• Journal of the Korean Home Economics Association
• /
• v.31 no.3
• /
• pp.187-197
• /
• 1993

The objectives of this study were to investigate university students' knowledge of traditional dishes and seasonal festive foods, and to estimate the level of consumption in Korea. The result of the study indicated that their level of knowledge of the seasonal festive foods was very low on as average. The reason was that, because each family prepared only one or two festive dishes on seasonal festival days, these students had few opportunity of being acquainted with other kinds of festive foods. In case of traditional foods university students ate some traditional foods. However, they age other kinds of traditional foods such as Jun-Gol and San-Juk less than once a month because of the difficulty in cooking these foods everyday. Finally, the students showed their intention to eat more traditional foods and festive foods if they can find these types of foods easily. The findings of this study suggested that, in order to increase the consumption of our traditional foods, it is necessary to encourage the establishment of many traditional food stores and to provide an easy access to these stores. Furthermore, every effort should be made to develop various kinds of food materials and easy recipes which can be used at home.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.24 no.4
• /
• pp.578-581
• /
• 1995

The seasonal variation of two flavonoid, quercitrin and afzelin, in the leaves of Cedrela sinensis A. Juss. from May until November was investigated by high performance liquid chromatography. Separation by reversed phase chromatography on ${\mu}-Bondapak\;C_{18}$ column was achieved by isocratic elution. The concentration of quercitrin was 5.81% (w/w) in May and high in July(8.89%, w/w), August(7.94%, w/w), and decreased from September to November. The content of another flavonoid, afzelin was 0.06% (w/w) in May and highest in June (0.12%, w/w), and was reduced from July.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.24 no.2
• /
• pp.268-273
• /
• 1995

To study the nutritional value of warty sea squirt, Styela clava, which is one kind of urochoda and it has been used as special seafood stuffs by Korean, the seasonal variations of nutrient was investigated. The moisture content was ranged from 83.6% to 86.8% in experimental period. Maximun glycogen content showed up in June (3.7g/100g sample). The protein(N$\times$6.25) and lipid content varied with glycogen whereas ash content was not changed remarkably, showing 2.8$\pm$0.3%. Predominant minerals in edible portion and integuments were sodium, potassium, calcium and magnesium in order. Predominant constitutiional amino acids were asparagine, glutamic acid, taurine, aspartic acid, lysine and glycine and amino acids occupied 50% of the total amino acid. Porportion of nonpolar lipid to total lipid increased from April to early June while polar lipid level decreased. The neutral lipid was composed of triglyceride(59.32%) and free sterol(23.52%), and followed by diglycerides, monoglycerides, esterified sterols and hydrocarbon, free fatty acid. The phospholipid was mainly composed with phosphatidyl choline(49.7%), and phosphatidyl ethanolamine(33.0%). The major fatty acids of the total lipid in warty sea squirt were C20 : 5(17%), C22 : 6(13.76%), C16 : o(13.91%) and C16 : 1(12.52%).

• Journal of the Korean Society of Food Culture
• /
• v.32 no.6
• /
• pp.498-512
• /
• 2017

The aim of this study was to introduce the foods recorded in "Bongjeopyoram", a cookbook, of which the date of production and author are unknown. This was described in an old document belonging to the Hansan Lee family clan from Chungcheongnam-do and revealed its content and significance in the food culture history of Korea to academia for the first time, A close examination of "Bongjeopyoram" showed that, as with other cookbooks from the Joseon Dynasty, it started with methods of making alcoholic beverages. This was followed by recipes for different types of food in the following order: rice cakes and confectioneries, jeol-sik (seasonal foods), daily meals, foods made for jesa (ancestral rites) or a feast, food for weddings, and food for sijeol-jesa (seasonal ancestral rites). The book contained a total of 18 types of alcoholic beverages, 11 types of rice cakes and confectioneries, 20 types of daily meals, 28 types of jeol-sik and food for sijeol-jesa, 12 types of food for jesa and feasts, and 37 types of food for weddings, for a total of 126 types of food and beverages. "Bongjeopyoram" was an ancient cookbook with detailed records on how to carry out jesa, which was an important event hosted by jonggas, or the head family of a family clan, and how to receive and serve guests in the Joseon period. This book is expected to play a valuable role as a guidance with significance as a cookbook of a jongga from the Joseon Dynasty, a time when bongjesajeopbingaek (hosting jesa for one's ancestors and serving one's guest) was considered important.

