http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 심진하(Jin Ha Sim) (검색결과 5 건)
- 무료
- 기관 내 무료
- 유료
-
발효 다시마(Saccharina japonica) 분말, 미역귀 후코이단 분말 및 이들 혼합분말의 수분 흡습 특성
이창헌 ( Changheon Lee ),심진하 ( Jin Ha Sim ),김진현 ( Jin Hyeon Kim ),유대웅 ( Daeung Yu ) 한국수산과학회(구 한국수산학회) 2021 한국수산과학회지 Vol.54 No.1
The goal of this study was to investigate moisture sorption characteristics of Lactobacillus brevis-fermented sea tan gle Saccharina japonica, Mekabu fucoidan, and these mixture powders. Moisture sorption isotherms of powders were determined at 37°C using the static gravimetric technique in a water activity (a<sub>w</sub>) range of 0.11-0.93. Equilibrium moisture content (X<sub>eq</sub>) values of the fermented sea tangle powder were almost 3 times when a<sub>w</sub><0.7 and increased upto almost 4 times when a<sub>w</sub><0.9 higher than mekabu fucoidan powder. In these reason, to improve strong hygro scopic nature of the fermented sea tangle powder, fermented sea tangle and mekabu fucoidan powders were dissolved as ratios of 7:3, 5:5, and 3:7 (w/w) in a distilled water and then freeze dried. X<sub>eq</sub> values of mixture powders were around average value of sum of both powders at all a<sub>w</sub> ranges. All moisture sorption isotherms of powders exhibited typical J-shaped type III. X<sub>eq</sub> of mixture powders increased with increasing a<sub>w</sub> and decreased as increasing propor tion of mekabu fucoidan powder. The Peleg model was found to accurately describe moisture sorption isotherms of powders. The results can be used to understand hygroscopic nature of powders, improve shelf life, and retain quality across postharvest processing.
-
반응표면분석법을 활용한 다시마 김치 유래 유산균의 신바이오틱스 최적화
이창헌(Changheon Lee),심진하(Jin Ha Sim),김진현(Jin Hyeon Kim),송예준(Ye-Jun Song),손은익(Eun-Ik Son),김영목(Young-Mog Kim),유대웅(Daeung Yu) 한국식품영양과학회 2021 한국식품영양과학회지 Vol.50 No.12
Encapsulation 기술은 식품, 화장품 및 제약 등 산업계 전반에서 광범위하게 활용되는 기술로 식품 산업에서도 소재화 등에 널리 활용되고 있다. 본 연구에서는 이러한 encapsulation 기술 및 RSM을 활용하여 대체 피복물질인 프리바이오틱스(INL) 적용에 따른 다시마 김치 유래 Lactobacillus plantarum D-12의 신바이오틱스 최적화를 하고자 하였다. 분무건조 입구 온도의 증가에 따른 유산균 생존율 감소를 확인할 수 있었으며, 제조 수율에서의 피복물질 농도 증가는 일정 농도 초과 시 점도 상승으로 인해 수율의 감소를 야기하였다. 신바이오틱스 제조 조건 최적화에 있어서 최적 프리바이오틱스 농도(x₁)는 32%(w/v), 입구 온도(x₂)는 80℃로 예측되었으며, 이는 예측 최적값 적용에 따른 실측값과 큰 차이가 없었다. 구조분석 결과, 분무건조 적용 시 신바이오틱스 분말 입자가 더 균일하고 encapsulation이 더 규칙적으로 치밀하게 형성되어 분무건조를 적용하는 게 더 적합하다. 본 연구 결과는 INL을 활용한 Lactobacillus plantarum D-12의 신바이오틱스 최적화를 통하여 기존 피복물질 대체 제로 프리바이오틱스의 가능성을 확인하여 프로바이오틱스 산업에 크게 기여할 것으로 사료된다. The purpose of this study was the optimization of the synbiotics of Lactobacillus plantarum D-12 isolated and identified from kelp kimchi with inulin, which is widely used as a prebiotic, using encapsulation technology and response surface methodology (RSM). Inulin concentration [x₁, (w/v)], inlet temperature [x₂, ℃], synbiotics yield (Y₁), and survival rate of L. plantarum D-12 (Y₂) were designated as independent and dependent variables for the optimization of the synbiotics of L. plantarum D-12 using RSM. Y₁ was increased by increasing x₁ and x₂, whereas it decreased at x₁ over 30% due to adhesion loss in the spray dryer vessel due to the increasing stickiness of the synbiotic solution. Y₂ was decreased by increasing x₁ and x₂. Based on the ANOVA result, response models for Y₁ and Y₂ obtained from RSM were suitably fitted to a quadratic model. The predicted optimum x₁ and x₂ were 32% and 80℃. Based on the predicted optimum x values (x₁, x₂), the predicted Y values were 71.70% and 97.43% for Y₁ and Y₂ and the measured Y values were 75.35±0.58% and 98.12±0.46% for Y₁ and Y₂, respectively. The results of this study are expected to contribute to the probiotic industry by confirming the potential of prebiotics as a replacement for existing coating materials through the synbiotic optimization of L. plantarum D-12 with inulin.
