다산 정약용의 북한강 하천 체계 인식 연구- 「汕水尋源記」을 중심으로 A -

임정연(Jeong yeon IM),김기혁(Ki hyuk KIM) 한국문화역사지리학회 2017 문화 역사 지리 Vol.29 No.3

This paper aimed to investigate the method which Jeong Yakyong adopted to systemize the channel of Bukhangang River channel in 「Sansusimwongi」(「汕水尋源記」)”. Beside this book, he wrote two another books, 「Cheonwoogihaeng」(「穿牛紀行」)” and 「Sanhaengilgi」(「汕行日記」)” which was travel records on the river. In 「Sansusimwongi」, he named the river from origin to the end point as ‘Sansu(汕水)’ and he listed the names of mainstream and tributaries of rivers systematically. The origin of river were expanded towards northside and meeting point with Namhangang River was extended to the south comparing with antecedent geography books such as 「Yeojigo」(「輿地考」). Names along the river was written in details. He provided a variety of information along the river with the number of places along the river for explaining the flow of the main stream. Those shows that the context of this book is reflected by his historical thoughts and experience of his travel and he wrote this book for a follow-up of his precedent book 『Daedongsugyeong』(『大東水經』, 1814) 본 연구는 정약용의 「산수심원기」에 수록된 북한강 유로의 체계를 파악하고, 「여지고」를 비롯한 이전의 지 리지와 어떠한 차이가 나는지를 확인하였다. 「천우기행」과 「산행일기」에 이어 저술된 이 책에서는 북한강에 대해 ‘汕水’라는 전칭을 사용하였다. 산수의 발원지는 금강산 말휘령으로 보아, 이전 지리지와 차이를 보이고 있다. 이 는 정약용이 북한강의 지리적인 범위를 북쪽으로 확대시켰음을 보여준다. 산수의 종점에 대해서도 대부분의 지 리지에 용진으로 기록된 것과는 다르게 남자주 남쪽으로 설명하였다. 이는 두 강의 모이는 곳에서 자주 발생하는 홍수를 관찰한 내용이 반영된 결과이다. 전체 유로를 기술하는데 이용된 지명들은 이전 지리지를 바탕으로 하였 으며, 내용이 상세할 뿐만 아니라 유역의 장소에 담긴 역사와 취락의 모습까지 담아내고 있다. 『대동수경』의 후속 편 저술을 염두에 두고 편찬한 이 책은 정약용의 지리적인 인식 뿐만 아니라 19세기 고지도와 지리지에서 하천 체 계의 내용이 보완되어 가는 과정을 잘 보여주고 있다.

콩의 종류 및 조리방법에 따른 단백질·아미노산 함량 변화

임정연,김상천,김세나,최용민,양미란,조인희,김행란,Im, Jeong Yeon,Kim, Sang-Cheon,Kim, Sena,Choi, Youngmin,Yang, Mi Ran,Cho, In Hee,Kim, Haeng Ran 한국식품조리과학회 2016 한국식품조리과학회지 Vol.32 No.5

Purpose: The objective of this study was to provide nutritional information (protein and amino-acid contents) of soybeans (Baktae, Seoritae, Huktae, and Seomoktae) with different cooking methods. Methods: Raw, boiled (in $100{\pm}15^{\circ}C$ of water for 4 hr), and fried (in a pan at $110{\pm}15^{\circ}C$ for $20{\pm}5min$) soybean samples were prepared. Contents of protein and amino acids were determined. Results: Protein content in raw Baktae, Seoritae, Huktae, and Seomoktae soybeans ranged from 361.0 to 386.8 mg/g. Protein contents differed according to cooking methods. They were higher in pan-fried beans (107.9-113.5%) than in raw or boiled soybeans (48.2-49.5%). A total of 18 amino acids were analyzed. Amino acid data sets were subjected to principle component analysis (PCA) to understand their differences according to soybean types and cooking methods. Bean samples could be distinguished better according to cooking method in comparison with bean types by principle component (PC1) and PC2. In particular, fried soybeans contained much higher levels of cystein. Other amino acids were the dominant in raw and boiled ones. On the other hand, the amounts of threonine, histidine, proline, arginine, tyrosine, lysine, tryptophan, and methionine were higher in raw bean samples than in cooked ones. Conclusion: The contents of amino-acids and proteins are more effected by different cooking methods in comparison with soybean types.

