인천광역시 유통 한약재의 잔류농약 실태 조사 및 위해평가

강민정,권성희,김선회,염미숙,박병규,이희정,김지형,주광식,허명제,권문주,Min-jeong Kang,Sung-Hee Kwon,Sun-Hoi Kim,Mi-Sook Yeom,Byung-Kyu Park,Hee-jeong Lee,Ji-Hyeung Kim,Kwang-sig Joo,Myung-je Heo,Mun-ju Kwon 한국식품위생안전성학회 2024 한국식품위생안전성학회지 Vol.39 No.2

본 연구에서는 인천광역시에서 유통 중인 한약재의 안전성을 확인하기 위해 24품목의 50건을 대상으로 345종의 잔류농약을 분석하였다. 잔류농약은 미량으로도 인체의 건강에 해를 가할 수 있는 유해 물질로 주의가 필요하다. 기준 규격외 다양한 잔류농약 확인을 위해, QuEChERS법으로 전처리후 분석한 결과, 7품목 24건(48%)의 한약재에서 총 22종의 잔류농약이 검출되었으며, 농약이 검출된 한약재는 천궁, 택사, 당귀, 백지 순으로 많았다. 검출 농약 중 2건을 제외하고는 모두 기준이 설정되어 있지 않은 농약이었으나, 위해 평가 결과 안전한 수준으로 확인되었다. 또한, 동일 품목에서 다빈도로 검출되는 농약을 확인하여, 해당 품목의 지속적인 잔류농약 모니터링의 필요성을 시사하였으며, 대한약전의 전처리법에 따른 비교분석에서도 동일한 농약이 검출되어, QuEChERS법을 이용한 생약의 잔류농약 분석 가능성을 제시하였다. 결과적으로, 소비자 안전을 위해서 기준규격 잔류농약 항목 외에도, 생약에 대한 지속적인 잔류농약 모니터링과 신뢰성 높은 고효율 분석법 개발 연구가 계속 필요할 것이다. This study investigated the levels of 345 pesticide residues in 50 herbal medicines sold in Incheon metropolitan city to determine their safety. Pesticide residues are harmful substances that can cause serious health problems owing to their toxicity and carcinogenicity. The analysis of pesticide residues in the samples was conducted using the quick, easy, cheap, effective, rugged, and safe (QuEChERS) method, known for its high analysis efficiency, to analyze a wide range of pesticides for which no standards have been set. The analysis was cross-validated with the pretreatment method outlined in the Korea Pharmacopoeia. Among the 50 samples encompassing 24 different herbs, 22 pesticide residues were detected in 24 samples, covering 7 distinct herbs, resulting in a detection rate of 48%. It is noteworthy that, except for two cases, all detected pesticides were those for which no standards were set. However, after conducting a risk evaluation considering the daily dosage of herb, it was determined that the levels of pesticide residues were within safe limits. Pesticides with high frequency within the same category of herbs were detected, indicating the necessity for continuous monitoring and regulation. In addition, comparative analysis using the pretreatment method outlined in the Korean Pharmacopoeia, yielded similar results, suggesting the possibility of analyzing pesticide residues in herbs using the QuEChERS method. The study emphasizes the importance of continuous monitoring of pesticide residues in herbs and the development of high-efficiency reliability analysis methods should continue to ensure consumer safety.

《산학정의(算學正義)》 〈대연(大衍)〉에 나타난 대연구일술(大衍求一術)의 구조

강민정,Kang, Min-Jeong 한국수학사학회 2021 Journal for history of mathematics Vol.34 No.5

The simple simultaneous linear congruence equation solution in 《Sunzi Suanjing孫子算經》 has developed into a systematic general solution in 《Shuxue Jiuzhang數書九章》. The most important parts of it is the creation of the Dayan Qiuyishu大衍求一術. The reason why 《Sanhak Jeongeui算學正義》 deals with the Dayanshu大衍術 which has lost its practicality in the calculation of astronomical calendar, is that one of the best achievement of traditional mathematics cannot be omitted. It is written with an emphasis on the disclosure of the calculation principle. It shows that Nam Byeong-gil南秉吉 and Lee Sang-hyeok李尙爀 had a fairly structural understanding of the Dayan Qiuyishu.

