한국산 구아바 잎 추출물을 첨가한 크래커의 항산화활성

허예진,심기현,최해연,김순임,Heo, Ye-Jin,Sim, Ki-Hyeon,Choi, Hae-Yeon,Kim, Sun-Im 한국식품조리과학회 2010 한국식품조리과학회지 Vol.30 No.2

The objectives of this study were to investigate the antioxidative activity of crackers made with a guava(Psidium guajava Linn.) leaf extract harvested in Korea. Guava leaf extraction using boiling water showed significantly higher antioxidative activities than extracting using 70% ethanol based on the higher total phenolic contents, FRAP, and ABTS assays(p<0.05). The crackers containing 1% guava leaf extract, and 0.075% BHT were stored at $63^{\circ}C$ for 7 days for the Schaal oven test, and the oxidative stability(AV, POV), antioxidative activity(DPPH, FRAP, ABTS assay), and sensory evaluation were compared. The crackers containing 1% guava leaf extract were found to have a higher oxidative stability than the control due to a lower acid value and peroxide value after 7 days of storage. The antioxidative activities of the crackers containing 1% guava leaf extract was the highest after 7 days as determined in the DPPH and ABTS assay, and was lower than crackers containing 0.075% BHT after 4 days as assessed by the FRAP assay. In the sensory evaluation, the crackers containing the 1% guava leaf extract had the highest scores in terms of taste, texture, and overall palatability than others at increasing storage time. As a result, the addition of 1% guava leaf extract harvested in Korea increased the antioxidative effect as well as the sensory acceptability of crackers.

시금치에서 살충제 Etoxazole과 Cartap hydrochloride의 잔류양상

허예진 ( Ye-jin Heo ),곽세연 ( Se-yeon Kwak ),이상협 ( Sang-hyeob Lee ),이동주 ( Dong-ju Lee ),최재원 ( Jae-won Choi ),오지은 ( Ji-eun Oh ),김장억 ( Jang-eok Kim ) 한국환경농학회 2021 한국환경농학회 학술대회집 Vol.2021 No.-

Pesticides help in increased yield of agricultural products by controlling pests, pathogens and weeds, but threaten food safety if used incorrectly. Therefore, it is necessary to establish the ‘safe use standards’ for pesticide application to allow pesticide residues be in safe limit. In this study, residual patterns of etoxazole and cartap hydrochloride were investigated in spinach. Etoxazole (10%, SC) and cartap hydrochloride (50%, SP) were diluted 4,000 and 1,000 times, respectively, and sprayed twice with 7 days interval at 21, 14, 10, 7, 3 and 0 days before harvest. Residual amounts of etoxazole and cartap hydrochloride were analyzed by LC-MS/MS. The recovery test was conducted at two levels (0.01 and 0.1 mg/kg), and the recovery rate was 80.8~112.4% with the standard deviation of ≤ 5.8. For cartap hydrochloride, the residual amounts of nereistoxin were analyzed and converted to calculate total residue. The residue of etoxazole decreased from 1.39 mg/kg to 0.01 mg/kg with the reduction rate 99.3% at 21 days after application. On the other hand, cartap hydrochloride (including converted residual amount of nereistoxin) showed 71.3% reduction from 1.72 mg/kg to 0.49 mg/kg. Etoxazole decreased faster than cartap hydrochloride because cartap hydrochloride is converted to nereistoxin prior to decreasing. As each of the pesticides behaves differently in different plant matrics, it is important to know the residue pattern separately to ensure safe application. Hence, the findings of this study will help to establish the safe use standards for field application as well as MRLs for spinach for these two pesticides.

발광소자용 비납계 페로브스카이트 나노결정

허예진 ( Ye Jin Heo ),조정호 ( Jeong Ho Cho ) 한국공업화학회 2019 공업화학전망 Vol.22 No.3

나노스케일 구조를 갖는 납 기반 할로겐화 페로브스카이트는 조절 가능한 방출 파장과 결함 내성(defect-tolerance)을 가지며, 높은 광 발광 양자 수율과 물질의 실온 합성 가능성으로 인해 최근 많은 관심을 받았다. 이러한 특성은 디스플레이에 적용되었을 때, 넒은 색 영역을 표현할 수 있다. 그러나 납의 독성이 페로브스카이트 디스플레이의 상용화를 방해한다. 따라서 최근에 비납계 할로겐화 페로브스카이트 나노결정에 대한 연구가 진행되었다. 본 글에서 우리는 비납계 페로브스카이트 나노결정의 설계 및 광 물리적 특성 및 발광 소자로의 응용에 대한 우리의 견해에 대하여 서술하며, 할로겐화 페로브스카이트 나노결정의 특징, 납을 대체할 수 있는 후보 원소에 대한 논의, 콜로이드성 비납계 페로브스카이트 나노결정을 합성하는 방법, 이들의 광학 특성을 제어하고 향상시키는 방법, 발광소자에서 비납계 페로브스카이트 나노결정을 사용한 최근의 연구 동향 및 이 분야에 대한 전망을 서술한다.

