• Journal of Plant Biotechnology
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• 제49권2호
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• pp.155-161
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• 2022

본 연구는 복분자 종자 에탄올 추출물의 항산화 및 항염증 활성 검증하였다. 항산화 활성을 알아보기 위하여 총 폴리페놀 및 플라보노이드 함량, ABTS 및 DPPH 라디칼 소거능과 환원력을 측정하였다. 복분자 종자 에탄올 추출물의 총 폴리페놀 및 플라보노이드 함량은 각각 4.09 ㎍ GAE/mg와 16.25 ㎍ QE/mg이었다. DPPH와 ABTS 라디칼 소거능은 농도 의존적 소거능을 보였고, 복분자 종자 에탄올 추출물의 RC50 값은 각각 26.68, 39.30 ㎍/mL이였다. 게다가 환원력을 평가하기 위해 수행된 FRAP 분석에서 복분자 종자 추출물은 0.61 ± 0.01 mM FeSO₄ E/mg의 효능을 보여주었다. 항염증 효과를 측정하기 위해 RAW 264.7 세포에서 세포독성과 산화질소(NO) 생성 억제 효능을 확인하였다. 확인 결과 500 ㎍/mL의 복분자 종자 추출물에서 세포 독성 없이 산화질소 생성 억제 효능을 확인할 수 있었다. 복분자 종자 추출물을 사용한 항산화 및 항염증 활성을 확인한 결과 항산화 및 항염증 물질로서의 가능성을 확인할 수 있었다.

• Journal of Plant Biotechnology
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• 제49권1호
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• pp.99-105
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• 2022

This study assessed the antioxidant and anti-inflammatory activities of leaf extracts from grain amaranths (Amaranthus spp.). Among all the extracts, the ethanol extract of Amaranthus cruentus leaves (Ar) exhibited the highest antioxidant activity, including the DPPH free radical scavenging activity and ORAC. In addition, Ar strongly inhibited nitric oxide production by suppressing the MEK/ERK signaling pathway in lipopolysaccharide-stimulated RAW264 murine macrophages. HPLC analysis revealed 13 polyphenolic compounds in the leaf extracts of grain amaranth and indicated that Ar contained more rutin than the other extracts. Taken together, these results show the impact of species diversity on the phytochemical contents and bioactivities of plant extracts and suggest that the nonedible parts, such as leaves, of A. cruentus should be considered for use as crude drugs and dietary health supplements.

• 한국축산식품학회지
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• 제39권1호
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• pp.162-176
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• 2019

This study was performed to evaluate the antioxidant activity of yogurt fermented at low temperature and the anti-inflammatory effect it has on induced colitis with 2.5% dextran sodium sulfate (DSS) in Balb/c mice. Yogurt premix were fermented with a commercial starter culture containing Lactobacillus acidophilus, Bifidobacterium lactis, Streptococcus thermophilus, and Lactobacillus delbrueckii subsp. bulgaricus at different temperatures: $22^{\circ}C$ (low fermentation temperature) for 27 h and $37^{\circ}C$ (general fermentation temperature) for 12 h. To measure antioxidant activity of yogurt samples, DPPH, $ABTS^+$ and ferric reducing antioxidant potential (FRAP) assays were conducted. For animal experiments, inflammation was induced with 2.5% DSS in Balb/c mice. Yogurt fermented at low temperature showed higher antioxidant activity than that of the yogurt fermented at general temperature. In the inflammatory study, IL-6 (interleukin 6) was decreased and IL-4 and IL-10 increased significantly in DSS group with yogurt fermented at general temperature (DYG) and that with yogurt fermented at low temperature (DYL) compared to that in DSS-induced colitic mice (DC), especially DYL had higher concentration of cytokines IL-4, and IL-10 than DYG. MPO (myeloperoxidase) tended to decrease more in treatments with yogurt than DC. Additionally, yogurt fermented at low temperature had anti-inflammatory activity, although there was no significant difference with general temperature-fermented yogurt (p>0.05).

• 동의생리병리학회지
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• 제35권6호
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• pp.228-234
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• 2021

Hwangryunhaedoktang is one of the prescriptions used in traditional medicine for skin diseases. In this study, Hwangryunhaedoktang-Gamibang (HG) was fermented with Lactiplantibacillus plantarum, a probiotic lactic acid bacterium, to evaluate its potential as a functional cosmetic composition. Strains with anti-inflammatory activity were selected by isolating lactic acid bacteria from kimchi, a traditional Korean fermented food. HG was inoculated with lactic acid bacteria and the viability was measured. The supernatant was obtained by centrifugation of fermented Hwangryunhaedoktang-Gamibang (HGF) and HG, and the filtered supernatant was freeze-dried and used in the experiment. By measuring DPPH and ABTS scavenging activity, it was confirmed that the antioxidant activity was increased. RAW264.7 cells were inoculated with HG and HGF to confirm anti-inflammatory activity through NO assay, and production levels of pro-inflammatory cytokines (IL-1β, IL-6, and TNF-α) were measured through ELISA assay. It was confirmed that HGF had a greater decrease in production than HG. Through lactobacilli fermentation, the beneficial probiotic properties and antioxidant and pro-inflammatory activities of lactic acid bacteria suggest potential clinical or technical applications.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2019년도 추계학술대회
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• pp.79-79
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• 2019

