• Title/Summary/Keyword: food resources

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Effect of Pre-rigor Salting Levels on Physicochemical and Textural Properties of Chicken Breast Muscles

  • Kim, Hyun-Wook;Hwang, Ko-Eun;Song, Dong-Heon;Kim, Yong-Jae;Ham, Youn-Kyung;Yeo, Eui-Joo;Jeong, Tae-Jun;Choi, Yun-Sang;Kim, Cheon-Jei
    • Food Science of Animal Resources
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    • v.35 no.5
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    • pp.577-584
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    • 2015
  • This study was conducted to evaluate the effect of pre-rigor salting level (0-4% NaCl concentration) on physicochemical and textural properties of pre-rigor chicken breast muscles. The pre-rigor chicken breast muscles were de-boned 10 min post-mortem and salted within 25 min post-mortem. An increase in pre-rigor salting level led to the formation of high ultimate pH of chicken breast muscles at post-mortem 24 h. The addition of minimum of 2% NaCl significantly improved water holding capacity, cooking loss, protein solubility, and hardness when compared to the non-salting chicken breast muscle (p<0.05). On the other hand, the increase in pre-rigor salting level caused the inhibition of myofibrillar protein degradation and the acceleration of lipid oxidation. However, the difference in NaCl concentration between 3% and 4% had no great differences in the results of physicochemical and textural properties due to pre-rigor salting effects (p>0.05). Therefore, our study certified the pre-rigor salting effect of chicken breast muscle salted with 2% NaCl when compared to post-rigor muscle salted with equal NaCl concentration, and suggests that the 2% NaCl concentration is minimally required to ensure the definite pre-rigor salting effect on chicken breast muscle.

Anti-oxidative and Anti-allergic Effects of Salvia plebeia R. Ethanol Extracts (배암차즈기(Salvia plebeia R.) 에탄올 추출물의 항산화 및 항알레르기 효과)

  • Choi, Bong-Kyoum;Lee, Seon-Hye;Kim, Nam-Seok;Cho, Soo-Yeon;Jang, Hwan-Hee;Kim, Jung-Bong;Lee, Young Min;Yoon, Sungeun;Lee, Sung-Hyen
    • Korean Journal of Pharmacognosy
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    • v.45 no.4
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    • pp.332-337
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    • 2014
  • The Salvia plebeia R. which is the biennial plant belonging to the labiatae department, grows widely in Korea. This study was performed to evaluate the antioxidant activities and anti-allergic effects of Salvia plebeia R. leaves (SPLE) or roots (SPRE). Using ethanol extracts, both leaves and roots induced significant radical scavenging activity against DPPH and ABTS radicals in a dose dependent manner (p<0.05). Superoxide dismutase (SOD)-like activity of SPLE was significantly higher than that of SPRE at all concentrations. Treatment of the RBL-2H3 cells with SPLE and SPRE in vitro decreased ${\beta}$-Hexosaminidase release and significantly inhibited IgE-antigen complex-mediated IL-4 and TNF-${\alpha}$ mRNA expression in RBL-2H3 cells. These findings suggest that Salvia plebeia R. can protect or reduce allergic asthma through high antioxidant and anti-allergic reactions.

Combined Effect of Kimchi Powder and Onion Peel Extract on Quality Characteristics of Emulsion Sausages Prepared with Irradiated Pork

  • Lee, Soo-Yoen;Kim, Hyun-Wook;Hwang, Ko-Eun;Song, Dong-Heon;Choi, Min-Sung;Ham, Youn-Kyung;Choi, Yun-Sang;Lee, Ju-Woon;Lee, Si-Kyung;Kim, Cheon-Jei
    • Food Science of Animal Resources
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    • v.35 no.3
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    • pp.277-285
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    • 2015
  • This study was conducted to investigate the effects of kimchi powder and onion peel extract on the quality characteristics of emulsion sausage manufactured with irradiated pork. The emulsion sausages were formulated with 2% kimchi powder and/or 0.05% onion peel extract. The changes in pH value of all treatments were similar, depending on storage periods. The addition of kimchi powder increased the redness and yellowness of the emulsion sausage. The addition of onion peel extract decreased the thiobarbituric acid reactive substances value of the emulsion sausages prepared with irradiated pork. The volatile basic nitrogen value of the emulsion sausage prepared with kimchi powder was the highest, whereas that of the emulsion sausage prepared with onion peel extract was the lowest. The treatment without kimchi powder or onion peel extract and the treatments prepared with onion peel extract showed lower microbial populations than the other treatment. Sensory evaluations indicated that a higher acceptability was attained when kimchi powder was added to the emulsion sausages manufactured with irradiated pork. In conclusion, our results suggest that combined use of kimchi powder and onion peel extract could improve quality characteristics and shelf stability of the emulsion sausage formulated with irradiated pork during chilled storage.

The Safety of Food Developed by Gene Manipulation (유전자 재조합 식품의 안전성)

  • 최원상
    • Journal of Food Hygiene and Safety
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    • v.14 no.2
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    • pp.216-225
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    • 1999
  • Safety of present food has been accepted on the basis of extensive use experience for a long time. Many food resources have been developed by traditional techniques without any significant adverse impacts on the safety of food. Recently recombinant DNA techniques are being used to develop new food resources. These techniques enable developers to make specific genetic modifications in food resources that introduce substances that could not be introduced by traditional methods. With these techniques food resources are being to resist pests and disease, to tolerate herbicides, and to have improved characteristics for food preservation and nutritional contents. Because the properties of an organism results from interaction between biochemical pathways controlled by many genes, the genes conferring these traits usually encode directly responsible proteins for the new trait as well as proteins that indirectly modify carbohydrates or lipids in food. Therefore, this kind of food is regarded as new food that has not been existed before, and the safety of the food developed by recombinant DNA techniques should be evaluated upon scientific basis. In this paper, the issues upon safety of the food developed by gene manipulation are diseased in terms of composional changes that can be introduced, potential food safety harzards that might arise, present status of safety regulations in various countries and international organizations, and suggestions for the safety regulation in Korea.

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Effect of Dietary Fiber Extracted from Algelica keiskei Koidz on the Quality Characteristics of Chicken Patties

  • Choi, Yun-Sang;Kim, Hyun-Wook;Hwang, Ko-Eun;Song, Dong-Heon;Jeong, Tae-Jeon;Kim, Young-Boong;Jeon, Ki-Hong;Kim, Cheon-Jei
    • Food Science of Animal Resources
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    • v.35 no.3
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    • pp.307-314
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    • 2015
  • In this study, we evaluated the effects of dietary fiber extracted from Algelica keiskei Koidz on the chemical composition, cooking characteristics, and sensory properties of chicken patties. The chicken patties with Algelica keiskei Koidz dietary fiber had significantly higher moisture and ash content, and yellowness than the control sample (p<0.05). Energy value, cooking loss, reduction in diameter, reduction in thickness, lightness, redness, hardness, cohesiveness, gumminess, and chewiness of the control samples was significantly higher than chicken patties with Algelica keiskei Koidz dietary fiber (p<0.05). The sensory evaluation indicated that the greatest overall acceptability in chicken patties was achieved at Algelica keiskei Koidz dietary fiber levels of 1% and 2%. Chicken patties supplemented with 2% Algelica keiskei Koidz dietary fiber had improved quality characteristics.