• The Korean Journal of Food And Nutrition
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• v.33 no.2
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• pp.215-221
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• 2020

The purpose of this study was to investigate the protective effect on oxidative stress induced PC12 cells, and volatile flavor composition of essential oils derived from medicinal plant seeds- Gossypium hirsutum L. (G. hirsutum), Coix lachryma-jobi (C. lachryma-jobi) and Oenothera biennis (O. biennis). The essential oils were obtained by the solvent (hexane) extraction method from the seeds. The essential oils of the seeds were analyzed by the solid-phase micro-extraction gas chromatography mass spectrometry (SPME-GC/MS). The major compounds of G. hirsutum, C. lachryma-jobi and O. biennis were cyclonexanol (16.65%), β-asarone (14.29%) and ylangene (50.01%). The DPPH radical scavenging activity (IC₅₀) was the highest value of 8.52 mg/mL in the O. biennis. Additionally, IC₅₀ values of G. hirsutum and C. lachryma-jobi were 26.76 mg/mL and 36.81 mg/mL. For the oxidative stress on PC12 cells, we treated with hydrogen peroxide (H₂O₂). The pretreatment of oxidative stress induced PC12 cells with all the essential oils preserved or increased their cell viability and G. hirsutum and O. biennis attenuated the ROS generation (by 68.75% and 56.25% vs. H₂O₂ control). The results of this study suggest that the essential oils derived from medicinal plant seeds could be used as valuable back data as a natural essential oil material to prevent neurodegenerative diseases by protecting neuro-cells.

• Food Science and Biotechnology
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• v.18 no.1
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• pp.228-233
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• 2009

This study was conducted to examine the changes in the molecular structure and physiological activities of silk fibroin by gamma irradiation. The results of gel permeation chromatography and sodium dodecyl sulfate-polyacrylamide gel electrophoresis showed that the molecular weight of fibroin was increased depending upon the irradiation dose. Secondary structure of fibroin determined by using circular dichroism revealed that the ratio of $\alpha$-helix was increased up to 10 kGy and then decreased depending upon the irradiation dose. Whereas, the ratio of $\beta$-sheet, $\beta$-turn, and random coil were decreased and then increased with an alteration in the $\alpha$-helix secondary conformation. The 2.2-diphenyl-1-picryl-hydrazil (DPPH) radical scavenging activity of fibroin was increased by gamma irradiation at 5 kGy, but was decreased above 10 kGy depending upon the irradiation dose. Also, the inhibition activities of tyrosinase and melanin synthesis of fibroin were increased by gamma irradiation. These results indicated that gamma irradiation could be used as an efficient method to make fibroin more suitable for the development of functional foods and cosmetics.

• Food Science and Preservation
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• v.20 no.3
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• pp.342-347
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• 2013

In recent years, polyphenol-rich herbs, fruits and processed foods, which are made of plant origin, have attracted much attention due to their potential health benefits. Pomegranate (Punica granatum L.) is an important source of bioactive compounds and has been used to treat diseases because of its medicinal properties. This research was focused on characterizing Korea's national cultivar and a similar product from California, USA. To evaluate their bioactive compounds and pharmacological activities, their anti-oxidation and cancer inhibition properties, as well as their organic acid and free sugar contents, were investigated. The national cultivar had low total sugar and high organic acid contents, contrary to the imported product. The results showed that the peel of national cultivar had high polyphenol and ellagic acid contents compared to imported product. The free radical scavenging capacity was evaluated via 2,2-diphenyl-1-picrylhydrazyl (DPPH) and its positive correlation with the total polyphenol contents was found. The anti-cancer activity of methanol extracts revealed growth inhibition against the prostate cancer cell. These results signify that while pomegranate, national cultivar, is more sour than the imported product, its health benefits could be excellent. Also, the polyphenol compound content of the non-edible part (such as the peel and the seed) was higher than that of the juice. Thus, it is suggested that the byproduct of the juice extraction could be potentially used in other fields such as medicine or dietary agents.

• The Journal of Dong Guk Oriental Medicine
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• v.8 no.2
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• pp.97-113
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• 2000

The purpose of this study is to investigate the effects of bowontang on serum reactions of $CCl_4$- treated mouse. In this study, the experimental mouse were divided into three groups, normal, control, and sample. Under the same condition, the normal group was fed basal diet and water, the control group was injected with carbon tetrachloride ($CCl_4$, 0.6ml/kg) and fed a basal diet for 2 weeks, and the sample group was injected with carbon tetrachloride ($CCl_4$, 0.6ml/kg) and fed the bowontang extract (900mg/kg) for 2 weeks. It was shown that scavenging effect on DPPH radical was depended on concentration of the bowontang. And activities of GOT, GPT and ALP in blood serum of the sample group were significantly decreased as compared with the control group, respectively. Also, activities of LPO, GSH and catalase in the liver were significantly changed in experimental mice. In the liver of the sample groups, the activity of LPO was decreased as compared with control group, while activities of GSH and Catalase were significantly increased.

