• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2002.11a
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• pp.126-126
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• 2002

• Journal of Biosystems Engineering
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• v.36 no.4
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• pp.252-256
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• 2011

Consumption of chicken feet has been increasing recently, thus it was necessary to produce good quality of bone less chicken feet. In the process of bone removal during chicken feet production, feeding, conveying, cutting and bone removing process takes about 90% of overall labor. Therefore, the development of a chicken feet-bone remover was necessary to reduce the cost of labor. There has been few research on the chicken feet bone removers so far in Korea as well as worldwide. So the main objective of this study was to develop a chicken feet-bone remover which is suitable for domestic circumstances. The average length of chicken feet was 113.3 mm with maximum and minimum lengths of 135.8 mm and 92.2 mm, and the average diameter of chicken leg was 12.5 mm, average width of the toe was 56.2 mm and the average weight of chicken feet was 26.4 g with maximum and minimum weight of 39.3 g and 16.9 g, respectively. Also, the average moisture content was 64.7% (w.b). The average cutting force of little toes was 15.6 N for the size ranges of less than 3.5 mm, 22.5 N, 3.5~6.0 mm and 30.3 N for larger than 6.0 mm in diameter, respectively.

• Korean Journal of Agricultural Science
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• v.10 no.2
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• pp.393-405
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• 1983

The demand for livestock and poultry products including beef, pork, chicken, egg and milk whose income elasticities are relatively higher than other staple foods, has been increased significantly during the past two decades in response to the remarkable increase in per capita GNP. This trend will be continued during the fifth and the sixth five year economic development plan period beginning with 1982. The annual GNP growth rate will be 7.5% on the average during the next 10 years. It is greatly needed to estimate the demand for beef, pork, chicken egg and milk and to study the feasibilities of domestic production of livestock products for the formulation of adequate policies in order to equate the consumption and the production during the 1980s. So this study reviewed the possible changes in the food consumption patterns during the 1980s, estimated the demand for beef, pork, chicken, egg and milk by using empirical demand functions and finally made suggestions for the formulation of long term price stabilization policies for each livestock, poultry and dairy products through the equilibrium of the quantity of demand for and supply of the products. There are many factors affecting the demand for meats, but this study considered own price, prices of supplements and substitutes and per capita income as the independent variables in the demand equations. It was found that it's own price and income were most significantly affecting factors among others and the degree of substitution effects were remarkably different among the products. According to the meat demand derived in this study, per capita consumption of beef, pork and chicken in the base year 1982 was 11.2kg for total meat, 2.5kg beef, 6.0kg pork and 2.5kg chicken, 106 pieces egg, 15.1kg milk respectively, while those in 1991 were 19.3kg for total meat, 4.8kg beef, 9.6kg pork, 4.9kg chicken, 133pieces egg and 44.1kg milk. It is also predicted through this study that, when the level of production costs be maintained, the domestic production of pork and chicken will meet the demand for them during the fifth and sixth five year economic plan period. However, there will be chronic shortage of beef supply during the coming years. The annual import requirement will be 30,000tons to 40,000tons during the period. In order to stabilize the domestic livestock and poultry and dairy products market, the government should introduce measures to curb the increase in beef consumption by encouraging the consumption of pork and chicken. For this, the livestock production policy measures should be concentrated on : 1) the improvement of infrastructures of beef production by introducing advanced feeding and management technology, subsidies for the establishment of facilities and price support programs for farmers : 2) the development of dairy beef : 3) the reinforcement of the forecast systems for pork and chicken production and consumption.

• Biomedical Science Letters
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• v.11 no.2
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• pp.121-128
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• 2005

A total of 30L monocytogenes strains from different sources including 13 strains isolated from the foreign imported meat were genotyped in order to establish their genetic relatedness and to compare them with the foreign isolates. PFGE analysis of genomic DNA showed the $11\~16$ fragments ranging in size from 38 to 504 kb. Eleven different PFGE types $(1\~11)$ were identified in the dendrogram at $75\%$ similarity, and the two major PFGE types, type 1 and 2, contained $94\%$ of domestic isolates (16/17). All isolates from domestic beef and pork carcass were grouped in each different type, however, isolates from chicken were clustered together with those from pork and beef. We also found all foreign strains were unrelated with each other, regardless of geographic criteria and that they could be differentiated from those from the domestic isolates by PFGE pattern. The PFGE pattern of one isolate from chicken wing, which the chicken meat was found to be imported from foreign country, was closely related to that of isolate from the Thailand.

• Korean Journal of Poultry Science
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• v.45 no.1
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• pp.41-51
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• 2018

Recently, the Korean government has been trying to conserve the genetic resources of native chicken. Although the production aspect is important, consumers should also value the native chicken in order for this market to grow. As certification systems are used to inform consumers about the value of a product, this study aims to investigate certification systems for chicken in France. Two regions were selected: Alsace and Bresse. We conducted a value-chain analysis of activities related to native chicken in each of these two regions, including hatching, breeding, slaughtering and processing, distributing, and marketing activities. We found that various certification systems were used not only to inform consumers about the value of the native chicken but also to protect biodiversity. Also, geographical indication, one kind of certification system, was utilized to establish higher quality based on the characteristics of each region. Implications pertinent to a domestic certification system for Korean native chickens were suggested.

