This study aimed to investigate the drying characteristics of Caragana sinica Rehder flowers, which are basic data necessary for increasing utilization. The flowers were harvested in mid-April and dried at different hot-air temperatures (50-90℃), and the physicochemical properties of the dried flowers were analyzed. It was found that the drying rate was proportional to the air temperature. The visual color of dried flowers was relatively strong in green when dried at 50℃, while browning was relatively severe when dried at 90℃. The greenness (-a* value) of the mechanical color of the powder decreased with increasing temperature, and the yellowness (b* value) decreased with increasing temperature above 70℃. The soluble solids of the hot water extract were maintained at a certain level after increasing up to 70℃, and the pH decreased with increasing temperature. The total polyphenol contents tended to increase with increasing temperature, and DPPH radical scavenging activity did not show a significant change after increasing up to 70℃. These results suggest that the hot-air drying temperature had a significant effect on the physicochemical characteristics of the C. sinica flower. The appropriate hot-air drying temperature was judged to be less than 50℃ for maintaining the unique color, and approximately 70℃ considering the high hot-water extraction yield and antioxidant capacity.
Journal of The Korean Society of Integrative Medicine
/
v.12
no.1
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pp.1-10
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2024
Purpose: Lycopene is abundantly contained in Tomatoes and is known for diverse biological activities such as antioxidant, anti-inflammatory, and anticancer effects. In this study, the antioxidative potential of lycopene was investigated through the induction of hemeoxygenase (HO)-1 by nuclear factor-erythroid 2 p45-related factor2 (Nrf2) and upstream signaling molecules, mitogen-activated protein kinase (MAPK) and phosphoinositide 3-kinase (PI3K)/Aktin RAW 264.7 cells. Methods: The antioxidative potential of lycopene against oxidative stress and its molecular mechanisms were determined by the cell viability assay, intracellular reactive oxygen species (ROS) formation assay, and Western blot analysis in RAW 264.7 cells. Results: Lycopene treatment significantly attenuated tert-butyl hydroperoxide (t-BHP) induced intracellular ROS formation in a dose-dependent manner without any cytotoxicity. In addition, 50 µM of lycopene for 6 h treatment induced potent HO-1 expression and its transcription factor, Nrf2. MAPK and PI3K/Aktwere also analyzed due to their critical roles in the regulation of cellular redox homeostasis against oxidative damage. As a result, phosphorylation of extracellular regulated kinase (ERK) was significantly induced by lycopene treatment while the activated status of c-Jun NH2-terminal kinase (JNK), p38, and Akt, were not given any effect. To confirm the antioxidative mechanism of HO-1 mediated by ERK activation, each selective inhibitor was employed in a protection assay, in which oxidative damage occurred by t-BHP. Lycopene, SnPP, and CoPP treatments reflected accelerated HO-1 expression could be a protective role against oxidative damage-initiated cell death. A selective inhibitor for ERK significantly inhibited the lycopene-induced cytoprotective effect but selective inhibitors for other signaling molecules did not attenuate the rate of t-BHP-induced cell death. Conclusion: In conclusion, lycopene potently scavenged intracellular ROS formation and enhanced the HO-1 mediated antioxidative potential through the modulation of Nrf2, MAPK signaling pathway in RAW 264.7 cells.
