학동기 영양교육 및 영양표시 인지가 영양섭취 수준에 미치는 영향

한경식,황효정,권소영,김선아,김진민,봉민지,송예지,안나영,이현경 한국식품영양학회 2018 한국식품영양학회 학술대회논문집(학술심포지움) Vol.2018 No.12

수종의 버드나무과 유관속 형성층의 구조에 관한 비교연구

한경식 한국자원식물학회 1998 한국자원식물학회지 Vol.11 No.3

Vascular cambium in 16 species of Salicaceae is nonstoried in all of them and is made up of fusiform and ray initials. The growth of cambial girth occurred by pseudotransverse division of fusiform initials and subsequent apical intrusive growth of daughter initials. The measurements of fusiform initials in tangential sections have revealed that the average length varies from 252.2-437.1㎛ in investigated species, with the maximum being in Populus euramericana and the minimum in Salix purprea var. multinervis. The length of fusiform initials depends on the length of the tapering end wall, therefore, the longer the length of the tapering end wall, the longer the length of fusiform initials. Ray initials have their own size, magnitude, and frequency of occurrence in each species. The relative proportion of ray initials fall about 15.0-24.5% in Salicaceae. Shrubby species of Salix have a lower ratio of ray initials than the species which possess wider trunks. New ray initials are originated from cut off the side or the end of fusiform initials and central partition of a fusiform initials.

눈개승마를 첨가한 식물성 대체육 패티의 아미노산 조성 비교 연구

한경식,신경옥,황효정,정태환,이유진,조은채,한준우,이재림 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10

본 연구는 눈개승마를 활용하여 식물성 대체육 패티를 개발하였으며, 이를 시판용 식물성 패티 및 동물성 패티와 아미노산 조성을 비교·분석하였다. 필수아미노산의 경우 식물성 대체육 패티와 시판용 식물성 패티에는 leucine > phenylalanine > threonine > Isoleucine 순으로 함량이 높았으며, 시판용 동물성 패티에는 lysine > threonine > valine > phenylalanine > Isoleucine 순으로 나타났다. 비필수 아미노산의 경우 세 가지 패티 모두 glutamic acid > aspartic acid > arginine 순으로 높게 조사되었다. 특히, L형 아미노산의 경우 식물성 대체육 패티에서는 L-alanine, L-leucine, L-lysine, 시판용 식물성 패티는 L-glutamic acid, L-alanine, L-arginine, 시판용 동물성 패티에서는 taurine, L-alanine, L-carnosine 순으로 함량이 높았다. 본 연구를 종합해 볼 때, 눈개승마를 첨가한 식물성 대체육 패티는 시판용 식물성 패티와 비교했을 때 아미노산 성분에 큰 차이가 없다고 판단된다.

명아주의 일반성분, 항산화활성 분석 및 흰쥐의 혈중 생화학적 분석에 관한 연구

한경식,정태환,신경옥 한국식품과학회 2019 한국식품과학회지 Vol.51 No.5

The purpose of this study was to develop new food materials by analyzing nutritional components and antioxidant activities of Chenopodium album var. centrorubrum. The highest amount of mineral obtained in C. album was found to be 1.01±0.07 mg per 100 g of iron. The total phenolic content in C. album was found to be 3.77~9.57 GAE (gallic acid equivalent) mg/g. The reducing activities of leaves and roots of C. album determined using FRAP (ferricreducing antioxidant power) were higher in ethanol extracts than water extracts. The ABTS radical scavenging activities of leaves and roots of C. album were 204.29±4.98 μmol/g and 106.96±2.81 μmol/g, respectively. The DPPH radical scavenging activity was high upon extraction using ethanol (roots 20.71±0.04 μmol/g, leaves 71.08±0.33 μmol/g). HDLcholesterol was significantly higher in the high fat diet groups supplemented with C. album than the control groups (p<0.05). These results suggest that C. album can be used as a natural antioxidant and a functional dietary supplement.

