• 한국식품영양학회지
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• 제10권2호
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• pp.141-144
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• 1997

국내산 재배 생약류 28종 중 열수 추출물에서 항산화력을 나타낸 것으로 조사된 작약, 목단, 황금, 두충, 시호 그리고 산수유의 열수 추출물 6종을 냉동건조한 후 70% ethanol로 용해하여 ethanol 가용성 획분(ESF)과 ethanol 불용성 획득(EIF)으로 분획하였다. 이 분획물들을 60% linoleic acid에 3,000ppm씩 가한 후 35$^{\circ}C$의 항온기에서 저장하면서 BHA 첨가구와의 산화 안정성을 비교하였다. 이 결과 작약가 항금의 ESF는 유도기간이 각각 12일과 9일인데 반해 BHA 첨가구는 9일로 나타나 산화 안정성이 더 높거나 같은 것으로 나타났다. 한편 6종의 생약류의 ESF는 EIF보다 linoleic acid에 대한 항산화 효과가 모두 높은 것으로 나타났다.

• Biomolecules & Therapeutics
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• 제3권3호
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• pp.210-216
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• 1995

Partially purified water-soluble extract mixture from Ricini and Coptidis (named as RIC) showed to be a potent inhibitor of human immunodeficiency virus-1 (HIV-1) replication. RIC was evaluated for in vitro anti-HIV activity using SupTl and H9 cells infected by a recombinant virus (pSVCAT) containing chloramphenicol acetyltransferase (CAT) gene substituted for nef gene in the HIV-1 genome. RIC inhibited syncytiaformation of SupTl cells with a half maximal effective concentration, $IC_{50}$/, of 2.5 $\mu\textrm{g}$/mι and showed marked inhibition of CAT activity in the infected H9 cells and also suppressed reverse transcriptase (RT) activity in the supernatant of the infected H9 culture. However, RIC did not inhibit the activity of reverse transcriptase directly when it was mixed with the enzyme or with viral particles. Berberine, one of components of RIC, also showed similar anti-HIV activity as RIC did. The data suggest that there are active ingredients which mediate anti-HIV activity in RIC.

• 대한약침학회지
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• 제17권3호
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• pp.7-15
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• 2014

Objectives: The present study investigated the toxic properties of petroleum ether extract of Wattakaka (W.) volubilis in Wistar female rats. Methods: An in vitro brine shrimp lethality bioassay was studied in A. Salina nauplii, and the lethality concentrations were assessed for petroleum ether extract of W. volubilis. A water soluble portion of the test extract was used in different concentrations from $100-1000{\mu}g/mL$ of 1 mg/mL stock solution. A 24-hours incubation with a 1-mL aliquot in 50 mL of aerated sea water was considered to calculate the percentage rate of dead nauplii with test extract administration against a potassium-dichromate positive control. The acute and the sub-acute toxicities of petroleum ether extract of W. volubilis were evaluated orally by using gavage in female Wistar rats. Food and water intake, body weight, general behavioral changes and mortality of animals were noted. Toxicity or death was evaluated following the administration of petroleum ether extract for 28 consecutive days in the female rats. Serum biochemical parameters, such as alanine aminotransferase (ALT), alkaline phosphatase (ALP), bilirubin, total cholesterol, triglyceride, total protein, glucose, urea, creatinine, sodium, potassium and ${\alpha}$-amylase levels, were measured in the toxicity evaluations. Pathological changes in isolated organs, such as the liver, kidneys, and pancreas, were also examined using hematoxylin and eosin dye fixation after the end of the test extract's administration. Results: The results of the brine-shrimp assay indicate that the evaluated concentrations of petroleum ether extract of W. volubilis were found to be non-toxic. In the acute and the sub-acute toxicity evaluations, no significant differences were observed between the control animals and the animals treated with extract of W. volubilis. No abnormal histological changes were observed in any of the animal groups treated with petroleum ether extract of W. volubilis. Conclusion: These results suggest that petroleum ether extract of W. volubilis has a non-toxic effect in Wistar female rats.