Yeon-Su Koo;Tae-Jin Park;Jung-Hwan Kim;Seung-Young Kim
Journal of Applied Biological Chemistry
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v.66
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pp.39-45
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2023
Biorenovation is a biotransformation method that converts the structure of chemical compounds and natural product through biocatalytic metabolism of microorganism and could enhance biological effectiveness and mitigate cytotoxicity compared to its substrates. Althaea rosea L. has been used as oriental medicine and is known for physiological efficacies such as antiurolithiatic, anti-inflammatory, and anti-cancer activities. A. rosea L. callus, the plant tissue grown to protect its wound, has been reported to have antioxidant and whitening effects. However, mechanisms of its other activity such as inflammation have not yet been investigated. In this study, we extracted A. rosea L. callus (AR) and produced biorenovated AR (ARBR), and then analyzed anti-inflammatory effect in Lipopolysaccharide-induced RAW 264.7 macrophage at 50, 100, 200 ㎍/mL of ARBR. As a result of inhibition test of nitric oxide production, it was found that ARBR was superior to AR without apparent toxicity. Furthermore, ARBR significantly inhibited production of prostaglandin E2, inducible nitric oxide synthase, cyclooxygenase-2 and pro-inflammatory cytokines including Tumor necrosis factor-α, Interleukin-6, Interleukin-1β in a concentration-dependent manner. In conclusion, we suggest that ARBR could regulate the excessive inflammatory response to an appropriate level and be a promising material for functional cosmetics and pharmaceuticals.
Hyehyun Hong;Tae-Jin Park;Yu-Jung Lee;Byeong Min Choi;Seung-Young Kim
Journal of Applied Biological Chemistry
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v.66
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pp.213-220
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2023
The most common skin disease, acne, often occurs in adolescence, but it is also detected/observed in adults due to air pollution and drug abuse. One of the causative agents of acne, Cutibacterium acnes (C. acnes) plays a role in the development of skin acne by inducing inflammatory mediators. Torreya nucifera (TN) is an evergreen tree of the family Taxaceae, having well reported antioxidant, anti-proliferative, liver protection, and nerve protection properties. Improvement of these bioactive properties of natural products is one of the purposes of natural product chemistry and pharmaceuticals. We believe biorenovation could be one improvement strategy that utilizes microbial metabolism to produce unique derivatives having enhanced bioactivity. Therefore, in this study, the C. acnes-induced RAW264.7 inflammation model was used to evaluate the anti-inflammatory activity of the biorenovated Torreya nucifera product (TNB). The results showed improved viability of TNB-treated cells compared to TN-treated cells in the concentration range of 50, 100, and 200 ㎍/mL. At non-toxic concentrations, TNB inhibited the production of nitric oxide and prostaglandin E2 by suppression of inducible nitric oxide synthase and cyclooxygenase-2 protein expression. TNB also attenuated the expression of interleukin-1β, interleukin-6, interleukin-8, and tumor necrosis factor-α induced by C. acnes. Furthermore, TNB inhibited the nuclear factor-κB signaling pathway, a transcription factor known to regulate inflammatory mediators. Based on these results, this study suggests the potential of using TNB as natural material for the treatment of acnes and thus, supporting our postulation of biorenovation as an bioactivity improvement strategy.
Journal of the Korean Society of Food Science and Nutrition
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v.44
no.4
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pp.540-548
/
2015
This study examined the cultural characteristics and biological activities of fermented rice and amaranth with Bacillus subtilis KMKW4. These samples were made with various amounts of rice and amaranth [100:0 (R100), 90:10 (R90), 80:20 (R80), and 70:30 (R70)]. B. subtilis KMKW4 was used as starter for the fermentation, and its cultures at the lated logarithmic growth were inoculated for final concentration of 2% (v/v). Number of viable cells of fermented R80 (7.67 log CFU/mL) was greater than those of R100, R90, and R70 (7.48 log CFU/mL, 7.38 log CFU/mL, and 7.09 CFU/mL, respectively) during the fermentation period (120 h). Amylase activities of fermented R80 and R100 were 57.77 U/mL and 19.91 U/mL, respectively. Furthermore, amylase activities of fermented freeze-dried powders of R100 and R80 were 24.31 U/g and 9.12 U/g, respectively. Free sugar contents of R100 and R80 increased after fermentation, and that of R80 (5,454.15 mg/100 g) significantly increased compared to that of R100 (4,274.85 mg/100 g). The free amino acid content of R80 was higher than that of R100. DPPH and superoxide radical scavenging activities of 5 mg/mL of fermented freeze-dried powder (R80) were 44.21% and 89.76%, respectively. ACE inhibition rates and ${\alpha}$-glucosidase inhibitory activities were significantly higher in R80 than R100. This study suggested that fermentation of R80 might be a new potential source of antioxidant, anti-diabetic, and anti-hypertensive agents applicable to grain enzyme-containing foods.