《구장술해》를 통한 《구장산술》의 이해 -방전장(方田章) 전반부의 용어와 어구의 의미를 중심으로 개념의 발달 과정에 주의하여-

강민정,KANG, Min Jeong 한국수학사학회 2015 Journal for history of mathematics Vol.2 No.1

We discuss several issues relating to the meaning of the terms and phrases in the first half of Chapter One fang tian 方田章 of ${\ll}$Jiuzhang suanshu九章算術${\gg}$. I understood those issues more clearly in the course of the translation of ${\ll}$Kujang sulhae 九章術解${\gg}$. Those are '今有' in the beginning of each problem, '積' and '冪' in the method of square field 方田術, '齊' in the method of reduction to a common denominator 齊同術, '經' and '有分者通之重有分者同而通之' in the method of dividing fraction 經分術, '實如法而一' in the calculation using the rods, '兩邪' in the method of trapezium field with a perpendicular side 邪田術. We may find out the value of ${\ll}$Kujang sulhae 九章術解${\gg}$ through our discussion.

서울 일부 지역 노인의 체지방률, 허리둘레와 체질량지수에 의한 비만 분류 및 만성질환 유병율과의 연관성

강민정,박정영,김정연,이연주,도민희,이상선,Kang, Min Jeong,Park, Jung Young,Kim, Jung Yun,Lee, Yeon Joo,Do, Min Hee,Lee, Sang Sun 한국식품영양학회 2014 韓國食品營養學會誌 Vol.27 No.3

The purpose of this study was to compare the validity of obesity indices among the body mass index (BMI), waist circumference (WC), and body fat percentage (BF%), and to determine which is the most useful index to predict the risk of chronic diseases of elderly people. This study was conducted as a cross-sectional study at welfare centers in Seoul. The total number of subjects was 261 (68 men and 193 women) with age ${\geq}60$ years. The distribution of obesity using 3 obesity indices in the subjects with hypertension, diabetes, or arthritis was BF%>WC>BMI in elderly men and WC>BF%>BMI in elderly women. In elderly women, odds ratios (ORs) for hypertension in BMI and WC quartiles were significantly increased in quartile 2 and 3 (p<0.05). The ORs for hypertension, hyperlipidemia, and arthritis in BF% quartiles were significantly increased in quartile 3 and 4 (p<0.05). The BF% was sensitive obesity index for predicting the occurrence of chronic disease in men, and the WC was sensitive index in women. Our results suggested maintaining BMI less than $23.5kg/m^2$, WC less than 82 cm, and BF less than 35% in order to prevent chronic diseases in elderly women.

산대셈 개방법(開方法)에 대한 《산학정의》의 독자적 성취: 어림수[상(商)] 배열법 개선을 통한 증승개방법(增乘開方法)의 정련(精鍊)

강민정,Kang, Min Jeong 한국수학사학회 2018 Journal for history of mathematics Vol.31 No.6

The KaiFangFa開方法 of traditional mathematics was completed in ${\ll}$JiuZhang SuanShu九章算術${\gg}$ originally, and further organized in Song宋 $Yu{\acute{a}}n$元 dinasities. The former is the ShiSuoKaiFangFa釋鎖開方法 using the coefficients of the polynomial expansion, and the latter is the ZengChengKaiFangFa增乘開方法 obtaining the solution only by some mechanical numerical manipulations. ${\ll}$SanHak JeongEui算學正義${\gg}$ basically used the latter and improved the estimate-value array by referring to the written-calculation in ${\ll}$ShuLi JingYun數理精蘊${\gg}$. As a result, ZengChengKaiFangFa was more refined so that the KaiFangFa algorithm is more consistent.

