• Journal of Life Science
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• v.14 no.1
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• pp.198-203
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• 2004

This study was carried out to investigate the effect of mugwort podwer and carcass grade on the shelf-life of pork patty. Pork patty was prepared by four types such as grade B pcrk patty without mugwort powder (A patty), grade B pork patty with mugwort podwer (B patty), grade I pork patty without mugwort powder (C patty) and grade E pork patty with mugwort powder (D patty) and the residual nitrite, surface color, pH, VBN (volatile basic nitrogen), TBARS (2-thiobarbituric acid reactive substances) and total bacterial counts of the sample were determined during storage at 4$^{\circ}C$. The residual nitrite of pork patties with mugwort powder was highly decreased until storage for 2 weeks, pork patties without mugwort powder highly decreased until storage for 4 weeks, therefore addition of mugwort powder reduced residual nitrite of pork patty. The L＊ value of pork patty was the highest at early stage of storage, pork patties with mugwort powder were lower than that of pork patties without mugwort powder, and grade B pork patties were higher than that of the grade I pork patties. The a value of grade I pork patties were higher than that of grade B pork patties, and changes during storage were no significant difference. The b value of grade B pork patties were higher than that of grade I pork patties. The pH of pork patties decreased during storage. The VBN, TBARS and total bacterial counts added significantly during storage, and the addition of mugwort powder were not affected during storage.

• Food Science of Animal Resources
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• v.23 no.2
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• pp.97-102
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• 2003

This study was carried out to investigate the effect of addition of mugwort powder and carcass grade on the quality characteristics of pork patty. Pork patties prepared from A patty(grade B pork patty), B patty(grade B pork patty containing mugwort powder), C patty(grade E pork patty) and D patty(grade E pork patty containing mugwort powder). The chemical composition, calorie, residual nitrite, surface color, textural properties, water holding capacity and sensory evaluation were evaluated. Moisture contents(%) were not different among patties, and crude fat(%) and calorie values of patties prepared from grade B pork meat were higher than those of patties prepared from grade E pork meat. Crude ash contents(%) were not different among patties, and residual nitrite contents(ppm) of patties containing mugwort powder were lower than those of patties without mugwort powder. Hunter L and b values of patties prepared from grade B pork meat were higher than those of patties prepared from grade E pork meat, and Hunters a values of patties prepared from grade E pork meat were higher than those of patties prepared from grade B pork meat. Hardness, cohesiveness and chewiness values of patties prepared from grade B pork meat were lower than those of patties prepared from grade E pork meat. Aroma, taste, texture, juiciness, color and palatability values were not different among patties.

• Journal of the Korean Society of Food Science and Nutrition
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• v.33 no.1
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• pp.201-206
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• 2004

This study was carried out to investigate the effect of addition mugwort podwer and carcass grade on the shelf life of pork ham. Pork ham was prepared by four type such as grade B pork ham ( $B_{o}$ ), grade B pork ham containing mugwort powder ( $B_{+}$), grade E pork ham ( $E_{o}$ ) and grade E pork ham containing mugwort powder ( $E_{+}$). The surface color, pH, residual nitrite, VBN (volatile basic nitrogen), TBARS (2-thiobarbituric acid reactive substances) and total bacterial counts of the samples were determined during storage for 8 weeks at 4$^{\circ}C$. The $L^{*}$ value of $B_{o}$ and $B_{+}$ ham showed higher at the latter period of 8 weeks, that of $E_{o}$ ham was the highest on at the storage of 2nd week and that of $E_{+}$ ham was not different during 8 weeks storage. The $L^{*}$ value of B grade ham was higher than that of E grade ham and the $a^{*}$ value of E grade ham was higher than that of B grade ham. The pH of all ham decreased during storage, but increased from 8 weeks. The residual nitrite of all ham highly decreased until storage for 2 weeks, the addition of mugwort powder was affected in the reduction of residual nitrite of pork ham. The VBN contents were 6.90∼7.90 mg% in the early period of storage, was 14.07∼14.83 mg% on the storage of 8th week. The TBARS of pork ham were increased gradually during storage and pork ham containing mugwort powder showed lower value than pork ham non added mugwort powder during 4th and 6th weeks storage. The total bacterial counts of pork ham were increased gradually during storage and the addition of mugwort powder was not effective.ive.ctive.ive.

