The purpose of this study was to investigate the effects of dietary Indongcho(L. japonica Thunb) powder on blood glucose, serum lipid levels and antioxidative enzymes in normal and streptozotocin(STZ)-induced diabetic rats. Four groups of rats(3-week-old inbred Sprague-Dawley male rats) were normal rats fed control diet(NC), diabetic rats fed control diet(DC), normal rats fed Indongcho powder diet(NI), and diabetic rats fed Indongcho powder diet(DI). Diabetes was induced by single injection of streptozotocin(60mg/kg B.W., i.p.). The animals were fed ad libium each of the experimental diet for 5 weeks. Food and water intakes were determined everyday. Blood glucose and serum total cholesterol levels were determined every week. After 5 weeks the animals were sacrificed and activities of antioxidant enzymes and lipid peroxidation products were determined in their liver and kidney homogenates. We also determined serum concentrations of total lipid(TL), total cholesterol(TC), triglycerides(TG) and HDL-cholesterol(HDL-C). Blood sugar and water intake were higher in diabetic group(DC and DI group) than normal group(NC and NI group) and were not significantly decreased by dietary Indongcho intake. Body weight gain and FER(feed efficiency ratio) were reduced by STZ treatment. But, Final body weight was recovered by Indongcho-contained diet. LHR(LDL-cholesterol/HDL-cholesterol) of the DI g re up was significantly lower than the other experimental groups(NC, NI and DC groups). The hepatic glucose 6-phosphatase(G6Pase) activity of the groups fed Indongcho diet(NI and DI group) was lower than the groups fed control diet(NC and DC group) and the G6Pase activity of NI group was recovered to the normal levels(p<0.05). However, The glutathione peroxidase(GPx) and glutathione reductase(GR) activities in liver and G6Pase activity in kidney were not statistically different between the control and diabetic control groups. Renal GST activity of the DI group was recovered by Indongcho intake. In conclusion, these results confirm oxidative stress in the liver and kidney of rats with STZ diabetes and antioxidative effect of Indongcho.
The purpose of this study was to isolate the probiotic lactic acid bacteria, and verify the possibility of the final selection strain as probiotic material. For screening of biogenic amines non-producing microorganisms, 42 lactic acid bacteria were isolated from various berries, extract and vinegar grown in Sunchang. Isolates were investigated for various physiological activities such as extracellular enzyme, antimicrobial and antioxidant activities, and 5 isolates were firstly screened. SBB07 was finally selected by analyzing the biogenic amine, and named Lactobacillus brevis SBB07 by 16S rRNA sequencing analysis. Next, SBB07 was assayed for their survival ability when exposed to acidic and bile conditions as well as heat and antibiotic resistance. As a result, SBB07 showed more than 86% and 54% higher survival rate in acidic condition at pH 2.0 and bile resistance with 0.5% oxgall. In addition, SBB07 showed a survival rate of more than 113% in $60^{\circ}C$, and also confirmed that it has resistant to various antibiotics. As a result of confirming the possibility of prebiotics, SBB07 showed the best utilization of GOS as a prebiotic substrate, and utilization of FOS and inulin were also high. These results suggest that SBB07 have good potential for application as probiotic lactic acid bacteria.
This study was carried out to investigate activity difference in the superoxide dismutase (SOD) and peroxidase (POD) of tomato callus transformed with Agrobacterium containing the GUS gene. Than those of other two tomato cultivars, the hypocotyl explant of JA101 was shown to have higher POD and SOD specific activity of 23 unit/mg protein and 2,156 unit/mg protein, respectively. Relatively high frequency of callus formation was obtained from the hypocotyl explant on MS medium containing 1 mg/L 2,4-D for 30 days and its POD(47 unit/mg protein) and SOD (95,786 unit/mg protein) specific activities were higher than other 2,4-D concentration. The hypocotyl explant and callus cocultivated with Agrobacterium for 72 hours were transferred to MS medium supplemented with 1 mg/L 2,4-D, 30 mg/L kanamycin, 30 g/L sucrose and 4 g/L Gelrite. The hypocotyl explants transferred to the medium formed callus with 45.5% effeciency after 8 weeks. The transformation efficiency confirmed by GUS assay was 21.6%. POD specific activity of the transformed callus (54 unit/mg protein) were somewhat lower than the non-transformed callus (64 unit/mgg protein) and SOD specific activity of the transformed callus (30,300 unit/mg protein) were also lower than the non-transformed callus (37,077 unit/mg protein). However there was no significant difference in POD and SOD isozyme patterns between the transformed and the non-transformed calluses. From these results, it revealed that there was no difference of antioxidant enzyme activities between the transformed callus and the non-transformed callus in tomato.
