Proceedings of the Korean Society of Crop Science Conference
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2017.06a
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pp.194-194
/
2017
Camelina (Camelina sativa L.) is a potential bio-energy crop that has short life cycle about 90 days and contains high amount of unsaturated fatty acid which is adequate to bio-diesel production. Enhancing environmental stress tolerance is a main issue to increase not only crop productivity but also big mass production. CsRCI2s (Rare Cold Inducible 2) are cold and salt stress related protein that localized at plasma membrane (PM) and assume to be membrane potential regulation factor. These proteins can be divide into C-terminal tail (CsRCI2D/E/F/G) or no-tail group (CsRCI2A/B/C/H). However, function of CsRCI2s are less understood. In this study, physiological responses and functional characterization of CsRCI2s of Camelina under salt stress were analyzed. Full-length CsRCI2s (A/B/E/F) and CsPIP2;1 sequences were confirmed from Camelina genome browser. Physiological investigations were carried out using one- or four-week-old Camelina under NaCl stress with dose and time dependent manner. Transcriptional changes of CsRCI2A/B/E/F and CsPIP2;1 were determined using qRT-PCR in one-week-old Camelina seedlings treated with NaCl. Translational changes of CsRCI2E and CsPIP2;1 were confirmed with western-blot using the antibodies. Water transport activity and membrane potential measurement were observed by cRNA injected Xenopus laevis oocyte. As results, root growth rate and physiological parameters such as stomatal conductance, chlorophyll fluorescence, and electrolyte leakage showed significant inhibition in 100 and 150 mM NaCl. Transcriptional level of CsPIP2;1 did not changed but CsRCI2s were significantly increased by NaCl concentration, however, no-tail type CsRCI2A and CsRCI2B increased earlier than tail type CsRCI2E and CsRCI2F. Translational changes of CsPIP2;1 was constitutively maintained under NaCl stress. But, accumulation of CsRCI2E significantly increased by NaCl stress. CsPIP2;1 and CsRCI2A/B/E/F co-expressed Xenopus laevis oocyte showed decreased water transport activity as 61.84, 60.30, 62.91 and 76.51 % at CsRCI2A, CsRCI2B, CsRCI2E and CsRCI2F co-expression when compare with single expression of CsPIP2;1, respectively. Moreover, oocyte membrane potential was significantly hyperpolarized by co-expression of CsRCI2s. However, higher hyperpolarized level was observed in tail-type CsRCI2E and CsRCI2F than others, especially, CsRCI2E showed highest level. It means transport of $Na^+$ ion into cell is negatively regulated by expression of CsRCI2s, and, function of C-terminal tail is might be related with $Na^+$ ion influx. In conclusion, accumulation of NaCl-induced CsRCI2 proteins are related with $Na^+$ ion exclusion and prevent water loss by CsPIP2;1 under NaCl stress.
This study aimed to examine the antioxidant, tyrosinase inhibitory, and anti-proliferative activities (A549, G361, HT-29, and MDA-MB-231) of fermented gochujang (made from sword bean cheonggukjang powder (SBC) for 90 days. Gochujang was prepared by adding 0 (SBC 0), 2 (SBC 2), 5 (SBC 5), 8 (SBC 8) and 10% (SBC 10) levels with SBC, and all experiments were measured at diluted levels of 20, 50 and 100 times. The antioxidant activity and tyrosinase inhibitory effect demonstrated that SBC 10 increased approximately 1.2 and 1.1 times compared with SBC 0, respectively, at diluted levels of 50 and 100 times. The anti-proliferative effects of A549, G361, and HT-29 presented that SBC 10 were 2.8, 1.1, and 8.9 times higher compared with SBC 0, respectively, at diluted levels of 50, 20, and 100 times. In the case of MDA-MB-231, SBC 10 was 3.7 times higher compared with SBC 5 at diluted level of 20 times. As a result, we confirmed that SBC gochujang was improved for physiological activities and anti-proliferative effects.