친환경 세척제의 처리 방법을 달리하여 착즙한 당근 주스의 미생물 안전성 및 품질

임상욱(Sang-Wook Lim),최다정(Da-Jeong Choe),강민정(Min-Jung Kang),김종현(Jong-Hyun Kim),김묘정(Myo-Jeong Kim),김민주(Min-Ju Kim) 한국식품영양과학회 2017 한국식품영양과학회지 Vol.46 No.10

본 연구에서는 당근의 세척에 사용되는 친환경 세척제의 초기 미생물 제어 효과를 향상시키기 위해 탄산수소나트륨과 구연산의 단독 및 병합 처리 조건을 설정하였으며 저장 중 당근 주스의 미생물 수 및 품질 특성 변화를 분석하였다. 친환경 세척제의 단독 처리 방법으로는 0.5, 1, 2% 탄산나트륨수와 0.2, 0.5, 1% 구연산수를 적용하였고, 살균 효과를 비교하기 위해 무처리구, 수돗물 처리구, 50 ppm 차아염소산나트륨 처리구를 사용하였다. 당근의 세척을 위한 병합처리 방법으로는 단독 처리에서 우수한 살균 효과를 나타낸 1% 탄산수소나트륨수와 1% 구연산수를 이용하였고, 1% 탄산수소나트륨수 처리 후 1% 구연산수로 처리하는 단계적 병합 처리구가 가장 우수한 살균 효과를 나타내었다. 1% 탄산수소나트륨수와 1% 구연산수의 단계적 병합 처리구는 무처리구에 비해 일반 세균수 1.87 log CFU/mL, 대장균군 1.56 log CFU/mL를 감소시켰고, 50 ppm 차아염소산수에 비해서도 일반 세균수 1.07 log CFU/mL, 대장균군 0.22 log CFU/mL의 미생물 감균효과를 나타냈다. 1% 탄산수소나트륨수 처리 후 1% 구연산수의 단계적 병합 처리구를 4°C에서 7일 동안 저장한 결과 수돗물, 50 ppm 차아염소산수나 혼합 병합 처리구, 1% 구연산수 처리 후 1% 탄산수소나트륨 처리구에 비해 미생물 제어 효과가 확실하게 나타났지만, pH, 당도, 산도, 색도에는 유의적인 차이가 나타나지 않았다. 본 연구 결과 1% 탄산수소나트륨과 1% 구연산의 단계적 병합 처리는 당근 세척 시 초기 미생물 제어와 품질 유지에 있어 효과적인 살균처리 방법으로 비가열 당근 주스의 유통기간 동안 미생물 안전기준에 부합하며 주스의 품질을 유지할 수 있는 바람직한 세척방법으로 판단된다. The aim of this study was to evaluate the microbial inhibitory activity and physicochemical quality of fresh carrot juice prepared with different environmentally-friendly washing methods during low temperature storage. Individual and combined treatments with sodium bicarbonate (baking soda, NaHCO₃) and citric acid were applied to carrots for 10 min. Tap water and 50 ppm of sodium hypochlorite (NaOCl) were used as the control. Combined treatment of 1% NaHCO₃ and 1% citric acid significantly reduced total aerobic counts and coliforms. In addition, combined treatment of 1% NaHCO₃ and 1% citric acid inhibited microbial growth for 7 days at 4°C and 10°C in a shelf-life study. There were no significant differences among the sanitizers in terms of °Brix, acidity, pH, and color. Changes in physicochemical quality were not significantly different by sanitizer but were affected by storage temperature. These results indicate that washing with combined treatment of 1% NaHCO₃ and 1% citric acid is an effective method to inhibit the microbial population and maintain physicochemical quality. Therefore, combined treatment of 1% NaHCO₃ and 1% citric acid can be effectively used to sanitize and prepare carrot juice without affecting other properties.

소부혈(少府穴) 자침(刺鍼)이 Kainic Acid로 유도(誘導)된 간질(癎疾) 동물(動物)모델의 해마(海馬) 치상회(齒狀回)에 미치는 영향(影響)

김승태 ( Seung Tae Kim ),정주호 ( Joo Ho Chung ),정우병 ( Wu Byung Jeong ),김장현 ( Jang Hyun Kim ),강민정 ( Min Jung Kang ),홍미숙 ( Mee Sook Hong ),박해정 ( Hae Jeong Park ),김연정 ( Yeon Jung Kim ),박히준 ( Hi Joon Park ),이혜 대한경락경혈학회 2007 Korean Journal of Acupuncture Vol.24 No.4