Journal of the Korean Society of Food Science and Nutrition
/
v.44
no.8
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pp.1234-1240
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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.
Melanin synthesis is catalyzed by tyrosinase. To investigate the whitening effect of Hizikia fusiformis, fractions from ethanol extract of H. fusiformis were prepared by a systematic fractionation procedure with solvents such as methanol, hexane, butanol, and $H_2O$. The ethanol extract and its fractions were then subjected to evaluate the inhibitory effects on the tyrosinase activity and melanin synthesis in murine B16F10 melanoma cells. The ethanol extract and aqueous fraction exhibited a whitening effect with no cytotoxicity. The ethanol extract showed the highest whitening effect among the samples. The inhibitory effect of $100{\mu}g/ml$ of ethanol extract was higher than that of $10{\mu}g/ml$ of arbutin, but it was lower than that of $10{\mu}g/ml$ of kojic acid. Furthermore, the inhibitory effects of $100{\mu}g/ml$ of methanol, hexane, butanol, and aqueous fractions were similar to those of $10{\mu}g/ml$ of arbutin. The antioxidant activities were examined by comparing the results with that of ascorbic acid as a positive control. The ethanol extract and aqueous fraction showed relatively higher DPPH radical-scavenging activities compared with the other samples. Furthermore, $500{\mu}g/ml$ of ethanol extract and aqueous fraction diminished LPS-induced iNOS expression to 82 and 80%, respectively. These results suggest that ethanol extract and aqueous fraction of H. fusiformis could be used as cosmetic ingredients for whitening and skin protection effects.
Lee, Seung Hyeun;Yoon, Dae Wui;Jung, Jin Yong;Lee, Kyung Joo;Kim, Se Joong;Lee, Eun Joo;Kang, Eun Hae;Jung, Ki Hwan;Lee, Sung Yong;Lee, Sang Yeub;Kim, Je Hyeong;Shin, Chol;Shim, Jae Jeong;In, Kwang Ho;Kang, Kyung Ho;Yoo, Se Hwa
Tuberculosis and Respiratory Diseases
/
v.61
no.4
/
pp.374-383
/
2006
Background: Ethyl pyruvate (EP) is a derivative of pyruvate that has recently been identified by both various in vitro and in vivo studies to have antioxidant and anti-inflammatory effects. The aim of this study was to determine the effect of EP on lipopolysaccharide (LPS)-induced acute lung injury (ALI). Methods: 5 weeks old, male BALB/c mice were used. ALI was induced by an intratracheal instillation of LPS 0.5mg/Kg/$50{\mu}L$ of saline. The mice were divided into the control, LPS, EP+LPS, and LPS+EP groups. In the control group, balanced salt solution was injected intraperitoneally 30 minutes before or 9 hours after the intratracheal instillation of saline. In the LPS group, a balanced salt solution was also injected intraperitoneally 30 minutes before or 9 hours after instillation the LPS. In the EP+LPS group, 40mg/Kg of EP was injected 30 minutes before LPS instillation. In the LPS+EP group, 40mg/Kg of EP was injected 9 hours after LPS instillation. The TNF-$\alpha$ and IL-6 concentrations in the bronchoalveolar lavage fluid (BALF), and that of NF-$\kappa$B in the lung tissue were measured in the control, LPS and EP+LPS groups at 6 hours after instillation of saline or LPS, and the ALI score and myeloperoxidase (MPO) activity were measured in all four groups 24 and 48 hours after LPS instillation, respectively. Results: The TNF-$\alpha$ and IL-6 concentrations were significantly lower in the EP+LPS group than in the LPS group (p<0.05). The changes in the concentration of these inflammatory cytokines were strongly correlated with that of NF-$\kappa$B (p<0.01). The ALI scores were significantly lower in the EP+LPS and LPS+EP groups compared with the LPS group (p<0.05). In the EP+LPS group, the MPO activity was significantly lower than the LPS group (p=0.019). Conclusion: EP, either administered before or after LPS instillation, has protective effects against the pathogenesis of LPS-induced ALI. EP has potential theurapeutic effects on LPS-induced ALI.
