• 문화기술의 융합
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• 제8권6호
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• pp.943-951
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• 2022

본 연구에서는 사과, 배, 무 등 8종 과채류를 절단하고 열수추출물과 과채류 증숙열수추출물을 제조하고 실험기질로 사용하였다. 실험기질에 홍삼추출물 1%(W/V)와 유산균발효 추출물에 유산균 8종 혼합스타터를 첨가하여 발효한 결과, ginsenosides의 패턴과 함량은 과채류 추출물군과 증숙 처리군에서는 거의 변화가 없었다. 그러나 유산균 발효군에서는 발효과정과 처리에 따라 TLC 패턴이 변하여 Rg₃(S) 및 Rg₅으로 전환되는 진세노사이드 함량이 증가하였다. 4종의 과채류추출물 모두에서 유산균 수(cfu)의 변화는 관찰되지 않았다. 유산균 CFU의 수는 과채류 추출물의 4가지 발효군에서 약간 감소하였으나 유익균의 생장 억제 효과는 유의하게 나타나지 않았다. 3가지 유해균의 증식억제 효과는 4가지 과채추출물에서 대장균과 슈도모나스의 증식에 영향을 받지 않았다. 그러나 살모넬라균의 증식은 억제되었으며, 이는 과채류 증숙 열수추출물 및 홍삼추출물 첨가 여부에 관계없이 과채류 추출물의 생장억제효과로 확인되었다.

• 대한화장품학회지
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• 제33권1호
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• pp.41-45
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• 2007

통상적으로 식물의 열매, 잎, 뿌리 등의 추출물이 가지는 다양한 효능이 밝혀짐에 따라 점차 천연소재에 대한 관심이 증가하고 있는 추세이다. 본 연구에서는 복분자 딸기로부터 얻은 4종(미숙과, 완숙과, 잎/줄기, 뿌리의 에탄을 추출물)의 각기 다른 추출물에 대한 항산화, 미백, 항주름 효과를 비교하였다. 복분자 딸기의 항산화 및 항염 효과에 대한 몇몇의 보고가 있지만 효능에 대한 연구는 충분하지 않다. 따라서 복분자 추출물의 화장품적 효능 효과를 비교한 결과, 미백효과 및 주름개선효과에 있어, 미숙과부위의 추출물이 다른 부위의 추출물에 비하여 효과가 높은 것으로 관찰되었다. 이 결과를 바탕으로 복분자 딸기의 미숙과는 완숙과나 잎/줄기, 뿌리보다 화장품 원료로 더 높은 응용 가능성을 가지고 있음을 알 수 있었다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2018년도 추계학술대회
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• pp.110-110
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• 2018

The purpose of this study was to evaluate the improved antioxidant activity of Aronia extract fermented by lactic acid bacteria isolated from fermented seafoods. Aronia fruits were collected from Sunchang, Chonbuk, South Korea. And these collected fruits were lyophilized for fermentation. For the selection of effective lactic acid bacteria useful for fermentation. Aronia fermented by lactic acid bacteria that isolated from fermented seafood was extracted with 60% ethanol. Antioxidant activity of Aronia extract was evaluated on the DPPH radical scavenging activity and total polyphenol contents were studied. To determine the optimal fermentation conditions, the changes of antioxidant efficacy was evaluated by controlling temperature (25, 30, 37, $40^{\circ}C$), Time (0~5 day) and inoculation dose of lactic acid bacteria (0.125~0.5ml). To confirm the antioxidative effect of Aronia fermented under optimal conditions, the DPPH & ABTS radical scavenging activity, total polyphenol & flavonoid contents were compared before and after fermentation were studied. 16 different kinds of lactic acid bacteria were isolated from fermented seafood, and of which antioxidant activity of Aronia fermented by Pediococcus pentosaceus B1 was maximum. Aronia fermentation at $37^{\circ}C$ was maximized when fermented for 3 days and fermentation time is decreased as the start inoculation amount of lactic acid bacteria increased. The degree of increase in antioxidant activity after Aronia fermentation is that DPPH & ABTS radical scavenging activity was increased about 27%, 20% and total polyphenols & flavonoids contents was increased about 12%, 15%. In the result of this experiment indicated that fermentation process enhances the antioxidant efficacy of Aronia.