• Journal of Life Science
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• v.12 no.6
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• pp.654-660
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• 2002

This study was carried out to investigate the effect of addition of perilla leaf(PL) powder and carcass grade on the surface color, residual nitrite and shelf-life of pork sausage. Pork sausage was prepared by four type such as grade B pork sausage(A sausage), grade B pork sausage containing perilla leaf(B sausage), grade I pork sausage(C sausage) and grade I pork sausage containing perilla leaf(D sausage) and the surface color, residual nitrite, pH, volatile basic nitrogen(VBN), thiobarbituric acid reactive substances(TBARS) and total bacterial counts of the samples were determined during storage at 4$^{\circ}C$. $L^*$ value of pork sausage showed the highest early stage of storage, pork sausage containing PL was lower than pork sausage without PL. The $a^*$ value of A sausage had the lowest on the storage of 8th week, B sausage had the highest on the storage of 4th week, and the $a^*$ value of C and D sausage were not significantly different during storage. The$a^*$ value of pork sausage containing PL was lower than pork sausage without PL, the $b^*$ value was higher than pork sausage without PL. The residual nitrite of pork sausage containing PL highly decreased until storage for 2 weeks, pork sausage without PL highly decreased until storage for 4 weeks, therefore addition of PL was affected in the reduction of residual nitrite of pork sausage. The pH of A and B sausage decreased until storage at 4 weeks, but increased from 6 weeks. The VBN contents were 6.7~8.4 mg% in the early stage of storage, was 16.1~19.5 mg% on the storage of 8th weeks. The TBARS of pork sausage were increased gradually during storage. Pork sausage containing PL showed lower value than pork sausage non added PL during storage. The total bacterial counts of pork sausage were increased gradually during storage, pork sausage containing PL was lower than that of free PL during storage.

• Food Science of Animal Resources
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• v.23 no.4
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• pp.292-298
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• 2003

This study was carried out to clarify the effect of addition of mugwort powder and carcass grade on the quality and palatability of pork sausage. Pork sausage was prepared by four type such as grade B pork sausage without mugwort(A), grade B pork sausage with mugwort(B), grade E pork sausage without mugwort(C) and grade E pork sausage with mugwort(D). The chemical composition, calorie, water holding capacity, pH, residual nitrite, surface color, textural properties, free amino acid and sensory characteristics were evaluated. Moisture and crude ash were not significantly different among sausage. Crude fat of grade B sausage was higher than that of grade E sausage, and crude protein of grade E sausage was higher than that of grade B sausage. The calorie, water holding capacity and pH were not significantly different among four types of sausage, and the residual nitrite of sausage with mugwort powder was significantly lower than that of sausage without mugwort powder. In case of Hunter's L$\^$*/ value, grade B sausage was higher than that of grade E sausage. In case of Hunter's a$\^$*/ value, grade E sausage was higher than that of grade B sausage, and Hunter's b$\^$*/ value was not significantly different among sausage types. Textural properties, hardness, cohesiveness and chewiness were not significantly different among sausage types, but springiness of grade B sausage was higher than that of grade E sausage. The gumminess of grade B sausage with mugwort powder was lowest among sausage types. Free amino acids of A, B, C and D sausage were 0.603, 0.515, 0.618 and 0.531％, respectively. Sensory color, juiciness and palatability were not significantly different among sausage types, but color, taste and texture of grade B sausage were superior to grade E sausage, and those of sausage without mugwort powder were superior to the sausage with mugwort powder.

• Journal of Life Science
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• v.13 no.6
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• pp.829-835
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• 2003

Addition effect of mugwort powder on storage stability of boiled carcass grade(B and E) during storage at $4\pm1^{\circ}C$for 8 weeks were investigated. The pH value and volatile basic nitrogen(VBN) content of boiled pork with mugwort powder were not significant difference(p>0.05) depending on the carcass grade as compared to boiled pork without mugwort powder. The thiobarbituric acid reactive substances(TBARS) values of boiled pork with mugwort powder were significantly lower than those of boiled pork without mugwort powder up to 8 weeks of the chilling process. The boiled pork with mugwort powder showed to have lower numbers of bacteria and residual nitrite than those without mugwort powder depending on the carcass grade.

• Journal of Animal Science and Technology
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• v.64 no.1
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• pp.135-142
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• 2022

It is impossible to know the amount of pork primal cut by pig carcass grade which is determined only by carcass weight and backfat thickness in the Korean Pig Carcass System. The aim of this study was to investigate the correlation between the pig carcass grade and the amount of pork primal cut estimated with AutoFom III. A total of 419,321 Landrace, Yorkshire, and Duroc (LYD) pigs were graded with the Korean Pig Carcass Grade System. Amounts of belly, neck, loin, tenderloin, spare ribs, shoulder, and ham were estimated with AutoFom III. Regression equations for seven primal cuts according to each grade were derived. There were significant differences among the three carcass grades due to heteroscedasticity variance (p < 0.0001). Three regression equations were derived from AutoFom III estimation of primal cuts according to carcass grades. The coefficient of determination of the regression equation was 0.941 for grade 1⁺, 0.982 for grade 1, and 0.993 for grade 2. Regression equations obtained from this study are suitable for AutoFom III software, a useful tool for the analysis of each pig carcass grade in the Korean Pig Carcass Grade System. The high reliability of predicting the amount of primal cut with AutoFom III is advantageous for the management of slaughterhouses to optimize their product sorting in Korea.