• Food Science and Preservation
• /
• v.23 no.4
• /
• pp.502-509
• /
• 2016

The seasonal appearance and the chemical composition characteristics of cladode of Opuntia humifusa were investigated in this study. The minor (horizontal) and major (vertical) axes, the width, and weight of O. humifusa cladode were compared for its appearance features. Moisture, crude protein, ash, fat, color, dietary fiber, mineral, and amino acids contents were measured for the comparison of their chemical composition characteristics. The cladode of O. humifusa harvested in summer showed higher values of minor and major axis, width, and weight than those harvested in winter. According to the results of Hunter color index, cladode of O. humifusa harvested in summer showed the highest lightness level (Hunter L value). In the meanwhile, cladode of O. humifusa harvested in spring showed the highest Hunter a (redness) and b (yellowness) values. Cladode of O. humifusa harvested in summer had the lowest crude protein and crude fat contents, while it showed the highest crude ash content. The total contents of moisture and dietary fiber were significantly greater than summer-harvested cladode of O. humifusa followed by spring- and winter-harvested cladode of O. humifusa. The major mineral content of all seasonal cladode of O. humifusa was $Ca^{2+}$. Glutamic acid and aspartic acid were the major amino acids in all seasonal samples. Contrary, the contents of total amino acids and free amino acids were the lowest in summer-harvested cladode of O. humifusa. Taken together, it was concluded that the appearance and chemical quality of cladode of O. humifusa was versatile depending on the harvesting season.

• Food Science of Animal Resources
• /
• v.39 no.2
• /
• pp.332-344
• /
• 2019

The objective of this study was to investigate slaughtering performance, carcass grade, and quantitative traits of cuts according to seasonal influence by each month in pigs slaughtered in livestock processing complex (LPC) slaughterhouse in Korea, 2017. A total of 267,990 LYD ($Landrace{\times}Yorkshire{\times}Duroc$) pig data were used in this study. Results of slaughter heads, sex distribution, carcass weight, backfat thickness, grading class, total weight, and fat and lean meat percentages of each cut predicted by AutoFom III were obtained each month. The number of slaughtered pigs was the highest in early and late fall but the lowest in midsummer. Only in midsummer that the number of females was higher than that of castrates. During 2017, carcass weight was the lowest in late summer. Backfat thickness was in the range of 21-22 mm. In mid and late spring, pigs showed high 1+ grade ratio (37.05% and 36.15%, respectively). For traits of 11 cuts predicted by AutoFom III, porkbelly showed lower total weight, lean weight, and fat weight in midsummer to early fall but higher lean meat percentage compared to other seasons. Weights of deboned neck, loin, and lean meat were the highest in midfall compared to other seasons (p<0.05). In conclusion, characteristics of slaughtering, grading, and economic traits of pigs seemed to be highly seasonal. They were influenced by seasons. Results of this study could be used as basic data to develop seasonal specified management ways to improve pork production.

• Proceedings of the KSCN Conference
• /
• 2005.04a
• /
• pp.105-106
• /
• 2005

• Proceedings of the KSCN Conference
• /
• 2000.11a
• /
• pp.78-78
• /
• 2000

• Proceedings of the KSCN Conference
• /
• 2001.05a
• /
• pp.459.1-459
• /
• 2001

• Korean Journal of Community Nutrition
• /
• v.13 no.5
• /
• pp.620-629
• /
• 2008

The purpose of this study was to assess dietary habits and seasonal variation and diversity of food intakes of elderly women living alone as compared to those of elderly women living with family in a rural area. Forty nine elderly women living alone and forty one elderly women living with family who reside in Goryeong-gun, Gyeongbuk, were interviewed using questionnaires in summer 2005, and their food intakes were assessed secondly in winter and thirdly in spring 2006. The average ages were 74.7 years for elderly living alone and 72.8 years for elderly living with family. Tooth status and bone fracture experience were similar between the groups. The prevalence of musculoskeletal disease was 61.2% and that of circulatory disease was 32.7% of the subjects. Average of total score of mental depression of the subjects was 5.94 out of 12 points, and it was not significantly different between the two groups. Skipping meals was more frequent and mealtime was more irregular in the elderly women living alone as compared with the elderly women living with family. Consumption of dietary supplements was also less in the elderly women living alone. Food intakes by the elderly women living alone tended to be lower than those by the elderly women living with family. Dietary diversity score was significantly lower with the elderly women living alone as compared with the elderly women living with family only in summer (p < 0.01). Percentages of the subjects who have taken meat group and vegetable group were significantly lower in the elderly living alone compared with the elderly living with family during summer. Therefore, it is necessary to develop food assistance or supporting program suited for the season within a community for elderly women living alone.