Journal of the Korean Society of Food Science and Nutrition
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v.36
no.8
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pp.1055-1061
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2007
Caesalpinia sappan L. is an indeciduous tree distributed in China, India, Miyanmar and Vietnam. Its heartwood has long been used in oriental folk medicines to treat diseases. In this study, antioxidative activities of Caesalpinia sappan L. and the effect of gamma irradiation on its chemical and biological properties were investigated. The ethyl acetate fraction (EtOAc fr.) of Caesalpinia sappan L. was irradiated with 100 kGy of gamma ray. The dark red color of EtOAc fr. was significantly (p<0.05) removed by irradiation (Hunter L and b values increased and a value decreased). The total phenolic content of EtOAc fr. was 865 mg/g and it was increased to 1195 mg/g by gamma irradiation. DPPH radical and superoxide anion radical scavenging activities and lipid peroxidation inhibitory activity of EtOAc fr. were very high and its activities were also increased by gamma irradiation. EtOAc fr. also inhibited the irradiation-induced DNA damage of lymphocyte as determined by comet assay. In conclusion, EtOAc fr. of Caesalpinia sappan L. extract showed high antioxidative activities in vitro. Furthermore, gamma irradiation on EtOAc fr. ameliorated the color and antioxidative properties. Therefore, it can be suggested that Caesalpinia sappan L. may be a good material for antioxidant function and gamma irradiation may be applied for the improvement of chemical and biological properties of Caesalpinia sappan L.
Kim, Min Soo;Oh, In Taek;Jun, Do Youn;Lee, Ji Young;Sohn, Ho-Yong;Kwak, Do Yeon;Seo, Myung Chul;Woo, Koan Sik;Ko, Jee Yeon;Jung, Tae Wook;Nam, Min Hee;Woo, Mi Hee;Kim, Young Ho
Journal of Life Science
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v.23
no.12
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pp.1460-1470
/
2013
To examine whether miscellaneous cereal grains have an antithrombotic effect, we investigated the anticoagulant activity of 80% ethanol extracts from eleven selected miscellaneous cereal grains. The 80% ethanol extract of hwanggeumchal sorghum (Sorghum bicolor) showed the highest anticoagulant activity, followed by that of green foxtail millet grains, in terms of thrombin time (TT). When the ethanol extract of hwanggeumchal sorghum was sequentially fractionated with n-hexane, methylene chloride, ethyl acetate, and n-butanol, the majority of the TT-inhibitory activity was detected in the hexane and methylene chloride fractions. Whereas aspirin (final conc. 480 ${\mu}g/ml$) prolonged TT by 2-fold, the ethanol extract, hexane fraction, and methylene chloride fraction in the same dose prolonged TT by 2.2-fold, 2.9-fold, and 2.5-fold, respectively. The ethanol extract of hwanggeumchal sorghum could delay activated partial thromboplastin time (APTT) as well as prothrombin time (PT). Although the APTT-inhibitory activity of the ethanol extract was mainly partitioned into the hexane and methylene chloride fractions, the PT-inhibitory activity of the ethanol extract was solely partitioned into the hexane fraction. The APTT- and PT-inhibitory activities of these organic solvent fractions were more potent than those of the control warfarin (final conc. 3.13 mg/ml). The TT-inhibitory activity of the ethanol extract was heat-stable and acid-stable. The ethanol extract, hexane fraction, and methylene chloride fraction of hwanggeumchal sorghum appeared to possess a direct fibrinolytic activity toward fibrin clotting. These results show that hwanggeumchal sorghum can exert anticoagulant and fibrinolytic effects and, thus, have the potential to be applicable as antithrombotic dietary sources.
