• 생약학회지
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• 제29권3호
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• pp.204-208
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• 1998

Geniposide, an iridoid glucoside, has been isolated from the butanol fraction of Gardenia jasminoides Ellis (Rubiaceae). The component was found to be transformed into the blue pigments by some aerobic bacteria, suggesting that geniposide is the precursor for the formation of pigments after converting into genipin, an aglycon of geniposide, by ${\beta}-glucosidase$. Some bacteria having a ${\beta}-glucosidase$ activity did not form the pigments, which may mean that the formation of pigments can only be occurred by the reaction of any enzyme or compound in the pigment-producing bacteria.

• 한국식품과학회지
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• 제43권1호
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• pp.51-57
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• 2011

치자의 항산화 활성과 유지산화 지연효과를 측정하고 활성을 보인 분획에서 주성분인 geniposide와 crocin을 분리하고 그 구조를 확인하였다. 여러 분획 중 부탄올 분획과 물 분획의 항산화성이 가장 우수함을 확인하고 그 분획의 주성분으로 분리된 geniposide와 crocin의 단일물질로서의 항산화력을 측정 비교한 결과, crocin의 항산화력이 더 강함을 알 수 있었다. 특히 SOD 유사활성 시험에서 여러 분획의 활성이 총 메탄올 추출물보다도 낮음에 비하여 crocin 단일 물질은 양성 대조군 cholorogenic acid의 $EC_{50}$ 값 453 ppm에 비하여 절반정도 낮은 $EC_{50}$값 259 ppm으로 매우 높은 활성을 보였다. 유지 산화 지연효과도 치자의 총 메탄올 추출물 250 ppm 이상의 농도에서의 AI값은 BHA 1000 ppm에서의 AI값 1.66 보다 큰 1.81 이상임을 보여 유지 산화 지연효과가 우수함을 나타내었다. 이 논문의 연구결과로 치자의 항산화 기능성 식품 및 첨가제로서의 개발가능성이 확인되었다고 사료된다.

• Journal of Microbiology and Biotechnology
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• 제24권6호
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• pp.788-794
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• 2014

An extracellular ${\beta}$-glucosidase from Aspergillus niger Au0847 was purified to homogeneity by precipitation with ammonium sulfate, anion exchange, and gel filtration. The purified protein was composed of two subunits with molecular masses of 110 and 120 kDa. Au0847 ${\beta}$-glucosidase exhibited relatively high thermostability and pH stability, and its highest activity was obtained at $65^{\circ}C$ and pH 4.6, respectively. As a potential metalloprotein, its enzymatic activity was potently stimulated by manganese ion and DTT. The ${\beta}$-glucosidase displayed avid affinity and high catalytic efficiency for geniposide. Au0847 ${\beta}$-glucosidase has potential value as an industrial enzyme for the hydrolysis of geniposide to genipin.

• 생약학회지
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• 제40권1호
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• pp.18-24
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• 2009

GCSB-5 preparation is a purified extract from a mixture six herbal medicines (Acanthopanacis Cortex, Achyranthis Radix, Saposhnikoviae Radix, Cibotii Rhizoma, Glycine Semen Nigra, Eucommiae Cortex) that have been widely used in traditional medicine to treat various bone disorders. This study was carried out to obtain the HPLC analysis method that can be used to establish quantitative analysis of Glycine Semen Nigra and Eucommiae Cortex for standardization of GCSB-5 preparation. HPLC analysis methods for the simultaneous determination of genistin (Glycine Semen Nigra) and geniposide (Eucommiae Cortex) were established for the quality control of herbal medicinal raw material and preparation. And validation of HPLC analysis methods were conformed for verification of HPLC methods by check to specificity, linearity, intra-day precision, inter-day precision and accuracy following ICH guideline. As the result of quantitative analysis, the contents of genistin and geniposide in the raw material of GCSB-5 preparation were 0.0426-0.0427 mg/g and 0.431-0.432 mg/g. And GCSB-5 preparation contained genistin of 0.0202-0.0203 mg/capsule and geniposide of 0.211-0.212 mg/capsule, respectively.

