This study was carried out to investigate the differences in malt quality between high-protein Korean malting barley and low-protein Korean malting barley. The average protein content of each area in the 1996 crops was as follows; The protein content of Doosan-29 from Jeon-Nam was 14.1% (d.b), that of Sacheon-6 from kyung-Nam was 13.4% (d.b) and that of Doosan-8 from Je-Ju was 12.8% (d.b). In the micro malting trial for high and low protein malting barley, the original protein level of the malting barley was not changed and decreased during germination days. The malt friability of high-protein malting barley was very low, but that of low-protein malting barley was high. The malt friability of high-protein malting barley was 44.5% and that of low-protein malting barley was 84.2%. In proportion to an increase of +1% (d.b) in barley protein, the fine grind extract of malt was decreased -0.86% (d.b). Economically, it was the most negative factor for high-protein Korean malting barley. The ${\beta}-glucan$ content of high-protein malting barley was higher than that of low-protein malting barley. Wort viscosity and malt color were increased and Kolbach index was decreased in high-protein malting barley. Free amino nitrogen and diastatic power for high-protein malting barley were higher than those of low-protein malting barley. They were the most positive factors for high-protein Korean malting barley.
Kim, Min Yeong;HwangBo, Hyun;Ji, Seon Yeong;Hong, Su-Hyun;Choi, Sung Hyun;Kim, Sung Ok;Park, Cheol;Choi, Yung Hyun
Journal of Life Science
/
v.29
no.4
/
pp.410-420
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2019
Citrus unshiu peel extracts possess a variety of beneficial effects, and studies on their anticancer activity have been reported. However, the exact mechanisms underlying this activity remain unclear. In the current study, the apoptotic effect of ethanol extract of C. unshiu peel (EECU) on human breast adenocarcinoma MDA-MB-231 cells and related mechanisms were investigated. The results showed that the survival rate of MDA-MB-231 cells treated with EECU was significantly inhibited in a concentration-dependent manner, which was associated with the induction of apoptosis. EECU-induced apoptosis was associated with the activation of caspase-8 and caspase-9, which initiate extrinsic and intrinsic apoptosis pathways, respectively, and caspase-3, a representative effect caspase. EECU suppressed the expression of the inhibitor of apoptosis family of proteins, leading to an increased Bax/Bcl-2 ratio and proteolytic degradation of poly (ADP-ribose) polymerase. EECU also enhanced the loss of the mitochondrial membrane potential and cytochrome c release from the mitochondria to the cytosol, along with truncation of Bid. In addition, EECU activated AMP-activated protein kinase (AMPK), and compound C, an AMPK inhibitor, significantly weakened EECU-induced apoptosis and cell viability reduction. Furthermore, EECU promoted the generation of reactive oxygen species (ROS), which acted as upstream signals for AMPK activation as pretreatment of cells, with the antioxidant N-acetyl cysteine reversing both EECU-induced AMPK activation and apoptosis. Collectively, these findings suggest that EECU inhibits MDA-MB-231 adenocarcinoma cell proliferation by activating intrinsic and extrinsic apoptotic pathways, which was mediated through ROS/AMPK-dependent pathways.
Park, Jin-Cheon;Nam, Hyeon-Hwa;Nan, Li;Choo, Byung-Kil
Korean Journal of Organic Agriculture
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v.26
no.4
/
pp.661-676
/
2018
Veronica persica (V. persica) is a perennial plant that is broadly distributed in Europe, Asia and so on. V. persica is used for pain about the lower abdomen and low back. The aim of this study was to investigate the anti-oxidant and anti-inflammatory effects of V. persica ethanol extract in LPS-induced RAW 264.7 cells. To evaluate the anti-oxidant activity, the DPPH and ABTS radical scavenging, total polyphenol and flavonoid contents, and reducing power activity were carried out. The DPPH and ABTS radical scavenging activity were evaluated as 72.0% and 73.0% at the concentrations of 200 and $500{\mu}g/mL$, respectively. Total polyphenol and flavonoid contents of V. persica extracts were measured as 65.22 mg/g and 43.82 mg/g at the concentration of 1 mg/mL. The reducing power activity measurement showed 53.0% activity at 1 mg/mL. The anti-inflammatory effects of the V. persica extract were evaluated in LPS induced RAW 264.7 cells. In the evaluation of cell viability by proliferation & cytotoxicity assay kit, the cytotoxicity of the extract was not confirmed at $0{\sim}800{\mu}g/mL$ concentration. And the V. persica significantly inhibited NO production in a concentration dependent manner. The inhibition effects of NO in cell medium of V. persica was over 80% at $800{\mu}g/mL$. The V. persica also suppressed the expression of iNOS, COX-2, and phosphorylation of $NF-{\kappa}B$ and $IkB-{\alpha}$ proteins. These results indicate that the V. persica has anti-oxidant and anti-inflammatory effects by modulating $NF-{\kappa}B$ signaling pathways and can be used as natural functional materials.
