Cho, Young Ho;Byun, Tae Kang;Lee, Jong-Hwa;Lee, Gye Won
Journal of Life Science
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v.23
no.12
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pp.1525-1531
/
2013
Baegilju is a famous traditional Korean wine made over the course of 100 days. The physiological functionalities of Baegilju were evaluated using different tests. The spectrophotometric method was used to determine the total concentration of polyphenolics and flavonoids and DPPH and ABTS radicals. A nitrite scavenging assay was used to evaluate antioxidant activity. The fibrin plate method was used for fibrinolysis and to evaluate angiotensin I converting enzyme (ACE) inhibitory activity; finally, the colorimetric determination method was used to evaluate acetylcholinesterase (AChE) inhibitory activity. The total polyphenolic content of non-sterilized Baegilju and sterilized Baegilju were 391.59 ${\mu}g$ and 401.33 ${\mu}g$ tannic acid equivalents/ml, respectively; and the flavonoids contents were 284.75 ${\mu}g$ and 308.35 ${\mu}g$ quercetin equivalents/ml, respectively. Baegilju exhibited more excellent antioxidant activities (DPPH and ABTS radicals, nitrite scavenging activity) than did Cheongju. In addition, the fibrinolytic activity and AChE inhibitory activity were found to be higher in Baegilju than they were in Cheongju. The ACE inhibitory activity of non-sterilized Baegilju, sterilized Baegilju, and Cheongju were 23.62%, 19.99%, and 38.91%, respectively. Therefore, these results suggest that Baegilju has potential as an antioxidant agent and anti-thrombosis agent.
Kang, Byung Tae;Choe, Won Kyung;Park, Dong Cheol;Kim, Jong Kuk;Park, Mora;Kim, Sung Ok;Kim, Mi Ryeo
The Korea Journal of Herbology
/
v.29
no.2
/
pp.15-21
/
2014
Objectives : The purpose of this study was to investigate inhibitory effects of steamed Polygonatum odoratum extract (POE) on differentiation and adipogenesis in 3T3-L1 adipocytes. Methods : Polygonatum odoratum (P. odoratum) extract was extracted with ethyl acetate. Total phenolic and flavonoid contents in POE were measured for antioxidant activity. The spectrophotometric method was used to determine the DPPH and ABTS radical scavenging activity and ferric-reducing antioxidant potential (FRAP). MTT assay was examined for cell toxicity, oil red O staining was performed for intracelluar adipogenesis in differentiated 3T3-L1 adipocytes. Western blot analysis for measurement of CCAAT/enhancer-binding protein ${\alpha}$ ($C/EBP{\alpha}$), peroxisome proliferator-activated receptor${\gamma}$ ($PPAR{\gamma}$) and AMP-activated protein kinase (AMPK) expressions were performed. Results : The results revealed that POE has antioxidant activities. Contents of total polyphenolics and flavonoids were $50.83{\pm}1.52$ GAE mg/100g dry weight of POE and $17.05{\pm}2.47$ RE mg/100g dry weight of POE, respectively. DPPH radical scavenging activity, and FRAP in 10 mg/ml concentration were $92.1{\pm}0.6%$, $244.8{\pm}9.0{\mu}M$ Fe(II) and ABTS inhibition in 5 mg/ml concentration was $84.8{\pm}4.1%$. Treatment of POE in adipocytes inhibited the differentiation and adipogenesis of 3T3-L1 adipocytes compared to those of vehicle control. Additionally, protein expressions of $C/EBP{\alpha}$ and $PPAR{\gamma}$, major transcription factor for the adipogenic genes, were significantly decreased compared to those of vehicle control (p<0.05). Futhermore, phosphorylation of AMPK was increased in 3T3-L1 adipocytes treated with POE compared to that of vehicle control (p<0.05). Conclusions : we demonstrate that steamed P. odoratum extract (POE) has potentiating antioxidant activities, inhibits differentiation and lipid accumulation and also induces energy expenditure in adipocytes, which may contribute to antiobesity property.
