Microplastics and nanoplastics (NMPs) are considered one of hazardous contaminants in marine ecosystems due to their toxic effects, such as reproduction disorder and oxidative stress, on marine organisms. Although water temperature is rising due to global climate change, little information on the toxicological interaction between NMPs and temperature is available. Therefore, in this study, we confirmed the toxicity of NMPs (polystyrene [PS] beads; 0.05- and 6-μm) on brackish water fleas (Diaphanosoma celebensis) depending on increased temperature (30°C and 35°C) at individual and molecular levels. In the chronic toxicity test, the group exposed to high temperatures showed an earlier first reproduction time compared to the normal temperatures group, but it was delayed by co-exposure to NMPs at 35°C. Notably, the total reproduction decreased significantly only after 0.05-μm PS beads exposure at 30°C. Interaction analysis showed that first reproduction time, modulation of the antioxidantrelated gene (GSTS1), heat shock gene (Hsp70), and ecdysteroid pathway-related genes (EcR_A, EcR_B, and CYP314A1) were closely related to temperature and PS beads size. These results indicate that microplastics have size-dependent toxicity, and their toxicity can be enhanced at high temperatures. In addition, higher temperatures and PS beads exposure may have negative effects on reproduction. This study suggests that various factors such as water temperature should be considered when evaluating the toxicity of microplastics in marine ecosystems, and provides an understanding of the complex toxic interaction between water temperature and microplastics for marine zooplankton.

This study summarizes the research methods, subjects, research processes, and achievements of major researchers by analyzing previous research results on Korean food history. The goal of the current study aimed to seek the methodology and direction of ‘food history research’. Literature data from 1945 to 2022 were examined. Results of excavation research on ancient food literature were divided into the following stages: the 1980s, when the foundation for ‘cataloging’ was laid, and the 2000s, when ‘digitization’ was achieved. Achievements of each period were collected, and the achievements and limitations were analyzed. Next, the research results were classified into ‘Food technology history’, ‘Recipe change history’, and ‘Food culture and dietary history’. We observed that around the 2000s, anthropology and folklore research perspectives were reflected, and the research on ‘history of diet’ reached a turning point. Our results indicate the possibility that food history can develop as a special historical area. This could be achieved by establishing an exchange system with other disciplines and creating a systematic curriculum.

This article defines the characteristics of Korean vegetarianism by tracing the changes in the core motives revealed in the historical development of the vegetarian movement that started in the West. We further explore and compare the limitations of the vegetarian movement conceived in the West with the essential values, ‘How can Korean vegetarian culture gain the upper hand?’. Our results indicate that the sequential changes of the motives inherent to the flow of the modern vegetarian movement were <religious-philosophy>, <political-society>, and <healthy-nutrition>. This settled the transition from ‘vegetarianism as an ideological form’ to ‘vegetarianism as a lifestyle’, making it a more becoming way of life. However, along with the spread of ‘vegetarian lifestyle as a form of life’, commercial vegetarianism, which overshadows the essential value of vegetarianism, continued to flourish due to the modern capitalist industrial system. To curb commercialization, the necessity arose to establish a new vegetarian diet with a propensity towards an ‘ecological-environmental point of view’. Thus, in order to establish the term and concept of a vegetarian diet for Korean vegetarian characteristics, we propose the formation of a vegetarian term and concept suitable for the Korean vegetarian culture.

The Chinese Sigyeong records the foods of the Primitive Pickling Period, pickling being a universal vegetable storage method, but does not indicate the origin of the pickled vegetables or the location of the source of transmission. Kimchi mainly used salt and sauce-based soaking materials at the beginning of the Fermented Pickling Period (beginning in the 1st to 3rd centuries A.D.), and it differed from the Chinese method, which used alcohol and vinegar. In the Umami-Flavored Pickling Period (beginning in the 14th and 15th centuries A.D.), jeotgal, fermented seafoods, were added, and pickles with a completely new identity were created, one different from any other pickles in the world. Lastly, entering the Complex Fermentation and Pickling Period (beginning in the 17th and 18th centuries), the technical process evolved using a separate special seasoning containing red pepper as the secondary immersion source after pickling in brine, the primary immersion source. As a result of this, kimchi was transformed into a food with a unique form and taste not found anywhere else. The unique characteristic of kimchi is that the composition of original materials, a combination of salted marine life and vegetable ingredients, is its core identity, and there is a methodological difference in that it is completed through a second process called saesaengchae (生菜)-chimchae (沈菜).

This research is the first known to introduce and analyze food-related content among the records left by George Clayton Foulk (1856-1893), a naval attaché dispatched as part of a U.S. delegation to Korea during the Joseon dynasty in the 19th century. Sketches and memos by Foulk provide important clues in understanding the food culture during the late Joseon dynasty. By analyzing the types of foods, table composition, and intervals between serving the nine rounds of food from the rural government office, which Foulk ate during his local trip, he was able to confirm that there was a starter (‘preliminary table’ or ‘hors d’oeuvre’) before the main table and that it was served before the main dish.