Objectives: Epilepsy is one of the most common serious brain disorders that affect people of all ages, and it is characterized by recurrent unprovoked seizures. We examined whether acupuncture can reduce both the incidence of seizures and hippocampal cell death in dentate gyrus (DG) using a mouse model of kainic acid (KA)-induced epilepsy. Methods: ICR mice (20~25g) were given acupuncture once a day at acupoint HT8 (sobu) bilaterally during 2 days before KA injection. After an intracerebroventricular injection of 0.1μg of KA, acupuncture treatment was subsequently administered once more (total 3 times), and the degree of seizure was observed for 20 min. Three hours after injection, we confirmed the neural cell death using cresyl violet staining and silver impregnation staining, and determined the expressions of c-Fos and glutamate decarboxylase (GAD)-67 using immunohistochemistry techniques in the DG. Results: KA induced epileptic seizure, neural cell death, increased c-Fos expression and decreased GAD-67 expression in the DG. Acupuncture treatment at HT8 reduced the severity of the epileptic seizure and inhibited neural cell death from KA. In addition, acupuncture normalized the expressions of c-Fos and GAD-67 in the same areas. Conclusions: These results demonstrated that acupuncture treatment at HT8 may reduce the KA-induced epileptic seizure and neural cell death in the DG possibly by normalizing c-Fos expressions and the gamma-aminobutyric acid neurons.

K-POP 커버댄스 운동이 청소년 폭력 관련 심리 변인 및 혈중 호르몬 농도에 미치는 영향

서태범(Tae-Beom Seo),김영숙(Young-Sook Kim),김유미(Yu-mi Kim),강민정(Min-Jeong Kang),서경호(Kyeong-Ho Seo),박해찬(Hae-Chan Park) 한국생활환경학회 2015 한국생활환경학회지 Vol.22 No.5

The purpose of this study was to examine the effect of K-POP cover dance on violence related psychological factors, blood hormones, and neurotransmitters in adolescents. Participants in this study were 30 males and females taken blood sample and surveyed. All participants were performed K-POP cover dance (50~75%MHR, 80 min/day, 3days/week) during 8 weeks. School stress, assumed stress, interpersonal stress, ego stress were composed the stress factors. Body and verbal aggression, propriety, anger were composed aggression factors. School stress, assumed stress, interpersonal stress, ego stress were decreased significantly on K-POP cover dance. Also, body and verbal aggression, propriety, doubt, anger were decreased significantly on K-POP cover dance. Cortisol, melatonin, beta-endorphin, serotonin, dopamin were composed violence related blood factors. Cortisol were decreased significantly, but melatonin and dopamin were no significantly on K-POP cover dance. It is concluded that K-POP cover dance caused positive effects on violence and stress, stress related blood hormones.

초등 Upcycling 교육프로그램이 창의적 문제해결력에 미치는 영향 연구

강민정(Kang Min Jeong),이성희(Lee Sung Hee),이상원(Lee Sang Won) 학습자중심교과교육학회 2016 학습자중심교과교육연구 Vol.16 No.12