• Journal of Microbiology and Biotechnology
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• 제25권6호
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• pp.814-819
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• 2015

The natural crosslinking agent genipin has been applied widely in biomedicines and foods nowadays. Because of the special hemiacetal ring structure in its molecule, it can only be prepared by hydrolysis of geniposide according to biocatalysis. In this research, strategies including aqueous-organic biphasic catalysis and substrate fed-batch mode were adopted to improve the biocatalysis process of genipin. A 10 L ethyl acetate-aqueous biphasic system with geniposide fed-batch led to a satisfying genipin yield. With Fusarium solani ACCC 36223, 15.7 g/l genipin in the ethyl acetate phase was obtained, corresponding to space-time yields of 0.654 g l^-1 h^-1.

• 한국식품과학회지
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• 제31권4호
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• pp.945-951
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• 1999

식품중 공정시험법이 확립되어 있지 않은 치자황색소를 우리실정에 적용 가능한 시험방법을 개발, 확립함과 동시에 확립된 시험방법을 토대로 시중에서 유통되고 있는 일부 가공식품에 대하여 분석한 결과는 다음과 같다. 치자황색소 분석은 crocetin과 geniposide을 지표물질로 하여 역상계 칼럼인 Capcell Pak $C_{18}$을 이용하여 HPLC분석을 수행하였으며, crocetin은 상관계수(r) = 0.9997, 재현성 RSD 0.19, 검출한계 $0.07\;{\mu}g/g$, geniposide는 상관계수(r) = 0.9990, 재현성 RSD 0.22, 검출한계 $0.05\;{\mu}g/g$으로 매우 양호하였으며, 또한 확립된 HPLC분석방법으로 시중에서 유통되고 있는 단무지 60품목, 가공우유 20품목 및 스넥 12품목등 총 92품목을 분석한 결과, crocetin의 경우 단무지는 회수율 87.8%, 38품목은 불검출, 22품목에서 $0.1{\sim}1.7\;{\mu}g/g$이 검출, 우유는 회수율 85.9%. 10품목은 불검출, 10품목에서 $0.1\;{\sim}\;0.2\;{\mu}g/g$이 검출되었으며, 스넥은 회수율 86.5%, 10품목은 불검출 2품목에서 $1.5\;{\sim}\;1.6\;{\mu}g/g$이 검출되었다. Geniposide의 경우 단무지는 회수율 93.4%, 39품목은 불검출, 21품목에서 $1.5{\sim}14.1\;{\mu}g/g$이 검출, 우유는 회수율 90.2%, 10품목은 불검출, 10품목은 $0.5\;{\sim}\;13.6\;{\mu}g/g$이 검출되었으며, 스넥은 회수율 92.8%, 10품목은 불검출, 2품목은 각각 $0.9\;{\mu}g/g$이 검출되었다. 이상의 시험결과로서 본 연구에서 확립된 시험방법은 식품중 치자황색소 분석 공정시험법으로 활용할수 있으며, 또한 식품에 대한 사용기준 준수여부 확인 및 식품 품질관리에 크게 기여할 수 있을 것으로 기대된다.

• 대한한의학방제학회지
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• 제16권1호
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• pp.95-107
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• 2008

Objectives : Hwangnyeonhaedok-tang(HNHDT) is the one of well-known traditional herbal formula and has been widely used for the treatment of various diseases in Korea. For the quality improvement of commercial traditional herbal formula, we investigated the quality of prepared HNHDT. Methods: We measured the contents of baicalin, berberine and geniposide in the HNHDT Ex preparations on the market by HPLC and compared with the official notice of ingredients. Results: In 3 preparations of HNHDT covered with the national health insurance(NHI), the content of baicalin was various from 32.83mg to 185.05mg, the total berberine was $12.0{\sim}50.75mg$ and geniposide was $12.57{\sim}44.84mg$. Contents of marker ingredients in NHI Preparations were below the standard and showed a large variation. In 7 non NHI Preparations of HNHDT and the standard(STD) HNHDT manufactured in laboratory, the content of baicalin was $37.16{\sim}115.69mg$, the total berberine was $5.62{\sim}28.43mg$ and geniposide was $10.98{\sim}113.47mg$. But, because composition of non-NHI preparations is different from NHI preparations, every maker's contents were up to the notice for baicalin and berberine. There was newly enforced standard regulations of geniposide in non-NHI preparations, so contents of geniposide was up to that standard only in JI and STD. Conclusions: There was a large variation of contents in the HNHDT Ex preparations on the market and the quality differences were existed between NHI and non-NHI preparations of HNHDT. Further studies for evaluation of efficacy differences and standardization of manufacturing processes are necessary.

