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Evaluation on the Quality of Fresh, Conventionally Heated and Ohmically Heated Mulberry Fruit Juice
양지원,한대석,이창호,박성진,김영언,Yang, Ji-Won,Han, Dae-Seok,Lee, Chang-Ho,Park, Sung-Jin,Kim, Young-Eon The East Asian Society of Dietary Life 2014 동아시아식생활학회지 Vol.24 No.1
The aim of this study was to establish the superiority of ohmic heating over conventional heating for the sterilization of mulberry juice. Heat treatment of fresh juice significantly reduced the concentration of soluble solids, lowered the pH, and lowered the reducing sugar content (p<0.01). Color measurements showed decreases in the L and a values and increases in the b, H and C values after heat treatment, although the total color differences were smaller after ohmic heating than after conventional heating of fresh juice. The antioxidant capacities, such as reducing power, FRAP, and DPPH, decreased in the order of fresh juice, ohmically heated juice and conventionally heated juice. Furthermore, the anthocyanin, flovonoid, and total antioxidant capacities of the juices significantly decreased in the same order. Sensory evaluations showed no difference between fresh and ohmically heated mulberry fruit juice excluding off-flavor, whereas conventionally heated juice received significantly lower evaluations. The microbial counts were zero in the juice after either heat treatment. Thus, ohmic heat treatment can be effectively used to sterilize fresh mulberry juice to obtain good shelf life with minimal physicochemical, color, antioxidant and sensory deterioration.
누에(Bombyx mori) 번데기 및 한약재의 In Vitro 에스트로젠 활성
양지원,최은미,권무길,구성자,Yang Ji-Won,Choi Eun-Mi,Kwon Mu-Gil,Koo Sung-Ja 동아시아식생활학회 2005 동아시아식생활학회지 Vol.15 No.3
In this study we report on the estrogen activity of silkworm pupa and herb extracts in vitro. The estrogenic activity of these resources was investigated by competition binding assays with estrogen receptor $\alpha(ER{\alpha})\;or\;ER{\beta}$, and viability of MCF-7 cells, a human breast cancer cell line. Saturation ligand-binding analysis of $ER{\alpha}\;and\;ER{\beta}$ revealed that all plant extracts competed with estrogen ligand for binding to both ER subtypes with a similar preference and degree and competed stronger with ligand for binding to $ER{\beta}\;than\;to\;ER{\alpha}$. The highest $ER{\alpha}-binding$ sample was silkworm pupa aqueous extract The highest $ER{\beta}-binding$ sample was silkworm pupa oil. These samples were further tested for bioactivity based on their ability to regulate cell growth rate in ER(+) breast cancer cell line, MCF-7 cells. Our studies showed that silkworm pupa, soritae, sesame, yam, pueraria, malt, ginseng, Polygonum multiflorum, and Curcuma longa significantly stimulated the growth of MCF-7 cells (P<0.05). In summary, these results suggested that silkworm pupa and herbs might be useful as potential phytoestrogens.
국내 시판 누룽지의 물리화학적 특성 및 항산화 성질 연구
양지원,최일숙,Yang, Ji-won,Choi, Il Sook 한국식품조리과학회 2016 한국식품조리과학회지 Vol.32 No.5
Purpose: Nurungji is a traditional Korean food made by yellowish scorched rice. After getting gelatinization of rice, a thin crust of scorched rice will usually be left in the bottom of the traditional cooking pot. In this study, physicochemical characteristics and antioxidant properties of five commercial nurungji products (CNP1, CNP2, CNP3, CNP4, and CNP5) were evaluated. Methods: Physicochemical properties of the five commercial nurungji products were evaluated with AOAC method. The antioxidant activities were assessed using the 1,1-diphenyl-2-picryl hydrazyl (DPPH), 2,2-azinobis-(3-ethyl-benozothia zoline-6-sulfonic acid)(ABTS), ferric reducing antioxidant power (FRAP), and reducing power assays. Results: Water content was the highest in CNP3, followed by CNP1, CNP2, CNP5, and CNP4. Crude ash content of all nurungji was less than 1%. In Hunter color parameter, the significantly highest a value (redness) and b value (yellowness) were measured in the CNP4 product, meanwhile the lowest in CNP3 (p<0.05). The nurungji products of CNP4 and CNP5 had the significantly higher content in total polyphenols and total flavonoids, compared to those of other products. CNP3 and CNP2 had the lowest in total polyphenols and total flavonoids, respectively. CNP4 and CNP5 products showed the significantly higher values in antioxidant activities, whereas CNP3 had the lowest activity. Conclusion: The high value of antioxidant activities in CNP4 and CNP5 might have been affected primarily by the total polyphenols with increasing browning color during the heat treatment.