The nutritive value and the effect of tannins on the utilization of foliage from three commonly used legumes, Acacia nilotica, Albizia procera, and Sesbania acculeata, were determined. Three mature rumen-fistulated bullocks were used to study in sacco degradability and twelve adult sheep were randomly allocated on the basis of live weight to 4 groups of 3 in each to study the in vivo digestibility of the foliages. In all foliages, the contents of crude protein (17 to 24% of DM) were high. Fibre was especially high in Albizia (NDF 58.8% of DM vs. 21% in Sesbania and 15.4% in Acacia). Contents of both hydrolysable (4.4 to 0.05%) and condensed tannins (1.2 to 0.04%) varied from medium to low in the foliages. Acacia contained the highest level of total phenolics (20.1%), protein precipitable phenolics (13.2%) and had the highest capacity to precipitate protein (14.7%). Drying in shade reduced the tannin content in Acacia and Albizia by 48.6 and 69.3% respectively. The foliages ranked similarly for each of the different methods used to estimate tannin content and activity. Acacia and Sesbania foliage was highly degradable (85-87% potential degradability of DM in sacco), compared to Albizia (52%), indicating a minimal effect of tannins in Acacia and Sesbania. Yet, in vitro, the tannins in the Acacia inhibited microbial activity more than those in Albizia and Sesbania. Following the addition of polyethylene glycol to neutralise the tannins, gas production and microbial growth increased by 59% and 0.09 mg RNA equiv./dg microbial yield respectively in the Acacia, compared to 16-17% and 0.06 mg RNA equiv./dg microbial yield in the other foliages. There was a trend for low in vivo apparent digestibility of N in the Acacia (43.2%) and Albizia (44.2%) compared to the Sesbania (54.5%) supplemented groups. This was likely to be due to presence of tannins. Consistent with this was the low N retention (0.22 and 0.19 g N/g NI) in sheep supplemented with Acacia and Albizia compared to that for the Sesbania (0.32). Similarly, a trend for poor microbial N yield was observed in sheep fed these foliages. Across the foliages tested, an increase in tannin content was associated with a reduction in ruminal fermentation, N digestibility and N retention. For overall nutritive value, Sesbania proved to be the superior forage of the three tested.
Journal of the Korean Society of Food Science and Nutrition
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v.44
no.8
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pp.1234-1240
/
2015
Taraxacum coreanum Nakai is a wild medicinal plant commonly consumed in Korea due to its health beneficial effects. In the present study, the contents of polyphenolics and flavonoids as well as antioxidative and anticancer activities of water extracts from different parts of T. coreanum Nakai were investigated for their use as functional foods. Extract yields of flower, leaf, and root were 30.25%, 34.53%, and 66.25%, respectively. Total polyphenols and total flavonoids contents of flower extract were 50.54 mg/g and 35.26 mg/g, respectively, which were much higher than any other parts. The electron donating abilities of flower, leaf, and root extracts were 91.04%, 88.22%, and 38.58%, respectively, at a concentration of 1.0 mg/mL. Cell viability of AGS for human gastric carcinoma, HCT-116 for human colon carcinoma, and A-549 for human pulmonary carcinoma showed the lowest values in flower extracts (40.34%, 39.56%, and 17.52%, respectively), indicating the highest cytotoxicity at a concentration of 400 mg/kg. Both antioxidative and anticancer activities of water extracts from all T. coreanum Nakai parts dose-dependently increased. These results provide preliminary data for the development of T. coreanum Nakai as an edible functional food material.
Journal of the Korean Society of Food Science and Nutrition
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v.37
no.6
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pp.744-751
/
2008
Physicochemical properties of Gugija-sugar leaching were investigated by adding sugar ratio on Gugija (Lycii fructus) raw fruit. Gugija were prepared by parboiling ($40{\sim}50$ sec at $85^{\circ}C$) and unparboiling. Gugija-sugar leaching were leached after preserving (5 months at $5^{\circ}C$) Gugija-sugar mixture (20, 40, 60, 80 and 100% sugar based on raw Gugija). The yield increased with UPRGSL-4 (Gugija-sugar leaching adding 80% sugar) having the highest yield at 77.5%; in contrast, total acidity decreased with increasing ratio of sugar. The main organic acids of raw Gugija are tartaric acid (0.63%), citric acid (0.57%), malic acid (0.54%) and succinic acid (0.3%). Citric acid and succinic acid decreased with increasing ratio of sugar but malic acid and tartaric acid increased on Gugija-sugar leaching. Polyphenolics and betaine content of unparboiling Gugija-sugar leaching decreased as increase ratio of sugar but in term of used Gugija amount, betaine content of each Gugija-sugar leaching was equal to raw Gugija. Also, parboiling Gugija-sugar leaching decreased quickly with increasing ratio of sugar, especially PRGSL-4 and PRGSL-5 (parboiling Gugija-80 and 100% sugar leaching, respectively) was not determined. 15 types of free amino acids were detected in raw Gugija; the total content was 601.6 mg/100 g and the highest amino acid among them was serine, 218.1 mg/100 g. In PRGSL-4 prepared by parboiling, 9 kinds of free amino acid were detected and the total content was 383.3 mg/100g. Also, in UPRGSL-4 (unparboiling Gugija-80% sugar leaching), all 17 kinds were detected and its total content was 705.7 mg/100 g.
