Nutritional components of 4 kinds of red seaweeds, Meristotheca papulosa, Chondrus ocellatus, Gracilaria verrucosa, Gigartina tenella, were investigated to elucidate their functionality. Antioxidant activity and nitrite scavenging activity were analyzed from 70% ethanol extracted from these red seaweeds. Large difference in ash contents was found to exhibit among all samples analyzed in this study; $9.8{\pm}0.2g/100g$ for Gracilaria verrucosa and Gigartina tenella for $17.8{\pm}0.6g/100g$. While its crude fiber content was almost the same as those in other sample within a range between $2.0{\pm}0.4g/100g$ and $6.0{\pm}0.7g/100g$. Phenolic compounds content of Gracilaria verrucosa was also the highest as $78.4{\pm}1.0mg/g$, while the total flavonoids contents of Chondrus ocellatus and Gracilaria verrucosa were $14.9{\pm}0.5mg/g$ and $13.9{\pm}0.8mg/g$, respectively. These amounts were two folds higher than Meristotheca papulosa and Gigartina tenella. The total content of minerals was the highest in Meristotheca papulosa(12,107.7 mg/kg). The amount of glutamic acid was relatively high despite of small variation in measured levels of composition amino acid ($49.1{\sim}125.6mg/g$) for most samples investigated. SOD-like ability was significantly increased with increasing sample concentration, but its activity was lower. Gigartina tenella with highest electron donation ability exhibited increases in activity as $53.96{\pm}0.98%$ in concentration of 250 ${\mu}g/ml$ and $70.52{\pm}1.09%$ in 1000 ${\mu}g/ml$, respectively. In case of concentration of 100 ${\mu}g/ml$, particularly, the level of hydroxy radical scavenging activity were $57.87{\pm}1.70{\sim}62.07{\pm}0.87%$ which was significantly higher activity than ascorbic acid and BHT. Nitrite scavenging activity was the highest in Gracilaria verrucosa. Its activity was also increased from $24.04{\pm}1.9{\sim}27.52{\pm}0.82%$ in $100{\sim}500{\mu}g/ml$ concentration tp $34.81{\pm}1.36%$ in concentration of 1000 ${\mu}g/ml$.
Chang, Jun Pok;Doh, Eun Soo;Kil, Ki Jung;Yang, Jae Kyung;Yun, Chung Weon;Lee, Gun Hee;Jung, Yun Hae;Ji, Yoon Sun;Kim, Bo Ram;Choi, Myung Suk
Journal of Korean Society of Forest Science
/
v.100
no.3
/
pp.408-416
/
2011
Leaf and bulb of wild garlic (Allium victorials var. platyphyllum) from Ulleung Island and Gangneung region were extracted with water and 70% ethanol and investigated on its antioxidative activity. Total polyphenol content of Ulleung island wild garlic was higher than that of Gangneung region. Total polyphenol content in bulb was high compared to content of the leaves, and 70% ethanol extract of Ulleung Island leaf was high in 72.50 mg/g. Flavonoid content in leaf was higher than that of bulb, 70% ethanol extract of Ulleung Island leaf was high in 73.30 mg/g. Electron donating activity of 70% ethanol extract from Ulleung island and water extracts (55.13%) from Gangneung were higher than those of other extracts. Bulb extracts on electron donating activity were higher than those of the leaf extracts. SOD like activity of extracts was high in 70% ethanol extract of wild gallic leaf cultivated at Gangneung. Hydroxy radical scavenging activity of wild gallic was high in leaf extracts compared to activity of bulb extracts. Hydroxy radical scavenging activity (58.85%) of Ulleung island wild gallic leaf extracts was higher than that of the wild gallic leaves of Gangneung. Lipid peroxidation inhibitory activity was both high in water and 70% ethanol leaf extracts of Ulleung island and Gangneung region, especially, 70% ethanol extract of leaves from Ulleung island was the highest 73.33%. These results suggest that extracts from wild garlic could be used as an antioxidative functional food source.
