{"title":"Study of Organizing a System for the Establishment of Tea-Aesthetics: Focusing on the 18th Century Tea Culture Space of the Joseon Dynasty","authors":"Yeon-Min Song","doi":"10.29225/jkts.2023.29.2.13","DOIUrl":"https://doi.org/10.29225/jkts.2023.29.2.13","url":null,"abstract":"An analysis system was established through perceptual characteristics in aesthetic experiences related to Korean tea culture around the 18th century when aesthetics were established as a study and tea-aesthetics were established as a detailed branch of Korean aesthetics. A literature review and case analysis of the tea culture space were conducted based on Gernot Böhme's ‘Atmosphere Aesthetics’. As a result of this study, an aesthetic proposition called the “space” of physical detection that combines the natural environment, external aesthetic elements, and perceptual characteristics of the aesthetic category was presented. Second is the “human” existential values that synthesize the aesthetic background of humanistic ideas, philosophical and aesthetic elements, and perceptual characteristics of aesthetic categories. Third is “vigor”, which is the utterance of intention that combines the aesthetic background of social culture, relational aesthetic elements, and perceptual characteristics of aesthetic categories. Through this analysis system of the tea-aesthetics, it is expected that tea-aesthetics can be established as a study for self-understanding and empathy education by freely interpreting the perceptual experiences of individual perceptual subjects.","PeriodicalId":213854,"journal":{"name":"The Korean Tea Society","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126829660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study on the Characteristics of Tea Moral Culture Appeared in Hanjae Yi Mok's Dabu","authors":"Hyo-Jeong Yi, Suk-Hwan Hong, P. Yi","doi":"10.29225/jkts.2023.29.2.1","DOIUrl":"https://doi.org/10.29225/jkts.2023.29.2.1","url":null,"abstract":"Dabu (Rhapsody to Tea) is a representative of Korea's oldest tea, written by Hanjae Yi Mok (1471-1498), and has been evaluated as the first and oldest existing tea ceremony scripture in the history of Korean tea culture. \u0000Dabu explains the moral process of tea culture and can be referred as ‘the theory of training in tea ceremony’ or ‘a guideline for moral culture in tea ceremony’. It is systematically presents the mechanism of cultivation of tea and the stages of cultivation. And also which explains the mystery of the tea ceremony that leads to ‘Osimjicha (tea of my mind)’. The medium of tea and the stage of cultivation processes are likened to the stage of mental cultivation, which can be said to be the attitude of a moral scholar who wants to reach peace with the people through the study of mind called ‘Sugi (self cultivating)’. The author Hanjae believes that the idea of ‘Dasimilyeo (tea and the mind are the same)’ is the theoretical foundation of cultivation that fosters the initiative of the mind, which can be a necessary philosophical and spiritual value in modern society.","PeriodicalId":213854,"journal":{"name":"The Korean Tea Society","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126347760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chang-Kyoung Sung, J. Hwang, Jong Cheol Kim, Jihun Shin, Gwang Hui Jeong, K. Cho, Yong-Hwi Son, Juwan Park, Seung-Ho Jeon, Mi Jin Kwon, D. Shim
{"title":"Changes in Matcha Quality and Growth Characteristics from Cultivation under Different Shading","authors":"Chang-Kyoung Sung, J. Hwang, Jong Cheol Kim, Jihun Shin, Gwang Hui Jeong, K. Cho, Yong-Hwi Son, Juwan Park, Seung-Ho Jeon, Mi Jin Kwon, D. Shim","doi":"10.29225/jkts.2023.29.2.52","DOIUrl":"https://doi.org/10.29225/jkts.2023.29.2.52","url":null,"abstract":"The term matcha means that tea leaves cultivated under shade are prepared by pulverizing the leaves with a grinding machine (such as a stone mill or a ball mill), turning the tea leaves into a fine powder. There is a great difference in quality depending on cultivation techniques such as the shading period and the type of shade. This study investigates the effect on growth and physiological changes of tea leaves for the production of high-quality green tea depending on the use of sequential double shading (SD-SD) and sequential single shading (S-SD). Leaf area, moisture content, photosynthetic capacity, and G-value increase based on the amount of shade in the following order: SD-SD > S-SD > no shade. Total phenolic compound and catechin content were highest in unshaded matcha. Antioxidant activity was highest in unshaded matcha, which also coincides with the highest phenolic compound content, such as catechins. Sugar content was highest from no shade, with leaves absorbing the most light energy, and the free amino acid content was highest under SD-SD. The results of taste analysis through an electronic tongue showed the highest sour taste and umami from S-SD, a salty taste from no shade, and sweet taste, bitter taste, astringent taste, and spicy taste from SD-SD. The overall physiological and growth status and beneficial ingredients showed that SD-SD increases the color of the tea leaves more than S-SD, and sequential double shading is effective in reducing stress on tea plants.","PeriodicalId":213854,"journal":{"name":"The Korean Tea Society","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132380729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yu-Jung Kim, Sin Won Kim, H. Lee, Kye-Han Lee, Jeong-Yong Cho, J. Moon