• 대한본초학회지
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• 제28권4호
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• pp.17-23
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• 2013

Objectives : The objective of the paper was to study cutting method of Gardeniae frutus, that tends to show symptom of separations in a packing, in accordance with the comparison experiment of quantification and antioxidant effect proceed with the intact Gardeniae fructus(Gf), seed of Gardeniae fructus (Gs) and the pericarp of Gardeniae fructus (Gp) separately. Methods : The Gf, Gs, and Gp were extracted using 80% MeOH, followed by quantizing geniposide contained in each group. A MTT assay was conducted and ROS generation and NO production were measured for comparing its antioxidant effect. Results : As a result of quantizing geniposide contained in the Gf, Gp, and Gs, respectively, the geniposide content was shown to be the highest in the Gs. MTT assay showed that no cytotoxicity was observed in the groups treated with Gf, Gp, and Gs, respectively, at a dose of 500 ${\mu}g/ml$. The ROS generation was shown to have more significantly decreased in the group pretreated with Gf 500 ${\mu}g/ml$ than in the group treated with LPS. The NO level was shown to have more significantly decreased in the group pretreated with Gp 500 ${\mu}g/ml$ than in the group treated with LPS. Conclusion : As the geniposide content and antioxidant effect of Gf varies according to its each part, it is recommended that Gf should be distributed as an intact form other than segregation in packing.

• 생명과학회지
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• 제34권1호
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• pp.59-67
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• 2024

산딸기, 치자, 유백피의 혼합물인 복합 천연물 LS-RUG-com이 위염, 위궤양, 식도성 역류염 및 Helicobacter를 억제함을 확인한 바, LS-RUG-com을 건강기능식품 개별인정형 소재로 개발하고자 하였다. 본 연구에서는 소재 개발을 위한 LS-RUG-com 분석방법을 확립하고자 하였으며, 산딸기, 치자 및 유백피의 지표물질을 HPLC/UV system을 이용하여 분석방법을 최적화하였다. 본 연구에서는 분석법 validation을 입증하기 위하여 특이성(specificity), 정확성(accuracy), 정밀성(precision), 검출한계 및 정량한계(detection & quantitation limit) 및 직선성(linearity)을 평가하였으며, 그 결과 본 연구의 HPLC/UV 동시 분석법이 산딸기, 치자 분석에 적합하며, 신뢰성이 있음을 증명하였다. 또한 유백피의 HPLC/UV 단독 분석법이 적합하며 신뢰성이 있음을 증명하였다.

• 생약학회지
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• 제46권2호
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• pp.123-132
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• 2015

In this study, we carried out quantification analysis of the six marker components, geniposidic acid, chlorogenic acid, geniposide, pinoresinol diglucoside, liriodendrin, and genipin in the 70% ethanol extracts of non-processed Eucommiae Cortex and processed Eucommiae Cortex using a high-performance liquid chromatography coupled with photodiode array detector. The six components were separated on Gemini C₁₈ column (5 μm, 4.6×250 mm) by the gradient elution with 1.0% (v/v) acetic acid in water and 1.0% (v/v) acetic acid in acetonitrile as mobile phase. The flow rate was 1.0 mL/min and the injection volume was 10 mL. The amount of geniposidic acid, chlorogenic acid, geniposide, pinoresinol diglucoside, liriodendrin, and genipin in non-processed Eucommiae Cortex were 1.31, 0.31, 0.66, 0.46, 0.46, and 0.03%, respectively, while the amount of the six compounds in non-processed Eucommiae Cortex were 0.04-0.78, 0.01-0.14%, 0.05-0.63%, 0.01-0.37%, 0.15-0.42%, and not detected, respectively. After processing treatment, the contents of three iridoids, two lingnan, and one phenylpropanoid decreased in Eucommiae Cortex.