Journal of the Korean Society of Food Science and Nutrition
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v.42
no.2
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pp.161-167
/
2013
The aim of this study was to investigate the protective effects of methanolic extract from perilla (Perilla frutescens Britt var. japonica) leaves (PLME) on oxidative injury from hydrogen peroxide ($H_2O_2$) in human HaCaT keratinoctyes. Cells were co-incubated with various concentrations (0~200 ${\mu}g/mL$) of PLME for 24 hr, and then exposed to $H_2O_2$ (500 ${\mu}M$) for 4 hr. $H_2O_2$ significantly decreased cell viability (p<0.05). However, PLME provided protection from $H_2O_2$-induced HaCaT cell oxidation in a dose-dependent manner. To further investigate the protective effects of PLME on $H_2O_2$-induced oxidative stress in HaCaT cells, the cellular levels of lipid peroxidation, and antioxidant enzymes (including superoxide dismutase (SOD), glutathione peroxidase (GSH-px) and catalase (CAT)) were measured. PLME decreased cellular levels of lipid peroxidation, and also increased the activities of antioxidant enzymes. In addition, the antioxidant activities of PLME were also determined by DPPH and hydroxyl (${\cdot}OH$) radical scavenging assay, and major antioxidant compounds of PLME were measured by colorimetric methods. DPPH and ${\cdot}OH$ radical scavenging activities of PLME increased in a dose dependent manner and was similar to the DPPH scavenging activity of ascorbic acid at 50 ${\mu}g/mL$; however PLME activities were stronger than ascorbic acid (50 ${\mu}g/mL$) in the ${\cdot}OH$ scavenging assay. The amounts of antioxidant compounds, including total polyphenolics, total flavonoids, and total ascorbic acid from PLME were $52.2{\pm}1.1$ mg gallic acid (GAE)/g, $33.7{\pm}4.7$ mg rutin (RUE)/g, and $17.0{\pm}0.5$ mg ascorbic acid (AA)/g, respectively. These results suggest that PLME has a strong free radical-scavenging activity and a protective effect against $H_2O_2$-induced oxidative stress in the keratinocytes.
Song, Seuk Bo;Ko, Jee Yeon;Kim, Jung In;Lee, Jae Saeng;Jung, Tae Wook;Kim, Ki Young;Kwak, Do Yeon;Oh, In Seok;Woo, Koan Sik
Korean Journal of Food Science and Technology
/
v.45
no.3
/
pp.317-324
/
2013
This study investigated the changes in physicochemical characteristics of adzuki bean (Vigna angularis var. nipponensis) tea depending on the variety and roasting times, for the development of functional foods. The levels of total polyphenol, flavonoids, and tannin contents were 12.72 mg gallic acid equivalent (GAE)/g, 3.01 mg catechin equivalent (CE)/g, and 3.56 mg tannic acid equivalent (TAE)/g, respectively, for the Jeolgangsung-ipat sample roasted for 16 min. The highest DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activity was 7.81 mg Trolox equivalent (TE)/g in Bulgeun-ipat sample that was roasted for 14 min. The highest total polyphenol content in the hot water-leached liqueur of adzuki bean tea was $26.55{\mu}g$ GAE/100 mL in Yungum-pat that was roasted for 12 min. The total flavonoids and tannin contents of Whin-ipat and Jeolgangsung-ipat roasted for 10 min were $15.10{\mu}g$ CE/100 mL and $14.60{\mu}g$ TAE/100 mL, respectively. The highest DPPH and ABTS (2,2'-azino-bis-3-ethylbenzo-thiazoline-6-sulfonic acid) radical scavenging activities of hot water-leached liqueur of adzuki bean tea were 488.72 and 728.25 mg TE/100 mL, respectively, in Yungumpat roasted that was for 12 min. The results of this study show that roasted adzuki bean tea has notable antioxidant activity and is considered to have significant health benefits.