{"title":"Selection of Material with Excellent Antioxidant Activity from Plants of Warm Temperate Forests in Korea","authors":"Yu-Jung Kim, Sin Won Kim, H. Lee, Kye-Han Lee, Jeong-Yong Cho, J. Moon","doi":"10.29225/jkts.2023.29.2.63","DOIUrl":"https://doi.org/10.29225/jkts.2023.29.2.63","url":null,"abstract":"This study was performed to select an excellent antioxidant active material for 10 species of the family Fegaceae, a family of plants in warm temperate forests in Korea. The total phenolic and flavonoid contents, scavenging activities of DPPH, ABTS+ , and hydroxyl radicals, and reducing power of each hot water extract were examined. The Quercus acuta leaf (QA) extract (QAE) showed the highest activity in all tests. In addition, among the hot water, 30%, 50%, 70% EtOH, and EtOH QAE, the hot water extract was the most excellent in extraction yield, total phenolic content, and DPPH radical-scavenging activity. Furthermore, the inhibitory activity on lipid peroxidation using lard was evaluated with the different concentrations of the hot water extract of QA. The inhibition activity was highest at 0.5% addition. On the other hand, a pro-oxidant effect was observed at higher addition concentrations because of the high reducing capacity of QAE. QAE is considered a potent material exhibiting excellent antioxidant activity in a small amount.","PeriodicalId":213854,"journal":{"name":"The Korean Tea Society","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133819888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study on Waegwan-kiln in the Late Joseon Dynasty through Tsusima Souke Archives","authors":"Yonglan Cho","doi":"10.29225/jkts.2023.29.2.24","DOIUrl":"https://doi.org/10.29225/jkts.2023.29.2.24","url":null,"abstract":"<jats:p />","PeriodicalId":213854,"journal":{"name":"The Korean Tea Society","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130305120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Moon, Yun-Suk Kwon, So Jin Lee, Y. Kwon, Eun Yong Song, Byung-Hyuk Kim
{"title":"Comparison of Amino Acid and Catechins Contents of Tea Plants Germplasm with Yellow Leaves and Green Leaves at the First Harvest Time","authors":"D. Moon, Yun-Suk Kwon, So Jin Lee, Y. Kwon, Eun Yong Song, Byung-Hyuk Kim","doi":"10.29225/jkts.2023.29.2.72","DOIUrl":"https://doi.org/10.29225/jkts.2023.29.2.72","url":null,"abstract":"The tea plant leaves at the first harvest time have green, purple, yellow, and white colors. The tea plant with yellow tea leaves contained the albino tea germplasm at the Gurye-gun of Jeollanam-do in Korea. This study compared the chlorophyll, amino acid, and catechin contents at the first harvest time in tea plants with yellow leaf (YL) and green leaf (GL) by transplant and cultivation after cutting from the same site. The chlorophyll content of GL was 3.3 times higher than YL at the one bud two leaves of the first harvest time. The chroma of brightness (L), red (a), and yellow (b) were 1.4, 1.1, and 1.6 times higher in YL than in GL, respectively. On the other hand, the total amino acid was 41.0 ± 1.0 mg/g for YL and 16.0 ± 0.6 mg/g for GL, showing a 2.6 times higher amino acid content in YL than GL. The L-theanine content was also 3.0 times higher in the YL (25.8 ± 0.3 mg/g) than in the GL (8.7 ± 0.4 mg/g). The L-theanine content in the total amino acid was 62.9% for the YL and 54.4% for the GL. The other amino acid contents were 15.1 ± 0.7 mg/g for the YL and 7.3 ± 0.2 mg/g for the GL. The total catechin content was 8.96 ± 0.08 mg/g for the YL and 7.19 ± 1.22 mg/g for the GL. The (-)-epigallocatechin-3-gallate (EGCG) and (-)-epigallocatechin (ECG) contents were higher in the YL than in the GL. Nevertheless, the (-)-epigallocatechin (EGC) content of GL was 1.2 times higher than the YL. In conclusion, the YL is another cultivar compared to the GL because of its different leaf yellow color, high amino acid, and L-theanine contents than GL.","PeriodicalId":213854,"journal":{"name":"The Korean Tea Society","volume":"70 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120966286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of Trends and