Prunus mume is well known contain many functional materials that play beneficial roles in the human body. Studies have found that many organic acids and polyphenol compounds exist in Prunus mume. In this study, content of total polyphenols and flavonoids, antioxidative activity and cytotoxicity of ethanol extract from Prunus mume were measured Contents of total polyphenolic and total flavonoid compounds in ethanol extract from Prunus mume were 16.92 mg/g and 59.95 mg/g, respectively. The $IC_{50}$ of ethanol extract from Prunus mume were $237.72 {\mu}g$/assay and $239.58 {\mu}g$/assay by DPPH and ABTS radical cation scavenging test, respectively. Additionally, ferric ion reducing antioxidant power (FRAP) value of ethanol extract from Prunus mume was 0.94 mM ($FeSO_4$ eq.) by $800 {\mu}g$/assay. Cytotoxicity of Prunus mume against five kinds of cancer cell lines increased as the extract concentration increased Especially, cytotoxicity of the ethanol extract against A-549 (lung cancer line) was higher than that against any other cancer cell line by both MTT and SRB assay. These results show that ethanol extract of Prunus mume has considerably high antioxidative and cytotoxic activities.
Journal of the Korean Society of Food Science and Nutrition
/
v.45
no.8
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pp.1122-1129
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2016
In this study, bioactive constituents and biological activities of aronia, blackcurrant, and maquiberry were investigated. The 60% ethanol extracts were prepared and evaluated for total polyphenol, total flavonoid, and total anthocyanin contents. Biological activities, including 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activities, ferric reducing antioxidant power (FRAP), reducing power, tyrosinase inhibitory activity, and nitrite scavenging activity were also examined. Maquiberry showed the highest bioactive constituents as shown based on total polyphenol (73.66 mg GAE/g), total flavonoid (28.08 mg/g), and total anthocyanin (12.82 mg/g) contents compared to aronia and blackcurrant. Maquiberry also exhibited the highest DPPH and ABTS radical scavenging activity, FRAP, and reducing power at a concentration of 5 mg/mL, which were superior to those of ascorbic acid (a positive control). Therefore, maquiberry could be used as a potential source of antioxidants and functional food substances.
The purpose of this study is to determine the possibility of using Agarum cribrosum as a natural health food source. To accomplish this purpose, the contents of the general and antioxidant activities of Agarum cribrosum were measured. The contents of carbohydrate, crude protein, crude lipid and ash were 45.4%, 15.0%, 2.3% and 33.1%. The calories of Agarum cribrosum were 262.3 kcal and total dietary fiber of Agarum cribrosum was 34.0%. The protein contained a total of 18 different kinds of amino acids. The content of amino acids was 12,402.42 mg/100 g. The K was the largest mineral followed by Ca, Na and Mg, implying that Agarum cribrosum is an alkali material. The antioxidant activity of Agarum cribrosum was assessed by various radical scavenging assays using DPPH (2,2-diphenyl-1-picrylhydrazyl), FRAP (ferric ion reducing antioxidant power), reducing power, and ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)). All antioxidant activity of Agarum cribrosum extract increased the concentration of the dependents. Total phenolic contents of Agarum cribrosum extract were $34.1{\pm}2.56mg/g$, and total flavonoids contents were estimated at $4.9{\pm}0.26mg/g$. General nutrients and other antioxidant bioactive materials in Agarum cribrosum were also potential materials for good health food. It is expected that a follow-up study of Agarum cribrosum through developing processed food and evaluation of their functional properties would provide useful information or sources of functional foods.