Journal of the Korean Society of Food Science and Nutrition
/
v.43
no.9
/
pp.1334-1341
/
2014
To examine the biological activity of polysaccharide extracted from cultured mycelia of Schizophyllum commune, we determined anti-complementary activity and nitric oxide production as a measure of immunological activity, anti-lipidperoxidation and hydroxy radical scavenging activity as a measure of antioxidative activity, tyrosinase inhibitory activity, anti-microbial activity, and transdermal flux of polysaccharide extracted from cultured mycelia of S. commune. Polysaccharide extracted from S. commune activated the complementary system and produced nitric oxide in RAW 264.7 macrophages. Antioxidant activities as malondialdehyde values were $49.5{\pm}0.7$, $39.7{\pm}1.7$, $39.2{\pm}1.2$, and $2.6{\pm}0.5nM/mL$ for control, extracellular polysaccharide extracted from S. commune (SC-EP), ultrafiltrated polysaccharide extracted from S. commune (SC-UP), and butylated hydroxytoluene, respectively. Hydroxy radical scavenging activity ($IC_{50}$) of SC-UP and mannitol were 3.32 and 1.66 mg/mL, respectively. Tyrosinase inhibitory activities of SC-UP, arbutin, and kojic acid were 19.9%, 31.8%, and 99.0%, respectively. Anti-microbial activities of SC-UP appeared to be low, and transdermal fluxes of SC-UP were 0.47%, 0.73%, and 1.20% after 3, 6, and 9 hr, respectively. These findings suggest that polysaccharide extracted from S. commune has potential immunological and antioxidant activities.
Much progress has been made in understanding the subcellular events of the human lung injuries after acute exposure to environmental air pollutants. Host of those events represent oxidative damages mediated by reactive oxygen species such as superoxide, hydrogen peroxide, and the hydroxy, free radical. Recently, nitric oxide (NO) was found to be endogenously produced by endothelial cells and cells of the reticulo-endothelial system as endothelialderived relaxation factor (EDRF) which is a vasoactive and neurotransmitter substance. Together with superoxide, NO can form another strong oxidant, peroxonitrite. The relative importance of exogenous sources of $N0/N0_2$ and endogenous production of NO by the EDRF producing enzymes in the oxidative stresses to the heman lung has to be elucidated. The exact events leading to chronic irreversible damage are still yet to be known. From chronic exposure to oxidant gases, progressive epithelial and interstitial damages develop. Type I epithelial cells become thicker and cover a smaller average alveolar surface area while thee II cells proliferate instead. Under acute damages, the extent of loss of the alveolar epithelial cell lining, especially type II cells appears to be a good predictor of the ensuing irreversible damage to alveolar compartment. Interstitial matrix undergo remodeling during chronic exposure with increased collagen fibers and interstitial fibroblasts. However, Inany of these changes can be reversed after cessation of exposure. Among chronic lung injuries, genetic damages and repair responses received particular attention in view of the known increased lung cancer risks from exposure to several air pollutants. Heavy metals from foundry emission, automobile traffics, and total suspended particulate, especially polycystic aromatic hydrocarbons have been positively linked with the development of lung cancer. Asbestos in another air pollutant with known risk of lung cancer and mesothelioma, but asbestos fibers are nonauthentic in most bioassays. Studies using the electron spin resonance spin trapping method show that the presence of iron in asbestos accelerates the production of the hydroxy, radical in vitro. Interactions of these reactive oxygen species with particular cellular components and disruption of cell defense mechanisms still await further studies to elucidate the carcinogenic potential of asbestos fibers of different size and chemical composition. The distribution of inhaled pollutants and the magnitude of their eventual effects on the respiratory tract are determined by pollutant-independent physical factors such as anatomy of the respiratory tract and level and pattern of breathing, as well as by pollutant-specific phyco-chemical factors such as the reactivity, solubility, and diffusivity of the foreign gas in mucus, blood and tissue. Many of these individual factors determining dose can be quantified in vitro. However, mathematical models based on these factors should be validated for its integrity by using data from intact human lungs.
