Yoo, Seul Ki;Park, Seon Kyeong;Kang, Jin Yong;Kim, Jong Min;Park, Sang Hyun;Kwon, Bong Seok;Lee, Chang Jun;Kang, Jeong Eun;Park, Su Bin;Lee, Uk;Heo, Ho Jin
Korean Journal of Plant Resources
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v.30
no.4
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pp.352-363
/
2017
To investigate skin-whitening effect of Adenophora triphylla var. japonica sprout extract, antioxidant activity, inhibitory effect on tyrosinase and melanin synthesis in B16/F10 melanoma cell were examined. Total phenolic content (246.25 mg GAE/g) and total flavonoid content (303.94 mg RE/g) of ethyl acetate fraction from Adenophora triphylla sprout (EFAT) showed the highest contents than other fractions (n-hexane, chloroform and distilled water). Antioxidant activities of EFAT has been evaluated using ABTS, DPPH radical scavenging activities, FRAP and inhibitory effect of lipid peroxidation. EFAT showed excellent radical scavenging activity and inhibitory effect on MDA production. Inhibitory effect of tyrosinase as a major enzyme of melanin synthesis was also measured. In these results, EFAT showed higher inhibitory effect against L-DOPA (51.27%) than L-tyrosine. $IC_{50}$ value on ${\alpha}-glucosidase$ was $41.93{\mu}g/ml$. In B16/F10 melanoma cells, EFAT inhibited melanin synthesis at $200{\mu}g/ml$ concentration (about 42% decrease). Finally, main physiological compounds of EFAT were identified as a rutin and a chlorogenic acid using high performance liquid chromatography.
Background : Acute pulmonary injury by paraquat are caused by multiple mechanisms including direct injury with oxygen free radicals and several mediators released from inflammatory cells. In order to clarify whether vitamin E could reduce tissue damages induced by intraperitoneal administration of paraquat and to investigate the pathogenetic mechanisms of paraquat-induced pulmonary injury, vitamin E as a free radical scavenger was administered. Method : Rats were divided into three groups (group 1 : control, group 2 : paraquat treated group, group 3 : paraquat and vitamin E treated group). Animals were sacrificed on day 1, day 2, day 3, and day 8 after the administration of saline, paraquat, or paraquat/vitamin E. Results : Treatment with vitamin E decreased the death rate of rats treated with paraquat. Comparing with control group ($1.37{\times}10^6/ml$), mean total cell counts recovered from the lavage fluid from animals treated with paraquat($1.65{\times}10^6/ml$) were increased(p=0.06). Magnitudes of increment of the total cell counts on the Day 8 in the vitamin E treated group were smaller than those of the animals treated with paraquat alone. The neutrophils began to appear in significant amounts in the lavage fluid on Day 8 after the administration of paraquat(37.0+12.7%). A significant decreasing neutrophil concentration at Day 8 was observed in the paraquat/vitamin E treated group(20.6+13.4%). Histologically the degree of pulmonary fibrosis was most prominent in the paraquat treated group while diffuse alveolar damage was continuously observed in the paraquat/vitamin E treated group and extensive interstitial lymphocytic infiltration was seen in the paraquat/vitamin E treated group. The paraquat/vitamin E treated group showed the less histologic changes. Conclusion : In this study vitamin E acting as a scavenger of neutrophil-derived free radicals and suppressant of lipid peroxidation, seemed to be the effective antioxidant in the inhibition of paraquat-induced pulmonary injury.
The chemical components of Korean paprika according to cultivars were investigated and analyzed to provide basic data for food materialization and processing. Nitrogen free extract contents of President, Special and Fiesta were 6.64, 6.22 and $6.01\%$ respectively. The contents of crude lipid and crude fiber in the Special, President and Fiesta were similar. Mineral components of paprika were rich in $K(83.41\-152.98\;mg\%),\;Mg(28.66\~39.46\;mg\%)\;and\;Mn(10.34\~18.96mg\%)$. Among the cultivars of paprika, K content had a slightly higher level in the President than those of Special and Fiesta. The major free Sugars of paprika were glucose $(1.36\~1.45\%)$ and fructose$(0.06\~1.53\%)$, respectively. The contents of total amino acids in paprika were $1,168.08\;mg\%$ in the Special, $1,112.97\;mg\%$ in the President and $874.79\;mg\%$ in the Fiesta. The major amino acids in the paprika were lysine, aspartic acid and glutamic acid Abundant organic acids of paprika were tartaric $(2.34\~4.32\;mg\%)$, succinic $(2.01\~2.42\;mg\%)$ and malic acids $(0.67\~1.72\;mg\%)$. Eight fatty acids in paprika were identified and the major fatty acids were stearic $(15.11\~34.68\%)$ and linoleic acids $(32.12\~60.36\%)$. The contents of ascorbic acid in paprika were $263.45\;mg\%$ in the Special, $284.24\;mg\%$ in the President and $206.34\;mg\%$ in the Fiesta. Total phenolics and carotenoid contents were higher in President cultivar than any other cultivars.
