• 한국의류학회지
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• 제38권3호
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• pp.415-426
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• 2014

This study investigated the color change, enhancement of dye uptake, washing fastness, and light fastness of cotton and silk when dyed with Juniperus chinensis and Terminalia chebula (combination dyeing) using various methods. The dyeing methods were 1) dyeing Juniperus chinensis extract and Terminalia chebula Retzius extract sequentially (J-T), 2) dyeing Terminalia chebula Retzius extract and Juniperus chinensis extract sequentially (T-J), 3) dyeing Juniperus chinensis extract and Terminalia chebula Retzius extract simultaneously (J+T), and 4) dyeing Juniperus chinensis extract 4 times repeatedly and followed by a dyeing Terminalia chebula Retzius extract in sequence. In terms of increased dyeing uptake, combination dyeing (dyeing 2 times like method 1, 2, 3) had the same impact as the repeated dyeing (method 4). The color of J, T combination dyeing showed wide range of mixed YR series, Y series resulting from Terminalia chebula Retzius, and R series resulting from Juniperus chinensis. In cotton, J-T dyeing method showed superior enhancement of dye uptake, and T-J method in silk. In both of the cases, Y series color from Terminalia chebula Retzius extract was mainly shown (Y series color was superior to R series color after dyeing). Therefore, it is recommended for cotton to implement T-J method and for silk to implement J-T method in order to enhance both dyeing uptake and emphasize the color of R series. The K/S value of combination dyed fabrics was decreased by increasing washing time; however, the K/S value of combination dyed fabrics was increased by increasing UV irradiation time. But after repeated washing and longer UV irradiation, ${\Delta}E$ value of combination dyed fabric became smaller compared to fabric dyed with Juniperus chinensis only. Thus, it was found that after J, T combination dyeing, fabric became less prone to fading by washing and UV than after Juniperus chinensis single dyeing was done.

• 한국의류산업학회지
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• 제16권3호
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• pp.476-484
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• 2014

The purpose of this study was to investigate the dyeing properties and anti-microbial ability of silk and wool fabrics dyed with Terminalia chebula Retzius(TCR) extract using two extraction solvent, hot water and methanol. Dyeing properties of fabrics were studied by investigating the characteristics of colorant, changes in dye uptake under different dyeing conditions, and by investigating color change when mordants were applied. Also, color fastness, and antimicrobial activity of dyed fabrics were estimated. Regardless of extraction solvent type, colorant showed maximum absorption wavelength at 280 nm and 578 nm, which implied that tannin was the major pigment component of TCR. Also, through FT-IR spectrum result, it was confirmed that tannin of TCR methanol extract was hydrolysable tannin. But for the hot water extract, it was only assumed that its tannin was condenced tannin. Fabric dyed with hot water solvent extract showed higher dye uptake than fabric dyed with methanol solvent extract, dye uptake increasing by higher concentration of the dye, longer dyeing time and higher dyeing temperature. And the absorption curve between TCR extract and protein fiber was shaped in the form of Langmuir adsorption isotherm. Fabric dyed without mordant was yellow in color, and when dyed with mordant, fabric showed various colors depending on mordant types except Sn. Color fastness to washing was generally fine and color fastness to light was moderate. But color fastness to rubbing and dry cleaning was outstanding. Lastly, dyed fabrics showed very good antimicrobial activity of 99.9% against Staphylococcus aureus and Kiebsiella pneumoniae.