Objective : This experimental study was designed to determine the effects of BPT on obesity in vivo and in vitro. Methods : in vitro, BPTn extracts of various concentration(50, 100, 200 ${\mu}g/m{\ell}$) were added in 3T3-L1 cell. Adipocyte differentiation was measured by Oil Red O staining and Morphological examination. The expression of $C/EBP{\alpha}$ and $PPAR{\gamma}$ receptor was measured by western blot assay and RT-PCR in vivo, Rats were orally administered BPT daily for consecutive four weeks before poloxamer-407 induced hyperlipidemic state. The rats were sacrificed 24 hrs later for poloxamer-407 treated and then serum triglyceride, total cholesterol were measured ; Rats were orally administered BPT daily for consecutive four weeks before triton WR-1339 induced hyperlipidemic state. The rats were sacrificed 40 hrs later for triton WR-1339 treated and then serum triglyceride, total cholesterol were measured ; Rats with obesity were induced by the high fat-diet for six weeks and then serum triglyceride, total cholesterol, LDL-cholesterol, triglyceride, HDL-cholesterol, hydroxy radical, superoxide dismuatse activity were measured. Results : In vitro, The 3T3-L1 cells' differentiation was significantly decreased by BPT. The expression of $C/EBP{\alpha}$ and $C/EBP{\beta}$ was decreased by BPT. In vivo, BPT significantly reduced serum triglyceride, total cholesterol contents in poloxamer-407 treated rat. BPT significantly reduced serum triglyceride contents in Triton WR-1339 treated rat. Total cholesterol also reduced but did not show a significant change. BPT significantly reduced body weight gain of rat and adipose tissue mass of rats and serum triglyceride, LDL-cholesterol contents and significantly increased HDL-cholesterol, HTR(HDL-cholesterol/Total-cholesterol) in rats with obesity induced by the high fat-diet. BPT reduced blood lipid peroxide, hydroxy radical and increased superoxide dismuatse(SOD) activity.
Journal of the Korean Society of Food Science and Nutrition
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v.35
no.3
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pp.294-300
/
2006
This study was carried out to evaluate the possibility of citron seed as industrial resource by analyzing chemical properties and the antioxidant activity. Crude lipid content of citron seed was $35.29{\pm}0.18%$. Total mineral content in citron seed was 1171.64 mg/100g and the potassium content ($637.99{\pm}5.38mg/100g$) was the highest. The contents of total phenols and flavonoids in citrus seed were $24.44{\pm}1.10mg/100g$ and $2.27{\pm}0.18mg/100g$, respectively. The electron donating ability using DPPH, hydroxy radical scavenging activity and SOD-like activity were increased significantly by increased the sample concentration in the reaction mixture. The nitrite scavenging ability was dependent on pH of reaction mixture and sample concentration. It was higher activity at pH 1.2 than pH 4.2. During the storage of soybean oil, the peroxide and acid values of the oil were significantly increased regardless of addition of citron extract. But antioxidant activity of soybean oil added with ethanol extract from citron seed was superior to that of control (sample with no addition) at 16 days of storage.
Kim, Hyo-Jin;Lee, Ji-Yeon;You, Bo-Ram;Kim, Hye-Ran;Choi, Jae-Eul;Nam, Ki-Yeul;Moon, Byung-Doo;Kim, Mee-Ree
Journal of the Korean Society of Food Science and Nutrition
/
v.40
no.2
/
pp.156-162
/
2011
The objective of this study is to evaluate antioxidant activities of black ginseng prepared by nine repeated steaming-drying cycles. Ethanol extracts from each cycle of ginseng showed 33.5~41.0% of yields, 36.2~44.5% of moisture content and $64\sim66^{\circ}Brix$ of soluble solids. As the number of steaming-drying cycles increased, pH decreased, while the absorbance at 420 nm increased remarkably after the 4th cycle. Although the amounts of Rg1 and Rb1 contents quite decreased, the total phenol content of black ginseng (the final cycle of ginseng) was increased to 126%, compared with that of white ginseng. Antioxidant activities, determined by ferric-reducing antioxidant potential (FRAP), 2,2'-azinobis(3 ethybenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activity, 1,1-diphenyl-2-picrydrazyl (DPPH) and hydroxyl radical scavenging activities, increased remarkably as the number of steaming-drying cycles increased. Especially, FRAP value increased 155.6%. Also, $IC_{50}$ values for DPPH and hydroxyl radical scavenging activities of the final 9th-cycling product, decreased 4.5 folds and 9.7 folds, respectively, compared with those of white ginseng. Based on these results, it was suggested that antioxidant activities of black ginseng improve according to the increasing number of steaming-drying cycles, which was derived from increase of total phenol content.