• 한국균학회지
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• 제40권4호
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• pp.258-265
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• 2012

국내 고추 재배지에서 고추탄저병균인 C. gloeosporioides에 대해 균사생장이나 포자발아 억제력이 우수한 균주를 선발하였다. 선발된 균주의 생리 생화학적특성과 MicroLog 방법을 이용하여 동정한 균주는 Paenibacillus sp. IUB225-08로 명명되었다. 항진균물질의 최적 생산을 위한 배양 조건은 pH 7.0, $25^{\circ}C$에서 60시간인 것으로 나타났다. Paenibacillus sp. IUB225-08를 배양한 액체배지에 부탄올을 첨가하여 분획한 물질과 시판 농약의 C. gloeosporioides에 대한 균사생장과 포자 발아억제 효과를 조사한 결과 부탄올 분획물이 시판 농약에 비해 고추탄저병균의 균사생장과 포자발아를 크게 억제하는 것으로 나타났다. 또한 고추열매와 고추종자에 C. gloeosporioides 포자와 부탄올로 분획한 물질을 동시에 접종한 결과 부탄올 분획물이 고추와 고추종자의 병 발생을 억제하는 것으로 나타났다. 따라서 본 연구를 통해 Paenibacillus sp. IUB225-08가 생산하는 항진균 물질은 고추탄저병의 생물적 방제제로 사용될 수 있는 잠재력이 있다고 판단되었다.

• Advances in Traditional Medicine
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• 제10권3호
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• pp.200-207
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• 2010

The fruits of Piper cubeba L. are used traditionally to treat respiratory disorders in Indonesia. In order to determine the compounds responsible for this activity, the fruits were extracted with nhexane followed by ethanol to give n-hexane and ethanol extracts. Based on tracheospasmolytic assay on these two extracts, the n-hexane extract was more active to inhibit trachea contraction than that of ethanol extract. Upon bioassay guided isolation of the n-hexane extract, a tracheospasmolytic active compound was isolated and identified as dihydrocubebin [(3,4),(3',4')-bis-methylenedioxy-9,9'dihydroxylignan] $(\underline{1})$. Compound $\underline{1}$ was tested further for its ability to inhibit histamine released from mast cells, using rat basophilic leukemia (RBL-2H3) cell line and rat peritoneal mast cells RPMCs) as models; and $DNP_{24}$-BSA, thapsigargin, ionomycin, compound 48/80 and PMA were used as inducers for histamine released from mast cell. The test result showed that $\underline{1}$ inhibited histamine release from RBL-2H3 cells induced by $DNP_{24}$-BSA, thapsigargin and ionomycin. In addition, $\underline{1}$ suppressed histamine release from RPMC induced by either thapsigargin or ionomycin. However, $\underline{1}$ did not inhibit histamine release from RPMC induced by either compound 48/80 or combination PMA-sub optimum dose of ionomycin. Therefore, it was concluded that the inhibitory effects of $\underline{1}$ on the histamine released from mast cells may involve mechanisms related to intracellular $Ca^{2+}$ signaling events or downstream processes of intracellular $Ca^{2+}$ signaling in mast cells.