The aim of the study was to determine the antioxidant activities of the plants with origin of Vietnam. The Manglietia insignis (Wall.) Blume, which is a species of plant in the family Magnoliaceae and Tirpitzia sinensis (Hemsl.) Hallier f., which is a species of plant in the family Linaceae were tested for antioxidant activities. Samples were prepared using 95% ethanol using Nitric Oxide (NO) assay for assessing the anti-inflammatory activity. NO assay experiment showed that extracts of the Manglietia insignis (Wall.) Blume and Tirpitzia sinensis (Hemsl.) Hallier f. might have the 36.2% more anti-inflammatory activity and 59.5% more anti-inflammatory activity, respectively, compared to control. To determine the cell toxicity, MTT (3-(4,5-dimethylthiazol-2-yl) -2,5-diphenyltetrazolium bromide) assay was used. MTT assay experiment showed that the Manglietia insignis (Wall.) Blume and Tirpitzia sinensis (Hemsl.) Hallier f. might have the 31.0% less toxicity and 8.52% more toxicity, respectively, compared control. Taken together, these experiments showed that Manglietia insignis (Wall.) Blume extracts might have significantly higher anti-inflammatory activities and relatively lower toxicity, compared to control.

• 한국버섯학회지
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• 제22권1호
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• pp.1-7
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• 2024

Mushrooms play crucial roles as reservoirs of naturally occurring bioactive compounds. Among these, Cordyceps militaris is significant because of its well-established reputation for organoleptic excellence and positive health effects, which have led to its widespread commercialization. In contrast, the key properties of Paecilomyces variotii, an ectomycorrhizal symbiont, has received limited attention. In alignment with current research trends, the study of the mycelia and culture media of these mushrooms hold promise in identifying potential sources of valuable bioactive compounds. In the present study, we investigated C. militaris and P. variotii for their phenolic acids and sterols, assessing antioxidant capacity, anti-inflammatory effects, and anti-proliferative activity. Interestingly, P. variotii mycelia exhibited higher concentrations of ergosterol and phenolic compounds, with comparable levels observed in the fruiting bodies, along with superior antioxidant activity compared to that of C. militaris. In contrast, C. militaris mycelia demonstrated anti-inflammatory effects (which were absent in P. variotii mycelia) and cytotoxicity comparable to, and at times exceeding, that of its fruiting bodies (in contrast to P. variotii). In addition, the species analyzed in this study displayed variations in growth rates and mycelial production, which merit consideration for potential future applications and further study.

• Preventive Nutrition and Food Science
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• 제16권3호
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• pp.236-241
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• 2011

Allium victorialis L. (A. victorialis) is a very popular vegetable in Korea. The most commonly used parts of this vegetable are the bulbs and young leaves. To determine if the mature leaves have any beneficial properties, we investigated antioxidant, anti-${\alpha}$-glucosidase, anti-inflammatory, and anticancer activities of water and ethanol extracts from A. victorialis. Antioxidant activity was evaluated by measuring total phenolic content, DPPH and superoxide radicals scavenging activities. The water extract from A. victorialis ($W{\cdot}A$. victorialis) exhibited higher antioxidant ability than the ethanol extract ($E{\cdot}A$. victorialis). Moreover, the water extract showed strong inhibitory effect on ${\alpha}$-glucosidase. On the other hand, the ethanol extract had greater anti-inflammatory activity on murine macrophage cells (RAW 264.7) and greater anticancer activities against human colon cancer cells (HT-29). These results suggest that mature leaves from E·A. victorialis may have health-enhancing effects.