Objectives: The purpose of this study is to determine the stimulatory effects of herbal medicines extracts on cytokines release of immune response in immune cells, RAW 264.7 and TK-1 cell. Methods: In a total of 18 extracts, 9 water extracts and 9 ethanol extracts, of herbal medicines, the quantities of polyphenolic compounds were measured and anti-oxidation activities were determined by colorimetric assay. The herbal medicine extracts were treated on RAW 264.7 and TK-1, respectively, and then the releasing changes of tumor necrosis factor-${\alpha}$ ($TNF-{\alpha}$), interleukin-6, and interleukin-10 from both immune cells were determined by the enzyme-linked immunosorbent assay. Results: The polyphenol contents were measured to be 1.56~0.64 mg/g of solids in the two types of extracts with 9 kinds of herbal medicines, while antioxidant activities were found to be 95.62~31.46% as compared with ascorbic acid control. In RAW 264.7 cells treated with herbal medicines extracts, the secretion of $TNF-{\alpha}$ increased to 1.31~1.18 fold, and the amounts of IL-6 were 68.4~97.9% compared with the control group treated with LPS alone. In particular, the secretion amount of anti-inflammatory cytokine IL-10 was suppressed by treatment using herbal medicine extracts. In the case of TK-1 cells, $TNF-{\alpha}$ secretion was suppressed according to the concentrations of herbal extract. The released amounts of IL-10 were shown at 10~40 pg/ml, and increased in a dose-dependent manner. Conclusions: Herbal medicines extracts act on macrophages inducing the secretion of inflammatory cytokine, thereby enhancing the activity of innate immunity. When acting on T cells involved in adaptive immunity, the secretion of anti-inflammatory cytokine is increased to induce the inhibition of the innate immune response.
In this study, the growth characteristics of an agar-degrading bacterium isolated from seawater samples collected from Yeongheungdo, Incheon, and the characteristics of its agarase were analyzed. The 16S rRNA gene sequence of the isolated strain was 95% similar to that of the genus Agarivorans, and thus the isolated strain was named Agarivorans sp. HY-1. When Agarivorans sp. HY-1 was cultured in a marine broth 2216 medium at 27℃ and 250 rpm, it showed maximum growth on day 1 and showed maximum enzymatic activity on day 2. A crude enzyme solution was prepared from secreted agarase in the culture medium. The extracellular agarase of the Agarivorans sp. HY-1 strain showed maximal activity at 40℃ and pH 7.0 (20 mM Tris-HCl) with 591.91 U/l. The agarase exhibited relative activities of 64, 91, 100, 97, 89, and 60% at 20, 30, 40, 50, 60, and 70℃, respectively. At pH 5, 6, 7, and 8, the relative activities were 79, 95, 100, and 55%, respectively. Furthermore, the agarase exhibited >86% residual activity at 20, 30, and 40℃ for 2 hr and >44% residual activity at 50℃ after 2 hr. A TLC analysis confirmed that Agarivorans sp. HY-1 produced α-agarase. As the degradation products of α-agarase have anticancer and antioxidant effects, Agarivorans sp. HY-1 and its agarase may well prove useful.
