• Journal of the Society of Cosmetic Scientists of Korea
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• v.25 no.4 s.34
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• pp.111-121
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• 1999

Acne vulgaris, the most common skin disease. can be formed as only a few comedons or severe inflammatory lesions. The pathogenesis of acne involves various factors; excessive androgen, excessive sebum production, abnormal alteration of follicular epithelium, proliferation of Propionibacterium acnes, and inflammation. We investigated acne therapy using oriental herbs described in the Korean traditional medical book(Dong-ui-bo-gam). Oriental herbs(Angelica daurica, Arctium lappa, Coptidis rhizoma, and Glycyrrhiza glabra) were chosen based on their respective property of sebum control, anti-inflammatory activity, and anti-bacterial activity. We examined the effect of acne treatment, in terms of chemotactic inhibition, lipogenesis inhibition, and anti-bacterial activity for P. acnes. 1. Neutrophil chemotaxis assay; P. acnes secrete chemotactic factors and other pro-inflammatory extracellular products. Neutrophil chemotactic activity of P. acnes was measured by 48-well chemotaxis method. Angelica daurica clearly suppressed chemotactic activity of P. acnes. 2. Using sebaceous gland of hamster ear lipogenesis assay; Sebaceous lipogenesis was measured using ear biopsies by incubation or $C^{14}$-acetate in culture media. The $C^{14}$-labeled lipids were extracted and determined by liquid scintilation counting. Coptidis rhizoma markedly inhibited sebum production. 3. Anti-bacterial assay for P. acnes(MIC test); Glycyrrhiza glabra showed anti-bacterial activity. P. acnes did not develop resistance against Glycyrrhiza glabra. Retinoids are effectively to inhibit sebum production and regulate follicular keratinization process, with little anti-inflammatory activity. Angelica daurica suppressed neutrophil chemotaxis, Coptidis rhizoma inhibited sebum production, and Glycyrrhiza glabra showed anti-bacterial activity against P. acnes. A combined formulation of Angelica daurica, Coptidis rhizoma. and Glycyrrhiza glabra is expected to provide effective acne treatment.

• Asian-Australasian Journal of Animal Sciences
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• v.26 no.9
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• pp.1289-1294
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• 2013

This study evaluated the in vitro effect of medicinal plant extracts on ruminal methanogenesis, four different groups of methanogens and ruminal fermentation characteristics. A fistulated Holstein cow was used as a donor of rumen fluid. Licorice and mugwort extracts (Glycyrrhiza uralensis and Artemisia capillaris, 0.5% and 1% of total substrate DM, respectively), previously used as folk remedies, were added to an in vitro fermentation incubated with buffered-rumen fluid. Total gas production in Glycyrrhiza uralensis extract treatment was not significantly different between treatments (p<0.05) while total gas production in the Artemisia capillaris extract treatment was lower than that of the control. Artemisia capillaris extract and Glycyrrhiza uralensis extract reduced $CH_4$ emission by 14% (p<0.05) and 8% (p<0.05), respectively. Ciliate-associated methanogens population decreased by 18% in the medicinal plant extracts treatments. Medicinal plant extracts also affected the order Methanobacteriales community. Methanobacteriales diversity decreased by 35% in the Glycyrrhiza uralensis extract treatment and 30% in the Artemisia capillaris extract treatment. The order Methanomicrobiales population decreased by 50% in the 0.5% of Glycyrrhiza uralensis extract treatment. These findings demonstrate that medicinal plant extracts have the potential to inhibit in vitro ruminal methanogenesis.

• KSBB Journal
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• v.29 no.1
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• pp.29-35
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• 2014