The biological effects of the iminoctadine tris (albesilate) and kresoxim-methyl for the protection of citrus postharvest diseases caused by penicillium spp. were assayed. In vitro tests, $EC_{50}$ values of iminoctadine tris(albesilate) were $0.01{\sim}0.02\;and\;0.01{\mu}g$ a.i./mL against mycelial growth of P. italicum and P. digitatum, respectively, but iminoctadine tris(albesilate) at $0.64{\mu}g$ a.i. /mL inhibited a little mycelial growth of unknown Penicillium sp. which produced another symptom different to blue and green mold caused by P. italicum and P. digitatum, respectively. And against germination and growth of germ tube of P. italicum and P. digitatum, $EC_{50}$ value of iminoctadine tris(albesilate) was $0.0013{\sim}0.0025{\mu}g$ a.i./mL. But spore germination of unknown Penicillium spp. was not nearly inhibited at $0.2{\mu}g$ a.i./mL. $EC_{50}$ values of kresoxim-methyl were $0.08{\sim}0.16$, 0.04 and $0.16{\mu}g$ a.i./mL against mycelial growth of P. italicum, P. digitatum and unknown Penicillium sp., respectively, and $0.04{\sim}0.08{\mu}g$ a.i./mL and $0.01{\sim}0.02{\mu}g$ a.i./mL against germination and growth of germ tube of P. italicum and unknown Penicillium sp., and P. digitatum, respectively. Iminoctadine tris(albesilate) and kresoxim-methyl were markedly effective to control the postharvest disease by 7 days spray prior to harvest. When the fruits were sprayed with iminoctadine-tris(albesilate) ($200{\mu}g$ a.i./mL) and kresoxim-methyl ($155{\mu}g$ a.i./mL) 7 days prior to harvest and subsequently stored for 90 days, the percentage of diseased fruit by Penicillium spp. was $3.6{\pm}1.8%$ in treatment of kresoxim-methyl and $5.9{\pm}1.8%$ in iminoctadine-tris(albesilate), respectively. On the other hand, tile percentage of diseased fruit was relatively high, $20.3{\pm}10.0%\;and\;19.5{\pm}9.6%$ in thiophanate-methyl ($700{\mu}g$ a.i./mL) and non-treatment, respectively. Maximum residue amount (ppm) among fruits (flesh and peel) assayed 0, 30, 60 and 90 days after storage was 0.45 and 0.10 ppm in treatment of kresoxim-methyl and iminoctadine, respectively.
Among the naturally occurring antioxidants, polyphenols are widely distributed in various fruits, vegetables, wines, juices, and plant-based dietary sources and divided into several subclasses that included phenolic acid, flavonoids, stilbenes, and lignans. As part of our continuing search for bioactive food ingredients, the antioxidant and ${\alpha}$-glucosidase inhibitory activities of the aqueous ethanolic extract from the aerial parts of Ainsliaea acerifolia were investigated in vitro. The antioxidant properties were evaluated via radical scavenging assays using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) ($ABTS^+$) radicals. In addition, the anti-diabetic effect of A. acerifolia extracts was tested via ${\alpha}$-glucosidase inhibitory assay. Furthermore, the total phenolic contents were determined using a spectrophotometric method. All the tested samples showed dose-dependent radical scavenging and ${\alpha}$-glucosidase inhibitory activities. In particularly, the ${\alpha}$-glucosidase inhibitory and radical scavenging properties of the ethyl acetate (EtOAc)-soluble portion from the aerial parts of the A. acerifolia were higher than those of the other solvent-soluble portions. These results suggest that A. acerifolia could be considered a new potential source of natural antioxidants and antidiabetic ingredients. More systematic investigation of the aerial parts of A. acerifolia will be performed for the further development of anti-oxidative and antidiabetic drugs.
Agaricus brasiliensis, one of edible mushroom belonging to Basidiomycota, has been used for curing gastric ulcer and stomach cancer of human beings and also known to have good inhibitory effects on sarcoma 180 and Ehrlich carcinoma of mice. Neutral saline soluble (0.9% NaCl), hot water soluble and methanol soluble substances (hereinafter referred to Fr. NaCl, Fr. HW and Fr. MeOH, respectively) were prepared from fruiting body of the mushroom. ${\beta}$-glucan and total protein contents were identify from fractions of edible mushrooms extract. The ${\beta}$-glucan and protein contents of all fractions of the mushrooms ranged from 21.54~32.31% and 0.16~9.34%, respectively. In vitro cytotoxicity tests, crude polysaccharides were not cytotoxic against cancer cell lines such as Sarcoma 180, HT-29, NIH3T3 and RAW 264.7 at the concentration of 10~2000 ${\mu}g/ml$. Intraperitoneal injection with crude polysaccharides exhibited life prolongation effect of 18.8~50.6% in mice previously inoculated with Sarcoma 180. Fr. HW increased the numbers of spleen cell by 1.2 fold at the concentration of 200 ${\mu}g/ml$ compared with control. Fr. MeOH and Na improved the immuno-potentiating activity of B lymphocyte by increasing the alkaline phosphatase activity by 1.6 fold compared with control at the concentration of 50~500 ${\mu}g/ml$. Fr. Na generated 15.9 ${\mu}M$ of nitric oxide (NO) when cultured with RAW 264.7 at the concentration of 200 ${\mu}g/ml$, while lipopolysaccharide, a positive control, produced 3.7 ${\mu}M$. The Fr. NaCl, Fr. HW and Fr. MeOH increased the secretion of TNF-${\alpha}$, IL-$1{\beta}$, Il-2 and IL-6 by 2.2 times compared with the control group. Fr. Na increased the numbers of peritoneal exudate cells by 4 folds at the concentration of 50mg/kg compared with control. Circulating leukocytes increased by 2.7 folds when Fr. HW from A. brasiliensis was inoculated at the concentration of 50 mg/kg body weight. The hematological and blood chemical analysis of the 3 fractions did not show any difference in blood compositions and enzyme activities compared with the control group (p<0.05). Therefore, the experimental results suggested that crude polysaccharides extracted from A. brasiliensis contain antitumor and immuno-potentiating activities against Sarcoma 180 in ICR mice.