Kim, Dongwook;Gil, Juae;Kim, Hee-Jin;Kim, Hyun-Wook;Park, Beom-Young;Lee, Sung-Ki;Jang, Aera
Journal of Life Science
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v.23
no.12
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pp.1477-1485
/
2013
The aim of this study was to evaluate changes in the meat quality and natural di-peptide (carnosine and anserine) content in the loin and ham cuts of female, Korean Native Black Pigs (KNBP) during cold storage for 10 days. The pH value of the loin and the ham cuts increased with an increase in the number of storage days. The lightness ($L^*$) of the loin cuts did not show any significant difference; however, the lightness of the ham cuts was decreased at storage day 10 (p<0.05). The redness ($a^*$) of the ham was higher than the redness of the loin (p<0.05) during the entire 10-days of storage. The water holding capacity of the loin was decreased from 78.5% to 67.9% during storage (p<0.05). The total number of microorganisms and coliforms was increased in both the loin and the ham during storage, and the initial total microbial contamination was higher in the ham cut (5.16 log CFU/g) than it was in the loin cut (4.87 log CFU/g). The carnosine content of the loin and the ham was in the range of 1.12-1.35 mg/ml and no significant difference was found between those two pork cuts. The anserine content of the ham cut was higher than it was in the loin cut until storage day 3. The ratio of carnosine and anserine increased with an increase in the number of storage days and it ranged from 27.6-59.7 for the loin cut and from 20.1-51.2 for the ham cut. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity of the loin and the ham cuts significantly decreased as the number of storage days increased. For both types of KNBP cuts, lipid oxidation and volatile basic nitrogen significantly increased after storage day 5. These results found that natural antioxidants carnosine and anserine decreased as the number of storage days increased, and anserine decreased more rapidly than carnosine (p<0.05).
In this study, agronomic characteristics and fatty acid composition of 121 flax (Linum usitatissimum L.) germplasms were analyzed. The flax germplasms had a fairly short growth period of 75-95 days. The plant height at maturity varied from 52 to 124 cm. The flower color varied from white to lilac and even purple. Early flowering flax germplasms had white flowers and were resistant to lodging. In early flowering flax germplasms, all agronomic characteristics, including growth period, plant height, branch number per plant, stem diameter, number of capsules per raceme, seed number per capsule, 1000-seed weight, and seed yield, were decreased. The average fatty acid composition of 121 flax germplasms comprised palmitic acid (5.3%), stearic acid (4.3%), oleic acid (29.7%), linoleic acid (13.1%) and linolenic acid (46.4%). The total content of unsaturated fatty acids ranged from 84~94% with an average of 88%. Among the fatty acids, linolenic acid (omega-3) content was the highest with a range of 36~54%. In five selected flax germplasms (Hollandia 1803, Red son, C & F Res Br 1767, Wiera, and Ireland 1657) with high linolenic acid (${\geq}51%$), total lipid and protein contents were 30~36% and 5.4~6.9%, respectively. Overall, flax can practically be adoptable into cropping systems in South Korea and utilized as a scenery crop, since flax has a short cultivation period with diverse flower colors.