Jeong, Hyo Jin;Xuan, Song Hua;Song, Ba Reum;Lee, Sang Lae;Lee, Yun Ju;Park, Soo Nam
Applied Chemistry for Engineering
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v.29
no.6
/
pp.716-725
/
2018
In this study, antimicrobial and antioxidative activities of Perilla frutescens var. acuta were investigated with 50% ethanol and the ethyl acetate fraction and also the components were analyzed. The minimum inhibitory concentration (MIC) of the ethyl acetate fraction for both Staphylococcus aureus and Pseudomonas aeruginosa were $78{\mu}g/mL$, indicating high antimicrobial effects. The free radical scavenging activity ($FSC_{50}$) and the reactive oxygen species (ROS) scavenging activity ($OSC_{50}$) in $Fe^{3+}-EDTA/H_2O_2$ system values of the ethyl acetate fraction were $25.90{\mu}g/mL$ and $1.40{\mu}g/mL$, respectively. After the cell damage induced by $400mJ/cm^2$ UVB irradiation, the cytoprotective effect of the ethyl acetate fraction of P. frutescens var. acuta showed the concentration dependent manner ranging from 2.0 to $16.0{\mu}g/mL$. The intracellular ROS inhibitory activity in HaCaT cells decreased to 28.6% and 40.7% for the 50% ethanol extract and ethyl acetate fraction, respectively at the concentration of $32{\mu}g/mL$. Components of rosmarinic acid, luteolin, apigenin, caffeic acid and ethyl caffeate were identified in the ethyl acetate fraction. These results suggest that the extract and fraction of P. frutescens var. acuta may be applied to the field of cosmetics as a natural material that protects the skin from an external environment by having antimicrobial and antioxidative activities.
Kim, Hye Soo;Park, Min Jeong;Kim, Soo Jeong;Kim, Bu Kyung;Park, JunHo;Kim, DaeHyun;Cho, Soo Jeong
Journal of Life Science
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v.31
no.3
/
pp.330-337
/
2021
This study was conducted to investigate the potential of Stewartia koreana as oral healthcare materials. The antibacterial activity of ethanol extracts from leaves and branches of S. koreana against oral bacteria was confirmed. The leaf and branch extracts (1 mg/disc) showed antibacterial activity against P. gingivalis only among several tested oral bacteria. The leaf extracts showed higher antibacterial activity, with values similar to those of chlorhexidine, which was used as a positive control. The MIC of the leaf extract against P. gingivalis was 0.4 mg/ml and showed bacteriostatic action. The inhibitory effects of the extract on biofilm formation and on gene expression related to biofilm formation by P. gingivalis were determined by biofilm biomass staining, scanning electron microscopy (SEM), and qRT-PCR analysis. The biofilm production rate and cell growth of P. gingivalis in the cultures treated with 0.2-2.0 mg/ml of S. koreana leaf extracts were significantly decreased in a concentration-dependent manner. The inhibitory effect on the formation of P. gingivalis biofilms at concentrations of 1 mg/ml was confirmed by SEM. The qRT-PCR analysis showed concentration-dependent suppression of the fimA and fimB gene expression associated with fimbriae formation in the cultures treated with 0.2-2.0 mg/ml S. koreana leaf extract. These results support the conclusion that S. koreana leaf extracts can be used as oral healthcare materials derived from natural materials, as demonstrated by the antibacterial action and inhibition of biofilm formation of P. gingivalis.