MPEG-A 멀티미디어 응용 포맷 기술 소개

임정연,김문철,Im, Jeong-Yeon,Kim, Mun-Cheol 대한전자공학회 2007 전자공학회지 Vol.34 No.8

의대생과 비의대생의 학업 스트레스와 영향요인에 관한 연구

성안나,허수연,윤정교,이지연,최민기,전종하,김재훈,박귀화,임정수,고광필,정재훈,최윤형,Seong, Anna,Heo, Suyeon,Yoon, Jeonggyo,Lee, Ji Yeon,Choi, Min Gi,Jeon, Jong ha,Kim, Jae Hoon,Park, Kwi Hwa,Im, Jeong-Soo,Ko, Kwang-Pil,Jung, Jaehun,Choi 연세대학교 의과대학 2021 의학교육논단 Vol.23 No.2

This study examined the relationships among personality traits, coping efficacy, and academic stress in medical and non-medical students in South Korea, and investigated the mediating effect of coping efficacy in the relationship between personality traits and academic stress. The study group comprised 210 medical students and 175 non-medical students. They were asked to rate their personality traits, coping efficacy, and academic stress. The data were analyzed using IBM SPSS ver. 26.0 (IBM Corp., Armonk, NY, USA) and AMOS ver. 26.0 (IBM Corp.). Medical students scored higher for examination stress and lower for extroversion than non-medical students. In both groups, extroversion and conscientiousness positively affected coping efficacy, while neuroticism influenced it negatively. Neuroticism directly influenced all types of academic stress in both groups, while extroversion and conscientiousness only had direct effects on examination stress among medical students. Coping efficacy mediated the associations between personality traits and academic stress, except for the relationship between neuroticism and grade stress among medical students. The study indicates that coping efficacy had a significant effect on relieving academic stress among students with higher scores for extroversion and conscientiousness. Efforts should be made to decrease neuroticism to lower academic stress, as the relationship between neuroticism and academic stress is not directly influenced by coping efficacy. The implications of these results are discussed regarding a consultation system for students, especially those in medical school.

생강(Zingiber officinale Roscoe) 뿌리, 줄기, 잎의 라디칼 소거 활성을 통한 산화스트레스 억제 효과

임푸름(Pu Reum Im),황혜정(Hye-Jeong Hwang),임정연(Jeong Yeon Im),황유진(Yu-Jin Hwang),남동건(Dong-Geon Nam),최정숙(Jeong-Sook Choe),황경아(Kyung-A Hwang) 한국식품영양과학회 2021 한국식품영양과학회지 Vol.50 No.2