Journal of the Society of Cosmetic Scientists of Korea
/
v.47
no.4
/
pp.281-287
/
2021
In this study, we analyzed the cosmetic applicability of extract from snow tea, native to Lijiang, Yunnan-province, China. After confirming the species as N. grossedentata through DNA analysis of Lijiang snow tea, experiments were conducted using representative tea, green tea, and a representative control group for each efficacy analysis. Both teas were extracted using 70% (v/v) ethanol aqueous solution. The polyphenol content in the Lijiang snow tea extract (gallic acid equivalent, 23.9 ± 3.2 mg/mL) was higher than that in green tea extract (16.4 ± 2.3 mg/mL). In contrast, the antioxidant (Radical scavenging, IC50 104 ㎍/mL), tyrosinase enzyme inhibitory (whitening agent, IC50 40.7 ㎍/mL), and Escherichia coli growth inhibitory (preservative) activities (IC50 2.85 mg/mL) were analyzed based on the solid content in the extract, and it was confirmed that the activities of Lijiang snow tea extract were superior to those of green tea extract (radical scavenging, IC50 234 ㎍/mL. It also showed similar efficacy to previously used active substances such as antioxidants (vitamin C, IC50 108 ㎍/mL), whitening agents (vitamin C, IC50 80㎍/mL), and preservatives (methylparaben, IC50 4.35 mg/mL). However, green tea was found to be better in collagenase inhibition activity (anti-wrinkle). Through this study, the cosmetic application potential of Lijiang snow tea is high.
In Seong Yoon;Sang in Kang;Jin-Soo Kim;In Sang Kwon;Hyeung Jun Kim;Min Soo Heu
Korean Journal of Fisheries and Aquatic Sciences
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v.56
no.1
/
pp.7-20
/
2023
Boil-dried concentrate (BDC) and steam-dried concentrate (SDC) were prepared from olive flounder Paralichthys olivaceus roe using the cook-dried process, and their food functionality and in vitro bioactivity were examined. The buffer capacity of BDC and SDC was found to be stronger in the alkaline region than in the acidic region, and the buffer capacity of SDC was superior to that of BDC. The water holding capacities of these concentrates were 7.6 and 7.4 g/g protein, respectively, both of which were significantly lower than that of freeze-dried concentrate (FDC). The solubility of BDC (13.4%) and SDC (12.7%), foaming capacity of BDC (107.7%) and SDC (110.6%), and oil-in-water emulsifying activity index of BDC (7.7 m2/g) and SDC (9.7 m2/g) were all significantly lower than the corresponding values for FDC (P<0.05). The lower food functionality of BDC and SDC compared with FDC can be attributed to the high-temperature denaturation of proteins during the cook-dried process. The 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid radical scavenging activities (IC50) of SDC (2.5 mg protein/mL) was 60.4 ㎍/mL, and the angiotensin I converting enzyme inhibitory activity was 80.9%. Olive flounder roe concentrates have good antioxidant and antihypertensive activities, and can be used as materials or ingredients in the processing of seafood and other foods to enhance protein contents and food functionality.
Lee, Hee Jae;Lim, So Young;Kang, Min-Gyung;Park, Jeongjin;Chung, Hyun-Jung;Yang, Soo Jin
Journal of the Korean Society of Food Science and Nutrition
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v.44
no.4
/
pp.491-496
/
2015
The purpose of this study was to assess the antioxidant, anti-inflammatory, and immuno-enhancing effects of Daebong persimmon (DP) and Bansi (BS) in vivo. Two types of astringent persimmons (DP and BS) were used for this experiment. C57BL/6J mice were assigned to the following groups: 1) lean control, 2) high-fat diet control (HF), 3) A region DP (3% wt/wt) with HF diet (A-DP), 4) B region DP with HF diet (B-DP), 5) C region DP with HF diet (C-DP), 6) D region BS with HF diet (D-BS), and 7) E region BS with HF diet (E-BS). All mice were sacrificed after 4 weeks of treatment, after which blood and tissues were collected. Antioxidant enzyme activities, inflammatory markers, and immune factors were evaluated. DP and BS treatments did not alter food intake or body weight, compared with HF. Administration of B-DP increased catalase activities in serum. Hepatic levels of malondialdehyde, a product of lipid peroxidation, were significantly lower in A-DP mice than in the HF group. A-DP had down-regulatory effects against inflammation induced by high-fat diet feeding, as shown by significant reduction of interleukin (IL)-$1{\beta}$, IL-6, and tumor necrosis factor-${\alpha}$. Additionally, A-DP treatment exerted an immuno-stimulatory effect, as shown by increasing levels of immunoglobulin G. DP treatment improved the level of insulin-like growth factor-1. These results indicate that DP has beneficial health effects on oxidative stress, inflammation, and immunity in vivo.