In this study, antioxidant and antimicrobial activities of ethanolic crude extract and its five different solvent subfractions (namely, ethyl acetate fraction, n-butanol fraction, chloroform fraction, n-hexane fraction and the aqueous fraction) from a mixture of four different medicinal herbs (Galla rhois, Achyranthes japonica Nakai, Terminalia chebula Retz and Glycyrrhiza uralensis) were investigated. Among all the tested mixture combination of four medicinal herbs, 5:3:1:1 ratio of Galla:Achyranthes : Terminalia : Glycyrrhiza had the best antimicrobial effects against four strains of microorganisms (Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa and Escherichia coli) and exhibited the highest DPPH radical-scavenging activity. Further sub-fractions with solvents were screened for antioxidant and antimicrobial activities. Antioxidant activity in order was ethyl acetate fraction > n-butanol fraction > chloroform fraction > nhexane fraction > aqueous fraction. The n-butanol extracted fraction showed the highest level of antimicrobial activity in com- parison to other fractions. In addition, all those fractions did not show any cytotoxicity against human skin cell CCD-986sk. These results suggest that 5:3:1:1 combination extracts of medicinal herbs (Galla : Achyranthes : Terminalia : Glycyrrhiza) may be potentially used as a safe natural antimicrobial preservative.

• Korean Journal of Food Science and Technology
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• v.30 no.3
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• pp.680-687
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• 1998

The ethyl acetate fraction from ethanol extract of Glycyrrhiza uralensis FISCH showed growth inhibition on 5 strains of Listeria monocytogenes (ATCC 19111, 19112, 19113, 19114 and 15313) at $50{\sim}100\;ppm$. By silica gel column chromatography twice, antimicrobial active compound G-4-4 was isolated from ethyl acetate fraction of Glycyrrhiza uralensis FISCH. The G-4-4 fraction showed growth inhibition at $10{\sim}50\;ppm$ and confirmed bactericidal effect at 50 and 100 ppm on 5 strains of Listeria monocytogenes. Staphylococcus aureus KFCC 11764 was inhibited at $30{\sim}50\;ppm$ of G-4-4 but Escherichia coli ATCC 25922 was not inhibited at 100 ppm. The antimicrobial active substance G-4-4 was identified as liquiritigenin, a kind of flavanone compound, by IR, MS, $^1H-NMR\;and\;^{13}C-NMR$.

• Proceedings of the SCSK Conference
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• 1999.10a
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• pp.111-121
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• 1999

Acne vulgaris, the most common skin disease. can be formed as only a few comedons or severe inflammatory lesions. The pathogenesis of acne involves various factors; excessive androgen, excessive sebum production, abnormal alteration of follicular epithelium, proliferation of Propionibacterium acnes, and inflammation. We investigated acne therapy using oriental herbs described in the Korean traditional medical book (Dong-ui-bo-gam). Oriental herbs (Angleica daurica. Arctium lappa. Coptidis rhizoma, and glycyrrhiza glabra) were chosen based on their respective property of sebum control, anti-inflammatory activity, and anti-bacterial activity. We examined the effect of acne treatment, in terms of chemotactic inhibition, lipogenesis inhibition, and anti-bacterial activity for P. acnes. 1. Neutrophil chemotaxis assay ; P acnes secrete chemotactic factors and other pro-inflammatory extracellular products. Neutrophil chemotactic activity of P. acnes was measured by 48-well chemotaxis method. Angelica daurica clearly suppressed chemotactic activity of P. acens. 2. Using sebaceous gland of hamster ear lipogenesis assay; Sebaceous lipogenesis was measured using ear biopsies by incubation of $C^{14}$ -acetate in culture media. The $C^{14}$ -labeled lipids were extracted and determined by liquid scintilation counting, Coptidis rhizoma markedly inhibited sebum production, 3. Anti-bacterial assay for P. acnes (MIC test) Glycyrrhiza glabra showed anti-bacterial activity. P. acnes did not develop resistance against Glycyrrhiza glabra. Retinoids are effectively to inhibit sebum production and regulate follicular keratinization process, with little anti-inflammatory activity. Angelica daurica suppressed neutrophil chemotaxis. Coptidis rhizoma inhibited sebum production, and Glycyrrhiza glabra showed anti-bacterial activity against P. acnes. A combined formulation of Angelica daurica. Coptidisr hizoma and Glycyrrhiza glabra is expected to provide effective acne treatment.ent.ive acne treatment.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.48 no.1
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• pp.33-38
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• 2022

Ultraviolet B (UVB) damages DNA residues in skin keratinocytes. In particular, the formation of cyclobutane pyrimidine dimers (CPD), a pyrimidine residue damage in DNA, is considered a representative indicator of skin photoaging. In this study, we confirmed defensive effect of Glycyrrhiza glabra (G. glabra) extract against UVB induced DNA damage. First of all, we confirmed UVB dependent amount of CPD formation in human keratinocyte cell line. UVB induced CPD was decreased by G. glabra extract by dose dependent manner. In addition, it was confirmed that the expression of mRNA of DNA damage recovery factors was increased by G. glabra extract. Consequently, through this study, it was possible to confirm the DNA protection effect of G. glabra extract in skin keratinocytes.

