Kim, Jae-Min;Cho, Myoung-Lae;Seo, Kyu-Eun;Kim, Ye-Seul;Jung, Tae-Dong;Kim, Young-Hyun;Kim, Dan-Bi;Shin, Gi-Hae;Oh, Ji-Won;Lee, Jong Seok;Lee, Jin-Ha;Kim, Jong-Yae;Lee, Dae-Won;Lee, Ok-Hwan
Journal of the Korean Society of Food Science and Nutrition
/
v.44
no.8
/
pp.1172-1179
/
2015
This study investigated optimal extraction conditions for application of Ulmus pumila L. as a natural antioxidant. U. pumila L. was extracted using ethanol (EtOH) at various concentrations (0, 40, and 80%) and extraction times (1, 2, and 3 h) at $70^{\circ}C$ and then evaluated for extraction yield, total phenolic contents, total flavonoid contents, as well as antioxidant activities [2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activity, reducing power, and oxygen radical absorbing capacity (ORAC)]. Antioxidant activities were correlated with total phenolic and flavonoid contents. Of the solvent conditions, 80% EtOH extracts for 3 h at $70^{\circ}C$ showed the highest total phenolic and flavonoid contents with strong antioxidant activities, although there were no significant time effects on DPPH and ABTS radical scavenging activities and reducing power. However, ORAC values of all EtOH extracts remarkably increased in a time-dependent manner. In addition, 80% EtOH extract for 3 h exhibited strong antioxidant effects on HDF and 3T3-L1 cells. Therefore, the antioxidant capacity of U. pumila L., may due to phenolic and flavonoid contents, and extraction conditions were 80% EtOH for 3 h at $70^{\circ}C$. This extract could be a good source for natural antioxidants.
Park, Hae-Sun;Jun, Do-Youn;Fang, Zhe;Woo, Mi-Hee;Kim, Young-Ho
Journal of Life Science
/
v.18
no.2
/
pp.167-174
/
2008
Antimicrobial activity of Zanthoxylum piperitum was investigated against Streptococcus mutans that causes dental caries. Although the methylene chloride extract of seeds exhibited higher antimicrobial activity than other organic solvent extracts, including methanol, ethyl acetate, and hexane extracts of pericarps or seeds of Z. piperitum, essential oils prepared from both seeds and pericarps possessed more potent inhibitory activity than the methylene chloride extract of seeds. The minimal inhibitory concentrations (MICs) of the essential oils of seeds and pericarps were 0.3 mg/ml and 4.0 mg/ml against S. mutans, respectively. When the seed essential oil was further separated into seven fractions (CS-SD-A${\sim}$CS-SD-G) by thin layer chromatography (TLC), all fractions exhibited lower antimicrobial activity than the essential oil. To understand the antimicrobial ingredients of Z. piperitum, seeds the gas chromatography-mass spectrometry (GC-MS) data of the methylene chloride extract of seeds was compared with those of the seed essential oil (CS-SD). Whereas the methylene chloride extract of seeds contained carvacrol (0.24%), ${\beta}$-caryophyllene (1.72%), and ${\alpha}$-humulene (0.88%), which were previously known to inhibit growth of S. mutans, the seed essential oil contained sabinene (1.57%), linalool (1.55%), citronellal (13.67%), terpinene-4-ol (0.45%), citronellol (3.69%), geraniol (0.9%), linalyl acetate (1.35%), ${\beta}$-caryophyllene (1.35%), ${\alpha}$-humulene (0.78%), and ${\delta}$-cadinene (0.67%) in this regard. These results indicate that Z. piperitum seeds possess various inhibitory substances against S. mutans, and an effective method to isolate the active ingredients from the seeds is to prepare the essential oil. These results also suggest that the essential oil of Z. piperitium seeds may be applicable to preventing dental caries.
