국가식품클러스터 패키징센터의 추진방향

정준재,Jeong, Jun-Jae (사)한국포장협회 2015 包裝界 Vol.265 No.-

대학이 지역주민의 자긍심에 미치는 영향

정준재(鄭埈在),이대희(李大熙) 한국공공관리학회 2019 한국공공관리학보 Vol.33 No.4

본 연구는 중소도시 소재 대학의 역할이 지역주민의 자긍심에 어떤 영향을 미치는지를 분석하는데 목적을 두었다. 특히 대학이 쇠락하는 지역의 경우에도 대학의 역할에 대한 지역주민의 자긍심이 그대로 나타날 수 있는지를 파악하는데 초점을 두었다. 이를 위해 최근에 폐교 또는 재정 제한 대학이 있는 전국 8개 지역 주민 414명을 대상으로 대학의 역할과 지역주민의 대학 자긍심간 인과성을 분석하였다. 그 결과, 대학의 역할 정도가 높은 지역에서 대학에 대한 자긍심이 높은 것으로 나타났다. 또한 변수별 영향력에 있어서도 사회적, 교육적, 문화적 역할 순으로 매우 뚜렷했다. 반면, 경제적 역할의 경우에는 대학 자긍심에 아무런 영향력을 갖지 못하는 것으로 나타났다. 이는 대학이 쇠락할 경우 지역사회에서 대학의 경제적 역할이 가장 빠르게 사라질 수 있다는 것을 의미한다. 동시에 이러한 현실적 측면의 경제적 역할 기대감은 줄어들더라도 주민들은 지역소재 대학의 사회적, 교육적, 문화적 역할과 같은 상징적 측면에서의 자긍심은 대학 쇠락 이후에도 한동안은 줄어들지 않을 수 있다는 것을 시사한다. 이러한 결과를 토대로 본 연구는 현재 지속적으로 증가 추이를 보이는 쇠락 대학에 대한 지역 및 국가차원의 향후 대응과제에 대해 논의하였다.

젖당과 미결정 셀룰로오스 함량에 따른 니자티딘 속방정 방출 거동

정준재(Jun Jae Jung),김진우(Jin Woo Kim),김필윤(Pil Yun Kim),김원경(Won Kyung Kim),송정은(Jeong Eun Song),강길선(Gilson Khang) 한국고분자학회 2020 폴리머 Vol.44 No.4

Recently, patients suffering from unexpected chronic diseases such as gastric ulcer and reflux esophagitis are increasing due to irregular eating habits, frequent stress, and excessive drinking. Nizatidine is a histamine receptor antagonist that inhibits gastric acid production by locally binding to the histamine H2 receptor and is mainly used as a treatment for gastric ulcer and reflux esophagitis. Lactose can increase drug volume and provide moderate water solubility, but it decreases hardness. To confirm the increase of hardness and stability of drug when lactose is blended with microcrystalline cellulose to make solid dispersion, nizatidine, lactose and microcrystalline cellulose solid dispersion was manufactured by rotary evaporator in methanol/dichloromethane cosolvent condition. For characterization of the solid dispersion, SEM, DSC, XRD and FTIR were performed, and then drug release was confirmed through an in vitro dissolution test. A relatively good inclusion rate was confirmed in a solid dispersion having a ratio of lactose and microcrystalline cellulose of 3:7, and an ideal behavior of immediate release tablet was confirmed by this. As the result of this, it can be confirmed that nizatidine and lactose/microcrystalline cellulose can be used as immediate release tablet for reflux esophagitis.