-
LC-MS/MS를 이용한 벌꿀 중 잔류동물용의약품 분석법 개발
이혜수 ( Hyesu Lee ),심진하 ( Jin Ha Sim ),김지영 ( Ji Young Kim ),신동우 ( Dong-woo Shin ),김현경 ( Hyun-kyung Kim ) 한국환경농학회 2023 한국환경농학회 학술대회집 Vol.2023 No.0
The Positive List System (PLS) will be implemented for veterinary drug residues in food from 2024, therefore this study focused on the establishment of more sensitive analytical method for veterinary drug residues in honey, propolis, and royal jelly. For analysis, 8 veterinary drugs frequently used in honey, such as antibiotics and anthelmintics, were selected. The target analytes were extracted from honey, propolis, and royal jelly samples by using 80% acetonitrile, and then purified with C<sub>18</sub> and acetonitrile saturated with n-hexane. The LC-MS/MS analysis was performed on a reverse-phase C<sub>18</sub> column (2.1 × 150 mm, 3.5 μm) with gradient elution using 0.1% formic acid in water and 0.1% formic acid in acetonitrile as mobile phases. Method validation was proceeded for honey, propolis, and royal jelly at three concentrations, 1×LOQ, 2×LOQ and 10×LOQ (limit of quantification) or 0.5×MRL, 1×MRL and 2×MRL. The coefficient of linearity presents good linearity at matrix-matched calibration curves (R<sup>2</sup>>0.99). At all concentrations, the recoveries were ranged from 70.9% to 118.9% and the coefficient of variability (CV) were lower than 10%. These results met the CODEX guideline (CAC/GL 71-2009) requirements to analyze veterinary drug residues in food products.
-
최준영 ( Jun Young Choi ),하성용 ( Sungyong Ha ),김수연 ( Sooyeon Kim ),이민화 ( Minhwa Lee ),이영수 ( Youngsu Lee ),심진하 ( Jin Ha Sim ),김지영 ( Ji Young Kim ),신동우 ( Dong-woo Shin ),김현경 ( Hyun-kyung Kim ),엄소영 ( So-youn 한국환경농학회 2023 한국환경농학회 학술대회집 Vol.2023 No.0
Methimazole(1-methyl-2mercaptoimidazole), an antithyroid medicine is widely used to treat hyperthyroidism by inhibiting the production of thyroid hormone. It has been also approved for the same purpose for cats in Korea, but there is information that is also used for livestock. Therefore, it is necessary to develop reliable and sensitive methimazole detection methods for food safety assessment. In this study, we developed Liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to quantify methimazole in various samples (beef, pork, chicken, egg and milk). The samples were extracted usi cartridge 500 mg. Through the CODEX guidelines (CAC/GL 71-2009), the developed method was validated to be able to detect and quantify methimazole with excellent linearity, precision, and accuracy. The limit of detection (LOD) and limit of quantification (LOQ) were 0.004 mg/kg and 0.01 mg/kg, respectively. R-square value (coefficient of determination with calibration range) of the linear standard calibration curves was higher than 0.99. The recovery rates were ranged from 70% to 112%, with the coefficient of variability (CV) of less than 10%. This method can be used for the food safety assessment and monitoring for the imported and domestic livestock samples.
-
ScienceON
KISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