• 한국식품과학회지
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• 제30권2호
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• pp.439-445
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• 1998

숙지황 물 추출물의 항돌연변이 활성을 4-nitroquinoline 1-oxide (4-NQO), N-methyl-N'-nitro-N-nitrosoguanidine (MNNG), mitomycin C (MMC), $aflatoxin\;B_1\;(AFB_1)$, benzo(a)pyrene [B(a)P]의 변이원성에 대하여 SOS Chromotest로 조사하였다. 숙지황 물 추출물을 메탄올 가용성 부분과 불용성 부분으로 분리하여 시험한 결과 5종의 변이원의 활성에 대하여 메탄올 가용성 분획은 불용성 분획 보다 강한 억제효과를 나타내었다. 따라서 메탄올 가용성 분획을 에틸아세테이트, 부탄올, 물 분획 순으로 순차용매 분리하였고 그 분획물 중, 물 분획이 5종 변이원의 돌연변이원성에 대하여 가장 강한 억제효과$(4.5{\sim}29.5%)$를 나타내었고, 에틸아세테이트 분획은 $AFB_1$의 변이원성을 촉진하였다. Sephadex LH-20 column chromatography를 이용하여 물 분획을 정제하여 9 분획을 얻었으며, 이들 중 fraction III가 시험한 5종의 변이원으로 각각 유도된 변이원성에 대하여 용량반응의 억제효과와 함께 가장 강한 억제활성을 나타내었다. $400\;{\mu}g/assay$ 농도의 Fraction III는 4-NQO, MNNG, MMC, AFB1 및 B(a)P의 돌연변이원성에 대하여 각각 29, 35, 38, 25, 24% 억제효과를 나타내었다. Fraction III는 4-NQO, AFB1의 변이원성에 대하여 40% 이상의 강한 세포내 항돌연변이원성을 나타내었다.

• 대한의생명과학회지
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• 제19권1호
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• pp.48-54
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• 2013

Atopic dermatitis is a recurrent or chronic eczematous skin disease with severe pruritus and has annually increased in Korea. In this study, we investigated whether Duchesnea chrysantha (Dc) extracts have an anti-inflammatory effect in human monocytic THP-1 cells and human eosinophilic EoL-1 cells. The dried and powdered whole plants of Dc were extracted with 80% EtOH (Dc-1). The residue was diluted with water, and then successively partitioned with n-hexane, EtOAc, and BuOH to produce the n-hexane (Dc-2), EtOAc (Dc-3), BuOH (Dc-4), and the water-soluble fractions (Dc-5), respectively. The mite extract and LPS increased the production of IL-6, IL-8 and MCP-1 in THP-1 cells and the increase was strongly suppressed by Dc-3 extract, as compare with other extracts. Dc-3 also inhibited the release of IL-6 increased by mite extract and LPS in EoL-1 cells. However, Dc-3 extract increased IL-8 production induced by the mite extract and LPS in EoL-1 cells. These results suggest that Dc extract may be used as anti-inflammatory agents in treating allergic disorders such as asthma and atopic dermatitis.

• 산업식품공학
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• 제15권1호
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• pp.80-84
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• 2011

오미자 열매 추출물의 첨가량을 0-50%로 달리하여 식혜를 제조한 후 물리화학적 및 관능적 품질특성을 측정하고 각 특성사이의 상관관계를 살펴보았다. 추출물의 첨가량이 증가함에 따라 식혜의 pH는 유의적으로 감소한 반면 가용성 고형분 함량 및 적색도 ($a^*$값)는 증가하였다(p<0.05). 한편, 밝기를 나타내는 $L^*$값과 황색도를 나타내는 $b^*$값은 추출물의 첨가량과 직접적인 관계를 나타나지 않았다. 관능적 품질특성 중 색, 신맛, 단맛은 추출물의 첨가량과 유의적인 관계를 나타내었다(p<0.05). 상관분석 결과 추출물의 첨가량은 $L^*$값과 $a^*$값을 제외한 모든 물리적 및 관능품질 특성과 유의적인 관계를 나타내었다. 소비자 기호도검사에 의하면 10% 오미자 열매 추출물을 첨가한 식혜의 전체적인 기호도가 다른 시료군에 비해 유의적으로 높음을 알 수 있었다(p<0.05).

• 한국수산과학회지
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• 제19권4호
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• pp.327-332
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• 1986