Wild grass is edible, and it grows in the mountains or field areas. Wild grass has diverse biological effects, such as antiobesity, anti-cancer, antioxidant activities and immune stimulation. Currently, many studies are aimed at enhancing the efficacy of medicinal foods on biological activity using a bioconversion technology, including the fermentation process. In this study, the quality characteristics and antioxidative activity of the fermented wild grass was investigated. The antioxidant activity of fermented wild grass was assessed by various radical scavenging assays using DPPH(2,2-diphenyl-1-picrylhydrazyl), FRAP(ferric ion reducing antioxidant power), reducing power, and ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)). Moisture contents of the fermented wild grass is $49.6{\pm}0.06%$. Contents of crude ash, crude protein, and crude fat were $0.65{\pm}0.01$, $0.65{\pm}0.04$, and $3.3{\pm}0.59%$, respectively. Moreover, fermented wild grass showed that the hunter's color values were 80.36(lightnees), 11.47(redness), and 44.53(yellowness), respectively. Total phenolic contents of the fermented wild grass was $1,185{\pm}159{\mu}g$ GAE(gallic acid equivalent)/g. The antioxidative activities of the fermented wild grass were significantly increased in a dose dependent manner. In addition, fermented wild grass did not show any cytotoxicity up to 500 ${\mu}g/m{\ell}$. However, the anti-adipogenic effect of the fermented wild grass extract was barely detectable. This antioxidant potential is partly due to the phenolic compounds that are present in the fermented wild grass extracts.
Kim, Dong-Pil;Jung, Yong-Hee;Lee, Mi-Kyung;Song, Hee-Sun
The Korean Journal of Food And Nutrition
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v.20
no.2
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pp.150-157
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2007
Hamcho(Salicorinia herbacea, glasswort), a halophyte, is an annual succulent shrub that grows on coastal wetlands and has been regarded as a functional food for good health. Natural dried red and green Hamcho were extracted with 25% ethanol and water at 70$^{\circ}C$. The antioxidant activities of these four extracts were examined by six different assays, including the measurement of total phenolics, radical scavenging effects on 1,1-diphenyl-2-picrylhydrazyl(DPPH), nitric oxide(NO) and nitrite(NO$_2$) scavenging effects, reducing power, and the inhibitory effect on tyrosinase activity. The total phenolic contents of the four extracts were high at 237 ${\sim}$ 255 mg of gallic acid equivalents per 1 g of dried sample tested. The green Hamcho extracts contained more phenolic compounds than the red Hamcho extracts. When they were compared to tocopherols, the antioxidant activities of the green and red Hamcho powders were significantly higher at the same concentration levels(5 mg and 3 mg, respectively) in a POV test. The inhibition effects of the four extracts at a level of 75 ${\mu}l$ were higher than 98% in the POV test. The red Hamcho 25% ethanol extract showed a high significant effect on DPPH radical scavenging(SC$_{50}$, 90.1 ${\mu}l$). The green Hamcho 25% ethanol extract, however, showed a high significant effect on NO radical scavenging(SC$_{50}$, 6.1 ${\mu}l$). The NO$_2$ radical scavenging effect was assayed at pH 1.2, 4.2 and 6.0, and all the Hamcho extracts scavenged the NO$_2$ radical much more effectively at pH 1.2. The NO$_2$ scavenging effect of the red Hamcho 25% ethanol extract(64%) was as high as that of 5 mM vitamin C at pH 1.2(p<0.05). In the reducing power test, the red Hamcho 25% ethanol extract revealed the highest ferric ion reducing activity among the Hamcho extracts, and its activity was as high as that of 0.33 mg/ml of vitamin C. The four Hamcho extracts showed high tyrosinase inhibition effects of more than 80%, and their activities were higher than 50${\mu}$g of kojic acid. The green and red Hamcho 25% ethanol extracts totally inhibited tyrosinase activity(100%). Therefore, the results suggest that red Hamcho extracts may serve as useful natural antioxidants along with green Hamcho extracts.