This study aims to establish a strategy for selling kimchi to satisfy the needs and wants of European consumers through survey, FGI, and IDI. All survey participants were Europeans and were selected on the basis of their kimchi awareness. For the quantitative survey, 246 participants 15 years or older were selected; for FGI, 33 participants aged between 20 and 49 were selected; and for IDI, eight chefs were selected. The survey included four steps of ‘Awareness-First try-Needs-Future consumption’. The participants got to know kimchi through the Internet; for example, by visiting Korea and Hallyu, and suggested positive comments, including ‘fancy’ and ‘exotic.’ While satisfaction with kimchi sharply decreased due to taste and appearance in the first try of kimchi, it is important to provide the best first-try experience. It also showed that important needs for kimchi are ‘hot sensation’ , ‘crunchiness’ and ‘presentation’. They gave a negative answer to combination with traditional cuisines of their own country, but provided positive comments for benchmarking the use of traditional pickled foods. This study suggests that it may be necessary to implement a two-track strategy by the traditional kimchi as a ‘strategic product’ and localized kimchi as a ‘key product’.

This paper provides a comprehensive description of previous studies of making and developing kimchi in terms of the origins of kimchi and the changes in the history of kimchi, along with newly discovered data, including the collection of works in Joseon Dynasty as well as old cookbooks discovered after the year 2000, and latest research in related disciplines, e.g., ancient history studies, archeology, and linguistics. Because new ruins and relics, such as the Liao-ho Civilization in the Northeast Asia continent, which was closely related to Dongyi tribes, have been discovered and studied, it is important to determine how to reflect the outcome of archeological studies on the origin of preserved vegetables. In addition, to describe the background and changes in the independent formation of making Korean kimchi chronologically, they were divided into the following: development from jjanji to singunji; formation of the basis for seokbakji dressed with fermented fish sauce; settlement of seokbakji culture for dressing seokbakji with fermented fish sauce and spices, including chili varieties when they were introduced; and establishment of the method for making whole cabbage kimchi, which is currently typical kimchi made by adding the seokbakji as the stuffing of the cabbage kimchi, to examine the time and specific details of the change.

This study aims to examine the contents of「Juchochimjeobang」, a cookbook about Jeotgal kimchi, and review its value in the history. This cookbook was published between about 1500s and early 1600s, and its book title is unknown because both the front and the back covers thereof are missing. However, the cookbook contains many wine and kimchi recipes, accounting for 66%, and「Juchochimjeobang」 was thus named after the recipes.「Juchochimjeobang」 has 126 recipes in 120 categories, and this study examines 20 kimchi recipes and 7 recipes for preserving vegetables.「Juchochimjeobang」 has a specific recipe for making Jahajeot and Baekajeot kimchi which are described in literature published between 1400s and 1500s. Although the recipes for making the aforementioned two types of Jeotgal kimchi are simple because jeotgal is just mixed with main materials, they are different from the recipe for Seokbakji described in Gyuhapchongseo, a cookbook written in the 19th-century Joseon Dynasty. Seokbakji described in Gyuhapchongseo is made by mixing spices of ginger, spring onion, chili powder with other materials. This implies changes of making Seokbakji over time. Moreover, 「Juchochimjeobang」is a very valuable historical cookbook because it has unique recipes, for example, adding sesame liquid, chinese pepper, willow and the like.

This study introduced 「Dongchundang Eumsikbeop」and examined its value as a reference. 「Dongchundang Eumsikbeop」is a recipe book from the Head House of Eunjin Song Clan. As the author is unknown, the book is named after where it was found.「Dongchundang Eumsikbeop」records the recipes for 32 total foods, including 12 types of fermented foods, eight types of liquor, and six types of side dishes, etc. In「Jusiksiui」, written by the same clan 100 years before, fermented foods account for 15% of its contents. On the other hand, this book assigns 34% of its space to fermented foods. It is assumed that the recipe book must have been compiled according to what households ate the most, as hostesses had to cook for their households due to financial difficulties at the time. In「Dongchundang Eumsikbeop」, baking soda and alum were used as leavening agents for confectionery while sugar-based caramelizing was used for making soy sources, implying that modern food techniques were already applied. In short, this book provides a glimpse into the wisdom of hostesses of the Head House who improved recipes to suit changing times while adhering to tradition.