Journal of the Society of Cosmetic Scientists of Korea
/
v.34
no.4
/
pp.287-301
/
2008
In order to develop a new depigmenting agent, extracts were obtained from 60 native plants and their antimelanogenic activities were screened by evaluating the inhibitory effect on tyrosinase which is a major enzyme responsibles for the melanin synthesis. The extracts of Trichosanthes kirilowii fruits, Phyllostachys bambusoides inner films (BIF), Clerodendrum trichotomum leaves, and Acer okamotoanum leaves showed relatively high inhibitory effect on tyrosinase and their $IC_{50}$ values were $50{\sim}100{\mu}g/mL$. The extract of BIF inhibited melanin synthesis of B16F10 melanoma cells by 52%, which was the highest among those of various extracts. Furthermore, the effect of BIF extract is 10% higher than that of arbutin (42%), a popular depigmenting agent in Korea. Ten compounds having antimelanogenic activity were isolated from the BIF extract by solvent extraction and chromatography. These compounds were identified as phenolic derivatives: SM701, SM702, SM703, and BPR211 were hydroquinone derivatives; SM707 a gallic acid derivative; SM704, SM705, SM706, SM708 and SM709 ferulic acid derivatives. The free radical scavenging activities of these compounds were measured and compared to those of hydroquinone and vitamin C. The $SC_{50}$ values scavenging 50% DPPH of SM702 and SM709 were $60{\sim}70{\mu}M$ similar to that of hydroquinone and those of SM701 and SM708 were $30{\sim}40{\mu}M$ slightly lower than that of vitamin C. These results suggest the presence of components having high antioxidant activity in the BIF extract. The SM709, identified as 1,2-O-diferulylglycerol, inhibited the activities of tyrosine hydroxylase and dopa oxidase by 18 and 60%, respectively. The SM709 also inhibited the melanin synthesis of B16F10 melanoma cells by 62% and this was the highest antimelanogenic activity among those obtained from the various purified compounds. Therefore, antimelanogenic activity of the BIF extract was concluded to be due to both inhibition of DOPA oxidase and antioxidant activity.
Sung, Sang Yeop;Lee, Yu-Mi;Kim, Sang Hoon;Ha, Bo-Geun;Kang, Si-Yong;Kim, Jin-Baek;Kim, Dong Sub
Horticultural Science & Technology
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v.31
no.4
/
pp.490-495
/
2013
Two chrysanthemum varieties, 'ARTI-purple' and 'ARTI-queen', were chronically irradiated with doses of 30, 50, 70, and 100 Gy for four weeks in gamma-phytotron, a long term irradiation facility. We investigated the growth, responses of antioxidant enzymes (ascorbate peroxidase, APX; catalase, CAT; peroxidase, POD; superoxidase dismutase, SOD) and malondialdehyde (MDA) contents under different doses of chronic-irradiation. The five plant growth measurements including plant height, number of leaves, internode length, stalk diameter and leaf thickness were investigated immediately after four week irradiation. The plant height (p<0.001), internode length (p<0.01), the number of leaves (p<0.001) and stalk diameter (p<0.05) were significantly decreased an increasing doses of gamma-ray. Among them, especially, the internode length was remarkably decreased showing the RD50 (Reduction Dose 50) at approximately 65 Gy. The antioxidant response after four weeks of recovery period, ascorbate peroxidase (APX) (p<0.01), superoxide dismutase (SOD) (p<0.01) and peroxidase (POD) (p<0.001) were significantly increased with an increasing dose of gamma-ray. And malondialdehyde (MDA) (p<0.01) contents showed the significant increase at the 70 and 100 Gy which means the oxidative stress was lasting for a considerable period. In this study, the 50 Gy irradiation as optimal dose showed higher growth than the $RD_{50}$, it also showed insignificant differences on the antioxidant responses and MDA contents. However, the 100 Gy dose showed lower growth than $RD_{50}$.
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