• Korean Journal of Human Ecology
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• v.7 no.1
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• pp.235-245
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• 1998

This survey was carried out to investigate the beverage consumption pattern. The Questionnaire, which consists of preference, quantity of daily consumption, selection, consumption of traditional beverages and so on, was distributed to elementary, middle and high school students and Home Economics teachers. Compared with teachers, students prefer soft drinks to coffee and tea. The factor considered as important appeared taste when they choose beverages. The reasons why they drink beverage were its being tasty and their heavy thirst. Among traditional beverages, sikhae was consumed most frequently at home. More than 50% of respondents answered that they had experiences of drinking whachae, soochungkwa, citron tea and ginger tea.

• Journal of the East Asian Society of Dietary Life
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• v.22 no.5
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• pp.567-575
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• 2012

This study was conducted to investigate the actual conditions of intake of Korean traditional beverages in 273 female university students in Seoul, Korea. The subjects of this study consisted of 128 food and nutrition majors and 145 non-majors. Questionnaires were administered to the subjects who had an average age of 20 years. Two-hundred and nineteen students (80.2%) lived with their parents. Regarding the type of beverages subjects often drink, coffee was the most preferred (51.3%) overall, and non-majors (4.1%) were shown to drink traditional beverages more often. Regarding preference for traditional beverages, most subjects (72.5%) responded that they liked their own traditional beverage. However, for frequency of intake of traditional beverages, 48.7% answered they do not drink any traditional beverages. The reasons why subjects like traditional beverages were taste (71.7%) and health (26.3%), and the type of traditional beverages they often drink were Yulmu tea (35.9%), Sik hae (30.8%), and Yuja tea (10.6%), in order. Regardless of major, ginseng tea, jujube tea, mulberry-leaf tea, Chinese matrimony vine tea, ssanghwa tea, ginger tea, and omija tea were found to be satisfactory traditional beverages. Therefore, due to the low intake frequency, preference, and satisfaction of traditional beverages, new traditional beverages that can meet the standards of female students should be immediately developed.

• Proceedings of the Korean Society of Toxicology Conference
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• 2003.10b
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• pp.94-94
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• 2003

Tea is the most popular beverage in the world, especially green tea (Camellia sinensis) is daily taken by Asian people including Japanese. In last two decades, a variety of biological effects of tea components such as antioxidative, antimutagenic, anticarcinogenic, antibacterial and radical scavenging activities on bacteria, cultured cells and mammals have been elucidated.(omitted)

• Journal of the Korean Society of Food Culture
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• v.6 no.1
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• pp.43-54
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• 1991

The types and processing characteristics of traditional non-alcoholic beverage and their historical backgrounds were surveyed through the old literatures published from the 8th century to 1940. A total of over 70 different names of beverages were found in the literature. They were classified into 10 groups according to their processing methods and quality characteristics; Sunda (green tea), Yusada (tea analog with/without green tea), Tang (boiled herb extract), Jang (lactic acid fermented rice beverage), Suksu (rice tea), Mium (cereal gruel), Misik (roasted cereal powder), Sikhe (sweet rice beverage saccharified with malt), Sujonggwa (ginger-fruit drink) and Hwachai (fruits drink). In the old literatures, there was non exist clear distinction between Jang, Tang, Chong and Tea. Lactic acid fermented rice beverage seemed to be a common drink in Silla and Koryo periods (AD. 600-1400), but disappeared afterwards and completely forgotten today. Other beverages are maintained until today with almost identical methods of preparation as described in the literatures written in the 18th century.

• Bulletin of Food Technology
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• v.23 no.2
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• pp.263-269
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• 2010

• Korean Journal of Food Science and Technology
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• v.40 no.5
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• pp.485-490
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• 2008

In this study, organic tea leaves were characterized with the aim of developing an organic beverage process. The green tea leaves grown using organic farming techniques were collected in Haenam, Korea. Catechins in green tea leaves were extracted by chloroform and ethyl acetate and these were then analyzed quantitatively and qualitatively by HPLC (high pressure liquid chromatography). The color and pH values of the green tea extracts were also measured. The catechin levels of April-harvested, May-harvested and June-harvested, semi-fermented leaves at 0.5% were 66.24, 29.19, 57.11, and 5.27 ${\mu}g/mL$, respectively. Among the detected catechins, the level of (-)-epigallocatechin gallate was the highest while that of (-)-epigallocatechin was not detected. The June-harvested leaves were selected as raw material for development of the green tea beverage, based on the levels of catechins, economic viability and yield of tea extract. As the level of extract increased, the levels of catechins of 0.1, 0.2, 0.5% also increased by 1.5, 11.78 and 41.01 times. From the results of the sensory evaluation of June-harvested leaf-extract, the sensory score of color was the highest in 0.1%, while the flavor and overall quality were the highest in 0.2%.