In this study, the antioxidant compounds and antioxidant activities of adzuki beans were measured to evaluate their functional properties and to compare them to Daepung and Taekwang. Proximate compositions and mineral contents of the various adzuki beans were not significantly different. A high level of dietary fiber (14.81%) was found in Chilbopat. The extraction yields of Daepung and Taekwang were 38.70 and 34.61%, respectively; however the yields of the various adzuki beans were lower at 13.78-20.76%. The total polyphenol and flavonoid content of the various adzuki beans were 19.00-34.75 and 12.97-28.95 mg/g, respectively (Daepung: 14.40 and 3.96 mg/g, Taekwang: 10.7 and 2.61 mg/g). High levels of polyphenols (34.75 mg/g) and flavonoids (28.95 mg/g) were found in Miryang 6. The total anthocyanin and proanthocyanidin contents of the various adzuki beans ranged from 5.89-23.77 and 1.83-3.29 mg/g, respectively. A high level of total tocopherol content (7.66 mg/100 g) was found in Yungum-pat. High levels of ABTS radical (2.44 mg TEAC/mg extract residue) and DPPH radical scavenging activities (4.46 mg TEAC/mg extract residue) were found in Miryang 6. A significant correlation was also noted between free radical scavenging activity and polyphenolic compound content. The results of this study suggest that notable antioxidant activities in various adzuki beans could have significant health benefits.
In the current study, comparisons of Oenothera Biennis seed extracts with water, ethanol, methanol, and 70% ethanol in their total polyphenolics contents, anti-oxidant, anti-neurotoxicity, anti-cancer, and immune-modulatory activities were investigated. Compared with other extracts, those concentrations of total phenolics and flavonoids were the highest in MeOH extract (31.90 mg GAE/g and 20.66 mg QE/g). The radical scavenging and reducing power activities were dose-dependently increased by treatment of O. Biennis seed water, EtOH, MeOH, and 70% EtOH extracts. Furthermore, pretreatment of water, EtOH, and MeOH extracts significantly reduced glutamate-induced cytotoxicity in HT22 hipocampal neuron cells. In the case of cancer cells, MeOH extracts showed lower $IC_{50}$ values in HepG2 ($74.21{\mu}g/ml$), A549 ($188.24{\mu}g/ml$), MCF-7 ($186.42{\mu}g/ml$), and B16 ($101.80{\mu}g/ml$) than other extracts, where those water ($101.96{\mu}g/ml$) and EtOH ($788.39{\mu}g/ml$) extracts showed the lowest $IC_{50}$ activity in HT-29 and PC-3 cells, respectively. O. Biennis seed extracts did not show any cytotoxicity in RAW 264.7 macrophages at the concentration of $1-10{\mu}g/ml$, whereas 70% EtOH extract dose-dependently enhanced nitric oxide (NO) production in RAW 264.7 cells. Overall, we evaluated that various bioactive potentials of O. Biennis seed extracts which would relate with phenolic compounds abundance, thus these can be useful to future developments as functional food ingredients and natural medicines.
Total phenolics and flavonoids, and the antioxidant capacity of plum cultivar wines (Prunus salicina L. cv. Soldam and P. salicina L. cv. Formosa) were determined using spectrophotometric methods. The total phenolic and flavanoid contents of Soldam wine were $478.4\;{\pm}\;5.6\;mg$ GAE and $202.4\;{\pm}\;7.5\;mg$ CE per L,respectively, and in Formosa wine were $200.6\;{\pm}\;7.5\;mg$ GAE and $64.4\;{\pm}\;6.8\;mg$ CE per L, respectively. Neutral and acidic phenolics in Soldam wine were extracted with ethyl acetate and 0.01 N HCl, respectively. In the 1,1-diphenyl-2-picrylhydrazyl (DPPH) scavenging assay, neutral phenolics (64.5 EDA%) had $3{\sim}4$ times higher antioxidant activity than acidic phenolics (21.5 EDA%) and other related phenolic compounds such as chlorogenic acid (15.5 EDA%) and quercetin (24.6 EDA%) at a concentration of $100\;{\mu}g/mL$. The antiviral activities of neutral and acidic phenolics in Soldam wine were investigated in vitro using a virus-induced cytopathic effect (CPE) inhibition assay. Results showed that neutral and acidic phenolics at concentrations of $100\;{\mu}g/mL$ inhibited porcine epidemic diarrhea virus (PEDV) replication at rates of 78.12% and 58.37%, respectively. The inhibition rate of 10 g/mL neutral phenolics (69.42%) was higher than that of ribavirin as an antiviral reagent (57.86%). At concentrations of $100\;{\mu}g/mL$ or less, neutral and acidic phenolics of Soldam wine had no cytotoxic effect against vero cells.
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