본 연구는 4R(Reduce, Reuse, Recycle, Upcycle)을 적용한 초등 Upcycling 교육프로그램을 개발하고, 5주 동안 프로그램에 참여한 3, 4, 5, 6학년 초등학생 565명을 대상으로 교육프로그램을 적용하여 창의적 문제해결력에 미치는 영향을 알아보고자 하였다. 프로그램은 Upcycling을 중심으로 하는 자원순환교육으로 STEAM 교육의 구성 요소 및 수업 설계 준거를 기반으로 삼아 교과 및 창체 수업시간에 진행할 수 있도록 설계하였다. 3,4,5학년 6차시, 6학년 10차시 총 28차시의 수업으로 주제는 ‘음식물쓰레기, 포장재, 종이, PET병’이고, 각 학년별로 참여한 학생들을 대상으로 사전·사후 검사결과를 통계 처리하여 분석하였다. 이에 대한 연구결과로 첫째, 초등 Upcycling교육프로그램은 학생들의 창의적 문제해결력 향상에 유의미한 효과가 있었다. 둘째, 창의적 문제해결력의 영역 중 자기 확신 및 독립성과 확산적 사고에 긍정적인 영향이 있었다. 가장 큰 변화는 수업시간에 갖게 된 호기심을 적극적인 질문을 통해 해결하게 되었다는 자신감의 향상이었다. 셋째, 비판적·논리적 사고와 동기적 요소도 사후 평균점수는 향상되었으나 유의미하지는 않았다. 그러나 친구들과 공유한 정보를 바탕으로 혼자서 결론을 이끌어낼 수 있게 되었다거나 어렵고 힘든 것도 쉽게 포기하지 않게 되었다는 자기 확신과 관련된 사고 및 동기적 요소가 크게 향상되어 프로그램이 장기화되었다면 유의미한 변화를 이끌어낼 수 있었을 것이다. 마지막으로 Upcycling 프로그램은 환경문제에 관심을 가질 수 있는 기회를 제공하였다. 본 연구의 결과, 초등 자원순환 교육프로그램에서 STEAM 교육방법을 적용하는 것은 의미가 있으며, 초등 자원순환 교육프로그램을 Upcycling을 중심으로 하였을때 학생들의 창의적 문제해결력을 기를 수 있음을 확인할 수 있었다. The study aims to develop Upcycling Education Program for elementary school children through application of 4R (Reduce, Reuse, Recycle, Upcycle) and apply the education program to 565 elementary school children so that effects on creative problem-solving ability can be explained. The program is upcycling-oriented resource circulation education and was designed to provide the curriculum and creative experience lessons based on components of STEAM education and standard for design of lessons. Statistics on pre-test results and post-test results on participants by grade were collected for the purpose of analyses. As a result of the study, the followings were found out. First, Elementary Upcycling Education Program had significant effects on improvement of creative problem-solving ability. Second, it had positive effects on self-belief, independence and divergent thinking within creative problem-solving domain. The greatest change was improved confidence in resolution through proactive questions in classes. Third, critical and logical thoughts and motivational factors were improved as well in terms of after-the-fact average point, but it was not significant. However, if a conclusion was personally drawn based on information shared by friends or if thoughts related to self-belief that something difficult was not easily given up and motivational factors were drastically improved to prolong the program, significant changes would have materialized. Lastly, the upcycling program provided an opportunity to develop interest in environmental problems. As a result of the study, it turned out to be meaningful to apply STEAM educational method to Elementary Resource Recycling Education Program, and students were able to develop creative problem-solving capability if an emphasis is placed on upcycling with regard to Elementary Resource Recycling Education Program.

자본시장을 통한 임팩트 투자 활성화에 관한 연구

강민정(Kang, Min Jeong),남유선(Nam, You Sun) 한국증권법학회 2014 증권법연구 Vol.15 No.1

사회적 벤처는 혁신형 사업모델을 구현하여 사회적 목적과 경제적 가치라는 혼합가치(Blended Values)를 추구하는 기업이다. 사회적 벤처의 혼합가치 추구에 공감하고 지원하는 투자형태를 ‘임팩트 투자’(Impact Investment)라고 한다. 광범한 민간투자를 통해 사회적 벤처의 자본조달이 가능하도록 하기 위하여 ‘사회적 증권거래소’ 등 투자 활동의 플랫폼이 갖춰져야 하며, 이를 위하여 금융전문 중간조직의 활성화와 투자자를 위한 세제 혜택 등이 마련되어야 한다. ‘사회적 증권거래소’는 임팩트 투자 생태계의 중요한 요소로서, KONEX의 제도와 법적 환경을 검토하여 국내 ‘사회적 증권거래소’ 설립의 가능성을 살펴보았다. This study examines how ‘Impact Investment’ has been developed from ‘Venture Philanthropy’ and ‘Philanthropic Investment’, which have supported social ventures by bringing management consulting capacity as well as financial investment. Elements of ecosystem of impact investment are elaborated. This study looks at how social ventures can be promoted through the perspective of Impact Investment; and elaborates policy tools which include creating a new capital market, ‘social stock exchange’ and broadening tax incentives for impact investors. Finance Intermediaries need to be established to support impact investment by bridging social ventures and impact investors, building evaluating tools for social impact which social ventures are creating, and providing information and transparency of social ventures for investments. The possibility of utilizing KONEX as social stock exchange’ has been examined; and there are quite a few positive elements that allow policy makers to look into more legal and policy elements of KONEX to promote impact investment in KONEX.