Top parts of $Dendranthema$$zawaskii$ var. $yezoense$ (DZY) and $Cosmos$$bipinnatus$ (CB) are believed to contain substances with antioxidant effects and activity. Present experiments were undertaken to investigate an adequate and efficient extraction method which ensures the highest yield of antioxidant components. Extraction yield was 1.11-1.92 times higher by ultrasonic method than other methods in both species. By 45 minute ultrasonic extraction, total polyphenol contents reached the highest level, $80.70mg{\cdot}g^{-1}$ tannic acid equiv./DW in $Cosmos$$bipinnatus$ and total flavonoid contents $50.41mg{\cdot}g^{-1}$ naringin equiv./DW in DZY. DPPH radical scavenging activity was almost the same among extraction methods or slightly higher in reflux extraction. The highest DPPH radical scavenging was observed by reflux extract in CB ($RC_{50}=0.135mg{\cdot}mL^{-1}$). ABTS radical scavenging activity was the highest by 15 minute ultrasonic wave in DZY and CB, $RC_{50}=0.159mg{\cdot}mL^{-1}$ and $RC_{50}=0.139mg{\cdot}mL^{-1}$, respectively. High ferrous ion chelating effects were obtained by 30-minute ultrasonic wave in DZY ($RC_{50}=0.803mg{\cdot}mL^{-1}$). Extracts of top parts of DZY obtained by reflux method showed the highest inhibition effect against peroxidation of linoleic acid, and extract of CB obtained by ultrasonic for 45 minutes showed the highest inhibition effect. In conclusion, optimum extraction method should be adjusted according to plant species and antioxidant substances.
Hwangbo, Soon;Jo, Ik Hwan;Kim, Guk Won;Choi, Chang Weon;Lee, Sung Hoon
Journal of The Korean Society of Grassland and Forage Science
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v.33
no.4
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pp.281-289
/
2013
This study was conducted to investigate the effects of feeding seleniferous whole crop barley silage (WCBS) on the growth performance, blood and carcass characteristics, and tissue selenium deposition infinishing Hanwoo steers. A total of 20 growing Hanwoo steers were selected and assigned to one of the following feed groups: control (0.1 ppm Se), T1 (0.3 ppm Se), T2 (0.9 ppm Se), and T3 (0.9 ppm of inorganic Se). Five steers were allocated to each treatment group, and the trial lasted for 90 days. All experimental diets combined seleniferous and/or non-seleniferous WCBS up to a ratio of 30%. For the T3 diet, 0.9 ppm Se in the form of sodium selenite was added to the control diet. Dietary level and type of selenium did not affect feed intake and body weight gain. Blood total lipid and triglyceride concentrations were significantly (p<0.05) lower in the T2 group than in control. Blood immunoglobulin G concentration increased significantly (p<0.05) with increasing levels of dietary selenium; concentrations were significantly (p<0.05) higher in T2 and T3 than in control. Blood selenium concentration was the highest (p<0.05) in T2. No significant difference was observed in dressing rate, ribeye area, marbling score, meat color and fat color. Further, no association was found between levels and chemical form of dietary selenium and quality and quantity of meat. To the contrary, tissue selenium content in kidney, liver, and hind leg increased significantly (p<0.05) with increasing levels of selenium; however, feeding inorganic selenium did not introduce a significant increase in tissue selenium content of finishing Hanwoo steers. The results indicated that the selenium present in seleniferous WCBS was an effectively absorbable selenium source, suitable for increasing tissue selenium content in beef. Approximately 100 g of hind leg muscle from steers fed on the T2 diet met approximately 69% of the recommended daily selenium requirements.
The objective of this study was to determine the effects of residual nitrite contents, chitosan with different molecular weight and nitrite addition on emulsified sausage during cold storage. Six types of sausages were evaluated: control, 0.5% 50 kDa chitosan (T1), 0.5% 200 kDa chitosan (T2), 150 ppm nitrite (T3), 0.5% 50 kDa chitosan+150 ppm nitrite (T4), and 0.5% 200 kDa chitosan+150 ppm nitrite (T5). Each type of sausage was tested in triplicate and assigned to one of four storage periods: 0, 10, 20 and 30 days. As the storage time increased, the presence of chitosan and nitrite resulted in decreased residual nitrite value and increased pH (in control and T2), TBARS (thiobarbituric acid reactive substance) values, and total plate counts (TPC). Values for pH, TBARS, residual nitrite and total plate counts decreased significantly in response to the addition of chitosan and nitrite relative to the control (p<0.05). T5 was redder than the control (higher CIE$a^*$) at 30 d; however, no difference in the CIE $L^*$ and $b^*$ values was observed. T5 was significantly (p<0.05) more effective at delaying lipid oxidation when compared to the other treatment groups. T5 presented TPC that was significantly lower (p<0.05) than the other groups after three days of storage. In addition, the use of chitosan and nitrite in combination had much better antioxidant and antimicrobial effectiveness than other treatment groups. In conclusion, this study demonstrates that the addition of 0.5% 200 kDa chitosan and 150 ppm nitrite in combination with emulsified sausages tended to improve antioxidative and antimicrobial effects during storage when compared to other treatment groups.