• Korean Journal of Plant Resources
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• v.36 no.4
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• pp.282-289
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• 2023

Glycyrrhiza korshinskyi Grig. (Gk), which is a new variety of Glycyrrhiza, was developed by the National Institute of Horticultural and Herbal Science in Korea Rural Development Administration. It is improved the limitations of traditional Glycrrhiza species such as G. uralensis Fisch., G. glabra L., and G. inflata Batal. and has been reported various pharmacological effects. The aim of this study is to investigate the protective effect of Gk on the acute pancreatitis, because which has not been revealed yet. AP was induced via intraperitoneal injection of cerulein (50 ㎍/kg) hourly for 7 times in C57BL/6 mice. Gk water extract (20 or 50 mg/kg) or saline was administrated via oral gavage 1 h before the first injection of cerulein. The mice were sacrificed at 5 h after the final injection of cerulein. The inflammatory cell infiltration in pancreatic tissue was decreased by the administration of Gk water extract compared to the AP group. Also, serum amylase and lipase levels were decreased by the administration of Gk water extract compared to the AP group. These results suggest that Gk have protective effect on the acute pancreatitis.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2020.12a
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• pp.80-80
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• 2020

Glycyrrhizae Radix (GR), commomly known as liquorice, is a medicinal and edible plant widely used in East Asia with its pharmacological properties. Currently, Glycyrrhiza uralensis, G. glabra and G. inflata are used for pharmaceutical purposes in Korea and then the improved Glycyrrhiza varieties, WON-GAM (WG) has been developed by Korea Rural Development Administration. To evaluate equivalence of efficacy, several comparative studies between already-registered species and new cultivars have been conducted. To evaluate equivalence of efficacy, several comparative studies between already-registered species and new cultivars have been conducted. The aim of this study was to evaluate the effect of WG on fecal microbiota in DSS-induced colitis model. Fecal microbiota was analyzed by terminal restriction fragment length polymorphism (T-RFLP). The composition of the fecal microbiota did not show a specific pattern based on experimental groups; however, a tendency toward an increase in the proportion of Lactobacillales was observed. Glycyrrhiza varieties could change composition of fecal microbiota in DSS-induced colitis model. This work was carried out with the support of "Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ014246022020)" Rural Development Administration.

• Korean Journal of Pharmacognosy
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• v.34 no.1 s.132
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• pp.33-39
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• 2003

Eight compounds were isolated from the roots of Glycyrrhiza glabra by the tyrosinase inhibitory activity guided fractionation, and their structures were identified as liquiritigenin (1), isoliquiritigenin (2), isoliquiritigenin-2'-O-methyl ether (3), liquiritin (4), isoliquiritin (5), ononin (6), glycycoumarin (7), glycyrol (8) by analysis of spectral data. Compound 3 exhibited the most potent inhibitory effect on mushroom tyrosinase activity ($IC_{50}$, 47 M).

• Biomedical Science Letters
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• v.13 no.3
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• pp.189-195
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• 2007

This study was carried out to examine antimicrobial substances from medicinal plants, the ethanol extracts of 38 medicinal plants were tested for the antimicrobial activity against Staphylococcus aureus ATCC 25923 and methicillin-resistant Staphylococcus aureus ATCC 43300. The extracts of Glycyrrhiza uralensis, Sophora flavescens, Dryopteris crassirhizoma, and Pinas densiflora showed significant antimicrobial activities against both S. aureus ATCC 25923 and methicillin-resistant S. aureus ATCC 43300. The extract of Dryopteris crassirhizoma among these medical plants showed the highest antimicrobial activity. These results suggested that the extracts from Dryopteris crassirhizoma, Sophora flavescens, Pinas densiflora, and Glycyrrhiza uralensis could be the potential source of antimicrobial agents against methicillin-resistant S. aureus and S. aureus.