• 분석과학
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• 제19권3호
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• pp.194-202
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• 2006

중국산 천연물질인 서장채국화, 홍경천 및 장청과에서 미백성분을 추출 및 정제하였다. 잘게 분쇄한 서장채국화와 장청과 잎을 각각 물과 에틸 에테르로 추출하고 제조용 크로마토그래피 GS310 컬럼($21.5{\times}500mm$ i.d., $10-15{\mu}m$)으로 네 개 혹은 세 개의 부분으로 획득한 후 농축하였다. 잘게 분쇄한 홍경천은 메탄올로 추출하고 분석용 $C_{18}$ 컬럼 ($3.9{\times}300mm$ i.d., $15{\mu}m$)으로 2개의 부분으로 획득한 후 농축하였다. 미백효과는 in-vitro 멜라닌 생성효과로 측정하였다. 이때 사용한 멜라닌-a와 B16 셀의 농도는 $10{\mu}g/ml$이다. $200{\mu}g/ml$의 농도에서 서장채국화의 에틸 아세테이트층은 92%의 멜라닌 억제효과를 보이며, 홍경천은 60%의 멜라닌 억제효과를 보였다. 이것은 모두 알부틴의 미백효과(45.6%)보다 우수하였다. $100{\mu}g/ml$의 농도에서 장청과는 90%이상의 멜라닌 억제효과를 나타냈지만 B16흑색종 셀에 대하여 독성을 보였다.

• Biomolecules & Therapeutics
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• 제20권1호
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• pp.104-112
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• 2012

The fruit of Terminalia chebula Retzius has been used as a panacea in India and Southeast Asia but its biological activities have not been fully elucidated. Here we report anti-arthritic and analgesic effect of NDI10218, a standardized ethanol extract of Terminalia chebula, on collagen-induced arthritis and acetic acid-induced writhing model, respectively. Arthritis was induced in DBA/1J mice by immunizing bovine type II collagen and mice were treated with NDI10218 daily for 5 weeks after the onset of the disease. NDI10218 reduced the arthritis index and blocked the synovial hyperplasia in a dose-dependent manner. The serum levels of pro-inflammatory cytokines TNF-${\alpha}$, IL-6, and IL-$1{\beta}$ were significantly reduced in mice treated with NDI10218. Production of the inflammatory IL-17, but not immunosuppressive IL-10, was also inhibited in splenocytes isolated from NDI10218-treated arthritis mice. Administration of NDI10218 markedly decreased the number of T cell subpopulations in the regional lymph nodes of the arthritis mice. Finally, NDI10218 reduced the number of abdominal contractions in acetic acid-induced writhing model, suggesting an analgesic effect of this extract. Taken together, these results suggest that NDI10218 can be a new therapeutic candidate for the treatment of rheumatoid arthritis.

• 대한화장품학회지
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• 제35권3호
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• pp.229-233
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• 2009

식물 20종을 메탄올로 추출하여 양성자 빔 조사 에너지양(1, 5, 10 KGray)에 따른 항산화 활성 능을 탐색 하고자 DPPH 라디칼 소거활성과 ABTS free 라디칼 소거 활성에 대하여 조사하였다. 양성자 빔 조사 시 15종류는 활성이 증가하였으나 10 KGray에서 흑축(Pharbitis nil Choisy)은 활성이 감소하였으며, 4종류는 활성변화가 없었다. DPPH 라디칼 소거활성은 1 및 5 KGray에서 유근피(Ulmus macrocarpa) (84 %), 10 KGray (85 %)로 가장 높았으나 10 KGray에서 흑축(Pharbitis nil Choisy)은 6 % 감소하였다. $IC_{50}$값을 무처리구와 빔 조사량에 대한 활성을 비교하면 1 KGray에서 산약(Dioscorea batatas Decne.) 6.3배, 5 KGray에서 천화분(Trichosanthes kirilowii Max.) 2.1배, 산약(Dioscorea batatas Decne.) 2.8배 증가하였다. ABTS free 라디칼 소거활성에서 1 KGray의 양성자 빔 에너지를 조사 했을 경우, 가자(Terminalia chebula Retzius)는 60 % 증가하였다. $IC_{50}$값은 1 KGray 빔 조사 시 0 KGray보다 마황근(Ephedra sinica Stapf) 2.0배, 가자(Terminalia chebula Retz.) 2.5배, 우방자(Arctium lappa Linne) 2.4배 증가하였다.