Objectives : This study was conducted to evaluate the cytotoxic protective effects of Jinsimyusaeng-hwan (Modified Ojayeonjong-hwan) against oxidative stress. Methods : 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'-azinobis-(3-ethyl-benzothiazoline-6-sulfonic acid)(ABTS) radical scavenging activity and ferric reducing ability of plasma (FRAP) method were used to estimate the antioxidant activity of Jinsimyusaeng-hwan. C2C12 myoblasts were used to reevaluate the antioxidant effects. And apoptosis analysis, mitochondrial membrane potential analysis, measurement of intracellular reactive oxygen species levels were conducted to investigate antioxidant activity of Jinsimyusaeng-hwan. Results : In comparison of DPPH free radical and ABTS cationic radical scavenging activity, it increased as the concentration of water extracts of Jinsimyusaeng-hwan(WEJ) and 70% ethanol extracts of Jinsimyusaeng-hwan (EEJ) increased. In the results of comparing the total phenol content and reducing power using the FRAP method, extracts with high total phenol content also showed high reducing power. In comparison of the protective effect against H2O2-induced oxidative stress in C2C12 myoblasts, WEJ had no significant effect, but the EEJ inhibited H2O2-mediated cytotoxicity in a concentration-dependent manner. The cytotoxic protective effect of EEJ against oxidative stress in C2C12 myoblasts was correlated with their inhibitory effects on H2O2-induced apoptosis and cell cycle arrest. In H2O2-treated C2C12 myoblasts, the apoptosis inhibitory effects of EEJ were associated with suppression of mitochondrial dysfunction and DNA damage. The protective effect of EEJ against H2O2-induced oxidative stress in C2C12 myoblasts were directly related to the inhibition of ROS generation. Conclusion : Jinsimyusaeng-hwan extracts have cytotoxic protective effects against oxidative stress, and it was better in 70% ethanol extract than in water extract.
Song, Zhigang;Zhu, Lixian;Zhao, Tong;Jiao, Hongchao;Lin, Hai
Asian-Australasian Journal of Animal Sciences
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v.22
no.10
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pp.1400-1406
/
2009
The effects of dietary copper (Cu) supplementation in broiler chickens challenged with a single injection of Salmonella typhymurium lipopolysaccharide (LPS) on the antioxidant capacity and plasma levels of ceruloplasmin (Cp) were evaluated. The broiler chickens were provided with a basal diet or diets supplemented with 8 and 50 mg/kg Cu from 1d of age. At 25d of age, 48 chickens with similar body weight were selected from each diet. Half of the chickens in each dietary treatment were injected intraperitoneally (i.p.) with LPS (1 mg/kg body weight). The other half was injected with saline, serving as the control. Body weight gain and feed consumption were significantly suppressed by LPS challenge during the first 12-h after injection, regardless of dietary Cu levels. Feed efficiency was reduced by LPS injection during the 72-h experimental period. Dietary Cu levels had no significant effect (p>0.05) on the plasma ceruloplasmin concentrations in chickens injected with saline. In contrast, high dietary level of Cu elevated plasma Cp levels in chickens with LPS challenge. Short-term LPS challenge had no significant effect on the antioxidant ability of broilers, as indicated by superoxide dismutase, ferric reducing/antioxidant power and the thiobarbituric acid reacting substances in the plasma. The result suggests that high dietary Cu level (as much as 50 mg/kg supplementation) is favorable for coping with short-term LPS challenge through upregulating plasma Cp levels.