Anti-angiogenic mechanism was examined for anti-obesity agents with the extract of P.radix, P.semen, S.hebra and C.furctus through anti-cell adhesion effect and western blot. Cell adhesion molecules, VCAM-1 was supressed with the order of P.radix (0.2 ppm, 125%) > P.semen (0.5 ppm, 100%) > S.hebra (5.0 ppm, 114%) > C. furctus (5.0 ppm, 111.8%), ICAM-1 was inhibited by P.radix (0.25 ppm, 130%) > P.semen (0.5 ppm, 100%) > S.hebra (5.0 ppm, 138%) > C. furctus (5.0 ppm, 66.7%), E-Selectin was also supressed P.radix (0.25 ppm, 100%) > P.semen (1.0 ppm, 128%) > S.hebra (5.0 ppm, 120%) > C. furctus (5.0 ppm, 100.7%). And signal molecules, VE-cadherin was supressed by P.radix and S.hebra, ${\beta}$-catenin was inhibited by P.radix, and Akt was supressed all these 4 kinds of natural products. These P.radix, P.semen, S.hebra and C.furctus were showed the possibility of anti-obesity agents based on anti-angiogenesis.
Han, Kook-Il;Kim, Mi ran;Jo, Bu Kyung;Kim, Min Ji;Kang, Min Joo;Park, Ki-hyoun;Koo, Ye eun;Kim, Byeongseong;Jung, Eui-Gil;Han, Man-Deuk
Journal of Life Science
/
v.25
no.4
/
pp.433-440
/
2015
Several studies suggest that regular consumption of walnuts may have beneficial effects against oxidative stress-mediated disease such as cancer. The present study reports the total phenolic and flavonoid contents, together with the antioxidant and antibacterial activities of several solvent extracts (methanol, n-hexane, ethyl acetate, n-butanol, and water) obtained from walnut (Juglans regia L.) green husk. MIC (minimal inhibitory concentration) values of the walnut extracts for 8 human pathogenic bacteria strain were determined using agar dilution method. Antioxidant activity of extracts were assessed using DPPH (1,1-diphenyl-2-picrylhydrazyl) and ABTS (2,2’-azino-bis-(3-ethylbenzothiazoline-6-sulphonic acid)) assays, EC50 of DPPH and ABTS scavenging activities, and determination of total phenolic and flavonoid content and its correlation with DPPH and ABTS scavenging capacities. Among the six extracts, ethyl acetate extract (EtOAc Ex) showed the highest antimicrobial activity at 3.2 mg/ml of MICs against Staphylococcus aureus SG511. Total flavonoids and polyphenol contents of EtOAc Ex were 42.48 mg of quercetin equivalents (QE)/g and 223.25 mg of gallic acid equivalents (GAE)/g respectively. The highest antioxidative potential was shown by the sample extracted with EtOAc Ex (EC50=13.43 μg/ml for DPPH and EC50=41.83 μg/ml for ABTS radical scavenging activity assay). These results showed that J. regia green husk extracts can be used as an easily accessible source of natural antibacterial agents and natural antioxidants.
Kim Og-Yim;Park Sun-Ill;Jung Ill-Min;Ha Sang-Young
Journal of Life Science
/
v.15
no.6
s.73
/
pp.871-878
/
2005
This experiment was performed to examine the allelopathy effect of allelochemical substance on the crop plants. According to the experiment of the allelochemical substances in Hypochaeris radicata by HPLC, there are the differences at each part of plants. However, it is ascertained that there are 14 kinds of phenolic compounds ingredients that are $\rho$-hydroxybenzoic acid, chlorogenic acid, catechin, caffeic acid, syringic acid, salicylic acid, $\rho$-coumaric acid, ferulic acid, naringin, hesperidin, myricetin, trans-cinnamic acid, quercetin and naringenin. The chemicals like caffeic acid, ferulic acid, and naringenin are commonly included. The result of the chemical experiment shows that there are the differences at each season and part of plants. The leaves in May and blossoms and roots in July contain lots of phenolic acids. It is very high contents such as salicylic acid 2085.6 ${\mu}g/g$ and quercetin 1522.0 ${\mu}g/g$, especially in roots of plants. The result on the growth of crop plants treated by the aqueous extract of Hypochaeris radicata shows that the value of the control group and the test group are same in some cases. However, because the treat value of test group is towel'than that of control group in all items of the experiment, it is cofirmed that the growth of crop plants was inhibited and that the inhibitory effect was increased as its density of treatment was increased. The result of change in quantity shows that there are the differences at each kind of crop plants, but the inhibitory effect was increased as its concentration of treatment was increase with entire. As results, it is confirmed that H. radicata has the allelopathy effect to the crop plants. Especially the inhibitory effect on growth is high in gramineous crop, italian ryegrass and leguminous crop. purple alfalfa.
