearance. Beef loin was injected with a solution of 6.0% pineapple concentrate, 2.5% honey, 0.5% monosodium L-glutamate, 0.5% phosphate, and 0.3% salt (w/w) to 120% (w/w) of initial meat weight and stored for 14 d. Non-injected beef loin served as a control. Total aerobic bacterial counts, surface meat color, shear force, reducing sugar content, and sensory evaluation of the beef were analyzed at 0.5, 7, and 14 d of storage. Injection did not affect the total aerobic bacterial counts or color of the beef. However, injection increased the stability of meat color, compared with that of the control, during storage. The shear force value was significantly lower in the injected beef than that in the control. The injected beef had a significantly higher reducing sugar content compared with that of the control. In sensory evaluation, tenderness, juiciness, flavor, and overall acceptance of the injected beef were significantly higher than those of the control at 0.5 d. In conclusion, injection of pineapple concentrate and honey can improve the sensory qualities of low marbled beef, during short storage periods, without changing the fresh appearance of the beef.

Chemical Changes of Low Salt-dried Yellow Corvenia Muscle During Frozen Storage (저염건 조기의 냉동저장 중 화학적 변화)

  • EUN Jong-Bang;LEE Jin-Cheol;CHUNG Dong-Ok
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.30 no.4
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    • pp.660-666
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    • 1997
  • Changes of chemical and nutritional composition were investigated in low salt-dried Yellow corvenia muscle during frozen storage at $-20^{\circ}C$. Moisture contort of Yellow corvenia was not significantly changed until after 5 months frozen storage. Salinity was $0.28\%$ in fresh Yellow corvenia and $2.30\%$ in the salted sample. Acidity of the fish muscle was increased in excess of 5 months storage. TBA value was increased by a little amount untel 1 month of storage and significantly incraeased in 3 months of storage. Free fatty acid was increased during frozen storage with rapid increase up to 1 month storage. VBN was increased after 1month storage and amino type nitrogen was increased in 5 months of storage. Major free amino acids were glutamic acid, alanine, glycine and lysine, and composition ratio of most free amino acids were not changed untel after 5 months storage. Polyenoic acid contents were decreased after storage and major fatty acids were palmitic acid (16 : 0), stearic arid (18 : 0) and major fatty acids were palmitic acid (16 : 0), stearic acid (18 : 0) and docosahexaenoic acid (22 : 6). From the results of chemical experiments, low salt-dried yellow corvenia would not be stored at $20^{\circ}C$ for more than 5 months.

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