Kim, Min-Su;Jeong, Chang-Mo;Jeon, Young-Chan;Ryu, Jae-Jun;Huh, Jung-Bo;Yun, Mi-Jung
The Journal of Korean Academy of Prosthodontics
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v.49
no.3
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pp.245-253
/
2011
Purpose: The aim of this in vitro study was to estimate surface characteristic after peptide coating and investigate biological response of human mesenchymal stem cell to anodized titanium discs coated with RGD peptide by physical adhesion and chemical fixation. Materials and methods: Fluorescence isothiocyanate (FITC) modified RGD-peptide was coated on the anodized titanium discs (diameter 12 mm, height 3 mm) using two methods. One was physical adhesion method and the other was chemical fixation method. Physical adhesion was performed by dip and dry procedure, chemical fixation was performed by covalent bond via silanization. In this study, human mesenchymal stem cell was used for experiments. The experiments consisted of surface characteristic evaluation after peptide coating, analysis about cell adhesion, proliferation, differentiation, and mineralization. Obtained data are statistically treated using Kruskal-Wallis test and Bonferroni test was performed as post hoc test (P=.05). Results: The evaluation of FE-SEM images revealed no diffenrence at micro-surfaces between each groups. Total coating dose was higher at physical adhesion experimental group than at chemical fixation experimental group. In cell adhesion and proliferation, RGD peptide coating did not show a statistical significance compared with control group (P>.05). In cell differentiation and mineralization, physical adhesion method displayed significantly increased levels compared with control group and chemical fixation method (P<.05). Conclusion: RGD peptide coating seems to enhance osseointegration by effects on the response of human mesenchymal stem cell. Especially physical adhesion method showed more effective than chemical fixation method on response of human mesenchymal stem cell.
Kim, Haeseop;You, Jeheon;Jo, Yeongcheol;Lee, Youngjae;Park, Inbae;Park, Jeongwook;Jung, Myung-A;Kim, Young-Suk;Kim, Sunoh
Journal of the Korean Society of Food Science and Nutrition
/
v.42
no.2
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pp.175-181
/
2013
This study investigated the ability of extracts from Lentinus edodes (LE) and rice with Lentinus edodes mycelium (LEM) to inhibit diabetes and obesity. Lipid accumulation significantly decreased by 78% and 74% upon treatment with 300 ${\mu}g/mL$ of LE and LEM, respectively (p<0.01). Cholesteryl ester transfer protein (CETP) inhibition activity increased by 94% and 99% upon treatment with 300 ${\mu}g/mL$ of LE and LEM, respectively. In order to investigate the effect of LE and LEM on diabetes, the inhibition of protein tyrosine phosphate 1B (PTP1B) activity from the LE and LEM extracts at various concentrations (1, 3, 10, 30, 100, 300 ${\mu}g/mL$) was assessed. PTP1B activity by treatment with 10, 30, and 100 ${\mu}g/mL$ of LE, was inhibited at a rate of 7, 9, and 7% respectively. Also, PTP1B activity from treatment with increasing concentration of LEM led to a significant concentration-dependent inhibition of PTP1B activity (p<0.01). LE and LEM were orally administered for 28 days after a high fat diet (HFD). LE and LEM significantly reduced triglyceride, cholesterol, HDL-cholesterol and LDL-cholesterol levels. GOT and GPT were not significantly effected. These results indicate that extracts of LE and rice with LEM have potent activities useful in the treatment of obesity and diabetes mellitus.
