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최재후,유지혜,최승혁,최혜림,이지영,김수현,이재근,허권,유창연 한국약용작물학회 2018 한국약용작물학술대회 발표집 Vol.2018 No.10
Background : Miscanthus is a species of flowering plant in the family poaceae, native to Eastern Asia throughout most of China, Japan, Taiwan and Korea. It is diploid hybrid grass used as bioenergy plant, biomass production and high quality of cellulose and ethanol production. It is an herbaceous perennial grass, growing up to 0.8 - 3.0 m tall, rarely 4.0 m, forming dense clumps from an underground rhizome. Recently, Studies on Miscanthus have been carried out on the growth characteristics and to see the antioxidant difference of Miscanthus for functional materials in various regions. Methods and Results : This study carried out the antioxidant activities of Miscanthus collected from different countries of origin. Two hundred one accessions of Miscanthus were collected in 7 countries (China, Japan, Korea, Taiwan, Thailand, U.S.A, Zambia). Initially, each leaves were extracted with 70% ethanol to determine actioxidant activty. Antioxidant activities were evaluated by DPPH and ABTS radical scavenging activity. The highest DPPH radical scavenging activity showed in the accession [M. sinensis ‘Kleine Silberspinne (little silver spider)’] from U.S.A (RC50: 10.66 ± 15.46 ㎍/㎖) and the lowest showed in the accession (M. sinensis ‘Supr Stripe’) from U.S.A (RC50: 188.03 ± 0.86 ㎍/㎖). The ABTS radical scavenging activity showed the highest in the accession (No.401: JM0310.002) from Japan (RC50: 17.97 ± 3.26 ㎍/㎖) and the lowest showed in the accession (M. sinensis ‘Supr Stripe’) from U.S.A (RC50: 416.88 ± 10.05 ㎍/㎖). Conclusion : The antioxidant activity of Miscanthus showed in average DPPH radical scavenging activity (RC50: 74.05 ± 3.74 ㎍/㎖) and ABTS radical scavenging activity (RC50: 81.46 ± 3.95 ㎍/㎖). In this study, it may be used for feed crops or food crops as a functional material.
기내배양한 땃두릅나무 유식물체의 용토배합별 순화 및 생육특성 비교
최재후,김희영,유지혜,최승혁,최혜림,이현우,최윤정,성은수,김명조,유창연 한국약용작물학회 2018 한국약용작물학술대회 발표집 Vol.2018 No.05
Background : Oplopanax elatus, comnonly called Asian devil’s club, is distributed in the northern high mountains of the Korean peninsula, northeastern China, and southeastern Russia. Its root is traditionally used to treat asthma, depressive states, chronic fatigue syndrome, and hypertension, neurasthenia, hypopiesis, schizophrenia, cardiovascular problems, diabetes mellitus, impotence, emaciation, hypotension cough, rheumatism, arthritis, gastrointestinal disorders, and wounds. Plant cell and tissue culture techniques for the mass production of adventitious roots in suspension culture allows a high proliferation rate, stable accumulation rate, and production of valuable compounds. Methods and Results : The plants were cultured on 1/4 MS medium with 1% sucrose and 1% plant agar for 3 month and they transferred to pot. The pots were contained of soil, soil + pelite (1 : 1), and soil + sand (1 : 1), respectively. The plants were measured plant length, leaf length, and leaf number. The number of leaves have represented as similar result of 7.44 ± 1.34 ㎝ in soil and 7.56 ± 1.26 ㎝ on soil + pelite. The 3.22 ± 0.53 ㎝ of plant length and the 6.57 ± 0.51 ㎝ of leaves length were highest on soil. Conclusion : The survival rate depending on soil types of Oplopanax elatus was confirmed to exist in these cases of soil and soil+pelite. However, they all died in condition of soil+vermiculite. The number of leaves have no difference and the length of plant and the length of leaves were longest on soil.
21세기의 리더십 : Hospitality 산업에서의 Authentic Leadership
최재후 한국산업경영학회 2006 한국산업경영학회 발표논문집 Vol.1 No.-
1.연구주제<BR> 리더십은 미래 지향적이다 과연 새로운 환경에서의 리더십은 어떤 것일까? 특히 변화가 심한 Hospitality 산업에서의 리더십은 어떠한 리 일 k를 구명하려는 노력.<BR> 2.연구방법<BR> 문헌탐구와 비교를 통해 최근의 리더십과 Authentic Leadership을 비교 분석함.<BR> 3.연구결과<BR> 새로운 경영환경의 Hospitality 산업에서, Authentic Leadership의 적용이 적절하다.<BR> 4. 연구의 공헌<BR> 일반적인 리더십 이론의 접근보다는, 맞춤 리더십 이론을 도입하여, 새롭게 생성하는 산업에 초점을 두고 접근함.<BR> 5. 미래의 연구 방향<BR> 다른 신산업 분야에도 다양하게 적용하고, 행동과학적 자료를 도출하여 리더십의 효과성을 실험적으로 도출할 수 있다.
최재후,이재근,성은수,유지혜,김철중,이기혜,안영섭,박충범,임정대,유창연 韓國藥用作物學會 2013 한국약용작물학회지 Vol.21 No.6
This study was investigated to evaluate germination rate of Astragalus membranaceus B. in Korea as affectedby storage temperature, germination temperature and storage period of seed. The highest germination rate was obtainedfrom condition of 25℃ in germination temperature. Seeds were stored at-20℃ and 5℃ for 8 weeks has showed higher ger-mination rate than one at room temperatures. The germination rates showed significantly difference by harvested year of2010, 2011 and 2012. The seed of A. membranaceus in harvested year of 2011 and 2012 had germinated well. On the otherhand, seeds in harvested year of 2010 were not nearly germinated. Consequently, the longer storage period after seed har-vest lower germination rate and seed vigor as well.