연구논문 : 한국산 구아바 잎 추출물을 첨가한 크래커의 항산화활성

허예진 ( Ye Jin Heo ),심기현 ( Ki Hyeon Sim ),최해연 ( Hae Yeon Choi ),김순임 ( Sun Im Kim ) 한국식품조리과학회(구.한국조리과학회) 2010 한국식품조리과학회지 Vol.26 No.2

미술치료사의 발달장애 아동 대상 집단치료 경험에 대한 현상학적 연구

허예진(Heo, Yae-Jin),문경아(Moon, Kyung-Ah) 한국예술심리치료학회 2019 예술심리치료연구 Vol.14 No.4

이 연구는 미술치료사들의 발달장애 아동 대상 집단치료 수행경험을 고찰하는데 목적이 있다. 이를 위하여 연구자는 7명의 미술치료사를 대상으로 그들의 발달장애 아동 대상 집단 치료 경험에 대한 심층면담을 진행한 뒤, Giorgi(2009)의 현상학적 연구 방법을 통하여 결 과를 도출하였다. 그 결과 ‘긍정적 요인’, ‘ 구조적 어려움’, ‘전문적 어려움’, ‘치료적 개입 요 인’, ‘어려움 개선 요인’, ‘치료사의 성장 경험’ 총 6가지의 구성요소와 15개의 하위 구성요소 가 도출되었다. 발달장애 아동 대상 집단치료 수행 과정에서 미술치료사들은 집단이 지닌 힘을 목격하였다. 아울러 발달장애 아동들로 구성된 집단미술치료 과정에서 발생하는 다양 한 어려움을 극복하기 위하여 지식 습득, 피어비전 등 개인적 노력과, 사회·제도적 지원 체 계의 중요성 또한 인식할 수 있었다. 이와 같이 발달장애 아동 대상 집단치료 수행 경험을 통하여 미술치료사들은 집단치료 중재 기술 향상과 발달장애에 대한 깊은 이해 및 잠재력 을 발견하는 등 보다 나은 치료사로 성장할 수 있었다. 이 연구는 미술치료사의 발달장애 아동 대상 집단치료 경험을 심층적으로 고찰했다는 것에 의의가 있으며, 향후 집단미술치료 현장에 대한 기초자료로 제공하고자 한다. This study aims to carefully examine the experiences of art therapists as noted in the group therapy of children with developmental disabilities. For this purpose, the researcher conducted in-depth interviews with seven art therapists about their experiences on the group therapy of children with developmental disabilities. After that each interview was analyzed using the phenomenological method of Amedeo Giorgi(2009). The results include 15 sub-categories and 6 components, which included: positive factor, structural difficulty, professional difficult, therapeutic intervention factor, factor for improving difficulty, and professional development. In this sense, the art therapist had witnessed the therapeutic power of group while performing group therapy on children with developmental disabilities and recognized that group therapy should be facilitative environment where clients can function entirely. Meanwhile, art therapists had experienced group dynamics, art intervention and structural difficulties due to children with developmental disabilities in groups in the process of group therapy. To overcome such difficulties, they had made various efforts and have grown professionally using these techniques. Finally, this study is meaningful in that it explored experiences of group therapy of children with developmental disabilities by art therapists in depth, and aims to provide this as fundamental data on the fields of group art therapy on children with developmental disabilities.

녹색채권과 에너지 분야 투자 연구: 프랑스 사례를 중심으로

허예진(Ye Jin Heo) 한국에너지기후변화학회 2020 한국에너지기후변화학회 학술대회 Vol.2020 No.11

자성 산화철 나노입자의 폴리스타이렌 미세플라스틱 흡작 특성 분석

이은희(Eun-Hee Lee),허예진(Yejin Heo),이승우(Seung-Woo Lee) 대한환경공학회 2022 대한환경공학회 학술발표논문집 Vol.2022 No.11