Development in Tea-related Humanities and Social Science Research","authors":"Y. Yoo","doi":"10.29225/jkts.2023.29.2.34","DOIUrl":"https://doi.org/10.29225/jkts.2023.29.2.34","url":null,"abstract":"This study examines tea-related humanities and social science research trends through analysis of studies published over the 28-year period from 1995 to 2022 in the Journal of the Korean Tea Society and the Journal of Tea Culture & Industry Studies. The number of tea-related humanities and social science studies published during that 28-year period was 757. This study categorizes them into 22 fields. The most active research fields are tea industry, tea type, and world tea culture, followed by tea spirit, tea ceremony, education, and marketing. Studies with practical impact showed a rapidly increasing trend. Research in the fields of tea living, healing effects, tea space, and tea events showed a rapidly increasing trend over a 10-year period starting in the mid-2000s. Publication of tea-related humanities and social science research showed an annual increase of 20% from 1995 to 2016, and then shifted to a decreasing trend, especially during the years of COVID 19. To expand the influence of tea research, this study proposes ways to strengthen industry-academia collaboration from a selection of tea research topics and the sharing of tea research results.","PeriodicalId":213854,"journal":{"name":"The Korean Tea Society","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132757392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kyungae Park, Suk-Hwan Hong, Sung-Chul Hong, P. Yi
{"title":"Exploratory Approach to Development of Tea Culture Education Curriculum on Metaverse: Focusing on Platform Zepeto","authors":"Kyungae Park, Suk-Hwan Hong, Sung-Chul Hong, P. Yi","doi":"10.29225/jkts.2023.29.1.23","DOIUrl":"https://doi.org/10.29225/jkts.2023.29.1.23","url":null,"abstract":"In this study, we applied an exploratory approach to develop a tea culture education curriculum on the Metaverse, which has been receiving considerable attention as a new educational platform beyond the existing online setting. Our findings provide a direction to the development of a creative education curriculum using Metaverse content that can conserve the traditional aspects of Korean tea culture, while creating new value and types of knowledge. By analyzing the traits of different Metaverse platforms, Zepeto was selected as it provides a number of maps that include Korean characteristics and culture, as well as three-dimensional characters and multiple languages; it also allows users to create their own maps. However, due to limitations on sharing content and objects, a map using only images was produced. Based on this, a tea culture education teaching-learning curriculum using the Metaverse was proposed. The significance of this study is that it suggests a new approach in the field of tea culture education that can be more fun and interesting for students. In addition, directions have been proposed for a new type of tea culture education and character education program in the form of etiquette education on the Metaverse beyond existing etiquette education.","PeriodicalId":213854,"journal":{"name":"The Korean Tea Society","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130789237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Infusion Characteristics of Major Components at Different Water Temperature and Time in Jeju Green Teas","authors":"E. Oh, H. Park, Young Min Oh, Kwan Jung Song","doi":"10.29225/jkts.2023.29.1.64","DOIUrl":"https://doi.org/10.29225/jkts.2023.29.1.64","url":null,"abstract":"The taste of green tea is determined by interaction of brewed components. The characteristics of components in infusion are related to components content of green teas and their infusion rate. This study aimed to evaluate the quality of green teas manufactured with different methods in Jeju and analyze the infusion property of major components related to water temperature and time. Green teas including fan-fired, roasted and steamed ones were evaluated to be high-qualified with 4.5-6.0% of amino acids and around 2.5%. As brewing water temperature (70℃, 80℃, 90℃ and 100℃) rose and brewing time (1 min, 2 min and 4 min) increased, the infusion levels of most components were high. There was no difference in infusion rate of caffeine, but distinct differences were observed in infusion rate of the other components by green tea manufacturing method. The results indicated that proper infusion conditions could be at 70-80℃ and for less than 2 min regardless of green tea manufacturing methods considering taste.","PeriodicalId":213854,"journal":{"name":"The Korean Tea Society","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128812659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}