Journal of the Korea Academia-Industrial cooperation Society
/
v.12
no.11
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pp.4940-4950
/
2011
cis-(3R,5R)-Atorvastatin Ca (1) used for hyperlipidemia have four stereomers. However, It is very difficult to prepare stereoselective stereomers. In this paper, the reduction of 3,5-diketo atorvastatin ester (3) was performed using $Me_4NHB(OAc)_3$ in acetic acid as a reductant and showed excellent stereoselectivity in the double reduction of 3,5-diketo atorvastatin ester (3). As a result, reduction of compound 3 by $Me_4NHB(OAc)_3$ was purely obtained with cis-(3R,5R)-atorvastatin ester (4) of 1.5% and trans-(3R,5S)-atorvastatin ester (5) of 98.5%. Also, cis-(3R,5R)-atorvastatin Ca (1) and trans-(3R,5S)-atorvastatin Ca (7) were used to determine efficacy in the treatment of liver damage and hyperlipidemia induced by a high-fat diet in rats and to study the performance of the January 2010 experient was conducted. As a result, total cholesterol (TC), high-density lipoprotein-cholesterol (HDL-c), low-density lipoprotein-cholesterol (LDL-c), and triglyceride (TG) levels of compound 1 and 7 groups were $93.0{\pm}0.5$, $43.5{\pm}0.8$, $40.4{\pm}1.4$, $45.6{\pm}0.9\;mg/d{\ell}$ and $110.0{\pm}0.7$, $33.3{\pm}0.6$, $65.8{\pm}1.9$, $54.8{\pm}1.2\;mg/d{\ell}$, respectively. Atherogenic index (AI) and cardiac risk factor (CRF) in compound 1 and 7 were $1.14{\pm}0.05$, $2.14{\pm}0.05$ and $2.31{\pm}0.06$, $3.31{\pm}0.06$, aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were $51.9{\pm}4.6$, $16.0{\pm}2.1\;IU/{\ell}$ and $75.8{\pm}4.4$, $35.1{\pm}9.7\;IU/{\ell}$. Taken together, while compound 1 treat against high-fat diet-induced hyperlipidemia by attenuating hepatic lipid depots and reducing oxidative stress, compound 7 group had a low curative effect on hyperlipidemia induced by a high-fat diet in rats. These findings suggest that new method about synthesis of stereoselective stereomers and indicate that it may consider using in a clinical trial.
Ha, Gi-Jeong;Lee, Yong-Ho;Kim, Nak-Ku;Shon, Gil-Man;Rho, Chi-Woong;Jeong, Hee-Rok;Heo, Ho-Jin;Jeong, Chang-Ho
Journal of agriculture & life science
/
v.46
no.4
/
pp.155-164
/
2012
The chemical components in different parts of Artemisia argyi was investigated to provide industrial possibilities as functional foods The analysis result of proximate composition in leaves, stems and roots of Artenisia argyi was substantially as follows. The crude protein contents were 19.87, 6.14 and 5.68%, the crude lipid contents were 4.56, 1.30 and 1.20%, the crude fiber contents were 16.80, 29.70 and 29.45%, respectively. The major mineral components in Artemisia argyi were potassium, calcium and magnesium. Contents of potassium and calcium in leaves were 4,270.24 and 617.64 mg/100 g, respectively, they were more than double the contents of root. Sucrose and glucose as main free sugars were detected in the leaves and roots. However, glucose and fructose were identified in the stem. Total amino acids showed 17 amino acids. Contents of total amino acid in the leaves was the highest as 4,864.11mg/100g, and the stems and roots showed 1,953.99 and 1,601.73mg/100g, respectively. The major amino acids in the leaves and stems were proline(963.91 and 407.52mg/100g) and aspartic acid(577.38 and 299.17mg/100g), respectively. Glutamic acid(206.34mg/100g) and arginine(193.23mg/100g) were main amino acids in the roots. The major fatty acids in all parts were linoleic acid($C_{18:2}$), behenic acid($C_{22:0}$), and palmitic acid($C_{16:0}$). Eupatilin(35.0mg/100g) and jaceosidin (107.63mg/100g) as physiological compounds contents were higher in leaves than other parts.
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