중소기업 구성원들의 조직지원인식이 학습조직 구축수준에 미치는 영향 : 정서적 조직몰입의 매개효과

정준재 ( Jeong Jun Jae ),이진구 ( Lee Jin Gu ) 한국인력개발학회 2017 HRD연구 Vol.19 No.2

The purpose of this study was to investigate the influences perceived organizational support on level of the learning organization and the mediating effect of affective organizational commitment between the two variables. For this purpose, the survey was conducted among 207 employees from the small organizations. However, 205 out of 207 surveys were used to analyze the result. Used SPSS 21.0 and AMOS 21.0 statistical package programs to analyze the reliability, validity, correlation, structural equation modeling. The result of this research are as follow: Firstly, perceived organizational support positively affects affective organizational commitment. Secondly, perceived organizational support positively affects level of the learning organization. Thirdly, it has been identified that affective organizational commitment have a positive impact on level of the learning organization. Fourthly, it has been identified that affective organizational commitment performs as a meditation in the relationship between the perceived organizational support and level of the learning organization. Through the research, it has been proven that the employees` perceived organizational support need to increase in order to develop a level of the learning organization and affective organizational commitment in proportion. Based on research results, the various implications of the research are discussed.

이차포장을 통한 유과의 저장성 연장

정준재(Jun Jae Jung),이근택(Keun Taik Lee) 한국식품과학회 2010 한국식품과학회지 Vol.42 No.4

본 연구는 유과의 품질과 저장성 향상을 위한 포장기술개선을 목적으로 이차포장의 효과를 확인하기 위하여 실시되었다. 유과의 포장은 단일필름인 OPP(P1)를 사용하여 일차포장을 하였고, 다층접합필름인 OPP/LLDPE(P2), PET/NY/CPP(P3), PET/AL/NY/CPP(P4)를 각각 사용하여 각각 이차포장을 하였다. 포장된 유과는 25℃에서 12주 동안 저장하면서 품질 변화와 저장수명을 조사하였다. 모든 포장군들 중 산가는 P1에서 1.26 ㎎ KOH/g으로 가장 높은 값을 기록했지만, 저장말기까지 법적 기준치인 2.0 ㎎ KOH/g보다는 낮게 나타났다. 산가는 저장기간 중 계속 증가하였는데 포장재의 투과도가 낮은 이차포장군일수록 증가추세가 완만하였다. 과산화물가는 P3에서 32.91 meq/㎏으로 가장 높은 값을 기록하였다. 색의 변화에서는 전반적으로 Hunter ‘L’값이 감소하고 Hunter ‘a’와 ‘b’값은 증가하는 경향을 보였으며 저장기간 중 P1에서의 색차가 가장 두드러졌다. 유과의 물성은 각 항목에서 P1은 경도, 검성, 탄력성과 응집성, P2은 부서짐성 품질의 변화가 가장 컸던 것으로 나타났다. 또한 수분차단성이 가장 높은 P4에서 모든 물성의 변화가 가장 낮게 나타났다. 관능검사 시 P1 등을 제외한 이차포장군에서 10주까지도 외형의 변화가 두드러지지 않았음이 관찰되었다. 유과의 조직감을 결정하는 수분함량은 5%이하로 감소되면 관능검사 시 조직감이 나쁘게 나타난 것으로 관찰되었다. 결론적으로 OPP필름으로 일차포장하는 것보다 산소와 수증기차단성이 높은 필름으로 이차포장할 경우 조사된 모든 품질지표가 개선되고 저장성이 향상되었으며 차단성이 높은 처리구일수록 그 효과가 높았다. 유과의 이차포장에 따라 포장비용이 증가되겠지만 제품의 품질유지기간 연장 및 반품율 저하, 그리고 소비자 만족도 제고에 따른 상품성 및 브랜드가치 향상 등 긍정적 효과를 감안하여 목적하는 저장유통기간에 부합되는 최적의 이차포장방법을 적용하는 것이 바람직할 것으로 판단된다. This study aimed at improving the packaging technology of Yukwa to improve the quality and extend the shelflife using secondary packaging. After packaging the Yukwa using an OPP film, P2, P3, and P4 packaging materials were applied secondarily. Various films including (1) P1: OPP (oriented polypropylene), (2) P2: P1+OPP/LLDPE (linear low density polyethylene), (3) P3: P1+PET (polyethylene terephthalate)/NY (nylon)/CPP (cast polypropylene) and (4) P4: P1+PET/AL (aluminum)/NY/CPP (P4) were used for packaging Yukwa. The experiment was conducted at 25℃ for 12 weeks. P1 showed the highest acid value score (1.26 ㎎ KOH/g), and P3 had the highest peroxide value score (32.91 meq/㎏) among all packaging groups. Nevertheless, these values did not exceed the guideline values of 2.0 g KOH/g and 40 meq/㎏ specified in the Korean food code. The overall color difference showed a tendency for decreasing Hunter ‘L’ values and increasing ‘a’ and ‘b’ values; however, no noticeable difference in the outer appearance was observed in any of the packaging treatments except in the P1 for greater than 10 weeks of storage. Some texture defects were observed in the Yukwa when the moisture contents dropped below 5%. The P4 packaging treatment had the lowest moisture permeability and showed the least rheological deterioration change, followed by P3 and P2. In conclusion, the use of a secondary packaging with less gas and moisture permeability was more effective for maintaining the quality and extending the shelf-life of Yukwa than other types of packaging material.