• Korean Journal of Veterinary Service
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• v.37 no.1
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• pp.51-58
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• 2014

The aim of the study was to investigate the anti-obesity effect of Coprinus comatus (CC) in high-fat diet-fed Zucker rat (fa/fa). Obesity was induced by feeding on high-fat diet (HFD) containing 60% kcal fat for 10 weeks, in which CC extracts were administrated through the gastrointestinal tract at a concentration of 200 mg/kg BW/day for 10 weeks. The total polyphenol and flavonoid contents of CC extracts were found to be $18.5{\pm}1.1mg$ of catechin equivalent/g, and $5.24{\pm}0.54mg$ of quercetin equivalent/g extract, respectively. The DPPH, ABTS, and hydroxyl radical scavenging activities of CC extracts were 15.34 %, 17.25%, and 16.18%, respectively. In animal study, CC administration significantly reduced the body weight, while there were no significant differences in the daily food intake between the HFD-fed Zucker rats and HFD plus CC-fed rats. CC treatment decreased epididymal and perirenal fat weights in HFD-fed Zucker rats. Significant decreases in the levels of triglyceride and total cholesterol in the serum and liver were observed in the CC-treated group compared with HFD-fed Zucker rats. Serum HDL-cholesterol levels in the CC-treated group were increased compared with the HFD-fed groups. Serum AST and ALT activities in the CC group were significantly lower than those of the HFD-fed group. Taken together, these data demonstrated that CC has potential in preventing high-fat diet induced obesity and is a good candidate for an anti-obesity agent.

• Journal of Korean Medicine Rehabilitation
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• v.25 no.4
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• pp.1-20
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• 2015

Objectives This study was intended to clarify the anti-inflammation and anti-oxidation effects of gamikyejakjimo-tang herbal acupuncture (GKHA) for osteoarthritis. Methods Osteoarthritis was induced by injection of MIA into right knee joint cavities of rats. Rats were divided into a total of 4 groups (n=8). The 4 groups were normal group, control group, positive comparison group and expeimental group. Indomethacin and GKHA were medicated for a total of 4 weeks. After that, functions of liver and kidney by AST, ALT, creatinine, BUN, DPPH and ABTS free radical scavenging activity, ROS (reactive oxygen species) production, NO (Total Nitric oxide), IL-$1{\beta}$, IL-6, TNF-${\alpha}$ production, weight changes in the hind legs of MIA-induced osteoarthritis rat, serum PGE2, TIMP-1, MMP-2, MMP-9, LTB4, hs-CRP, and white blood cells, neutrophils, lymphocytes, monocytes were measured. The volume of cartilage was observed by micro CT arthrography. H&E and Safranin-O staining were used to examine the injury of synovial tissue. Results 1. In the hind leg weight bearing measurement, level of weight was increased. 2. AST, ALT, BUN, creatinine were decreased. 3. The production of total white blood cell was decreased, and the production of neutrophils, lymphocytes, monocytes were significantly decreased. 4. The production of NO, PGE2, TIMP-1, MMP-2, MMP-9, LTB4 were significantly decreased, and the production of hs-CRP was also decreased but with no significance. 5. The cartilage volume was significantly increased. 6. In H&E staining and Safranin-O staning, the cartilage cell appeared to be proliferated, and proteoglycans appeared to be increased. Conclusions Based on the results above, Gamikyejakjimo-tang Herbal Acupuncture has anti-oxidation and anti-inflammation effects, which leads to suppressing the underlying causes and the progression of osteoarthritis.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.12
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• pp.1817-1826
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• 2014

This study investigated lipid profiles and antioxidant capacities of seven Korean rapeseed cultivars (Naehan, Tamla, Mokpo111, Yeongsan, Tammi, Hanla, and Mokpo68). The rapeseeds contained 29.3~33.2% of extracted lipid and major fatty acids were oleic, linoleic, and linolenic acids. The ratio of omega-6/omega-3 fatty acids was 2.20~3.68 with the highest in Hanla and lowest in Naehan. Glycolipid ranged from 0.21 g/100 g to 0.47 g/100 g. Phospholipid content was 0.55~1.15 g/100 g with the highest in Tammi and the lowest in Mokpo68, and the most common phospholipid was phosphatidylcholine. Tocopherol content was 9.45~15.11 mg/100 g in the order of ${\gamma}$ > ${\alpha}$ > ${\beta}$ > ${\delta}$-tocopherol, and Naehan contained the highest amount of tocopherols (P<0.05). Total phenol content (TPC) of rapeseed was 314.64~577.08 mg SAE/100 g. Tamla contained the highest TPC, and showed the highest antioxidant activity determined by 1,1-diphenyl-2-picrylhydrazyl free radical scavenging capacity and ferric reducing antioxidant power.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.12
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• pp.1954-1958
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• 2014

