• 한국식품과학회지
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• 제52권5호
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• pp.482-486
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• 2020

Cases of inflammatory bowel diseases including ulcerative colitis are increasing in Korea and development of non-steroidal anti-inflammatory drugs (NSAIDs) are widely investigated. Natural products with anti-inflammatory properties are rising as safe candidates for NSAIDs. The extract of turmeric or puffed turmeric mixed with herbal extract (goji berry, liquorice, lycium root, and dong quai) was treated to acute colitis mice by oral gavage. The symptoms of colitis, i.e., body weight loss, fecal score, and shortened colon length, were significantly attenuated by puffed turmeric extract with the herbal extract. Non-puffed turmeric extract with herbal extract, however, exhibited a very marginal recovery. Tissue culture supernatant of colons further revealed that both puffed turmeric and non-puffed turmeric extracts with herbal extract suppressed pro-inflammatory cytokine production at a comparable level. These results indicate that puffing is a simple and promising process of turmeric for enhancement of anti-inflammatory properties.

• 한국식품영양학회지
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• 제25권1호
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• pp.181-187
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• 2012

Grifola frondosa has been used as an herbal medicine for the treatment of cancer, diabetes mellitus and high blood pressure. In this study, functional polysaccharide was obtained from Grifola frondosa using four different extraction methods: hot water(HwFP), homogenize(HgFP), acid(AcFP), and alkali(AlFP) extraction methods. The effects of these extracts on KB and HepG2 cell lines were then examined for any anti-cancer activity. Alkaline extraction produced a yield of 0.175% and the total sugar content of the extract was 54.97%. We were able to confirm that the polysaccharide extracts from the mushroom produce an anti-cancer effect. The cytotoxicity of AlFP and AcFP against HepG2 cells were 22.86% and 28.88%, respectively, and the cytotoxicity of AlFP against the KB cell lines was 47.76% at a concentration of 1,000 ${\mu}g/m{\ell}$. Therefore, these results suggest that the optimum method for extracting functional polysaccharides from G. frondosa is the alkali extraction method.

• 약학회지
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• 제39권1호
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• pp.1-5
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• 1995

As a continuation of the previous study, a second group of sixty two aqueous extracts(freeze dried) from natural products was screened for the inhibitory effect of platelet activating factor(PAF) binding to rabbit platelet using 0.6 nM [$^{3}$H]PAF as a radioligand. The results demonstrated that three medicinal plants inhibited 40~50% of [$^{3}$H]PAF equilibrium binding at the concentration of 200 $\mu\textrm{g}$/ml.

• 한국약용작물학회:학술대회논문집
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• 한국약용작물학회 2009년도 심포지엄 및 춘계학술발표회
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• pp.151-152
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• 2009

• 한국식품저장유통학회지
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• 제21권1호
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• pp.82-90
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• 2014

본 연구는 인공 재배 산채의 생산량 및 산채의 가공제품의 개발의 증대함에 따라 야생 및 재배 참취의 품질 특성을 비교하고자 재배 및 야생 참취의 건조방법에 따른 항산화성을 비교 분석하였다. 참취의 열수 추출물의 수율은 야생 참취에 비해 재배 참취에서 수율이 높았고, 블랜칭 건조 추출물의 수율이 높았다. 야생 참취 추출물의 총 폴리페놀과 플라보노이드의 함량은 재배 참취 추출물보다 높았으며, 건조방법에 따른 총 폴리페놀의 함량은 블랜칭 건조 추출물에서 높았고, 플라보노이드의 경우에는 생채 추출물에서 높았다. 참취의 열수 추출물의 전자공여능은 농도가 증가함에 따라 증가하였고, 블랜칭 건조의 열수 추출물에서 높은 전자공여능을 보였다. 참취 열수 추출물의 SOD 유사활성능은 추출물의 농도가 높아질수록 증가하였으며, 생채 열수 추출물에서 다른 추출물에 비해 높았다. pH 1.2에서의 아질산염 소거능은 야생 및 재배의 생채, 블랜칭건조, 생채건조 열수 추출물 순으로 높았다. Xanthine oxidase 저해활성은 열수 추출물의 농도가 증가할수록 저해효과가 높았으며, 생채건조 추출물에서 가장 높았다. Tyrosinase 저해활성과 환원력은 농도가 증가함에 따라 블랜칭 건조열수 추출물에서 높게 나타났다. 따라서 참취의 재배 및 건조 방법에 따른 열수 추출물은 항산화성이 우수하여 천연항산화 소재 및 기능성 식품소재로서의 활용 가능한 약용식물자원이며, 이를 활용한 가공산업 발전의 기초자료가 될 것으로 생각된다.