신선 멜론의 수출포장개발에 관한 연구

이명훈,정준재 한국포장학회 2009 한국포장학회지 Vol.15 No.3

PBAT/PLA-ZnO 항균 복합필름의 특성 및 식품포장재 적용 연구

권구윤,신봉수,김제섭,우지안,정준재,고성혁 한국포장학회 2024 한국포장학회지 Vol.30 No.3

본 연구에서는 PBAT, PBAT/PLA, PBAT/PLA-ZnO 0.5%, PBAT/PLA-ZnO 2.0%의 총 4종의 PBAT 기반 친환경 항 균 복합필름을 제조하고 이화학적, 기계적 및 산소차단 특 성과 항균성 평가 및 식품의 품질 지속효과 분석을 통해 식품포장소재로서 적용 가능성을 조사하였다. 제조된 복합 필름의 SEM 분석을 통해 ZnO의 혼입이 PBAT와 PLA 계면의 결합과 혼화성을 개선시킴을 확인하였으며 FTIR 분 석 결과 PBAT/PLA 복합필름 고유의 화학적 구조에 변화 가 없음을 확인하였다. 또한, PBAT/PLA 복합필름의 경우 기계적 특성과 산소차단성 모두 PBAT 대비 감소한 반면, ZnO를 첨가한 PBAT/PLA-ZnO 복합필름의 연신율과 산소 차단성은 증가하였다. 특히, PBAT/PLA-ZnO 2.0% 필름의 경우 538.0%의 연신율을 나타내어 522.7%의 PBAT와 유 사한 수준으로 회복하였으며, 산소투과도는 26.92 mm*cc/ m2*day로 확인되어 PBAT 대비 약 60% 산소차단성이 향 상되었다. 또한, PBAT/PLA-ZnO 0.5% 및 2.0% 복합필름 은 E. coli에 대하여 99.9% 이상의 우수한 항균성을 보였 으며 식빵에 적용한 간이 저장성 평가에서 LDPE 및 PBAT/ PLA 파우치와 비교해 뚜렷한 품질 유지 효과를 나타내었다. In this study, poly(butylene adipate-co-terephthalate)(PBAT) and poly(lactic acid)(PLA) were compounded with zinc oxide nanoparticles(ZnONPs) to evaluate their potential in antimicrobial food packaging application. PBAT, PBAT/ PLA, PBAT/PLA-ZnO 0.5%, and PBAT/PLA-ZnO 2.0% composite films have prepared via blown extrusion and characterized for physicochemical, oxygen barrier and antimicrobial properties. SEM results revealed smoother surface resulting from decreasing PLA agglomerates with addition of ZnO. PBAT/PLA film has lower strength and flexibility than those of PBAT because of dissimilarity of chemical affinity. In contrast, PBAT/PLA-ZnO composite films showed the same flexibility as PBAT and highly enhanced oxygen barrier property due to the better compatibility between PBAT and PLA and the inclusion of ZnO inside leading to interfere gas diffusion. PBAT/PLA-ZnO composite films exhibited excellent antimicrobial activity against E. coli with over 99.9% of reduction. In addition, as a result of storage test using bread, ZnO-containing PBAT/PLA composite films are very effective in securing food quality by preventing microbiological contamination.