본 연구에서는 신규 식품 원료로 등록된 생강 잎과 생강 줄기의 항산화 효과를 생강 뿌리와 비교 분석하였다. DPPH와 ABTS 라디칼 소거능에 의한 항산화력을 측정한 결과 모든 시료 추출물에서 농도 의존적으로 항산화력이 증가하는 경향이 나타났으며, 특히 100 μg/mL 농도에서 생강 뿌리(58%)와 생강 잎(35%)에서 우수한 항산화 효능을 확인하였다. NO 생성 억제 효과는 모든 시료에서 나타났으며, 특히 생강잎은 25~31%의 저해율을 보여 생강 뿌리(22~37%)와 유사하게 NO 생성 억제 효과가 나타나 우수한 효능을 확인하였다. 생강 줄기는 24~26%의 저해율을 보였으나 농도 의존성은 없었다. 세포 내 활성산소종 생성은 생강 뿌리(21~46%), 생강 잎(15~30%), 생강 줄기(2~11%) 순서로 억제 효과가 높게 나타났다. 항산화 기전을 확인하기 위해 항산화효소의 유전자 발현을 평가한 결과 생강 잎은 Cu/Zn-SOD와 Mn-SOD 유전자 발현을 높은 수준으로 증가시켰으며, GPx와 catalase는 생강 뿌리, 생강 잎, 생강 줄기 순서로 발현을 증가시키는 것으로 나타났다. 본 연구 결과를 통해 그동안 버려지던 생강 잎과 생강 줄기의 항산화 효과를 확인하였고 생강 잎에서 우수한 항산화 활성을 확인하여 향후 건강기능식품 소재로서 개발이 가능할 것으로 판단된다. 그러나 생강 잎에 관한 연구는 미비한 실정으로 향후 생강 잎추출물의 체내 생리활성 메커니즘 구명을 위한 동물실험 등의 추가적인 연구가 필요할 것으로 판단된다. In this study, the antioxidant effects of Zingiber officinale Roscoe leaves and stems which have been registered as new food ingredients were comparatively analyzed with Z. officinale Rosc. roots. The increase in antioxidant activity was concentration-dependent in all extracts, and excellent antioxidant activity was confirmed in the roots (58%) and leaves (35%) at 100 μg/mL. The inhibitory effect of nitric oxide production was found in all samples. In particular, the leaves showed an inhibitory rate of 25∼31%, an effect similar to that of the roots (22∼37%), confirming their excellent efficacy. The stems showed a 24∼26% inhibition rate, but the inhibition was not concentration- dependent. The inhibitory effect of the roots, stems and leaves of Z. officinale Rosc. on the reactive oxygen species production was highest in the roots (21∼46%), followed by leaves (15∼30%) and stems (2∼11%). Cu/Zn-superoxide dismutase (SOD) and Mn-SOD mRNA expressions were increased to high levels by the leaves. Glutathione peroxidase and catalase levels were in the increased in the roots, leaves, and stems, in that order. Through the results of this study, the antioxidant effects of Z. officinale Rosc. leaves and stems were confirmed, and excellent antioxidant activity was confirmed in the leaves. Z. officinale Rosc. leaves can therefore be considered for use as an antioxidant functional health food material in the future. However, since studies on the leaves are insufficient, additional studies in animals are needed to investigate the mechanism of the physiological activity of Z. officinale Rosc. leaves in the body.

가시오갈피의 GA₃처리에 따른 종자발아와 유묘생존

이성호(Lee Seong Ho),임정대(Im Jeong Dae),김명조(Kim Myeong Jo),유창연(Yu Chang Yeon) 한국약용작물학회 2003 한국약용작물학회지 Vol.11 No.3

This experiment was carried out to investigate the effects of GA₃ and cold stratification as presown treatments on seed germination, seedling emergence and final survival rate of Acanthopanax senticosus Maxim. Seeds collected 145 days after-ripening period followed by 10 days of cold stratification was effective in promoting germination. Dehisced seeds treated with 500 ppm of GA₃ for 3 days was also effective in promoting germination. However, seedling emergence rate remained low in both treatment. Seedling emergence rate was higher for seeds germinated in Heungnong-Bio and Klasman-Bio than in vermiculite, perlite, vermiculite-perlite mixture, or sand. After 40 days of cold stratification, seedling emergence was significantly higher in the 500 ppm GA₃ treatment than nontreatment for both dehisced and non-dehisced seeds. However, for dehisced seeds, GA₃ treatment before sowing resulted in decreased fmal seedling survival rate.

지역 농산물의 항산화 및 NO 생성 효과

김주희(Ju-Hui Kim),임정연(Jeong Yeon Im),최활(Hwal Choi),정운율(Un Yul Jeong),김지수(Ji Su Kim),정지은(Jieun Jung),최정숙(Jeong-Sook Choe),이성현(Sung Hyen Lee) 한국지역사회생활과학회 2022 한국지역사회생활과학회지 Vol.33 No.2

UPLC-DAD-QTOF/MS를 이용한 국내산 생강(Zingiber officinale Rosc.) 잎과 줄기의 추출 용매별 플라보노이드 성분 분석

남동건 ( Dong-geon Nam ),이수지 ( Suji Lee ),임정연 ( Jeong Yeon Im ),황경아 ( Kyung-a Hwang ),최정숙 ( Jeong-sook Choe ),임푸름 ( Pureum Im ) 한국식품조리과학회(구 한국조리과학회) 2021 한국식품조리과학회지 Vol.37 No.1

