• Korean Journal of Agricultural Science
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• v.34 no.1
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• pp.67-75
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• 2007

The effect of irradiation on the quality characteristics of pale-soft-exudative (PSE) pork was studied. The pork loin with severe PSE appearance was selected by meat grader,irradiated at 0 and 4.5 kGy, and meat quality characteristics including pH, color, lipid oxidation development, microbial and sensory quality were analyzed during 2 weeks of storage at $4^{\circ}C$. The pH values of non-irradiated and 4.5 kGy-irradiated PSE raw pork loin was not different. Hunter color $a^*$-value, which represents redness of meat surface showed significant increase (P<0.05) in irradiated PSE pork loin. This higher Hunter color $a^*$-value maintained during 2 weeks of storage. By 4.5 kGy of irradiation, approximately 2 log reduction of total aerobic bacterial counts was achieved during 2 weeks of storage when compared with non-irradiated control. Sensory panelists prefer the color of irradiated PSE meat than that of non-irradiated control because of redness. From the results, it is possible to use an irradiation technology to improve not only microbiological safety but also the color of meat which has severe defect such as PSE.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2005.10a
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• pp.103-106
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• 2005

흑염소 육의 조단백질 함량은 약 21,1%, 조지방 함량은 약 3.7%로 단백질 함량은 우육과 유사하였으나 지방함량이 다른 축종에 비해 낮게 나타났다. 지방산 중 포화지방산은 등심부위가 47.62% 볼기부위가 41.88%였으며 불포화지방산 중 oleic acid가 등심(46.59%) 및 볼기(50,29%)였다. 흑염소 육의 콜레스테롤 함량은 35.73${\sim}$37.48 mg/100g으로 우육 및 돈육과 비해 현저하게 낮게 나타났다. 흑염소 육의 아미노산은 glutamic acid가 가장 높게 나타났으며 필수아미노산 비율은 약 50.3%이었다. 미네랄 함량은 칼륨>인>나트륨>마그네슘>칼슘>아연 >철>구리>망간 순이었다. L-carnitine 함량은 20.8${\sim}$26.0mg/100g의 범위로 우육과 돈육보다 높게 나타났다. 결국, 흑염소육은 무기질 함량도 높으며 특이적인 생리활성 영양성분인 carnitine도 타육에 비해 높은 경향을 보여서 영양학적으로 저지방 고단백질의 육류로 판단되었다.

• Proceedings of the Korean Society of Life Science Conference
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• 2005.04a
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• pp.213-213
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• 2005

• Korean Journal of Food Science and Technology
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• v.31 no.3
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• pp.746-750
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• 1999

The effects of electron-beam irradiation on the microbial and sensory qualities of pork loins were studied. The pork loins were aerobically packed in polyethylene films and exposed to absorbed doses of electron-beam at 0, 0.5, 1 and 2 kGy in ambient temperature. All samples were stored at $4{\pm}1^{\circ}C$. As an irradiation dose increased, decontaminating effects increased in terms of total microbial count, lactic acid bacteria and psychrotrophs during storage. All difference degrees in the triangle test were very low levels. In the descriptive analysis, Low dose irradiation did not affect aroma, off-flavor and acceptability in fresh and cooked meats.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2006.05a
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• pp.161-165
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• 2006

삼겹에 있어서 SA, 양파 그리고 마늘의 첨가로 FFA 값은 저장 28일에 대조구와 비교하여 각각 14, 31 그리고 53% 감소하였으나 등심에서는 효과가 없었다. 삼겹에서 과산화물의 생성률은 SA처리구를 제외하고 천연소제 첨가에 의해 감소되었다. 그러나 등심에서는 마늘을 제외하고는 천연소제 첨가에 의한 효과는 없었다. 삼겹과 등심 모두에서 휘발성 산화 생성물들은 천연소제에 의한 주목할 만한 효과는 없었다. 삼겹에서 마늘과 양파는 저장성을 연장시킴으로써 항미생물 효과를 보였다. 본 연구에 사용된 천연 물질들은 항산화 및 항미생물 효과를 보였다. 특히 마늘은 지방을 포함하는 식품에서 안정화를 위한 천연 자원으로써 고려되어져야 할 것이다.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2002.11a
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• pp.141-141
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• 2002

• Journal of Life Science
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• v.25 no.10
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• pp.1139-1147
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• 2015

This study was conducted to evaluate the effects of injection of red wine on physico-chemical characteristics of pork loin ham during cold storage. The pork loin hams were manufactured by injection of red wine as Control (0%), T1 (3%), T2 (6%), T3 (9%), and were analyzed, while stored at 10±1℃ for 4 weeks, respectively. As a result of the injection of red wine, the pH values of pork loin ham were reduced, whereas WHC values were increased compared to the control (p<0.05). However, there was no significant difference in cooking loss. In meat color, as injection of red wine increased, the lightness values were reduced, and redness values were increased during 4 weeks. In texture profile analysis, values in shear force, brittleness, gumminess and adhesiveness were increased as red wine injection increased (p<0.05). But, injection of red wine reduced the VBN values until 2 weeks. Treatment groups with more than 3% red wine showed lower TMC values than control until 3 weeks (p<0.05), whereas Lactobacillus counts were significantly increased by injection of red wine since 2 weeks. In conclusion, red wines showed the effect of increasing the quality characteristics related to physical and storage in pork loin ham during cold storage, and proper injection level was 3% when pork loin ham processed.

• Food Science of Animal Resources
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• v.22 no.2
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• pp.151-157
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• 2002

The Korean fresh pork loins in vacuum packaged were obtained from three different Korean export companies and investigated for their proximate composition and physico-chemical characteristics. The fresh pork loins were stored at 2$^{\circ}C$ for 50 days and analyzed with an interval of 5∼10 days. In proximate analyses, the moisture contents of pork loins from the company I were higher, the protein contents from the company II were higher, and fat contents from the companies II and III were higher compared to those from the other companies. The pH of loins increased as storage period increased. The shear value of loins from company II showed significantly lower level and tended to decrease during storage. However, the water holding capacity and the purge loss of loins from company II increased during storage periods.

• Food Science and Preservation
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• v.24 no.2
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• pp.168-180
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• 2017

This study was performed to determine the rapid thawing method for reducing the thawing time of frozen pork loins and to examine the effects of supercooling on the microbiological, physicochemical, and sensory qualities of fresh and frozen-thawed pork during storage at -1.5, 4, and $15^{\circ}C$. Forced-air thawing at $4^{\circ}C$ was the most time-consuming process, whereas radio frequency thawing time was the shortest by dielectric heating. The supercooling storage temperature was chosen to be $-1.5^{\circ}C$ because microstructural damages were not observed in the pork sample after cooling at $-1.5^{\circ}C$ for 24 h. Fresh or frozen-thawed pork loins stored at $-1.5^{\circ}C$ had lower drip loss and total volatile base nitrogen, thiobarbituric acid-reactive substance, and Hunter b* levels than loins stored at 4 and $15^{\circ}C$. In addition, the least degree of increase in preexisting microorganisms counts of the fresh or frozen-thawed pork loin samples was obtained during supercooled storage at $-1.5^{\circ}C$. Sensory quality results of fresh and frozen-thawed pork loin samples stored at $-1.5^{\circ}C$ showed higher scores than the samples stored at 4 and $15^{\circ}C$. These data indicate that supercooling at $-1.5^{\circ}C$ in the meat processing industry would be effective for maintaining the quality of pork meats without ice crystal nucleation and formation.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 1998.10a
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• pp.125-125
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• 1998