Aloe vera has been used in traditional medicine for the therapy of a variety of disorders, such as wounds and burns. However, few studies have examined the antioxidant capacities of A. vera plants during different growth periods. In order to investigate the effects of growth on antioxidant activity, A. vera was prepared from 2-, 4-, 6-, 8-, and 12-month-old aloe. The extracts from 6-month-old A. vera showed the highest contents of flavonoids (9.750 mg catechin equivalent/g extract) and polyphenols (23.375 mg gallic acid equivalent/g extract) and the highest ferric reducing antioxidant power (0.047 mM ferrous sulfate equivalent/mg extract). The extract from 6-month-old A. vera exhibited the highest free radical scavenging potential, and the lowest IC50 values were found for 2,2-diphenyl-1-picrylhydrazyl (0.26 mg/ml) and alkyl radicals (0.50 mg/ml). In addition, the extract from 6-month-old A. vera showed the greatest effects on cell viability in normal liver cells. Based on these findings, the extract from 6-month-old A. vera was examined further in order to determine its protective potential against tert-butyl hydroperoxide (t-BHP)-induced oxidative stress. The extract from 6-month-old A. vera at a concentration of 0.25 mg/ml showed the highest protective activity against t-BHP-induced reactive oxygen species production. These findings suggested that harvesting regimens were critical in the regulation of effects of the bioactive potential of A. vera on antioxidant activity.
Badejo, Adebanjo Ayobamidele;Adebowale, Adeyemi Philips;Enujiugha, Victor Ndigwe
Preventive Nutrition and Food Science
/
v.21
no.2
/
pp.90-96
/
2016
Snake tomato (Trichosanthes cucumerina) has been cultivated and used as a replacement for Lycopersicum esculentum in many Asian and African diets. Matured T. cucumerina fruits were harvested at different ripening stages and separated into coats and pulps for analyses to determine their suitability for use in culinary. They were analyzed for the nutritional composition and antioxidant potential using different biochemical assays [1,1-diphenyl-2-picrylhydrazyl, 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging activities, and ferric reducing antioxidant power] and antioxidative enzymes activities. The nutritional composition revealed that T. cucumerina contains over 80% water and is very rich in fiber, thus it can serve as a good natural laxative. The lycopene and ${\beta}$-carotene contents were especially high in the ripe pulp with values of $21.62{\pm}1.22$ and $3.96{\pm}0.14mg$/100 g, respectively. The ascorbic acid content was highest in the pulp of unripe fruit with a value of $56.58{\pm}1.08mg$/100 g and significantly (P<0.05) decreased as ripening progressed. The antioxidant potential of the fruits for the 3 assays showed that unripe pulp> ripe coat> ripe pulp> unripe coat. There were decreases in the antioxidant enzymes (superoxide dismutase, ascorbate peroxidase, and glutathione reductase) activities, with the exception of catalase, as ripening progressed in the fruits. These decreased activities may lead to the softening of the fruit during ripening. Harnessing the antioxidative potential of T. cucumerina in culinary through consumption of the coats and pulps will alleviate food insecurity and help maintain good health among many dwellers in sub-Saharan Africa and Southeast Asia.
Kang, Su Jin;Seo, Ji Yeon;Cho, Kye Man;Lee, Chang Kwon;Kim, Jeong Hwan;Kim, Jong-Sang
Preventive Nutrition and Food Science
/
v.21
no.3
/
pp.221-226
/
2016
A new type of doenjang was manufactured by mixing soaked soybean, koji (Rhizopus oryzae), cheonggukjang (Bacillus amyloliquefaciens MJ1-4 and B. amyloliquefaciens EMD17), and Pichia farinosa SY80 as a yeast, salt, and water, followed by fermentation with koji that was made by fermenting whole wheat with R. oryzae. The mixed culture doenjang was designed to have a more palatable flavor and stronger biological activities than the conventional product. The extract of mixed culture doenjang showed higher antioxidant activity than the commercial doenjang as evaluated by the ferric reducing antioxidant power assay although it was not significantly different from the commercial product in 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) radical scavenging activities. Further, the mixed culture doenjang reduced intracellular reactive oxygen species levels and protected cells from glutamate-induced cytotoxicity more efficiently in human hippocampal HT22 neuroblastoma cells than the commercial doenjang. In conclusion, a newly-developed mixed culture doenjang had a strong antioxidant activity in vitro and cultured cell model systems, exhibited a potential to prevent oxidative stress-associated disorders although animal and clinical studies are needed to confirm its in vivo efficacy.
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