The objective of this study was to determine the effect of heat shock treatments on the phytochemicals including antioxidants and anticancer materials in kale (Brassica oleracea L. var. acephala) sprouts. In study I, kale sprouts grown under the growing system for four days were soaked at 40, 50, or $60^{\circ}C$ distilled water for 10, 30, or 60 seconds, and in study II, kale sprouts were soaked at $50^{\circ}C$ distilled water for 10, 20, 30, 45, or 60 seconds. After the heat shock treatments, the sprouts were transferred into normal growing conditions and recovered there for two days. Fresh and dry weights, electrolyte leakage, total phenolic concentration, antioxidant capacity, total flavonoid concentration, phenylalanine ammonia-lyase (PAL) activity, and glucosinolates content of the sprouts were measured before and after the heat shock treatments. As a result, there was a significant decrease in the fresh and dry weight of kale sprouts treated with heat shock compared with control at harvest in study I. Especially, heat shock at $60^{\circ}C$ lead to more pronounced growth inhibition compared with heat treatments at 40 and $50^{\circ}C$. Electrolyte leakage by cell collapse was the highest in the sprouts exposed to $60^{\circ}C$ distilled water, which agreed with the growth results. Heat shock at $50^{\circ}C$ significantly induced the accumulation of phenolic compounds. In study II, fresh weight of kale sprouts at $50^{\circ}C$ heat shock showed a significant decrease compared with the control at one and two days after the treatment. However, the decrease was minimal and dry weight of kale sprouts was not significantly different from that in control. In contrast, the heat shock-treated kale sprouts had higher level of total phenolic concentration than control at harvest. Heat shock treatments at $50^{\circ}C$ for 20 seconds or more showed at least 1.5 and 1.2 times higher total phenolic concentration and antioxidants capacity than control, respectively. The change of the total flavonoid concentration was similar with that of antioxidants. PAL activity after 24 hours of heat shock was higher in all the heat shock-treated sprouts than that in control suggesting heat shock may stimulate secondary metabolic pathway in kale sprouts. Seven glucosinolates were identified in kale sprouts and soaking the sprouts with $50^{\circ}C$ water for 20 seconds had a pronounced impact on the accumulation of total glucosinolates as well as two major glucosinolates, progoitrin and sinigrin, at harvest. In conclusion, this study suggests that heat shock using hot water would be a potential strategy to improve nutritional quality of kale sprouts by inducing the accumulation of phytochemicals with antioxidant and anticancer properties.
Journal of the Korean Society of Food Science and Nutrition
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v.45
no.8
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pp.1090-1098
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2016
The anti-inflammatory effects of ethanol extract from Grateloupia crispata (GCEE) were investigated in lipopolysaccharide (LPS)-stimulated murine macrophages. Anti-inflammatory effects were detected by enzyme-linked immunosorbent assay, Western blotting, and immunohistochemistry. There was no cytotoxic effect on proliferation of macrophages treated with GCEE compared to the control. GCEE significantly inhibited production of pro-inflammatory cytokines [interleukin (IL)-6, tumor necrosis $factor-{\alpha}$, and $IL-1{\beta}$] as well as nitric oxide in LPS-stimulated RAW 264.7 cells. In addition, GCEE suppressed expression of inducible nitric oxide synthase, cyclooxygenase-2, and nuclear $factor-{\kappa}B$ in a dose-dependent manner. GCEE significantly reduced activation of mitogen-activated protein kinases. In the in vivo test, evaluation of anti-inflammatory activity of GCEE was performed using croton oil-induced ear edema in ICR mice. Oral administration of 10 mg/kg to 250 mg/kg of GCEE significantly reduced ear edema in a dose-dependent manner compared to croton oil-induced mice. Moreover, GCEE reduced ear thickness and the number of mast cells compared to croton oil-induced mice in the histological analysis. These data suggest that GCEE could be used as a potential source for anti-inflammatory agents.
Journal of the Korean Society of Food Science and Nutrition
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v.41
no.8
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pp.1041-1048
/
2012
Shiitake mushroom (SM; Lentinus edodes) are cultivated and consumed in many Asian countries including Vietnam, China, Japan, Korea, and Thailand. In Asia, SM are mainly dried and used as flavoring. The aim of this study was to compare the effects of SM created with different drying processes, such as oven-dried and sun-dried, on the antioxidative and antigenotoxic effects. Raw and dried SM were extracted with acetone, ethanol, methanol, and hot water. The antioxidant effects of SM were evaluated by determining total phenolic content, DPPH radical scavenging activity (RSA), an ORAC assay, and a cellular antioxidant capacity (CAC) assay. The inhibitory effect of SM on oxidative stress-induced DNA damage in human leukocytes was evaluated by a Comet assay. The total phenolic content of raw SM extracted with methanol and of that extracted with water were significantly higher than the dried SM. Among the water extracts, the $IC_{50}$ for DPPH RSA of raw and sun-dried SM were significantly higher than that of oven-dried SM. Sun-dried SM showed the most potent ORAC value at 50 g/mL. The CAC against $AAPH^-$ induced oxidative stress in HepG2 cells, and $H_2O_2$ induced DNA damage were effectively protected against by all SM extracts. These results suggest that unprocessed SM are the best antioxidants, and that the sun-dried method would be the best option to use in terms of antioxidant activity and the antigenotoxic effect.