한국의 과학기술 어디까지 왔나 - 발효 기술, 아미노산 발효기술 선진국 수준
양지원,Yang, Ji-Won 한국과학기술단체총연합회 2000 과학과 기술 Vol.33 No.10
우리나라의 생명공학기술 수준은 선진국을 100으로 볼 때 65정도로 열세이지만 분야별로 강세를 보여온 발효기술은 90정도로 선진국에 근접해 있으며 특히 아미노산 발효기술은 높게 평가를 받고 있다. 21세기 선도산업으로 꼽고 있는 생물산업의 경쟁력 우위를 점하기 위해선 더 많은 기술적ㆍ경제적인 투자가 절실하다.
양지원(Yang, Ji-Won),유해연(Yoo, Hae-Yeon) 한국주거학회 2020 한국주거학회 학술대회논문집 Vol.32 No.2
The purpose of this study is to introduce the case of a start-up living lab led by SH Corporation, which can be operated by young architects and residents, and to propose the direction. The purpose of this study is to introduce the case of SH Corporation-led start-up Living Lab, which can be operated by young architects and residents together, and to suggest future improvement directions. This study was conducted in the following processes. First, the definition and background of Living Lab were analyzed. Second, representative cases of domestic living lab operation was analyzed. Third, it revealed the background and purpose of the SH Youth Architect Project. Fourth, the current status, characteristics, and limitations of living labs operated by young architects were analyzed. Finally, the direction of living lab models in urban regeneration projects was proposed.
양지원 ( Ji-won Yang ),이형옥 ( Hyeong-ok Lee ) 한국정보처리학회 2022 한국정보처리학회 학술대회논문집 Vol.29 No.1
개인교수형, 반복학습형, 학습용 게임형, 시뮬레이션형 프로그램등의 교육콘텐츠등의 우수사례인 장애인식교육 이러닝센터와 Simcity 시리즈를 교육 목적, 교육 대상, 관련 교과목, 전달 매체, 전체분량, 프로그램 및 학습 내용의 구조를 바탕으로 분석하여 교육 자료가 필요한 교수자들이 활용할 수 있는 방안을 모색하였다.
거래사례비교법에 의한 표준지공시지가 결정요인의 실증분석
양지원(Yang, Ji-Won),유선종(Yoo, Seon-Jong) 한국주거환경학회 2014 주거환경(한국주거환경학회논문집) Vol.12 No.2
According to the current land appraisal system, officially announced land price plays a base of the real estate appraisal. Study on determinants of officially announced land price is insufficient despite the importance on the real estate appraisal. This study is to identify determinants of officially announced land price, to analyze the influence of each determinant on the evaluation of officially announced land price, and to draw implications including limitations in the process of evaluation. The subjects of the study were 499,384 lots in the nation appraised by sales comparison approach. This study consists of theoretical consideration, analysis of descriptive statistics by each determinant, and regression analysis on hedonic price model. Regression analysis was performed by 2 analysis models on various levels. According to the results of the regression analysis, sales comparables, site forces, other forces have a great influence on the evaluation of officially announced land price. The results present that the application of sales comparablese, other forces should be careful and the comparison of site forces should be conducted by the objective standards. We expect that findings from this study contribute to the more credible and fair system of officially announced land price and real estate appraisal.