Kwak, Chung Shil;Kim, Mi-Ju;Kim, Sun Gi;Park, Sunyeong;Kim, In Gyu;Kang, Heun Soo
Journal of Nutrition and Health
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v.52
no.6
/
pp.529-539
/
2019
Purpose: Sprouts of evening primrose (Oenothera laciniata, OL) were reported to have high contents of flavonoids and potent antioxidant activity. This study examined the antioxidant and antiobesity activities of OL sprouts to determine if they could be a natural health-beneficial resource preventing obesity and oxidative stress. Methods: OL sprouts were extracted with 50% ethanol, evaporated, and lyophilized (OLE). The in vitro antioxidant activity of OLE was examined using four different tests. The antiobesity activity and in vivo antioxidant activity from OLE consumption were examined using high fat diet-induced obese (DIO) C57BL/6 mice. Results: The IC50 for the 2,2-diphenyl-1-picryl-hydrazyl (DPPH) radical scavenging and superoxide dismutase (SOD)-like activities of OLE were 26.2 ㎍/mL and 327.6 ㎍/mL, respectively. OLE exhibited the ferric reducing antioxidant power (FRAP) activity of 56.7 ㎍ ascorbic acid eq./mL at 100 ㎍/mL, and an increased glutathione level by 65.1% at 200 ㎍/mL compared to the control in the hUC-MSC stem cells. In an animal study, oral treatment with 50 mg or 100 mg of OLE/kg body weight for 14 weeks reduced the body weight gain, visceral fat content, fat cell size, blood leptin, and triglyceride levels, as well as the atherogenic index compared to the high fat diet control group (HFC) (p < 0.05). The blood malondialdehyde (MDA) level and the catalase and SOD-1 activities in adipose tissue were reduced significantly by the OLE treatment compared to HFC as well (p < 0.05). In epididymal adipose tissue, the OLE treatment reduced the mRNA expression of leptin, PPAR-γ and FAS significantly (p < 0.05) compared to HFC while it increased adiponectin expression (p < 0.05). Conclusion: OLE consumption has potent antioxidant and antiobesity activities via the suppression of oxidative stress and lipogenesis in DIO mice. Therefore, OLE could be a good candidate as a natural resource to develop functional food products that prevent obesity and oxidative stress.
Journal of the Korean Applied Science and Technology
/
v.35
no.4
/
pp.1003-1012
/
2018
This study is for checking the possibility of Lentinula edodes as cosmetic materials. For this we carried out biological active evaluation about anti-oxidant and anti-inflammatory effects by Lentinula edodes extracts. We extracted Lentinula edodes with water and 70% ethanol and then in order to evaluate anti-oxidant activity we treated samples by concentrations (100, 500, 1000) ${\mu}g/ml$ and carried out 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging, the activity of 2,2'-azino-bis ( 3-ethylbenzothiazoline-6-sulphonic acid )-diammonium salt (ABTS) cation radical scavenging and superoxide dismutase(SOD) like activity. Also, in order to evaluate effect of anti-inflammatory the samples in macrophages(RAW 264.7 cells), we carried out evaluation of cell viability, nitric oxide inhibitory activity western blot. The results of DPPH, $ABTS^+$ radical scavenging activity and SOD-like activity of the Lentinula edodes extracts increased in dose-dependent manner. The cytotoxic of samples by MTT assay showed no toxicity at the concentrations of 10, 25 and $50{\mu}g/ml$ of Lentinula edodes extract. Nitric oxide inhibition activity results showed that the extracts reduced NO productions in a concentration-dependent manner. Expression of inflammatory cytokines as $TNF-{\alpha}$, $PGE_2$ and $IL-1{\beta}$ decreased in a concentration-dependent manner and iNOS and COX-2 proteins expression rates were decreased significantly in western blot analysis. From the results of the experiment, it was comfirmed that the Lentinula edodes extracts had excellent anti-oxidant and anti-inflammatory effect and could be used as a safe natural cosmetic material in the future.
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