• 한국약용작물학회:학술대회논문집
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• 2010.10a
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• pp.318-319
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• 2010

• 한국약용작물학회:학술대회논문집
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• 2010.10a
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• pp.334-335
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• 2010

• 한국약용작물학회:학술대회논문집
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• 2010.10a
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• pp.332-333
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• 2010

• 한국약용작물학회:학술대회논문집
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• 2012.05a
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• pp.11-12
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• 2012

• 한국약용작물학회:학술대회논문집
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• 2012.05a
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• pp.7-8
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• 2012

• Korean Journal of Medicinal Crop Science
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• v.18 no.4
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• pp.217-223
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• 2010

In this study, we investigated antioxidant capacity and determined the phenolic and flavonoid contents using each of various solvent conditions from fermented Rhus verniciflua stem bark (F-RVS). Each extracts displayed markedly similar content of extraction yield. However, M80 extract showed a significantly higher antioxidant activity in comparison to other extract investigated. M80 exhibited strong DPPH radical scavenging activity with $RC_{50}$ value of $10.5{\pm}1.4{\mu}g/m{\ell}$, reducing power value 1.04 Abs (concentration of 1 mg/$m{\ell}$), and anti-lipid peroxidation activity value of 94.6% (concentration of 10 mg/$m{\ell}$). M80 extract showed the high content of total phenolic (319.7 mg GAE/$m{\ell}$ extract) and total flavonoid (111.6 mg QE/$m{\ell}$ extract). Phenolic and flavonoid compounds showed significant relationship in DPPH radical scavenging ($R^2$=0.911 and 0.912, each extract) and reducing power ($R^2$=0.903 and 0.837, each extract) from fermented R. verniciflua stem bark. However, antilipid peroxidation activity ($R^2$=0.589 and 0.441, each extract) was not significant like DPPH radical scavenging and reducing power. Therefor the result indicated that the potential antioxidant activities and functional values were ovserved significantly at M80 solvent condition from the fermented R. verniciflua stem bark.

• Korean Journal of Plant Resources
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• v.33 no.2
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• pp.63-72
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• 2020

Fermented complex from garlic and nine medicinal plants were developed as a natural whitening material. Tyrosinase inhibition activity was determined and four active compounds were isolated. The nutritional components of fermented garlic complex (FGC) were analyzed to confirm the applicability as a functional food material. Tyrosinase inhibitory effect of FGC was 88.6%. Methanol extract was partitioned with EtOAc, n-BuOH and H₂O. From the EtOAc fraction (47 g), which showed the highest yield, active fractions were separated by repeated TLC, silica gel and ODS column chromatography to isolate active compounds. The chemical structures of the isolated compounds were analyzed by NMR and MS spectra. Phenylpropanoid compounds of 2,4,5-trihydroxy-benzenepropanoic acid (1) (1.9 mg) and 2,3,5-trihydroxy-benzenepropanoic acid (2) were confirmed. In addition, 2,4-dihydroxy-hydrocinnamic acid (3) (3.3 mg) and (+)sesamin (4) (6.1 mg) were isolated. These compounds will be useful as index compounds or functional compounds in FGC.

• Journal of Life Science
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• v.28 no.5
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• pp.547-554
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• 2018

Flaxseed (Linum usitatissimum L.), also called linseed and one of the raw materials for making linen, is rich in omega-3 fatty acids, vegetable estrogen, ${\alpha}$-linolenic acid, and dietary fiber. Studies on flaxseed have reported various additional effects, such as the inhibition of cholesterol, blood clotting, and tumor growth. In this study, we investigated the functional components of flaxseed fermented with lactic-acid bacteria. Lactic-acid bacteria was inoculated into heat-treated (roasted) flaxseed and fermented at $37^{\circ}C$ for 72 hr. The fermented flaxseed was extracted with 70% ethanol and the antioxidant effect of the fermented extracts according to the lactic-acid bacteria was analyzed. It was confirmed that the total polyphenol contents had expanded by about 1.5-8 times, and the total flavonoid contents had increased around 1.2 times in the case of fermented flaxseed with lactic-acid bacteria compared to non-fermented flaxseed (NFFS). DPPH radical scavenging and superoxide dismutase-like activities had increased around 5.6 and 2.3 times, respectively, in the fermented flaxseed compared to the NFFS at 100 ppm concentration. The study concluded that fermentation of flaxseed with lactic-acid bacteria is possible and that it is effective to increase the antioxidant effects of flaxseed. These results can be applied to the development of improved foods and cosmetic materials.

• Journal of Life Science
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• v.29 no.4
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• pp.470-477
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• 2019

White jelly fungus (Tremella fuciformis Berk) is effective for hypertension, diabetes, obesity, lung disease, beauty, and has been known as an elixir of life in ancient Chinese dynasty. In this study, we investigated the anti-obesity and diabetic effects of the fermented white jelly fungus extract by the bioconversion process. We fed an obesity-inducing mouse with 5% non-fermented Tremella fuciformis (TF), 2.5% fermented Tremella fuciformis (FTF), and 5% FTF containing High Fats Diet (HFD) and HFD for 8 weeks, respectively. The oral glucose tolerance test (OGTT) was performed analysis after 7 weeks of feeding and the dietary intake, food efficiency ratio, body weight, liver, epididymal fat weight, and serum insulin level were measured after 8 weeks of feeding. Also, HOMA-IR was analyzed. The concentrations of serum total cholesterol, triglycerides test was analyzed. The FTF compare with 5% TF and HFD confirmed that 5% FTF reduced body weight, tissue weight, triglycerides concentration, HOMA-IR, respectively. As a result, we confirmed that the fermented white jelly fungus has the anti-obesity effect. Finally, this study can be used a basic data for obesity treatment using fermented white jelly fungus.

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.6
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• pp.839-847
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• 2011

Fermented compost made from medicinal herb waste (MHWC) as an environment-friendly manure was applied to determine the physicochemical characteristics of Rubus coreanus Miquel (Bokbunja). MHWC, poultry manure compost (PMC), and MHWC+PMC (1:1, w/w) were applied to 2 year-old Bokbunja plants at levels of 0 (UC: untreated control), 20, and 40 Mg/ha, respectively. The physicochemical characteristics of Bokbunja were investigated 15, 20, and 25 days after flowering (DAF). There were no differences between the chemical compositions of the group. However, the total sugar contents of the fruit harvested 15, 20, and 25 DAF from MHWC were increased 0.54~0.56, 0.46~0.53, and 1.80~2.52%, respectively, as compared with UC. The free sugar content in fruit from the MHWC group was higher compared to the other groups. The fructose and glucose contents were increased 0.08~0.31% and 0.08~0.18%, respectively. The organic acid content of the fruit was increased in the MHWC and PMC groups, and citric acid constituted 92.67~93.59% of the total organic acid content. In conclusion, MHWC treatment is a compost source for quality improvement of total sugar, free sugar, and organic acid contents of Bokbunja.