독일 사례로 보는 풍력 수용성 제고 방안

김기환(Kihwan Kim),허예진(Yejin Heo) 한국에너지기후변화학회 2021 한국에너지기후변화학회 학술대회 Vol.2021 No.5

노인의 삶의 만족도에 미치는 지역사회 물리적 환경 만족의 영향 : 주관적 이웃관계와 사회참여의 이중 매개효과를 중심으로

류동(Dong Liu),허예진(Yejin Heo) 한국노년학회 2022 한국노년학 Vol.42 No.1

본 연구는 노인의 지역사회 물리적 환경 만족이 삶의 만족도에 미치는 영향에 대해 분석하며 이 과정에서 주관적 이웃관계와사회참여의 이중 매개효과를 검증하는 것을 연구목적으로 하고 있다. 이를 위해 2019년 지역사회건강조사를 활용하여 전국 만 65세이상 74세 이하 노인(N=30,531)에 해당하는 자료를 추출하여 활용하였다. 분석 결과는 다음과 같다. 첫째, 지역사회 물리적 환경 만족은삶의 만족도에 정적인 영향을 미치는 것으로 확인되었다. 둘째, 지역사회 물리적 환경 만족이 삶의 만족에 미치는 영향에 있어서 주관적이웃관계와 사회참여는 각각 부분매개효과가 있는 것으로 확인되었다. 마지막으로 지역사회 물리적 환경 만족이 삶의 만족도에 미치는영향 관계에 있어서 주관적 이웃관계와 사회참여의 이중 매개효과는 통계적으로 유의미하게 나타났다. 즉 지역사회 물리적 환경에만족할수록 주관적 이웃관계가 개선되고 이를 통해 노인의 사회참여가 증가하여 삶의 만족도가 증가하게 되는 것으로 해석할 수 있다. 이와 같은 연구결과를 토대로 지역사회에서 이웃관계가 노인에게 미치는 영향에 대해 제고하며 이웃관계를 통해 사회참여를 이끌어내는것에 주목한다. 이를 통해 노년기에 새로운 역할을 통해 긍정적인 자아상을 확립하고 만족스러운 노년을 보내는데 논의하고 제언하였다. This study was conducted is to analyze the effect of satisfaction with community physical environment on life satisfaction among the elderly and to identify whether neighborhood relationships and social participation had double mediating effects. To this end, data about 30,531 people aged 65-74 from around the country was take from the results of a 2019 community health survey. The analysis results were as follows. First, satisfaction with community physical environment had a positive effect on life satisfaction. Second, subjective neighborhood relationships and social participation both had partial effects on the effect of satisfaction with community physical environment on life satisfaction. Third, the double mediating effects of subjective neighborhood relationships and social participation on the effect of satisfaction with community physical environment on life satisfaction were statistically significant. These results indicate that satisfaction with community physical environment improves subjective neighborhood relationships, which in turn increases their social participation, which in turn increases life satisfaction among the young elderly. These results indicate that efforts should be made up to improve the young elderly relationships in their neighborhoods to induce them to participate in social activities. These efforts can help the young elderly to establish a new role for themselves, improving their self-image, which would ultimately improve their satisfaction in old age.

GC-MS/MS를 이용한 축산물 시료 중 29종 농약의 다성분 분석법 개발

이상협 ( Sang-hyeob Lee ),곽세연 ( Se-yeon Kwak ),이동주 ( Dong-ju Lee ),허예진 ( Ye-jin Heo ),최재원 ( Jae-won Choi ),오지은 ( Ji-eun Oh ),김장억 ( Jang-eok Kim ) 한국환경농학회 2021 한국환경농학회 학술대회집 Vol.2021 No.-

The optimization and validation of multi-residue analysis for 29 pesticides in various meat matrices were evaluated. The developed method was validated in five meat matrices (pork belly, sirloin, chicken drumstick, lard, and beef tallow according to the CODEX guideline in terms of recovery, precision, calibration curve linearity, the limit of quantitation (LOQ) and matrix effect. In this study, meat samples were extracted using a QuEChERS extraction followed by optimization of sample clean-up. The clean-up method was then compared and optimized based on the d-SPE(PSA, C18, Z-SEP) and SPE cartridges(aminopropyl, C18, florisil). For the optimized analysis method, it is suitable to use the SPE cartridge as a clean-up method rather than d-SPE in order to improve the sensitivity of pesticides and reduce the matrix effect. In the clean-up method using the SPE cartridge, the use of the C18 SPE cartridge met most of the pesticide recovery criteria. The results of the optimized method showed that above 85% of pesticides gained the LOQs results of below 0.01 mg/kg, and over 90% of pesticides achieved good calibration curve linearity results (R2 > 0.99). As a result of the recovery test applied in an optimal method, more than 80% of the pesticides in the sample of pork belly, sirloin, and chicken drumstick satisfied recovery and precision criteria. In contrast, in lard and beef tallow, only 65% of pesticides met recovery and precision criteria. Therefore, it was confirmed that the recoveries measurement pesticide depends on the fat content of the samples. It can be seen that this fat content also affects a matrix effect. The average matrix effect was 16.6 ~ 30.7% in the samples of pork belly, sirloin, and chicken drumstick, while the average matrix effect was over 50% in the pork and beef fat sample. Although the matrix effect was different for each pesticide, most of the pesticides were affected by ion enhancement. In conclusion, it is judged that it will be possible to use it as a multi-residue analysis method for 29 pesticides on the meat sample.