• Journal of the Korean Society of Food Science and Nutrition
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• v.23 no.5
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• pp.784-791
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• 1994

This study was to investigate the cadmium removal effect of Korean green tea, black tea and oolong tea beverage on Cd administered rat, tissues and their excretions. Male Sprague-Dawley rats weighing 143±3.2g were divided into control and experimental groups. The control group were fed standard diet without cadmium . The experimental groups, which were fed standard diet containing 40 ppm Cd, were divided into 4 subgroups again , which were the groups given distilled water (CD group), 5% black tea (BT group), oolong tea (OT group ) and green tea (GT group), respectively. Five days before to sacrifice the rats, all 4 cadmium fed groups were supplied 1 ml of water with 600ppm Cd and control group were fed 1 ml of distilled water without Cd under the same dietary condition. After that, their excretion were collected separately for 3 days. In rat liver and kidney, accmulation of cadmium in 4 Cd administered groups were more than in control group and that of GT group was significantly less than CD group. In bone , also, accumulation of cadmium in 4 Cd administered groups was more than in control group and that of GT, OT,BT groups were much less than that of CD group. GT group was excreted more Cd in urine than Cd group. In feces, 3 tea feeding groups (BT, OT, GT group) were excreted Cd 1.7, 2.1, 2.4 times more than that of the CD group, respectively. We conclude that cadmium accumulations of GT feeding group in rat's liver, kidney and bone were much less than CD group , and the absorption and retention rate of GT group was significantly lower than CD group.

• Journal of Nutrition and Health
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• v.33 no.5
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• pp.497-501
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• 2000

We investigated the effect of tea fungus/kombucha(TF) beverage on serum and liver lipid metabolism in growing male rats. The rats(Sprague-Dawley) were divided into five groups; control(TF free water), 20 or 40% TF groups(20 or 40% TF in water) and 20 or 40% TFS groups(20 or 40% TF autoclaved in water) according to the level of TF supplementation. The rats were fed ad libitum each of the experimental beverage for 7 weeks. The body weight gain of all the TF and TFS groups were similar to that of the control group. The total lipid and triglyceride concentrations of serum in the 40% TF group were increased more than those in the control group, but those in the 20% TF and 20% TFS groups were similar to that of the control group. The total cholesterol, HDL-cholesterol concentrations, HDL-cholesterol / total cholesterol ratio and atherogenic index of serum in all the TF and TFS groups were similar to those of the control group. The LDL-cholesterol concentration of serum was significantly lower in the 20% TF group than that in the control group. The LDL-cholesterol concentration of serum was significantly lower in the 20% TF group than that in the control group, but those of the 40% TF, 20% TFS and 40% TFS groups were similar to that of the control group. The liver weights of all the TF and TFS groups were heavier than that of the control group. The concentrations of hepatic triglyceride in the 20% TF and 20% TFS groups were significantly decreased, compared with that in the control group. The concentrations of hepatic total cholesterol in all the TF and TFS groups were significantly more decreased than that in the control group. These results indicated that the liver weights of tea fungus/kombucha beverage feeding rats were increased, also the serum triglyceride and total cholesterol concentrations of 40% TF feeding rats were increased. but the serum LDL-cholesterol, hepatic triglyceride and cholesterol levels of 20% TF feeding rats were decreased.

• Journal of the Korean Society of Food Science and Nutrition
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• v.23 no.3
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• pp.420-428
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• 1994

The purpose of this study was to determine relationship among the observed frequencies of 12 beverages selected by college men and women according to sex, age, race and academic classification and to estimate consumption of milk according to sex, age, race and academic classification. The instrument consisted of a check list and four questions. The sample of 282 subjects, 149 college men and 133 college women, was made by the accidental choice method. Observations occurred in the university center cafeteria at the dinner meal. The significant relationship s were sex and race in association with beverage selections by all subjects. The proportion of men in the distribution who selected regular , carbonated soft drinks and the proportion of white students who selected any of the carobnated soft drinks were the influencies. The result of the study indicated that carbonated soft drinks were the most preferred items followed by milk, water, iced tea, fruit juices, coffee, cocoa, and tea.

• Journal of the Korean Society of Food Culture
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• v.17 no.4
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• pp.399-410
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• 2002

This study was performed to investigate the perception and the preference of Korean traditional foods such as traditional holiday foods, rice cakes and beverages. The subjects were 598 elementary school students(male 310, female 288) in fifth or sixth grades. The most favorite traditional holiday food was rice cake soup(57.4%) and 92.4% of subjects wanted to keep the traditional holiday foods because of the traditional custom. The traditional beverages mainly drinking at home were sikhye(35.6%), misugalou(30.2%), green tea(18.5%), etc. Children's most favorite beverage was misugalou(90.5%) and they had no taste for ginseng tea(39.6%). Children did not know well about booggumi(64.1%), dootubdduk(63.3%), whajun(39.6%), etc. and liked gguldduk(94.2%) better than the others. They liked the rice cake because of its good taste(69.0%) and disliked it because of chocking(30.9%), not eating frequently(29.5%), hard and tough(18.2%), and so on. And they wanted to make the rice cake softer and sweeter like the cake and mostly ate it on the traditional holidays.