• Food Science of Animal Resources
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• v.24 no.1
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• pp.15-22
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• 2004

The effects of carcass grade and addition of mugwort powder on the quality of the boiled pork were investigated. Four kinds of boiled pork were denoted as B$\_$+/ or E$\_$+/ boiled porks which were made with 0.3% mugwort powder to carcass grade B or E, respectively, and B$\_$0/ or E$\_$0/ boiled porks which were made without mugwort powder. The effect of carcass grade and the added mugwort powder on the pH, volatile basic nitrogen(VBN), bacterial count, calorie, essential amino acids, free amino acids, unsaturated fatty acids, color difference and palatability of boiled porks were not significant. Water holding capacity(WHC), springiness and Hunter's L$\^$＊/ value of B$\_$0/ boiled pork were higher than those of E$\_$0/ boiled pork. Hunter's a$\^$＊/ value of B$\_$0/ boiled pork were lower than those of E$\_$0/ boiled pork. Sensory taste and tenderness value of B$\_$0/ boiled pork were higher than those of E$\_$0/ boiled pork(p>0.05). WHC, 2-thiobarbituric acid reactive substances(TBARS) value and residual nitrite of boiled pork with mugwort powder were lower than those of boiled pork without mugwort powder.

• Journal of Animal Science and Technology
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• v.65 no.2
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• pp.412-426
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• 2023

Currently, pigs breed in Korea are LYD (Landrace × Yorkshire × Duroc) crossbred pigs. Pigs used as fresh meat are gilts and barrows. However, the current supply of pork is not satisfying Korean consumers. In addition, the comparison of carcasses between gilts and barrows only studies carcass weight, backfat thickness, or meat quality, and there are very few studies comparing carcass characteristics. The purpose of this study was to compare characteristics of 7 primal cuts of gilts and barrows as measured by AutoFom III. A total of 350,179 pigs were used, including 176,461 gilts and 173,718 barrows. Characteristics of seven primal cuts were measured using AutoFom III. In the case of carcass weight, there was no significant difference in grade 1+. For all other survey items except for grade 2, gilts showed significantly (p < 0.05) higher values. For all grades except for pork belly, amounts of the remaining six primal cuts were higher in gilts (all p < 0.05,). In addition, the ratio of intermuscular fat in the pork belly of barrows showed a higher value than that in the pork belly of gilts (p < 0.05). The amount of pork belly, which is the most popular among consumers in Korea, not only produced more production than gilts in barrows, but also showed a higher value than gilts in barrows for the ratio of intermuscular fat affecting taste. In summary, gilts produced higher yields than barrows in all parts except pork belly. For the production of only pork belly, barrows showed higher production than gilts.

• Asian-Australasian Journal of Animal Sciences
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• v.32 no.9
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• pp.1448-1457
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• 2019

Objective: The present work aimed at evaluating the effects of carcass quality grade (QG) on the quality characteristics of pork meat according to Korean carcass QG system. Methods: Pork carcasses with varying in QG: 1+ (QG1+, n = 10), 1 (QG1, n = 10) and 2 (QG2, n = 10), were used to evaluate the relationship between carcass QG and meat quality. The meat quality traits, fatty acid profiles, flavor compounds and sensory qualities were measured on the longissimus dorsi muscle samples of these carcasses. Results: Pork meat of higher QG (QG1+) presented significantly higher fat content (5.43%), C18:2n-6 level (19.03%) and total unsaturated fatty acids content (62.72%). Also, the QG1+ meat was significantly higher in levels of classes of flavor compounds such as aldehydes, alcohols and hydrocarbons in comparison to those of the meat samples from the lower QG groups. The sensory evaluation results (flavor, juiciness, tenderness, and acceptability scores) of QG1+ meat was significantly higher than the QG1 and QG2 meats. The pork with lower QG (i.e., QG2) was found positively correlated to redness (r = 0.987), C18:1n-9 level (r = 1.000) but negatively correlated to the fat content (r = -0.949), and flavor (r = -0.870), juiciness (r = -0.861), tenderness (r = -0.862) and acceptability (r = -0.815) scores. Conclusion: The pork with higher QG had higher fat content, total unsaturated fatty acids and better eating quality, thus producing pork with higher QGs should be considered in order to satisfy the consumer's expectation.