Journal of the Korean Applied Science and Technology
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v.37
no.1
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pp.124-132
/
2020
The purpose of this study was to investigate the biological activities such as cytotoxicity and anti-inflammation using Manjakani (Quercus infectoria Olivier) extract. Manjakani was extracted from hot DW and 80% ethanol. Cell viability was assessed using MTT assay on RAW 264.7 cells. Also, anti-inflammatory activities were measured through changes in the levels of nitric oxide (NO), prostaglandin E2 (PGE2), leukotrien B4 (LTB4), pro-inflammatory cytokines (IL-1β, IL-6 and tumor necrosis factor (TNF)-α) and transcription factor on LPS-induced RAW264.7 cells. The results confirmed that significant cytotoxicity does not appear in the concentration range of 1, 5, and 10 ㎍/㎖ of both extracts of this study. The production of NO was slowed by approximately MDE 37.2% and MEE 43.7% at 10 ㎍/㎖ concentration. Also, level of PGE2 and LTB4 was decreased MDE 30.9%/MEE 43.7% and MDE 37.1%/MEE 43.7%. In the case of inflammatory cytokine was reduced to MDE 38.8%/MEE 50.8% for IL-1β, MDE 35.0%/MEE 44.2% for IL-6 and MDE 31.9%/MEE 36.6% for TNF-α at 10 ㎍/㎖ concentration. The mRNA expression of NF-κB, iNOS and COX-2 significantly decreased by MDE 44.0%/MEE 16.0%, MDE 44.0%/MEE 55.0% and MDE 45.0%/MEE 40.0%, respectively, following the 10 ㎍/mL sample treatment when compared to the control. Both extracts were effective in anti-inflammatory activity. In addition, both extracts showed efficient changes of production of NO, PGE2, LTB4, pro-inflammatory cytokines and transcription factor. But MEE was found to have a higher inhibitory effect than MDE. In other words, Manjakani was showed significant biological activities showing anti-inflammation without cytotoxicity. These results will be provided as fundamental data for further development of the new health food and therapeutics related to the results above.
In order to investigate anti-inflammatory, anti-allergic and anti-obesity activities of Samchulkunbi-tang (SCT; Shen zhu jian pi-tang) water and 70% ethanol (EtOH) extracts, in vitro inhibitory activities against nitric oxide (NO), prostaglandin $E_2$$PGE_2$), interleukin (IL)-6 and tumor necrosis factor (TNF)-${\alpha}$ production in lipopolysaccharide-stimulated RAW 264.7 cells, and macrophage-derived chemokine (MDC/CCL22) and regulated on activation of normal T-cell-expressed and -secreted (RANTES/CCL5) production in TNF-${\alpha}$/interferon-${\gamma}$-stimulated HaCaT and BEAS-2B cells as well as glycerol-3-phosphate dehydrogenase (GPDH) activity and leptin production in 3T3-L1 cells were determined. A HPLC was used for quantification of the seven marker components (albiflorin, paeoniflorin, liquiritin, naringin, hesperidin, poncirin and glycyrrhizin) of SCT water and 70% EtOH extracts. SCT showed inhibitory effects against MDC and RANTES production in HaCaT cells, as well as RANTES production in BEAS-2B cells. In addition, SCT reduced not only NO, $PGE_2$, IL-6 and TNF-${\alpha}$ production in RAW 264.7 cells, but also GPDH activity and leptin production in 3T3-L1 cells. Furthermore, the biological activities and the contents of six compounds (except paeoniflorin) were higher in 70% EtOH extract than water extract. These results suggest that SCT has anti-inflammatory, anti-allergic and anti-obesity activities. These efficacies of 70% EtOH extract are relatively higher than that of water extract.