Journal of the Korean Applied Science and Technology
/
v.35
no.1
/
pp.263-272
/
2018
The object of this study was to measure the bioactivity and lipid peroxidation inhibition activity of peel from Gardenia jasminoides Ellis fructus (GJE) in Namhae Korea. The amount of phytic acid was also determined. Extraction was performed using three solvents, CM (choloform:methanol, 2:1, v/v), n-butanol and 70% ethanol. To investigate by the solvent extract of total phenol content and value as a functional food ingredient of GJE peel through nitrogen oxide scavenging activity, antioxidant activity, reducing power and lipid peroxidation inhibition were performed. The bioactivities of the extract solvents increased significantly with increasing concentrations (0.2, 0.4, 0.6 mg/mL, p<0.05). The total phenol contents of GJE peel extracts were highest in CM ($39.74{\pm}0.15mg\;CAE/g$) extract. The order of total phenol contents, antioxidant activity and reducing power of the solvents in the GJE peel were the same, in the analysis of nitrogen oxides scavenging activity and lipid peroxidation inhibition, it was confirmed the results were inconsistent. As a result, the GJE peel showed excellent bioactivities. Considering the extraction yield and various physiological activities, it is considered that efficiency is better when extracted from CM and 70% ethanol extracts.
To examine antitumor activity of the edible plant Zanthoxylum schinifolium, the cytotoxic effect of various organic solvent extracts of its stems on human acute leukemia Jurkat T cells was investigated. Among these extracts such as methanol extract (SS-7), methylene chloride extract (SS-8), ethyl acetate extract (SS-9), n-butanol extract (SS-10), and residual fraction (SL-11), SS-8 exhibited the most cytotoxic activity against Jurkat T cells. The methylene chloride extract (SS-8) possessed the apoptogenic activity capable of inducing sub-G1 peak along with apoptotic DNA fragmentation in Jurkat T cells. Western blot analysis revealed that SS-8 induced apoptosis via mitochondrial cytochrome c release into cytoplasm, subsequent activation of caspase-9 and caspase-3, and cleavage of PARP, which could be blocked by overexpression of Bcl-xL. Jurkat T cell clone I2.1 $FADD^{-/-}$) and Jurkat T cell clone I9.2 (caspase-$8^{-/-}$ were as sensitive as was the wild-type Jurkat T cell clone A3 to the cytotoxic effect of SS-8, suggesting no contribution of Fas/FasL system to the SS-8-mediated apoptosis. The GC-MS analysis of SS-8 showed that it was composed of 16 ingredients including 9,12-octadecanoic acid (18.62%), 2,4-dihydro-5-methyl-4- (1-methylethylidene)- 2-(4-nitrophenyl)-3H- pyrazol-3-one (14.97%), hexadecanoic acid (14.23%), (z,z)-6,9-pentadecadien- 1-ol (13.73%), 5,6-dimethoxy-2-methyl benzofuran (10.95%), and 4-methoxy-2-methylcinnamic acid (5.38%). These results demonstrate that the methylene chloride extract of the stems of Z. schinifolium can induce apoptotic cell death in Jurkat T cells via intrinsic mitochondria-dependent caspase cascade regulated by Bcl-xL without involvement of the Fas/FasL system.
Journal of the Korean Society of Food Science and Nutrition
/
v.35
no.4
/
pp.395-401
/
2006
In this study, we investigated anticarcinogenic effects of extracts from Gloiopeltis tenax (GT). GT was extracted with methanol (GTM), which was then further fractionated into four fractions by using solvent fractionation method, affording methanol (GTMM), hexane (GTMH), butanol (GTMB) and aqueous (GTMA) soluble fractions. We determined the cytotoxic effects of these fractions on cancer cells by MTT assay. Among various fractions of GT, the GTMM showed the strongest cytotoxic effect at concentration of $150{\mu}g/mL$, displaying 95.97% on HepG2 cell lines and 93.64% on HT-29 cell lines, respectively. And, the anti-proliferative effect of GT was accompanied by a marked in increase of levels of Bad, Bax, Bok and Bak protein and activation of caspase-3, caspase-7 and PARP protein. Also, we observed quinone reductase (QR) induced effects in all fraction layers of GT on HepG2 cells. The QR induced effects of the GTMM and GTMB on HepG2 cells at concentration of $60{\mu}g/mL$ showing inductive indexes of 2.86 and 2.04 compared to the control value of 1.0.