The feasibility of incorporating Cynanchi wilfordii powder as a value-added food ingredient in convenient food products was investigated using yanggaeng as a model system. C. wilfordii powder was incorporated into yanggaeng at 0, 2, 4, 6, and 8% weight amounts based on total weight of cooked white bean and C. wilfordii powder. pH increased significantly, and moisture content ranged from 45.40% to 47.40% with increasing levels of C. wilfordii powder (P<0.05). In terms of color, lightness, redness, and yellowness increased significantly (P<0.05) with increasing levels of C. wilfordii powder. Hardness significantly decreased with higher amounts of C. wilfordii powder (P<0.05). Total polyphenol content and DPPH radical scavenging activity were significantly influenced by addition of C. wilfordii powder, and they increased significantly as C. wilfordii powder concentration increased (P<0.05). Finally, consumer acceptance test indicated that the highest levels of C. wilfordii powder (8%, w/w) had considerable adverse effects on consumer preferences in general. In contrast, yanggaengs with moderate levels of C. wilfordii powder (2%, w/w) are recommended (with respect to overall preference score) to take advantage of the functional properties of C. wilfordii powder without sacrificing consumer acceptability.

• Food Science and Preservation
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• v.13 no.5
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• pp.596-602
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• 2006

This study was conducted to investigate the changes of major components and bioactivities of tea produce. The tea produce were made by various methods, with different degree of fermentation during manufacturing process. Except green tea, degrees of fermentation in Wizo Tea, Ilsoae Tea, and Hwang Tea were $5{\sim}10%,\;50{\sim}60%$ and $70{\sim}80%$ respectively. The result are as follows : The general component(moisture, crude ash, crude lipid, and crude protein) and the content of total polyphenol in tea products were not shown significant difference during the fermentation process. The content of caffeine in tea extracts decreased sharply as degree of fermentation of tea. In comparison of hunter values in tea extract, lightness was decreased as fermentation redness (a) was all (-), and yellowness(b) was increased sharpy with degree of fermentation. Radical scavenging activity using DPPH of tow kinds of tea was potent and decreased generally with degree of feimentation. Inhibitory effects of tea extracts against angiotensin I converting enzyme were also potent.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.20 no.1 s.32
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• pp.115-129
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• 2007

Objectives : This study was carried out to evaluate anti-oxidative, anti-microbial and anti-cancer effect for clinical application of Bibangtalmyungsan (BTS) Results : 1. The oxidative effects were measured by polyphenol, DPPH radical scavenging activity. BTS water extract was showed more effective than ethanol extract and also various solvent fractions from BTS water extract showed effective in the following order : ethyl acetate fraction > butanol fraction > hexane fraction ${\fallingdotseq}$ chloroform fraction ${\fallingdotseq}$ aqueous fraction 2. The results of anti-microbial effects were as follows. 1) Antibacterial activities of BTS extracts against Gram's negative and positive bacteria were ineffective 2) Antifungal activities of the BTS extracts against Aspergillus spp. , Trichohyton mentagrophyte KTCC 1077 were not effective. 3. The result of anti-cancer effects were as followings: 1) BTS ethanol extract was more effective than water extract against Caco-2, Calu-6, but it had cytotoxic effect against NIH3T3. 2) On the Caco-2, effective only in ethyl acetate $fraction(IC_{50}:$ 35.81 ${\mu}g/ml)$. 3) On the Calu-6, the most effective in ethyl acetate $fraction(IC_{50}:$ 189.65 ${\mu}g/ml)$ and effective In butanol $fraction(IC_{50}:$ 299.74 ${\mu}g/ml)$ and hexane $fraction(IC_{50}:$ 345.13 ${\mu}g/ml)$ 4) On the SUN-601, $IC_{50}$ value was within 80 ${\mu}g/ml$ in ethyl acetate fraction and hexane fraction. 5) On the HCT-1l6, the most effective in ethyl acetate $fraction(IC_{50}:$ 82.94 ${\mu}g/ml)$ and effective in hexane $fraction(IC_{50}:$ 374.56 ${\mu}g/ml)$. 6) On the AML-2/WT, the most effective in ethyl acetate $fraction(IC_{50}:$ 41.44 ${\mu}g/ml)$ and effective In hexane $fraction(IC_{50}:$ 303.01 ${\mu}g/ml)$. 7) On the NIH3T3, effective only in ethyl acetate $fraction(IC_{50}:$ 203.42 ${\mu}g/ml)$, but it was more ineffective than other cancer cells. Conclusion : These result suggest that BTS has antioxidative, antifungal activities and cytotoxic effects against Caco-2, Calu-6, SUN-601, HCT-116, AML-2/WT and NIH3T3, especially ethyl acetate fraction from water extract has more effective in antioxidative and anticancer effects.