Kwon, Bong Seok;Park, Seon Kyeong;Kim, Jong Min;Kang, Jin Yong;Park, Sang Hyun;Kang, Jeong Eun;Lee, Chang Jun;Park, Su Bin;Yoo, Seul Ki;Lee, Uk;Heo, Ho Jin
Korean Journal of Food Science and Technology
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v.50
no.2
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pp.216-224
/
2018
To evaluate physiological effect of Aralia elata, in vitro antioxidant activity and hepatic protective effects were investigated. Ethyl acetate fraction from Aralia elata (EFAE) had higher total phenolic content than other fractions (n-hexane, chloroform, and distilled water layers). EFAE also showed significantly greater radical scavenging activity against 2,2'-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) diammonium salt (ABTS) and 1,1-diphenyl-2-picrylhydrazyl (DPPH), than other fractions. Moreover, EFAE showed dose-dependent inhibitory effect of malondialdehyde (MDA). Hepatoprotective effects of EFAE against ethanol- and $H_2O_2$-induced oxidative stress and cytotoxicity in H4IIE and HepG2 hepatic cells were examined using 2',7'-dichlorofluorescein diacetate (DCF-DA) and 3-[4,5-dimethythiazol-2-yl]-2,5-diphenyl tetrazolium bromide (MTT) assay. The results showed that EFAE reduced cellular oxidative stress, and increased hepatic cell viability. In addition, EFAE inhibited ethanol-induced lipid accumulation in HepG2 cells. Finally, physiological substances of EFAE were analyzed using high performance liquid chromatography (HPLC), and the major bioactive compounds identified were 3,5-dicaffeoylquinic acid and chlorogenic acid.
It has been known that Linum usitatissimum and Perilla frutescens are dietary sources of possible chemopreventive compounds such as lignans and $\alpha$-linolenic acid. Here, we investigated and compared the inhibitory effects of methanol extracts from Linum usitatissimum and Perilla frutescens on mutagenicity using the Ames test, and growth of human cancer cells (AGS human gastric adenocarcinoma, HT-29 human colon cancer, Hep 3B hepatocellular carcinoma cells). In the Ames test system using Salmonella typhimurium TA100, aflatoxin $B_1$ ($AFB_1$)-induced mutagenicity was significantly inhibited by treatment with the methanol extract from either Linum usitatissimum or Perilla frutescens (p<0.05) in a dose dependent manner. As for N-methyl-N'-nitro-N-nitrosoguamidine (MNNG)-induced mutagenicity, the methanol extracts (5 mg/assay) from Linum usitatissimum and Perilla frutescens showed 63% and 78% inhibitory rates, respectively, indicating that Perilla frutescens possessed stronger antimutagenic activity than did Linum usitatissimum. Inhibitory effects of methanol extracts from Linum usitatissimum and Perilla frutescens on the growth of human cancer cells (AGS, HT-29 and Hep 3B) appeared to increase dose dependently, and the inhibition was more effective against AGS and HT-29 compared to Hep 3B cells. Our results suggested that the methanol extract from Perilla frutescens showed stronger antimutagenic activity than that from Linum usitatissimumas assayed by the Ames mutagenic test, whereas the methanol extract from Linum usitatissimum was more effective than its counterpart for growth inhibition of human cancer cells. It is concluded that intake of Linum usitatissimum and Perilla frutescens as sources of omega-3 fatty acids will be beneficial for preventing cancer.
Purpose: The aims of this study are to investigate the effect of the eradication of H. pylori on histological change of gastric mucosa in children with H. pylori gastritis and to determine whether the histological grading by the Sydney system is valuable in predicting the effect of treatment. Methods: 1) Histological scores by the Sydney system and the endoscopic characteristics were assessed before and at least four weeks after anti-H. pylori therapy in 42 children with H. pylori gastritis. 2) In 32 children treated with omeprazole, amoxicillin and clarithromycin (OAC), pretreatment histological scores and endoscopic findings were compared between the eradicated and the noneradicated to evaluate their predictive value for the successful eradication. Results: 1) In the eradicated (27 cases), nodular gastritis significantly decreased from 89% to 63% (p<0.05). There was an significant improvement in the mean activity score from 2.06 before treatment to 0.24 after treatment (p<0.01). The mean inflammatory score also improved from 2.61 before treatment to 1.89 after treatment (p<0.05). Lymphoid follicles significantly decreased from 48% to 15% (p<0.05). Epithelial damage improved in all 4 cases. But in the noneradicated (15 cases), there was no significant change in the frequency of nodular gastritis, the mean activity score, the mean inflammatory score and the frequency of the lymphoid follicles. 2) In 32 children treated with OAC, there was a tendency that the higher was the pretreatment score of the bacterial density, the lower was the eradication rate of H. pylori (p=0.072). Conclusion: The loss of the polymorphonuclear cell infiltration is the most prominent histological change after successful eradication. There may be negative correlation of the grade of the bacterial density with the success rate of the anti-H. pylori therapy.
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