This study compared recipes of Korean Traditional steamed dishes, Noodles, Rice cake & Confectionary in Choi’s Recipe (「Choi’s Eumsikbeop」) with those in other literatures written during the mid-Joseon Dynasty. Through this work, it aimed to explore the value of Choi’s Recipe (「Choi’s Eumsikbeop」) in the history of cooking and the meanings of its recipes. Choi’s Recipe (「Choi’s Eumsikbeop」) contains recipes for a total of 20 kinds of food. Specifically, there are seven kinds of Fermented dishes (kimchi (6), and salted fermented food (1)), four kinds of Steamed dishes, seven kinds of Confectionary and Sweet (rice cake (4), jeonggwa (1), and dang (2)), and two kinds of Noodles (dumpling (1), and noodle (1)). Among them, the steamed dishes revealed characteristics of 17th-century food as in other cooking books, and some of them utilized unique ingredients handed down only through head families. Moreover, some recipes showed different cooking methods using similar materials. This suggests the originality of the recipes in this cooking book.

This study explores the original text of a Korean recipe book written in the 17th century, which is hitherto unknown to food-related societies, and analyzes the characteristics of the recipes in this book. Choi’s recipes in Jasonbojoen (子孫寶傳) are significant, as it is a rare instance of a Korean cookbook written by a woman-few pre-17th century recipe books of this type are known to have survived. This study made some important discoveries after analyzing this book. First, by using pasqueflower and cockscomb, it was possible to identify the era-specific characteristics of kimchi recipes from the 1400s until after the 1700s. Second, this book has historical value, as it shows that the combination of kimchi with cockscomb and the recipe for stuffed eggplant kimchi made only with a small portion of garlic and salt have existed for longer than was previously believed. Third, this book can serve as a valuable database for studies on historical changes in Korean food recipes, as the recipes in this book besides those related to kimchi are representative of recipes in cookbooks before the 17th century. Additionally, it appears that some recipes in the book use very unique minor ingredients that cannot be found in other books.

The aim of this research was to analyze changes in a Roasted Beef recipe through Sulhamyukjuk. In order to conduct this study, we investigated ancient and modern culinary literature published until 1950. The main method of research in this study was content analysis. There were 15 pieces of ancient and modern culinary literature used. In addition, the roasted beef recipes totaled 78. Analysis of recipe data published over the last 300 years showed two different types of Roasted Beef recipes: 1) Roasted Skewered Beef and 2) General Roasted Beef. In the case of Roasted type, the method was divided into three steps: 1) Coating of flour porridge after marinade in the source, 2) Three dippings into cold water during Roasting, and 3) Roasting again with Seasoning.

The main purpose of this study was to perform a literature review regarding bibimnaengmyeon (cold buckwheat noodles mixed with sauce)-related recipes. To conduct this research, we analyzed recipe data published in Korea from the 1800's to the 1980's. The research was conducted by content analysis and literature review. The documents used in the research were 30 books (dictionaries and recipe books). A total of 37 bibimnaengmyeon-related recipes were identified. The results of the analysis of documented data published within the last 200 years showed two different types of main ingredients for bibimnaengmyeon-related recipes; noodles based on buckwheat flour, and noodles based on wheat flour. Additionally, the bibimnaengmyeon-related recipes were divided according to the sauce; 1) noodles mixed with red pepper sauce and 2) noodles mixed with soy sauce.

The mainly purpose of this research was to investigate tendency of changes regarding the recipe of Naengmyeon (Korean cold noodles) based on water. In order to conduct of this research, we analyze the recipe data published in Korea from 1800's to 1980's. A method of mainly study was conducted by content analysis and literature review. The documents of recipe used research were 42 literatures (euigwae, recipe book, magazines, and dictionaries). In addition, the recipes of Naengmyeon based on water were total method of 84. The results of an analysis of recipe data published in the last 200 years showed 3 different types of the recipe of Naengmyeon based on water; 1) Naengmyeon based on water of Kimchi juice type 2) Naengmyeon based on water of (meat) broth type 3) Naengmyeon based on water of mixed (Kimchi juice+broth) type.

본 논문은 적재설비의 바닥 구속조건에 따른 안전성을 평가하고자 한다. 평가를 위해서 국내에서 일반적으로 사용하고 있는 파렛트랙을 대상구조물로 선정하여 진동대 실험을 진행하였다. 진동대 실험을 위한 적재설비의 바닥 구속조건을 총 4가 지(1 bolt, 2 bolts, 4 bolts, Fixed)로 구분하여 진행하였다. 실험은 인공지진파를 증가시켜가며 진행하였고, 각 층별에서의 변위응답과 영구변형을 비교하였다. 이에 따른 실험 결과, 지진 강도에 따라 기둥 바닥의 구속조건을 달리 적용하는 것이 필요하다.

This paper intends to analyze the behavior characteristics of steel storage racks according to the constraints conditions by external loads such as seismic loads. In order to achieve these goals, the steel storage racks generally used in Korea were selected as target structures and shaking table tests were conducted. In order to confirm the behavior according to the constraints conditions, the foundation of the steel storage racks was constructed with three conditions (1 bolt, 4 bolts, fixed) and the experiment was carried out. As a result of the analysis of the data obtained through the experiment, it was confirmed that additional damper installation is needed rather than changing the condition of the bottom plate in order to secure the safety of the steel storage racks.