Journal of the Korean Society of Food Science and Nutrition
/
v.46
no.5
/
pp.545-551
/
2017
Curcuma longa L. (CL) is widely used as a spice and coloring agent in several foods, such as curry and mustard, as well as cosmetics and drugs. In this study, we investigated the protective effects of CL extracted with various solvents [methanol (MC), ethanol (EC), acetone (AC)] on $H_2O_2-induced$ DNA damage in human leukocytes along with total polyphenol contents (TPC) and antioxidant properties. The antioxidant effects of CL were determined by measuring 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity (RSA) and superoxide dismutase (SOD)-like activity. The preventive effect of CL on oxidative stress-induced DNA damage and DNA repair capacities were assessed using comet assay. MC showed the highest TPC (11.17 g gallic acid equivalents/100 g) and antioxidant properties among the solvent extracts. The $SC_{50}$ for DPPH RSA was MC: 35.0 > AC: 45.8 > EC: $57.8{\mu}g/mL$ and SOD-like activity was MC: 46.6 > EC: 141.5 > AC: $296.4{\mu}g/mL$. In the comet assay, the $ED_{50}$ value of MC showed the highest inhibition ($86.7{\mu}g/mL$) of $H_2O_2-induced$ DNA damage, followed by AC ($110.0{\mu}g/mL$) > EC ($115.8{\mu}g/mL$). Analysis of the percentage of damaged cells showed that repair capacity significantly decreased at 4, 8, and 12 h from $H_2O_2-induced$ oxidative stress in each extract. After 12 h, level of DNA damage recovery was similar to the negative control level. These results suggest that CL has potential antioxidant activity and a protective effect against oxidation-induced DNA damage, and the methanol extract of CL was the most effective.
Entomopathogenic fungus Cordyceps militaris is famous for its medicinal efficacies. It has been reported to have various pharmacological activities such as anti-tumour, insecticidal, antibacterial, immunomodulatory and antioxidant. In this study, we investigated the effect of the extract of C. militaris (MPUN8501), which was identified by the analysis of the nucleotide sequences of 5.8S ribosomal RNA, on the function of liver. C. militaris powder was extracted using hot water extracts method as time, volume and temperature and using method as differential polarity of organic solvent. Each fraction was tested for the improvement of hepatic enzyme alcohol dehydrogenase (ADH) and acetaldehyde dehydrogenase (ALDH) activity. The BuOH extracts (CME) had highest activity which was used for the test of toxicity and efficacy of C. militaris. The enhancing effect of CME on the activity of ADH and ALDH was much more than medicine, drink, natural tea etc. Thus CME promoted the resolution of alcohol and acetaldehyde in rats, inducing recovery to normal condition rapidly. Furthermore, oral administration of CME effectively protected the carbon tetrachloride-induced acute hepatic injury as revealed by the hematological parameters (levels of sGOT and sGPT) and histological observation. CME was ascertained to be safe by regulatory toxicity studies of single dose toxicity and genotoxicity. These results suggest that CME would be useful for the maintaining normal hepatic activity as a functional health food.
Journal of the Korean Society of Food Science and Nutrition
/
v.41
no.9
/
pp.1197-1204
/
2012
As an effort to develop functional food ingredients and to discover the biological activity, the total phenolic content, total flavonoid content, DPPH and ABTS radical scavenging activity, SOD-like activity, ferric reducing antioxidant power (FRAP), and $Fe^{2+}$ chelating of Aster scaber were measured using a 70% ethanol extract and various solvent fractions. As a result, the total phenolic concent was highest in an ethyl acetate fraction of 141.9 mg GAE eq/g and the total flavonoid content was 105.6 mg QUE eq/g. The DPPH radical scavenging activity was highest in an ethyl acetate fraction of 97.1% at a concentration of 1,000 ${\mu}g/mL$ (p<0.05). The ABTS radical scavenging activity showed a 86.9% ethyl acetate fraction and a 57.9% butanol fraction at a concentration of 125 ${\mu}g/mL$, and higher than that of positive control (${\alpha}$-tocopherol and BHT) (p<0.05). The SOD-like activity showed 42.8% in an ethyl acetate at a concentration of 1,000 ${\mu}g/mL$. The ethyl acetate fraction showed the highest value of FRAP at 1051.9 ${\mu}M$ and a concentration of 1,000 ${\mu}g/mL$ (p<0.05). The $Fe^{2+}$chelating was highest in the 70.1% chloroform fraction at a concentration of 500 ${\mu}g/mL$ (p<0.05). There is the highest correlation between DPPH radical scavenging activity and FRAP (r=0.981) as compared to other antioxidant assays (p<0.01). With these results, we confirmed that the ethyl acetate fraction of Aster scaber has great antioxidant potential. So it can be expected to be developed into a specific functional food ingredient.