Journal of the Korean Society of Food Science and Nutrition
/
v.39
no.7
/
pp.933-940
/
2010
To confirm antioxidant activity of black garlic, methanol extract of black garlic was fractioned by hexane, chloroform, ethyl acetate, buthanol and water. Antioxidant activities of solvent fractions were assayed in 100, 250, 500 and $1,000\;{\mu}g/mL$ concentrations. The contents of total phenol and flavonoids were significantly higher 5.5~11.6 times in chloroform, ethyl acetate and hexane fraction than other fractions. Antioxidant activities of solvent fractions were increased by higher sample concentrations and their activities were significantly higher in chloroform and ethyl acetate fractions than others. DPPH radical scavenging activity was over 50% in $1,000\;{\mu}g/mL$ concentration, except butanol and water fraction. In the same concentration, reducing power was also significantly lower in butanol and water fraction. ABTS radical scavenging activity was higher in hexane, chloroform and ethyl acetate fractions and was over 70% at $1,000\;{\mu}g/mL$ concentration. In $1,000\;{\mu}g/mL$ concentration, the range of hydroxy radical scavenging activity was 50.27~81.02% and SOD-like ability was 26.73~47.64%. Antioxidant activity in linoleic acid reaction system was significantly higher when storage time was longer and sample concentration was higher in non-polar solvent fractions. Nitrite scavenging activity was relatively higher than antioxidant activity and the activity in $100\;{\mu}g/mL$ concentration was over than 50%, except butanol fraction.
Journal of the Korean Society of Food Science and Nutrition
/
v.43
no.4
/
pp.530-536
/
2014
In this study, we investigated the quality and antioxidant activity of wet noodles fortified by adding brown rice and sorghum powders. Wet noodles were divided into four groups: WN-p (wheat flour 100%, purified salt 2%), WBN-b (wheat flour 80%, brown rice powder 20%, bamboo salt (${\times}1$) 2%), WBSN-b (wheat flour 80%, brown rice powder 10%, sorghum powder 10%, bamboo salt (${\times}1$) 2%), and WSN-b (wheat flour 80%, sorghum powder 20%, bamboo salt (${\times}1$) 2%). The wet noodles were evaluated for their quality characteristics and capacities to scavenge free radicals. The weight, volume, capacity to absorb water, and turbidity of cooked WBSN-b were close to those of cooked WN-p. Springiness, cohesiveness, and chewiness of cooked WBSN-b were the highest among all cooked noodles added with brown rice or sorghum powders and textural properties of cooked WBSN-b were not significantly different from WN-P. In the sensory evaluation, the overall acceptance of WBSN-b received the highest score of 6.4 points, which was higher than the score for WN-p. DPPH and hydroxyl radical scavenging activities increased significantly with addition of brown rice and sorghum powder, and radical scavenging activities of WBSN-b and WSN-b were the highest. In conclusion, wet noodles added with 10% brown rice powder, 10% sorghum powder, and 2% bamboo salt (${\times}1$) exhibited the same quality properties of WN-p. Addition of 10% brown rice powder, 10% sorghum powder, and 2% bamboo salt (${\times}1$) increased the sensory and antioxidant activities of wheat flour noodles.
Kim, Tae-Hyuk;You, Jin-Kyoun;Kim, Jeong-Mi;Baek, Jong-Mi;Kim, Hyun-Sook;Park, Jeong-Hae;Choe, Myeon
Journal of the Korean Society of Food Science and Nutrition
/
v.39
no.10
/
pp.1418-1424
/
2010
This study was performed to assess the antioxidant activities and whitening effects of Sorbus commixta HEDL cortex on melanin synthesis. The whitening effects of Sorbus commixta HEDL cortex water extracts were examined by in vitro mushroom tyrosinase assay and B16BL6 melanoma cells. We assessed inhibitory effects of Sorbus commixta HEDL cortex water extracts on expression of melanogenic enzyme proteins including tyrosinase, tyrosinase-related protein 1 (TRP-1) and tyrosinase-related protein 2 (TRP-2) in B16BL6 cells. Inhibitory effects of Sorbus commixta HEDL cortex onto free radical generation were determined by measuring DPPH and hydroxyl radical scavenging activities. Our results indicated that Sorbus commixta HEDL cortex water extracts effectively inhibited free radical generation. In DPPH radical scavenging activity, Sorbus commixta HEDL cortex water extracts had a potent anti-oxidant activity in a dose-dependent manner. They significantly inhibited tyrosinase activity in vitro and in B16BL6 melanoma cells. Also, Sorbus commixta HEDL cortex suppressed the expression of tyrosinase, TRP-1 and TRP-2 in B16BL6 melanoma cells. These results show that Sorbus commixta HEDL cortex inhibited melanin production on the melanogenesis. The underlying mechanism of Sorbus commixta HEDL cortex on whitening activity may be due to the inhibition of tyrosinase activity and tyrosinase, TRP-1, TRP-2 expression. We suggest that Sorbus commixta HEDL cortex may be contain new natural active ingredients for antioxidant and whitening cosmetics.
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