• Journal of Microbiology and Biotechnology
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• 제26권8호
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• pp.1367-1374
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• 2016

The present study evaluated the total phenolic and flavonoid contents as well as total antioxidant capacity (TAC) of three cultivars of Actinidia arguta Planch. kiwi berries; cv. Mansoo (Mansoo), cv. Chiak (Chiak), and cv. Haeyeon (Haeyeon). In addition, the anti-inflammatory effects of the three cultivars of kiwi berries were investigated using a lipopolysaccharide (LPS)-stimulated RAW 264.7 murine macrophage cell line. Mansoo had the highest total phenolic content and TAC among the three cultivars, whereas Chiak had the highest total flavonoid content. The total antioxidant capacities of the kiwi berry extracts were more strongly correlated with total phenolic content than with total flavonoid content. The kiwi berry extracts suppressed the secretion of pro-inflammatory cytokines, including interleukin-6 and tumor necrosis factor-α, from LPS-stimulated RAW 264.7 cells. The release of nitrite, an indirect indicator of nitric oxide, was also ameliorated by pre-treatment with the kiwi berry extracts in a dose-dependent manner. Cellular-based measurements of antioxidant capacity exhibited that the kiwi berry extracts had cellular antioxidant capacities. Such cellular antioxidant effects are possibly attributed to their direct antioxidant capacity or to the inhibition of reactive oxygen species generation via anti-inflammatory effects. Our findings suggest that kiwi berries are potential antioxidant and anti-inflammatory agents.

• The Korean Journal of Physiology and Pharmacology
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• 제11권1호
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• pp.9-13
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• 2007

Antioxidant properties have been proposed as a mechanism for the putative anti-inflammatory effects of phenolic compounds. To reveal the relationship between antioxidant activity and anti-inflammatory effects of various antioxidants, we measured 1, 1-diphenyl-2-picryhydrazyl(DPPH)-reducing activity and examined the inhibitory effects on LPS-induced inflammation-related gene expression in the BV2 microglial cell line. Lipopolysaccharide(LPS)(0.2 ${\mu}g/ml$) was used with or without antioxidants to treat cells, and the regulation of iNOS and cytokine gene expression was monitored using an RNase protection assay(RPA). Although, all tested antioxidants had similar DPPH-reducing activity and inhibited nitrite production, but the curcuminoid antioxidants(ferulic acid, caffeic acid, and curcumin) inhibited LPS-induced gene expression(iNOS, $TNF-\alpha,\;IL-1{\beta}$, IL-6, and IL-1 Ra) in a concentration-dependent manner. Other tested antioxidants did not exhibit the same effects; N-acetylcysteine(NAC) only began to suppress $IL-1{\beta}$ gene expression just below the concentration at which cytotoxicity occurred. Moreover, the antioxidant potency of curcuminoids appeared to have no correlation with anti-inflammatory potency. Only curcumin could inhibit LPS-induced microglial activation at a micromolar level. These data suggest that curcumin may be a safe antioxidant possessing anti-inflammatory activity.

• 한국식품영양과학회지
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• 제43권12호
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• pp.1808-1816
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• 2014

본 연구는 삼채의 뿌리와 잎을 물과 주정을 이용하여 추출하여 항산화 활성 및 항염증 효과를 비교 평가하였다. 삼채의 추출물에 포함된 총 폴리페놀 함량과 전자스핀공명기기를 이용한 DPPH, alkyl, hydroxyl 라디칼 소거능, ABTS를 이용한 라디칼 소거 활성 및 FRAP 및 ORAC을 이용한 항산화 활성을 평가하였는데, 삼채뿌리 추출물보다는 삼채잎 추출물의 항산화 활성이 높았으며 이는 잎에 포함된 총 폴리페놀 함량과 관련이 있을 것으로 판단된다. 물 추출의 경우가 뿌리와 잎 모두 수율이 높았으며 폴리페놀 함량과 ORAC value와 alkyl 라디칼 소거 활성은 비슷한 경향을 나타내었으나 DPPH와 hydroxyl 라디칼 소거 활성과는 다른 결과를 나타내었다. 또한 간세포를 이용한 세포 독성 평가 실험 수행 결과, 0.25 mg/mL의 농도까지는 삼채의 뿌리와 잎의 물 추출물 및 주정 추출물 모두 독성을 나타내지 않았다. RAW264.7 세포를 이용하여 독성을 나타내지 않는 농도인 0.2 mg/mL 이하에서 항염증 활성 평가를 수행한 결과 삼채뿌리 및 삼채잎의 물과 주정 추출물은 모두 NO의 생성을 농도 의존적으로 감소시키는 경향을 나타내었다. 뿐만 아니라 삼채 추출물은 염증성 사이토카인인 IL-6와 TNF-${\alpha}$의 생성을 감소시켰으며, 특히 삼채뿌리 물 추출물은 가장 높은 IL-6와 TNF-${\alpha}$의 생성 억제를 나타내었다. 또한 삼채 추출물이 LPS로 유도한 세포내 활성산소종을 농도 의존적으로 억제하는 것을 확인하였으며, 위의 결과로 삼채잎 추출물은 항산화 활성이 우수하고 삼채뿌리 추출물은 항염증 활성이 높음을 확인하였다. 따라서 삼채 추출물이 우수한 항산화 및 항염증 활성을 가지고 있는 것으로 판단되며, 이와 관련된 항산화 및 항염증 생리활성 물질에 관한 추가적인 연구가 필요할 것으로 사료된다.