• 한국미생물·생명공학회지
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• 제51권4호
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• pp.432-440
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• 2023

Irrational and injudicious use of antibiotics, easy availability of them as over-the-counter drugs in economically developing countries, and unavailability of regulatory policies governing antimicrobial use in agriculture, animals, and humans, has led to the development of multi-drug resistance (MDR) bacteria. The use of medicinal plants can be considered as an alternative, with a consequent impact on microbial resistance. We tested extracts of Piper longum fruits as new natural products as agents for reversing the resistance to antibiotics. Six crude extracts of P. longum fruits were utilized against a clinical isolate of multidrug-resistant Staphylococcus aureus.The antibiotic susceptibility testing disc method was used in the antibiotic resistance reversal analysis. Apart from cefoxitin and erythromycin, all other antibiotics used (lincosamides [clindamycin], quinolones [levofloxacin and ciprofloxacin], and aminoglycosides [amikacin and gentamicin]) were enhanced by P. longum extracts. The extracts that showed the greatest synergy with the antibiotics were EAPL (ethyl acetate [extract of] P. longum), n-BPL (n-butanol [extract of] P. longum), and MPL (methanolic [extract of] P. longum The results of this study suggest that P. longum extracts have the ability to increase the effectiveness of different classes of antibiotics and reverse their resistance. However, future studies are needed to elucidate the molecular mechanisms behind the synergy between antibiotic and phytocompound(s) and identify the active biomolecules of P. longum responsible for the synergy in S. aureus.

• 약학회지
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• 제36권6호
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• pp.548-555
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• 1992

The biological activities of fruits of Poncirus trifoliata have been studied. 70% Ethanol extract of Ponciri Fructus was fractionated with ether, ethyl acetate and n-butanol by turns. The ether fraction showed antibacterial activity on Staphylococcus aureus and inhibited the contractability of the isolated mice ileum. The ethyl acetate and n-butanol fractions showed the anti-edematous effect on the carrageenin-induced edema of rat hindpaw. From the n-butanol fraction, one of the flavonoid glycoside was isolated and identified as poncirin. Ponciri Fructus contained about 6% poncirin which was 5,7-dihydroxy-4´-methoxy flavanone rhamnoglucoside and poncirin showed antiinflammatory activities. Poncirin was considered as the major effective component of Ponciri Fructus.

• Bulletin of the Korean Chemical Society
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• 제26권3호
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• pp.447-450
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• 2005

The crude methanol extract of the fruits of Amomum tsao-ko (Zingiberaceae) showed cytotoxic activity. Bioactivity-guided separation led to the isolation of a diarylheptanoid, tsaokoarylone [7-(4-hydroxy-3-methoxyphenyl)-1-(4-hydroxyphenyl)-hepta-4E,6E-dien-3-one] (2). 2 showed cytotoxicity at 4.9 and 11.4 $\mu$g/mL ($IC_{50}$) against human nonsmall cell lung cancer A549 and human melanoma SK-Mel-2, respectively, determined by SRB colorimetric method. During purification-(4-hydroxyphenyl)-4-hydroxyhexan-2-one (4) together with three known diarylheptanoids was also isolated. Their structures were determined from interpretation of spectroscopic data (IR, UV, MS, and NMR) and synthesis confirmed the structure of 2.

• 생약학회지
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• 제25권4호통권99호
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• pp.328-335
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• 1994

The ether soluble fraction of the methanol extract from the fruits of Crataegus pinnatifida var. psilosa was applied to silica gel column chromatography, eluted step-gradiently with a mixture of dichloromethane and methanol, repeatedly, and five compounds were isolated. These compounds are identified as ursolic acid(I), corosolic acid(II) and euscapic acid (III), ${\beta}-sitosteryl-3-O-{\beta}-_D-glucopyranoside(IV)$ and hyperin(V).

• 생약학회지
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• 제4권4호
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• pp.189-190
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• 1973

Silica gel column chromatography on the ether extract from the fruits of Angelica gigas $M_{AKAI}$ gave two kinds of crystalline constituents. The following derivatives of coumarins were identified by IR, NMR spectra, elemental analysis and physico-chemical tests: iso-imperatorin $(mp\;108{\sim}109^{\circ},\;C_{16}H_{14}O_4)$ and decursidin $(mp\;60{\sim}61^{\circ},\;C_{24}H_{26}O_7)$.