천연항산화제의 유효이용을 위하여, 생강으로부터 추출한 산항화성물질을 정어리유에 첨가하여 $37^{\circ}C$에서 저장하면서 POV, 산가, TBA가, 중량변화 및 지방산조성 등의 변화를 경시적으로 조사하여 그 항산화성을 검토하였다. 1. 저장중 과산화물가의 변화에 있어서, 생강의 $80\%$ ethanol 추출구와 지용구는 10일 째까지 완만하게 증가하다가 그 이후 빠른 속도로 증가하였으며 수용구는 25일 째까지 완만하게 증가하였다. 2. 저장중 TBA가의 변화는 수용구가 10일 째까지 완만히 증가하다가 그 이후 비교적 빠른 속도로 증가한 반면 $80\%$ ethanol 추출구와 지용구는 초기부터 비교적 빠른 속도로 증가하였다. 3. 저장중 산가의 변화에 있어서 대조구는 10일째부터 빠른 속도로 증가하였는데 수용구는 30일 째까지 완만한 증가를 나타내었다. 4. 저장중 중량변화에 있어서 대조구는 15일 째까지 빠른 속도로 증가하였는데 $80\%$ ethanol 추출구는 20일 째 약 $3.5\%$, 지용구는 $1.7\%$, 증가한 반면 수용구는 약 $0.5\%$ 증가하였다. 5. 저장중 지방산조성을 살펴보면 저장초기에 포화산은 약 $41.4\%$ 이었으며 $C_{14:0}$가 약 $9\%$, $C_{16:0}$가 $28.9\%$로서 포화산의 $90\%$ 이상을 차지하였고, monoene산은 $19.0\%$로서 $C_{16:1}$이 약 $9\%$, $C_{18:1}$이 $8.6\%$로서 monoene산의 대부분을 차지하였으며 polyene산은 약 $32.1\%$로서, $C_{20:4},\;C_{20:5},\;C_{20:6}$이 그 대부분을 차지하였다. 생강의 각 추출구를 첨가한 후 저장 40일 째의 지방산조성을 살펴보면 대조구에 있어서 포화산이 약$62.2\%$이고 monoene산은 $29.0\%$, polyene산은 약$5.6\%$인데, polyene산의 경우 저장초기에 비하여 약$26.5\%$ 감소하였는데 $C_{20:4},\;C_{20:5},\;C_{22:6}$이 주감소요인으로 작용하였다. $80\%$ ethanol 추출구. 지용구 및 수용구도 이와 비슷한 경향을 나타내었지만 대조구에 비하여 모두 polyene산의 감소비율이 작았는데 특히 $C_{22:6}$의 경우 수용구의 감소비율이 가장 적었고 다음으로 지용구 $80\%$ ethanol 추출구의 순이었다.

• 약학회지
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• 제40권4호
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• pp.462-467
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• 1996

Forsythiae Fructus was studied on cytotoxic activities for the purpose of finding out active consituents against L1210 and HL60 cells. To isolate the active ones, the methanolic extract was partitioned into water insoluble and water soluble fractions. Furthermore, the water soluble fraction was fractionated into four parts, n-hexane, benzene, ethylacetate and water fractions. Among these, the water insoluble fraction showed the most potent cytotoxic activities on L1210 and HL60 cells in vitro. The water insoluble fraction was applied to silica gel column chromatography and divided into 5 fractions(fr. 1-5). The active constituents I and II were isolated from fr.2 and 3, respectively, by repeated silica gel column chromatography and recrystallization. The constituents were identified as 3${\beta}$-acetylbetulinic acid and betulinic acid by means of physicochemical data. The $ED_{50}$ values of 3${\beta}$-acetylbetulinic acid and betulinic acid were 9.10 and 16.43${\mu}g$/ml against L1210 cells and 2.72 and 2.41${\mu}g$/ml against HL60 cells, respectively.

• 한국식품영양과학회지
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• 제27권3호
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• pp.461-470
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• 1998

The effects of addition of water extract of pine needle(WEPN) on texture and cell wall polysac-charides content of kimchi during fermentation at 1$0^{\circ}C$ were investigated. Textural properties of hardness, gumminess and cohesiveness of kimchi were higher for WEPN-added kimchi than for the control during the entire fermentation periods, while its adhesiveness was lower. Alcohol insoluble substance, among cell wall polysaccharide fractions of kimchi was higher in WEPN-added kimchi than in the control but water soluble materals was high in control during fermentation periods. The separation phenomenon of middle lamella of control kimchi tissue was observed at 14th days of fermentation but WEPN-added kimchi showed at 21th days fermentation. The vasular of kimchi tissue was more destroyed in control than in WEPN-added kimchi.

• Journal of Ginseng Research
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• 제16권2호
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• pp.99-104
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• 1992

Korean red ginseng and water extract residue of red ginseng roots were treated with dry heat and incorporated in PDA medium to examine the effect of the materials on induced tolerance against mercury chloride and mycelial growth of Fusarium oxysporum. Ginseng residue was not effective in the inducement of tolerance to mercury chloride regardless of dry heat treatment. However, the heat treatment of ginseng and ginseng residues stimulated the mycelial growth of the fungus. The materials responsible for the detoxification appeared to be water-soluble. The stimulation of the fungal mycelial growth on the media by the heat treatment was highest in the water extract of ginseng. Due to the heat treatment, the mycelial growth was also slightly increased in n-hexane and methanol extracts of ginseng, compared with the ginseng fractions without dry heat treatment.