포장방법에 따른 세절 생울금의 저장 중 품질 변화

김동후,한진수,우인봉,정준재,박시우,허경철,하주형,윤찬석 한국포장학회 2017 한국포장학회지 Vol.23 No.3

The purpose of this study was to investigate the quality change of fresh-cut tumeric (Curcuma Longa Linne) according to packaging method during storage time. The fresh-cut tumeric were packaged in three different methods : degassing valve packaging (DVP), CO2 gas absorber packaging (CAP) and micro-perforated packaging (MPP). After the samples were packaged, they were stored for 15 days at 4 and 23oC respectively. The following parameters were observed to indicate the quality changes of the samples: weight loss, CIE L*a*b* colour difference, variation of gas composition inside the package, curcumin contents and changes in hardness of fresh-cut tumeric. DVP did not effectively release CO2 gas to the outside. MPP was suitable to release CO2 gas. However, MPP showed very fast browning and erosion, because a large amount of oxygen was introduced through the perforated hole on the film. CAP was most effective packaging method to inhibit browning, to prevent expansion of the packaging by CO2 gas and to minimize weight loss of freshcut tumeric.

쿠에티아핀 푸마르산을 함유하는 방출제어 캡슐제의 용해특성

김필윤(Pil Yun Kim),정준재(Jun Jae Jung),김남영(Nam Yeong Kim),김진우(Jin Woo Kim),최정민(Jeong Min Choi),이원찬(Won Chan Lee),송정은(Jeong Eun Song),강길선(Gilson Khang) 한국고분자학회 2020 폴리머 Vol.44 No.5

Quetiapine fumarate (QF) is a BCS CLASS II with low solubility and high permeability, which has a problem of low bioavailability. It has also been reported that Quetiapine possesses two hydroxyl groups, so it has a higher solubility under acidic conditions. The solubility is low in the range of pH 4 or higher and it is high when pH is 2, and it decreases when the pH is lower than 2 which is due to ion effect. Therefore, capsules were prepared using immediate-release and sustained-release granules to improve the solubility of QF and induce constant release even with a change in pH. XRD and DSC were used to evaluate the crystallinity and inclusion of drugs, SEM was used for morphological analysis, and FTIR was used to analyze chemical changes. In addition, fluidity was evaluated to confirm that it was improved by granulation process. Finally, the solubility patterns of solid dispersions and capsules were analyzed by a solubility test.

Evaluation of Hyaluronic Acid/Agarose Hydrogel for Cartilage Tissue Engineering Biomaterial

최주희,김진수,김원경,이원찬,김남영,송철의,정준재,송정은,강길선 한국고분자학회 2020 Macromolecular Research Vol.28 No.11

Hyaluronic acid (HA) is one of the most applied biomaterials in a tissue engineering field due to its biocompatibility and its presence in the native extracellular matrix (ECM) of tissues. However, the mechanical property of the HA is weak and requires specific treatment to improve its properties. The application of Agarose (AG) hydrogel is widely studied and used as a support for the three-dimensional culture of cells due to its biocompatibility. Nevertheless, AG itself lacks the biological environment of the matrix which is unsuitable for the growth of the encapsulated cells. In this study, the composite of HA hydrogel and AG hydrogel (HA/AG hydrogel) is proposed to supplement the drawbacks of each hydrogel. HA provided enhanced microenvironment of matrix and AG improved the mechanical properties and assisted the cells. The characterization of the blended hydrogels was carried out with FTIR, weight loss, swelling ratio, and compressive strength study. The biocompatibility and biological environment of the composite was evaluated by dimethylthiazol-2-yl-2,5-diphenyltetrazolium bromide; thiazolyl blue (MTT), live/dead staining, and morphological study. The composite biomaterial exhibited applicability for cartilage tissue engineering and the in vitro study of the cell-laden HA/AG hydrogel displayed potential for cartilage tissue engineering in the future.