Journal of the Korean Society of Food Science and Nutrition
/
v.38
no.12
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pp.1691-1698
/
2009
The purpose of this study was to investigate the antioxidative and antiallergic effects of persimmon leaf extract. Antioxidative and anti-inflammatory effects of the crude persimmon leaf extract (PLE) and the partially purified persimmon leaf extract (PPLE) were determined in in vitro assays by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and superoxide anion radicals, and 5-lipoxygenase (5-LO) and cyclooxygenase (COX). Total phenols and total flavonoid levels of PLE and PPLE were $230.0{\pm}19.6$ mg/g and $475.5{\pm}38.7$ mg/g, and $34.8{\pm}6.5$ mg/g and $78.8{\pm}3.6$ mg/g, respectively. DPPH and superoxide radical-scavenging activities ($SC_{50}$) of the PLE and PPLE were $23.8{\pm}3.2$ ppm and $10.0{\pm}1.3$ ppm, and $47.6{\pm}3.4$ ppm and $22.4{\pm}3.3$ ppm, respectively. Inhibitory activities ($IC_{50}$) of PLE and PPLE against 5-LO, COX-1 and COX-2 were $77.1{\pm}11.7$, $38.6{\pm}7.0$ ppm, $47.4{\pm}7.7$, $25.3{\pm}6.3$ ppm, and $129.5{\pm}5.5$, $84.5{\pm}2.3$ ppm, respectively. Moreover, two extracts inhibited dose-dependently NO production in LPS-stimulated RAW 264.7 cells, and also effectively inhibited the cutaneous anaphylaxis reaction activated by anti-dinitrophenyl IgE antibody in mice. These results suggest that PLE and PPLE may be useful for phytochemical materials for prevention and treatment of radical-mediated pathological and allergy diseases.
Objective: To investigate the association of FSH receptor (FSHR) polymorphism at position 680 with outcomes of controlled ovarian hyper-stimulation for IVF-ET in Korean women. Design: Genetic polymorphism analysis. Materials and Methods: The FSHR polymorphism was analyzed by PCR-RFLP in 172 ovulatory women below the age of 40 year. Patients with polycystic ovary syndrome, endometriosis, or previous history of ovarian surgery were excluded. Results: Genotype distribution was 41.9% for the Asn/Asn, 47.7% for the Asn/Ser, and 10.5% for the Ser/Ser FSHR genotype group. There was no difference in age of subjects and infertility diagnosis between genotype groups. When the patients were grouped according to their FSHR genotype, the basal levels of FSH (day 3) were significantly different among the three groups ($6.0{\pm}0.3\;IU/L$ (mean $\pm$ SEM), $5.8{\pm}0.3\;IU/L$, and $8.6{\pm}1.2\;IU/L$ for the Asn/Asn, Asn/Ser, and Ser/Ser groups, respectively, p=0.002). The Ser/Ser group showed a higher total doses of gonadotropins required to achieve ovulation induction, and a lower serum estradiol levels at the time of hCG administration compared with other two groups, but the differences were of no statistical significance. The numbers of oocytes retrieved were significantly different among the three groups ($8.6{\pm}0.8$, $9.9{\pm}0.6$, and $6.3{\pm}0.9$, for the Asn/Asn, Asn/Ser, and Ser/Ser groups, respectively, p=0.049). Clinical pregnancy rates were 42.4%, 25.9%, and 29.4% for the Asn/Asn, Asn/Ser, and Ser/Ser groups, respectively. Conclusion: Homozygous Ser/Ser genotype of FSHR polymorphism at position 680 was associated with decreased ovarian response to gonadotropin stimulation for IVF-ET.
This study was performed to investigate the antioxidant effect of Sansa (Crataegi fructus) extract in vitro, and to evaluate the functional effects of Sansa powder addition on the quality properties and storage characteristics of Tteokgalbi. Total polyphenol and flavonoid contents of Sansa extract were found to be 127.00 mg/g and 54.05 mg/g, respectively. The DPPH radical scavenging activity of Sansa extract was high and it was similar to the BHA and BHT. The Tteokgalbi was prepared by 0% (N), 0.1% (S1), 1% (S2), and 2% (S3) of the Sansa Powder. Addition of Sansa powder decreased the protein and lipid contents, but the ash content was significantly increased (p<0.05). Increasing the amount of Sansa powder in the pork Tteokgalbi tended to increase the water holding capacity (WHC) values and the cooking loss (p<0.05). The addition of Sansa powder increased the hardness and chewiness values, but did not affect the cohesiveness and springiness values. In the sensory evaluation, the S3 Tteokgalbi had the best score in color. Values of pH, total microbial counts, thiobarbituric acid (TBA) and volatile basic nitrogen (VBN) values decreased significantly added Sansa powder relative to the normal (p<0.05). The S3 Tteokgalbi was significantly (p<0.05) more effective for delaying lipid peroxidation than the other groups. Sansa powder addition increased the L (lightness) and a (redness) values. Therefore, the results demonstrate that adding the Sansa powder to the pork Tteokgalbi tended to improve antioxidative and antimicrobial effects during the chilled storage period.
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