• Research Article

    Comparative Analysis of Antioxidant, Anti Aging and Phenolic Compounds of Different Solvent Extracts from Saccharina japonica and Costaria costata

    추출용매에 따른 쇠미역과 다시마의 항산화, 항노화 활성과 페놀화합물 비교분석

    Hyun-Hwa Lee, Jin-Sol Kim, Jun-Han Jeong, Chun Sung Kim, Sook Young Lee

    이현화, 김진솔, 정준한, 김춘성, 이숙영

    This study analyzed the polyphenol, flavonoid contents, antioxidant activity, anti-aging activity and phenol component contents of Saccharina japonica (SJ), Costaria costata (CC) … + READ MORE
    This study analyzed the polyphenol, flavonoid contents, antioxidant activity, anti-aging activity and phenol component contents of Saccharina japonica (SJ), Costaria costata (CC) extracts with hot water, 95% methanol, 95% prethanol for investigating possible utilization of SJ and CC extracts. The result revealed that the SJ and CC methanol extracts showed the highest polyphenol and flavonoid contents, 4.63 mg TAN/g, and 4.19 mg QUE/g respectively. Also, the SJ and CC methanol extracts showed higher antioxidant activity than prethanol and hot water extracts, whereas the ABTS radical scavenging activities were the highest in prethanol extracts (IC50 = 15.4, 10.3 ㎍/μL). In anti-aging activity for evaluating the anti-wrinkle activity and skin whitening activity, the CC methanol extracts had high collagenase inhibitory activity (88.3%), and the SJ prethanol extracts showed higher elastase inhibitory activity (19.0%) compared to other extracts. Then the tyrosinase inhibitory activity was significantly higher in the SJ and CC methanol extracts (41.8, 30.3%, respectively), whereas prethanol extracts were the lowest. To identify the phenol component contents of SJ and CC extracts, 4-hydroxybenzoic acid, naringenin, naringin and nicotinic acid were measured using LC-MS/MS. As a result, the phenol contents were the highest in SJ methanol extract (4-hydroxybenzoic acid), SJ and CC prethanol extract (naringin and naringenin) and CC prethanol extract (nicotinic acid). Lastly, the antioxidant activity of SJ and CC showed high correlations with polyphenol and flavonoid contents (R = -0.946~0.883). These results suggest that prethanol or methanol extracts of SJ and CC have higher antioxidant activities, anti-aging activity and the potential to be used as material for health functional food and cosmetics. - COLLAPSE
    PDFXMLCitation
    ReferencesInformation
    1 April 2023

  • Research Article

    A Taxonomic Review of Melampyrum L. in Korea by the External Morphological Characters

    외부형태학적 형질에 의한 한국산 며느리밥풀속(Melampyrum L.)의 분류학적 재검토

    Jae hyeon Lee, Jeong Seon, Chae Sun Na, Gyu Young Chung

    이재현, 정선, 나채선, 정규영

    The external morphological characters of six taxa of the genus Melampyrum in Korea (M. roseum, M. roseum var. japonicum, … + READ MORE
    The external morphological characters of six taxa of the genus Melampyrum in Korea (M. roseum, M. roseum var. japonicum, M. roseum var. ovalifolium, M. setaceum, M. setaceum var. nakaianum, and M. koreanum) were observed to identify the taxonomic entity. The taxonomically useful characters, confirmed in this study, were as follows; the shape of leaf and bract, the number and location of the setose teeth at bract margin, the shape of cross-section and distribution of hair on the stem, the shape of bract base, the shape and protuberance type of calyx lobes, the color and length of the corolla, and the shape of the capsule. Based on these results, a key to the Korean Melampyrum taxa is provided. - COLLAPSE
    PDFXMLCitation
    ReferencesInformation
    1 April 2023

  • Research Article

    Preservation and Management Plan through the Analysis of Plant Resources and Functions of Algific Talus Slope as a Climate Change Shelter

    기후변화 피난처로서 풍혈지의 식물자원 및 기능 분석을 통한 보전 및 관리방안

    Tae-Young Hwang, Jong-Won Lee, Ho-Geun Yun, Wan-Geun Park, Jong-Bin An

    황태영, 이종원, 윤호근, 박완근, 안종빈

    This study was conducted to prepare basic data by analyzing the biological values and environmental factors of algific talus slope in order … + READ MORE
    This study was conducted to prepare basic data by analyzing the biological values and environmental factors of algific talus slope in order to respond to climate change due to the greenhouse effect, and to establish plans for forest biodiversity preserving and managing. Meteorological information was measured and the flora of vascular plants were investigated for six algific talus slope by seasonally from 2020 to 2021. As a result of the investigation, the temperature of all 6 algific talus slope was lower than that of the area where the algific talus slope was located in summer, and flora was 101 families, 350 genera, 621 species, 18 subspecies, 57 variants, 7 varieties, 703 taxa. In sum, it is judged that the algific talus slope has sufficient reasons and value to be preserved because it has excellent micrometeorological value from the cold wind blowing in summer and phytogeographical value in which various plants live in a small area. However, in spite of such an important area, the management of algific talus slope is insufficient, and the algific talus slope is damaged or the ecosystem of the algific talus slope is disturbed. Therefore, it is necessary to establish a systematic conservation and management plan by designating algific talus slope as a forest genetic resource reserve and OECM. - COLLAPSE
    PDFXMLCitation
    ReferencesInformation
    1 April 2023