Purpose: To investigate the main phenolic compound in Korean ginger (Zingiber officinale Rosc.) leaves and stem by isolating the flavonoids content through solvent extraction using UPLC-DAD-QTOF/MS. Methods: The flavonol glycosides were extracted using ethanol and hot-water. Thirteen flavonol glycosides were identified by a comparison of the ultraviolet and mass spectra with data from a chemical library and published literature. Results: Among these, novel compounds quercetin and kaempferol glycosides [M+H]+: quercetin 3-O-robinobioside-7-O-rhamnoside [m/z 757.2189], quercetin 3-O-rutinoside-7-O-rhamnoside [m/z 757.2184], quercetin 3-O-galactoside-7-O-rhamnoside [m/z 611.1623], quercetin 3-O-glucoside-7-O-rhamnoside [m/z 611.1617], quercetin 3-O-robinobioside [m/z 611.1621], quercetin 3-O-rutinoside [m/z 611.1608], quercetin 3-O-glucoside [m/z 465.1039], kaempferol 3-O-robinobioside-7-O -rhamnoside [m/z 741.2239], kaempferol 3-O-rutinoside-7-O-rhamnoside [m/z 741.2242], kaempferol 3-O-galactoside-7-O-rhamnoside [m/z 595.1667], kaempferol 3-O-robinobioside [m/z 595.1663], kaempferol 3-O-rutinoside [m/z 595.1660], kaempferol 3-O-glucoside [m/z 449.1088] were newly confirmed from the ginger leaves and stem. In particular, quercetin 3-O-glucoside (isoquercitrin) and quercetin 3-O-rutinoside (rutin) were confirmed as the major compounds in flavonols. Ethanol extraction of the ginger leaves and stem (213.47±2.60 and 59.88±0.63 mg/100 g dry weight) showed a higher flavonoid content than hot-water extracts (27.48±0.19 and 7.13±0.04 mg/100 g dry weight). Conclusion: This study has shown that, the use of ethanol in the solvent extraction process can significantly increase the flavonoid content obtained from ginger leaves and stem. The flavonoids in Korean ginger could serve as a potential source of natural antioxidants for use in various industrial applications.

생애주기에 따른 갈색거저리의 식품성분 변화

이주혜,이지윤,황진봉,남진식,한혜경,김소민,임정연,최용민,김행란,김세나,Lee, Ju-Hye,Lee, Jiyoon,Whang, Jinbong,Nam, Jin-Sik,Han, Hye-Kyung,Kim, So-Min,Im, Jeong Yeon,Choi, Youngmin,Kim, Haeng Ran,Kim, Se-Na 한국식품조리과학회 2016 한국식품조리과학회지 Vol.32 No.5

Purpose: This study was aimed to compare the nutritional content of the life stages of Tenebrio molitor. Methods: Nutritional element analysis comprised 12 minerals, 18 amino acids, 4 vitamins, and 12 fatty acids in larval, pupal, and adult stages. Nutritional element content was expressed as a percentage of 100 g of sample and determined in raw and freeze-dried samples to assess the food value of the insect. Results: Moisture, crude protein, and crude fat contents in raw samples were 63.5%, 23.19%, and 3.96%, respectively. Moisture content was significantly higher in the adult stage than in larval and pupal stages, whereas crude fat and crude ash contents were lower. Mineral composition of the mealworm showed K, P, and Mg in decreasing order of content, with no differences among life stages. Total amino acid content increased from adult, pupal to larval stages, in order with each stage's growth, without difference in amino acid composition. Seventy-six to 78% of total fatty acid corresponded to unsaturated fatty acids, with oleic acid as the most abundant. In addition, fatty acid content was high in the adult stage, and clear differences were observed between life stages. Finally, vitamins B1 and B3 showed similar content between life stages, whereas vitamin B2 showed a higher content the adult than larval and pupal stages. A higher folate content was observed in pupal and adult stages than in the larval stage. Although freeze-dried samples showed a higher nutritional content than raw samples, both samples were similar in composition and content between life stages, suggesting the suitability of freeze-dried samples for use as food materials. Conclusion: These results may provide a basis for more diversified industrial applications of the Tenebrio molitor.

국토정보기반 방역의사결정 지원체계: 아프리카 돼지열병을 중심으로

변흠경(Heum-Gyeong Byuen),공기평(Gi-Pyeong Gong),류호승(Ho-Seung Lyu),임정연(Jeong-Yeon Im),박동훈(Dong-Hun Park) 대한지리학회 2019 대한지리학회 학술대회논문집 Vol.2019 No.11