Is Intravesical Bacillus Calmette-Guérin Therapy Superior to Chemotherapy for Intermediate-risk Non-muscle-invasive Bladder Cancer? - An Ongoing Debate

한경식,유달산,정인갑,권택민,홍범식,홍준혁,안한종,안태영,김청수 대한의학회 2015 Journal of Korean medical science Vol.30 No.3

The objective of this study was to evaluate the risk of recurrence in patients withintermediate-risk non-muscle-invasive bladder cancer (NMIBC) after intravesical instillationwith chemotherapeutic agents or Bacillus Calmette-Guérin (BCG) therapy. A cohort of 746patients with intermediate-risk NMIBC comprised the study group. The primary outcomewas time to first recurrence. The recurrence rates of the transurethral resection (TUR) alone,chemotherapy, and BCG groups were determined using Kaplan-Meier analysis. Risk factorsfor recurrence were identified using Cox regression analysis. In total, 507 patients (68.1%),78 patients (10.5%), and 160 (21.4%) underwent TUR, TUR+BCG, or TUR+chemotherapy,respectively. After a median follow-up period of 51.7 months (interquartile range =33.1-77.8 months), 286 patients (38.5%) developed tumor recurrence. The 5-yrrecurrence rates for the TUR, chemotherapy, and BCG groups were 53.6% ± 2.7%,30.8% ± 5.7%, and 33.6% ± 4.7%, respectively (P < 0.001). Chemotherapy and BCGtreatment were found to be predictors of reduced recurrence. Cox-regression analysisshowed that TUR+BCG did not differ from TUR+chemotherapy in terms of recurrence risk. Adjuvant intravesical instillation is an effective prophylactic that prevents tumor recurrencein intermediate-risk NMIBC patients following TUR. In addition, both chemotherapeuticagents and BCG demonstrate comparable efficacies for preventing recurrence.

물오리나무의 둘레에 따른 維管束形成層과 材要素의 變化

韓京植,蘇雄永 又石大學校 1988 論文集 Vol.10 No.-

The changes in the vascular cambium and wood elements of Alnus hirsuta (Sprecht) Ruprecht have been investigated in relation to the girth of the tree axis. The fusiform initials gain a gradual size increase to start and later remain more or less constant in their length and width. The ray initials gradually increase in height and later remain more or less constant, while the width of the ray initials keep constant. Wood elements undergo considerable changes in their dimension with the growing girth of the the tree axis and their changing trends are equal to the vascular cambium.

樹冠部를 제거한 이태리 포플러에서 維管束 形成層과 그 誘導組織의 比較解剖

韓京植,蘇雄永 全北大學校 基礎科學硏究所 1994 基礎科學 Vol.16 No.-

樹冠部를 제거하여 정단부로부터 생장조절물질과 대사산물의 공급이 차단된 이태리 포플러와 정상 개체에서 형성층 시원세포와 그 유도세포의 변이 양상을 밝히고자 본 연구를 시도하였다. 줄기의 둘레가 증가됨에 따라 방추형 시원세포, 도관절 및 사관절의 크기는 樹冠部를 제거한 개체에 비해, 정상 개체에서 더 큰 것으로 나타났다. 이러한 차이는 형성층 시원세포의 분열빈도, 낭세포의 소실율 및 신장율이 정상 개체에서 더 높은데 기인되는 것으로 여겨진다. 또한 방사조직의 높이도 樹冠部가 제거된 개체에 비해 정상 개체에서 더 높은 것으로 나타났다. The size variation of the cambial initials and their derivatives, in relation to the increase of girth, in the intact and decapitated stem of Populus euramericana was anatomically studied. In the typical nonstoried cambium of P. euramericana, the cell size of fusiform initials, vessel member, and sieve tube member were gradually increased and thus it reached a maximal state. In the intact plants, the size of the cambial initials and their derivatives was larger than in the decapitated ones. On the other hand, the frequency of anticlinal division of the cambial cells, the rate of the elongation and loss of the daughter initials in the intact plants was higher than in the decapitated ones. The cambium of the intact plants had higher ray compared with that of the decapitated ones. It was interpreted that these results were caused by the decapitation, which could block the supply of certain substances for cell growth such as hormones and metabolites.