Journal of the Korean Society of Food Science and Nutrition
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v.40
no.2
/
pp.253-258
/
2011
To increase utilization of Korean sweet persimmon, white breads containing sweet persimmon were prepared and those characterizations were evaluated. WB (white bread without persimmon), FPB (white bread containing 30% (w/w) persimmon flesh), and WPB (white bread containing 30% (w/w) whole persimmon) were prepared by straight dough method. Specific volumes of WB, FPB, and WPB were 3.51, 2.99 and 3.21 $cm^3$/g, respectively. Loss of bread of WB, FPB, and WPB were 9.81, 7.78, and 8.86%. With addition of sweet persimmon in bread, the lightness (L) was decreased, and the redness (a) and the yellowness (b) were increased. DPPH radical scavenging activity, one of antioxidant activity, of WB, FPB, WPB at concentration of 10 mg/mL was $12.39{\pm}0.135$, $14.57{\pm}0.01$, and $19.57{\pm}0.44%$, respectively. Total phenolic contents of WB, FPB and WPB were $177.05{\pm}5.52$, $185.26{\pm}0.79$, and $216.24{\pm}5.47$ mg GAE/g. Hardness of WB were 175.33 Dyne/$cm^3$, and the value was decreased in FPB and WPB. In sensory test, FPB acquired relatively high points in texture, flavor, taste, and overall acceptance.
Journal of the Korean Society of Food Science and Nutrition
/
v.42
no.11
/
pp.1717-1726
/
2013
Fermentation characteristics and health functionalities of kimchi by inoculating kimchi lactic acid bacteria (LAB) starters were studied. We manufactured single LAB starter kimchi (Lactobacillus plantarum pnuK, Lactobacillus plantarum 3099K, Leuconostoc mesenteroides pnuK), mixed LAB starter kimchi (Lb. plantarum pnu/Leu. mesenteroides pnuK, Lb. plantarum 3099/Leu. mesenteroides pnuK) with inoculum size of $10^6$ CFU/g, as well as naturally fermented kimchi (NK), and fermented them for 6 days at $15^{\circ}C$. The pH and acidity of the early phase of fermentation were not different, but kimchi with the starters showed rapid changes in the pH and acidity from 2 days of fermentation. As the fermentation progressed, the level of total aerobic bacteria and Lactobacillus sp. increased similarly with or without Lb. plantarum (LP) inoculation. However, the level of Leuconostoc sp. was high in kimchi inoculated with Leuconostoc sp. starter. In the sensory evaluation test, kimchi with starters received higher overall acceptability scores than those of NK; mixed starter added kimchi earned the highest score. In DPPH and hydroxyl radical scavenging activity, kimchi with the starters exhibited higher activity than that of NK. In the MTT assay of HCT-116 and HT-29 human colon cancer cells, NK showed inhibition rates of 63.4 and 51.9%, but LPpnuK achieved 77.1 and 68.8%, respectively. This study showed that inoculating starters in kimchi increased in vitro antioxidant and anticancer activities, and single starter (LP) added kimchi revealed higher functionality than the kimchi with mixed starter. Kimchis with the starters effectively up-regulated the gene expressions of the pro-apoptotic gene of Bax, but down-regulated Bcl-2. They promoted expressions of p53 and p21, and suppressed expressions of inflammation-related genes, iNOS and COX-2, compared with NK. Taken together, it is expected that using starters may help manufacture kimchi with improved sensory quality and health functionality.
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