• Title/Summary/Keyword: 전환능력

Search Result 563, Processing Time 0.017 seconds

Antioxidant, Antimicrobial and Anti-inflammatory Effects of Anemarrhena asphodeloides Extracts using Supercritical Extraction (초임계 추출을 이용한 지모추출물의 항산화, 항균, 항염 효과)

  • 안규민;박수인;김민기;신문삼
    • Journal of Investigative Cosmetology
    • /
    • v.14 no.4
    • /
    • pp.455-462
    • /
    • 2018
  • This study aimed to investigate the antioxidant, antimicrobial and anti-inflammatory effects of Anemarrhena asphodeloides extracts using supercritical extraction. In the antioxidant test, the total concentration of polyphenol compounds was determined to be 22.58 mg/g (supercritical extraction), 18.75 mg/g (ethanol extraction) and 17.69 mg/g (hydrothermal extraction). The DPPH radical scavenging effects were 89.84% (ethanol extraction) and 64.86% (supercritical extraction) at 2000 mg/L. ABTS radical scavenging ability had an IC50 value at 250~500 mg/L for supercritical extraction, higher than that for hydrothermal and ethanol extractions. At 1000 mg/L, elastase inhibition rates were 64.08% for ethanol extraction and 45.84% for supercritical extraction. The antimicrobial effect of the supercritical extraction was higher than that of hydrothermal and ethanol extractions. NO production with stimulated LPS was decreased in a concentration-dependent manner and, at 20 ㎛/mL, NO production was reduced by 77% for supercritical extraction compared with 46% (ethanol extract) and 63% (hydrothermal extract). Here, we confirmed that superficial extracts of Anemarrhena asphodeloides displayed excellent antioxidant, antimicrobial and antiinflammatory effects and have potential to be used as a safe and natural cosmetic material in the future.

Situation of Fertilizer Industry in Korea (비료산업(肥料産業)의 현황(現況)과 문제점(問題点))

  • Lee, Yun Hwan
    • Korean Journal of Soil Science and Fertilizer
    • /
    • v.15 no.1
    • /
    • pp.34-48
    • /
    • 1982
  • 1. Production and consumption of chemical fertilizers in Korea could be divided into five different phases of total imports, setting up fertilizer plants, self-sufficiency in production, net export, and diversification in compound fertilizers. Currently the nation has production capacity of 800 thousand M/T of nitrogen, 400 thousand M/T of phosphate ($P_2O_5$) and 200 thousand M/T of potash ($K_2O$). 2. Yearly consumption increased every year, since 1964, 28,000 M/T N, 7,700 M/T $P_2O_5$, and 7,500 M/T $K_2O$ until 1972, when the increase jumped by eight times for $P_2O_5$ and seven times for $K_2O$ for the following 3 years in anticipation of their short supply. Now total consumption has been more or less stabilized at the level of 450 thousand M/T N, 220 thousand M/T $P_2O_5$ and 180 thousand M/T $K_2O$ for the last 7 years. 3. Current operation rate of fertilizer plants is around 80% throughout the whole industry, after going through several different levels depending on demand at times. 4. Fertilizer export started in 1967 and reached a peak of 150 thousand nutrient ton in 1972, about 20% of total production, before temporarily stopping due to over-demand for next three years. The export resumed again in 1976 rise to the all time high of 670 thousand nutrient ton in 1980, almost half of total production, and then started to decline due to higher price of petroleum since then. 5. The decline in fertilizer export appears to be accelerated because several countries, in South-Eastern Asia, traditional export market for Korean fertilizers, started to build their own plants, since 1980, based on their raw materials of especially petroleum. 6. Current consumption in Korea is about 30 nutrient Kg per 10a, equivalent to that in Western European countries, partly due to new high-yielding rice varieties and extensive cultivation of fruit trees and vegetables. Additional fertilizer demand in future can be anticipated in reclaimed land for growing grass and forestry.

  • PDF

An Analysis of the Psychiatric Characteristics of the Alopecia Areata in Female (여성 탈모증의 정신의학적 특성 분석)

  • Lee, Kil-Hong;Na, Chul;Lee, Young-Sik;Lee, Chang-Hoon;No, Byung-In;Hong, Chang-Kwon
    • Korean Journal of Psychosomatic Medicine
    • /
    • v.8 no.1
    • /
    • pp.31-45
    • /
    • 2000
  • Objectives : The present study was performed to reveal differences between female and male cases of alopecia in their alopecia related variables such as patterns of hair loss, psychiatric characteristics, associate illnesses, and methods of treatment, and to use them as basic materials for proper management and early prevention of the alopecia prone cases. Methods : In order to analysis the gender difference in hair losses, the subjects were divided into two subgroups as the 51 cases of female alopecia and the 42 cases of male alopecia, who had visited to the department of psychiatry consulted from the department of dermatology, Yongsan hopital, ChungAng University, Seoul, Korea, from January 1998 to December 1998. In data analysis, the subjects were statistically assesed by chi-squre test and analysis of varaiance, through SPSS-$PC^+$ 9.0V. Results : 1) Female subjects were more likely showed lower socio-economical level including lower eonomical level, lower educational level, or lower occupational level in their parent's job, were more likely to have larger number of siblings and to have many sisters comparison to the male cases. 2) Female subjects were more likely visited to the department of dermatology, more history of alopecia in their female family members, lesser history of alopecia in their male family members, more loss of hairs in vertex or frontal region of scalp, lesser loss of hairs in occipital region, and lesser nail changes in comparison to the male cases. 3) Female subjects were more suffered from intra-familial conflicts and economical changes, or their introverted personality makeup, lesser likely suffered from changes of business and health changes, and showed lesser conflicts related with poorer adaptaion in their job life. 4) Female subjects were more likely diagnosed as depression or conversion disorders, more frequently complaint anxiety symptoms or depressive symptoms, higher level of anxiety index, lesser complaint somatization or obsessive compulsive symptoms, and lesser diagnosed as anxiety disorder in comparison to the male cases. 5) Female subjects were more likely tended to show personality makeup such as the introverted, the lie, the repressed, or the feminine trends than the male cases. 6) Female subjects were more significantly treated by antianxiety drug such as etizolam and dermatological therapies include tretinoin, and lesser treated by clotiazepam and prednicarbonate in comparison to the male cases. Conclusion : From the facts that The most important factors in developing hair loss in the female subjects in comparison to the male cases seems to be closely correlated with the serious psychopathology such as the presence of mental disorders including depression, the presence of complaining anxiety or depressive symptomatology, the presence of stressful life events such as intrafamilial life changes, and the presence of personality makeup such as the introverted, the lie, the repressed, or the feminine trends, the authors confirmed that dermatologists act as the primary care physician are in a unique position to recognize psychiatric comorbidity and execute meaningful intervention for female patients with the alopecia with psychiatrists.

  • PDF