아카시아나무의 줄기에 있어서 形成層의 活動과 放射組織 發生

韓京植,蘇雄永 全北大學校 基礎科學硏究所 1991 基礎科學 Vol.14 No.2

아카시아나무에서 一期 및 二期放射組織의 發生을 理解하기 위해 解剖學的 硏究를 수행하였다. 髓近處에서 一期放射組織의 높이는 점진적으로 감소하는 반면 幅과 단위면적당 數는 점진적으로 증가한 다음 높이, 幅 및 數가 어느정도 일정하게 된다. 二期放射組織은 一年次生長層의 중간에서 紡錘形始原細胞의 分割 또는 紡錘形始原細胞의 側部 및 末端部가 분리되어 起源된다. 그리고 二期放射組織의 높이와 幅은 어느정도 증가된 후 일정하게 維持된다. An anatomical study was conducted in order to elucidate the development of primary and secondary ray in Robinia pseudoacacia L. The height of primary ray near pith decreases progressively toward periphery, while the width and number per unit area gradually increase, and then the height, width and number remain somewhat constant. Secondary ray originates from the segmentation of fusiform initials or division of the side or end of fusiform initials at the middle of the first growth layer. And after the height and width of secondary ray increases to some extent, it remains constantly.

감나무와 벽오동 뿌리의 둘레증가에 따른 형성층 원시세포와 그유도세포의 발생학적 변화

한경식 우석대학교 자원개발연구소 1996 자원개발연구소논문집 Vol.1 No.-

본 연구는 감나무와 벽오동의 뿌리에서 둘레증가에 따른 형성층 시원세포와 그 유도세포의 발생학적 변화를 밝히기 위하여 시도되었다. 전형적인 계층상 형성층을 갖는 감나무와 벽오동의 뿌리에서 방추형 시원세포는 비계층상 형성층에 비해 상당히 더 짧았으며 형성층의 둘레증가는 대체로 방사수층분열에 의해 일어났으나 간혹 위횡단분열에 의해서도 일어났다. 방추형 시원세포, 도관절 및 사관절의 길이는 2기생장의 진행에 관계없이 일정하게 유지된 반면 섬유의 길이는 증가되는 경향을 보였다. 방사조직의 높이와 단위면적당 수가 감나무에서는 일정하게 유지된 반면 벽오동에서는 높이는 현저하게 감소되나 방사조직의 수는 다소 증가되었다. 새로운 2기방사조직은 방추형 시원세포의 분할 및 측부 또는 말단부가 분리되어 기원되었다. This study has been conducted to investigate the developmental changes of cambial initials and their derivatives in relation to the growing girth of root in Diospyros kaki and Firmiana simplex. In the root of D. kaki and F. simplex with typical storeyed cambium. fusiform initials are considerable shorter than those of a nonstoreyed cambium. Increase of girth in the cambium occurred by radial anticlinal division in general. however occasionally the increase was companied by pseudotransverse division. The length of fusiform initials, vessel element, and sieve tube member remained relatively constant throughout the secondary growth but that of fiber showed general tendancy to increase with growing girth of root. During the girth increase of root. height and number of ray per unit area remained constant in D. kaki. However in F. simplex. height of ray markedly decreased while the number of ray more or less increased. The secondary ray originated by segmentation or division of the side or end of fusiform initials.

물오리나무[Alnus hirsuta(S_PACH)Rupr.] 줄기의 둘레에 따른 維管束形成層과 二期木部의 構造的 變化

韓京植,蘇雄永 全北大學校 基礎科學硏究所 1991 基礎科學 Vol.14 No.2

물오리나무의 둘레에 따른 維管束形成層과 二期 木部要素의 構造的 變化를 硏究하였다. 紡錘形原始細胞의 길이와 幅은 漸進的으로 增加된 後 一定하게 維持되었다. 放射組織原始細胞는 높이가 漸進的으로 增加된 後 安定되는 反面 幅과 數는 一定하였다. 木部要素는 둘레의 增加에 따라 상당한 變化를 겪었으며 그들의 構造的 變化傾向은 形成層과 類似하였다. The structural changes in the vascular cambium and secondary xylem Alnus hirsuta(S_PACH) Rupr, have been investigated in relation to the girth of the tree. The fusiform initials gain a gradual size increase and later remain more or less constant in their length and width. The width of the ray initials remain constant but their heights gradually increase before becoming almost constant. Xylem elements undergo considerable changes in their dimension with the growing girth of the tree and their trends of structural changes are the same as those of cambium.