• 대한본초학회지
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• 제27권4호
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• pp.73-80
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• 2012

Objectives : Under normal condition melanin protects the skin from extracellular stimuli including ultraviolet (UV)-induced oxidative skin damages, but excess production and accumulation of melanin can induce hyperpigmentation causing esthetic problems. Therefore, in this study we tried to search for natural skin whitening materials from marine natural resources. Methods : Water and ethanol extracts of marine natural resources were prepared from Porphyra thalli (PT), Laminariae thallus (LT), Ostreae concha (OC), Sargassum thallus (ST), Undaria thallus (UT), Codium thalli (CT), Enteromorpha thalli (ET), Syngnathoides biaculeatus (SB), and Hippocampus coronatus (Hc). Their effects against UVB and ${\alpha}$-melanocyte stimulating hormone (${\alpha}$-MSH)-induced melanogenesis were investigated based on melanin formation in B16 mouse melanoma cells. The mRNA and protein expression of enzymes involved in the melanogenic process were further examined by reverse transcriptase-polymerase chain reaction (RT-PCR) and Western blot analysis, respectively. Results : Water extract of Ostreae concha (OCW/E) effectively inhibited UVB and ${\alpha}$-MSH-induced melanin production in B16 melanocytes, which seemed to be mediated by inhibition of mRNA expression of tyrosinase and tyrosinase-related protein 1 (TRP-1). In another experiment, ethanol extracts from Porphyra thalli (PTE/E), Laminariae thallus (LTE/E), Sargassum thallus (STE/E), Undaria thallus (UTE/E), Codium thalli (CTE/E), Syngnathoides biaculeatus (SBE/E), and Hippocampus coronatus (HcE/E) significantly suppressed UVB and ${\alpha}$-MSH-induced melanin formation. Furthermore, ethylacetate fraction isolated form LTE/E (LTE/EEt) decreased UVB and ${\alpha}$-MSH-elevated extracellular melanin levels via inhibition of tyrosinase protein expression. Conclutions : These results suggest that marine natural resources such as Porphyra thalli, Laminariae thallus, Ostreae concha, Sargassum thallus, Undaria thallus, Codium thalli, Syngnathoides biaculeatus and Hippocampus coronatus have anti-melanogenic effects, thereby exhibiting high potentials to be utilized as one of the ingredients for the development of new whitening functional cosmetics.

• Natural Product Sciences
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• 제10권5호
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• pp.217-219
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• 2004

Cissus quadrangularis L. variant I (Family: Vitaceae), the common variant with square stem is widely used for peptic ulcer disorders (PUD) in traditional medicine. Aerial parts were collected during flowering and vegetative seasons and analysed. Aqueous (hot and cold) and solvent extracts (acetone, chloroform and ethanol) were screened for their anti-Helicobacter pylori (Hp) activities. Among them chloroform extract was observed to recover bioactive principles markedly with low minimal inhibitory concentration (MIC) and minimal lethal concentration (MLC). MIC was $30\;{\mu}g$ in both samples and MLC was $35\;{\mu}g$ for vegetative and $30\;{\mu}g$ for flowering seasons, respectively. Extracts from samples collected during flowering season were better than thse of vegetative season.

• Natural Product Sciences
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• 제7권1호
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• pp.9-12
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• 2001

A number of Myristica species are used in herbal medicine for a variety of ailments. The methanol extracts of the leaves and the stem and root barks of Myristica subabulata were fractionated into petrol, dichloromethane and finally ethyl acetate. These were then screened against a total of 31 micro-organisms comprising of 13 G +ve, 12 G ve, one protozoa and 5 moulds. A broad-spectrum anti-bacterial activity was observed. As compared to fractionated the un-fractionated extracts exhibited much better level of activity.

• 생약학회지
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• 제40권3호
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• pp.190-195
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• 2009

Osteoblasts play an important role in bone metabolism by bone formation. Natural medicines having a stimulatory activity on osteoblast proliferation and differentiation can improve bone diseases such as osteoporosis. The methanol extracts of 159 herbal medicines were screened for the stimulatory activity on osteoblast proliferation by MTT assay and differentiation in the presence of ascorbic acid and $\beta$-glycerophosphate. Among the tested extracts, Alpiniae Semen, Amomi Semen, Anemarrhenae Rhizoma, Bambusae Folium, Cannabis Semen, Dalbergiae odoriferae Lignum, and Luffae Fructus Retinervus showed relatively strong stimulatory activity on osteoblast proliferation, whereas Amomi Semen showed strong stimulatory activity on osteoblast differentiation.

• Natural Product Sciences
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• 제9권1호
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• pp.1-3
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• 2003

Hemidesmus indicus var. indicus belonging to the family Asclepiadaceae was screened for its activity against Helicobacter pylori(Hp) human isolates. Flowering and vegetative period samples were analysed. Aqueous (hot and cold) and solvent extracts (acetone, chloroform and methanol) were screened. Among them chloroform extract was observed to recover bioactive principles with low MIC and MLC. MIC was $75\;{\mu}g$ in both seasons and MLC was $100\;{\mu}g$ for vegetative and $75\;{\mu}g$ for flowering periods respectively. Extracts from samples collected during flowering period was better than that of vegetative period.