• Food Science of Animal Resources
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• v.21 no.4
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• pp.337-343
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• 2001

Changes of Physicochemical compositions in domestic broiler chickens of different marketing standard range from 5ho (Korean traditional weight unite for chicken) to 16ho were assessed. The moisture contents of chicken breast were 74.00 ∼ 76.15% and there were no significant trend with weight difference. The chicken breasts of the light weight range(5ho∼8ho) contained high fat contents of 2.35∼2.78%. The chicken breasts of the heavy weight range(12ho∼16ho) contained low fat contents of 0.47 ∼0.66%. The chicken breasts of the heavy weight range had more protein contents than those of the light weight range. The chicken breast of the light weight range showed low Warner Braztler shear force (WBS) values when compared to those taken from chicken of the heavy weight range. However. there was no significant differences in water ho1ding capacity (WHC ) and cooking loss(p>0.05). In meat color the L* values (lightness) were 61.83∼71.33 and there were no significant differences for samples in different weight range except 5ho and 13ho. The b* valuers (yellowness) were 1.73 ∼6.79 and the values decreased with increasing chicken weight. In mineral composition. calcium and iron contents were decreased with increasing chicken weight. Phosphate, potassium and magnesium contents increased as weight ranges increased. The thigh meat separated from 11ho to 16ho had a similar tendency. In chemical composition(%). WBS, WBC. cooking loss, meat colors and mineral contents, compacted to breast in the same weight ranges. The results from this study would provide a basic information for establishment of marketing standard of chicken.

• New & Renewable Energy
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• v.19 no.4
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• pp.2-10
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• 2023

The current mandatory domestic biodiesel blending ratio is 3.5%, which is planned to be gradually increased to achieve carbon neutrality by 2050. The aim of this study was to improve domestic self-sufficiency in biodiesel raw oil by conducting a technical review on the possibility of utilizing waste oils, such as soup oil, chicken oil, and leather oil, as biodiesel feedstocks. These waste oils have an acid value that is too high to be converted directly into biodiesel. Therefore, a pretreatment to reduce the acid value is necessary. The neutralization process was examined as a potential technology for reducing the acid value. The oil recovery rate of the soup oil after neutralization was significantly low at 37.6 wt%. The oil recovery rates of leather oil and chicken oil were 66.49 wt% and 79.08 wt%, respectively. Based on biodiesel conversion experiment using waste oil with a reduced acid value, the conversions were analyzed as 89 wt%, 91.1 wt%, and 90.5 wt% for soup oil, leather oil, and chicken oil, respectively. Thus, it is technically possible to use soup oil, leather oil, and chicken oil as raw materials for producing biodiesel.

• Culinary science and hospitality research
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• v.9 no.3
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• pp.102-113
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• 2003

This study was conducted to investigate Korean soy sauces and Japanese soy sauces for their flavor and taste when they are used for Teriyaki sauce preparation. The results showed the followings; 1. The panelists liked more naturally brewed soy sauce (NBS) than mixed (NBS + acid-hydrolyzed) soy sauces, especially S company's NBS, 501S and Japanese K company's koikuchi NBS were preferred sauces. 2. The preference of Chicken Teriyaki preparation were also appeared to be the highest with S company's NBS, 501S and Japanese K company's koikuchi NBS. Both of them are naturally brewed soy sauces. 3. Chicken Teriyaki Sauce's preference were also high that made from the highly preferred soy sauces, therefore, it would be the better selection with the highly preferred soy sauces for the Chicken Teriyaki preparation. 4. There were no significant difference in preferences between imported NBS and domestic NBS, so it would be good to use Korean NBS for Chicken Teriyaki preparation.

• Korean Journal of Veterinary Research
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• v.12 no.2
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• pp.165-175
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• 1972

The frequency distribution and morphological characteristics of tissue mast cells in the various tissues of normal domestic animals (bovine, swine, dog and chicken) and systematically infected (Hog cholera, Canine distemper and Newcastle disease) animals were studied. The results were as follows: 1 In cattle, density of mast cells was higher in foetus (bovine) and young animals than in adults Differences in frequency distribution among individual animals were also observed. 2. In chicken, the highest number of mast cells was found in age group of 15 to 40 days, the moderate number in age group of one to 10 days, and the lowest number in age group of 40 days or older. 3. The morphologically, mast cells were usually round, ovoid, spindle, oval and irregular, and particularly in ovary of bovine, it was usually round and ovoid forms. 4. The largest numbers of mast cells were shown in ovary of bovine, intestine of swine and dog, and proventriculum of chicken. 5. In the systemic infections, the number of mart cells usually tends to increase.

• Korean Journal of Poultry Science
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• v.39 no.4
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• pp.269-271
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• 2012

The chicken has been growing in Korea for more than a thousand years according to the history book and commercially rising for broiler meat only since 1960's. As income increased mainly due to improved economy, it changes the habit of eating especially chicken meat. The structure changes into a coordinated production and marketing system which forced the prevailed small and independent producers to become a contract farmer under the vertically controlled practices. This coordinated structure began in 1970's and evolved continually to occupy around 90 percent of the market in 2010 with some ten (10) private brands being advertising. The industrial organizations have also conducted the generic promotion by a farmer's check-off program. Over the past 20 years, chicken import steadily increased to meet about 25 percent of the domestic market while the export showed negligible growth. As a whole, the structure change and international trade devoted to increased chicken consumption from 2 kg with the independent operation to 11 kg currently under the coordinated system and import. It is predicted that chicken consumption will grow in years to come and the import will also increase in addition to local productions, considering the free trade agreement that has already been in practice with EU and US to open the market eventually from all sources of supply worldwide.