Potatoes were first introduced outside the Andes region four centuries ago, and have become an integral part of much of the world's food. Potatoes were first introduced into Europe in the 16th century and Korea in the early 19th century. In the nutritional aspects, potatoes contain abundant vitamins and minerals, as well as an assortment of phytochemicals such as carotenoids and natural phenols. Chlorogenic acid constitutes up to 90% of potato natural phenols. Due to the high content of potato functional compounds, it has known that potatoes are effective in the prevention of various human diseases. Recently, color-fleshed potatoes 'Hongyoung' and 'Jayoung' were developed by RDA, and it has reported that they have high content of anthocyanin. Additionally they show higher radical scavenging activity compared to white or yellow fleshed potatoes. So it will be expected that the consumption of color-fleshed potatoes grandually increase by pre-peeled potatoes and color potato chips. This study was conducted to enhance the peel of color-fleshed potatoes utilization and to determine the biological activity of peel of color-fleshed potatoes extract. The anti-inflammatory effects on ethanol extract and its solvent fraction were also evaluated. The anti-inflammatory activities of $CHCl_3$ fraction was evaluated for inhibitory activities against lipopolysacchride(LPS) induced nitric oxide(NO) and prostaglandin $E_2(PGE_2)$ production as well as inducible nitric oxide synthase(iNOS) and cyclo oxygenase-2(COX-2) protein expressions in RAW264.7 cell lines. The fraction inhibitory activity for both tests with $IC_{50}$ values showed in the ranges of $25{\sim}50{\mu}g/ml$. This result revealed that $CHCl_3$ fraction of Jayoung's peel is expected to be good candidate for development into source of anti-inflammatory agent.
Kim, Mi-Sun;Lee, Ye-Seul;Kwon, Ha-Young;Kim, Jong Sik;Sohn, Ho-Yong
Microbiology and Biotechnology Letters
/
v.42
no.1
/
pp.58-66
/
2014
In the course of study for a use for non-edible parts of broccoli (Brassica oleracea L), and the development of processed food utilizing these parts, edible floret and non-edible stalk were extracted with ethanol and different organic solvent fractions were prepared. With 10 different extracts and fractions, their useful components and various biological activities, such as antioxidant, antimicrobial and anti-proliferation activity, were investigated. The stalk has more abundant water soluble carbohydrate when compared with the floret, and floret has higher hexane-soluble pigments. Analysis of total flavonoid and total polyphenol contents showed that the floret has 1.5~1.99 times higher concentrations than the stalk. Among the fractions, ethylacetate (EA) fractions have the highest amount of total flavonoid and total polyphenol. The stalk and floret possessed 9.45 and 42.01 mg-total flavonoid/g, respectively. In the antioxidation activity assay, the EA fraction of floret showed strong radical scavenging activity and reducing power, while the n-hexane fraction of the stalk exhibited nitrite scavenging activity. In the antimicrobial activity assay, the EA fraction of floret showed a strong and broad-range of antibacterial activity, irrespective of gram positive or gram negative bacteria. In a while, the hexane and EA fractions revealed anti-proliferative effects against the human colorectal cancer cell HCT-116. Strong anti-proliferative activities were found in the hexane fraction of stalk (18.4% of cell viability), and the n-butanol fraction of floret (6.9% of cell viability). Our results suggest that the further study of the characterization of active fractions and the identification of active components from different parts of broccoli are needed to develop functional foods or novel plant-derived medicines.
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