  • Research Article

    Physiological and Growth Responses of M. thunbergii to Different Levels of Fertilization

    시비처리에 따른 후박나무의 생리 및 생장 반응

    Jung-Won Sung, Yeong Geun Song, Haeun Koo, Hyeon Hwa Kim, Se Min Byun, Chae Rim Lee, Seok-Gon Park, Kyeong Cheol Lee

    성정원, 송영근, 구하은, 김현화, 변세민, 이채림, 박석곤, 이경철

    In the current study, four groups; control, 500, 1000, and 2000 ㎎/L, were treated to investigate the effects of physiological and growth … + READ MORE
    In the current study, four groups; control, 500, 1000, and 2000 ㎎/L, were treated to investigate the effects of physiological and growth characteristics on Machilus thunbergii under various fertilization levels. As a result of the physiological response to the fertilization treatment, the fertilized group demonstrated relatively higher levels of A, ITE, WUEi, Vcamx, PIabs, and SFIabs in comparison to the control. The best photosynthetic mechanism was most clearly seen at 1000 ㎎/L, which involved gas exchange through active stomatal opening and closing. For a productive photosynthetic mechanism. As seen in the growth response of M. thunbergii to fertilization treatment, the fertilized group has significantly higher height, DRC, leaf dry weight, stem dry weight, total dry weight, LWR, and SWR than the control group. A healthy seedling quality index was particularly evident at 1000 ㎎/L, and other growth indicators were also at a decent level. 500 ㎎/L also demonstrated growth characteristics that were comparable to those at 1000 ㎎/L. As a result, M. thunbergii featured the best physiological and growth characteristics in response to the fertilization treatment at 1000 ㎎/L, and 500 ㎎/L also showed a similar trend, which is considered to be a good option from an economical perspective. - COLLAPSE
    PDFXMLCitation
    ReferencesInformation
    1 April 2023

  • Research Article

    Studies on Growth Characteristics and Propagation Method of Introduced Hop (Humulus lupulus L.) Cultivars

    홉(Humulus lupulus L.) 도입 품종의 생육특성 및 영양번식 연구

    Tae Hyun Ha, Jae Il Lyu, Jun-Hyung Lee, Jaihyunk Ryu, Sang Hoon Park, Si-Yong Kang

    하태현, 유재일, 이준형, 류재혁, 박상훈, 강시용

    Domestic hop (Humulus lupulus L.) production has been suspended since the early 1990s due to foreign imports, but interest in local … + READ MORE
    Domestic hop (Humulus lupulus L.) production has been suspended since the early 1990s due to foreign imports, but interest in local production is rising due to the recent craft beer boom in Korea. This study was conducted focusing on the development of growth characteristics and propagation technology for 6 introduced hop cultivars as a basic study for domestic hop production and breeding program. In the hop growth survey conducted in 2021 and 2022, the 5-year-old plants after planting generally showed a tendency to increase the height of strobile setting, strobile size, number and weight of strobile per hill compared to the 4-year-old plants. As a result of the experiment with hop vine cuttings, the average rooting rate of all cultivars was as high as 88% even in only water treatment that were not added with Atonik (Atonik, Arysta, Japan), a rooting agent. There were differences between cultivars in rooting length and rooting rate according to the Atonik treatment method. When checking the survival rate of the rooted cuttings seedlings after transplanting into the soil, it was confirmed that the survival rate of the cuttings in the tissue culture room was significantly lower than that of the cuttings in the greenhouse. However, in transplanting step, cutting plants from culture room condition was strongly inhibited plant growth because of changing environment conditions. As a results of tissue culture, the thidiazuron (TDZ) 1 ㎎/L treatment in the media generated 6 to 9 shoots/explant, while the 6-benzylaminopurine (BAP) 1 ㎎/L treatment generated only 1 to 2 shoots/explant. Therefore, it is more effective to culture by adding TDZ rather than BAP. These results indicated that the development of technology to manage stably after transplanting of cutting or micropropagating plants into potting soil is important for mass propagation of hops. - COLLAPSE
    PDFXMLCitation
    ReferencesInformation
    1 April 2023
리스트형 보기썸네일형 보기
Journal Informaiton Korean Journal of Plant Resources Korean Journal of Plant Resources
Online Submission
  • NRF
  • KOFST
  • KISTI Current Status
  • KISTI Cited-by
  • crosscheck
  • orcid
  • ccl
Journal Informaiton Journal Informaiton - close