• Journal of the Korean Society of Clothing and Textiles
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• v.11 no.3 s.25
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• pp.25-32
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• 1987

The purpose of this study is to investigate optical behaviour of coloring matter of gromwell -extracted by water, acetic acid/methanol, and the other solvents. The results were as following: UV, VIS spectra of the solution of coloring matter of gromwell extracted by water at below $80^{\circ}C$ did not reveal in the range of the visible light wavelength and coloring matter of gromwell decomposed to blue particle at $95^{\circ}C$. The solution extracted by acetic acid/methanol was tinged with reddish purple and its spectra shifted to the longer wavelength according to increase of the solvent temperature. The color of the solution extracted by water became extinct as time went by, but that extracted by acetic acid/methanol kept up original color. In case of dried gromwell, extraction by acetic acid/methanol was easier than by water, and variation of spectra did not appear but showed hypochromic shift.

• Proceedings of the Korean Society of Crop Science Conference
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• 2005.04a
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• pp.2-6
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• 2005

질병의 예방, 노화억제, 돌연변이 억제 등 다양한 생리활성을 나타내는 안토시아닌 색소 C3G가 다량 함유되어 있는 흑자색 유색미의 성분연구를 수행한 결과 9가지의 천연화합물을 분리하였으며, 그 중 항산화 기능이 매우 뛰어난 페놀성 화합물 oryzafuran을 최초로 분리 그 구조를 확인하였다. 또한 allantoin과 같은 알칼로이드도 쌀에서는 처음으로 분리하였다. 이러한 결과를 통해 흑자색 유색미는 식용이상의 역할을 수행할 것으로 판단된다. 아울러 이러한 성분의 정량분석 방법과 합성과 관련된 메커니즘, 성분의 약리적 기능, 유전자원 평가 등 산업화를 위한 체계적인 연구가 수행되어야 할 것이며, 더 나아가 고C3G, 저단백, 저알레그렌, 고불포화지방산 등과 같은 다기능성 유색미 품종을 육성 보급함으로써 국민보건 및 농가소득에 크게 기여할 것으로 판단된다. 특히 이와 같은 성분이 주로 분포하는 미강은 도정과정을 통해 대부분 제거되기 때문에 회수하기가 용이하고, 따라서 부산물로 발생하는 흰쌀을 식품가공분야에서 이용할 수 있어 산업적으로 가치가 매우 높다고 판단된다.

• 한국약용작물학회:학술대회논문집
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• 2011.04a
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• pp.320-321
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• 2011

• 한국약용작물학회:학술대회논문집
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• 2008.11a
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• pp.366-367
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• 2008

• Textile Coloration and Finishing
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• v.14 no.4
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• pp.240-248
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• 2002

The most effective solvent for extract of dye from amur cork tree was methanol. Two protoberberine alkaloids, berberine and palmatine, were isolated from amur cork tree by Prep-TLC, and the developing solvent was Benzene : AcOEt ; PrOH ; MeOH ; EtNH$_2$(8: 4: 2: 0.5: 0.5). Dyes were stable at a high temperature and there wasn't any change of color at pH 3~9 and with added metal mordants. In adsorption spectra of aqueous solution of berberine and tannin mixture, two isosbestic points$(328^{nm},\;357^{nm})$ were found and the mole fraction of reaction of components was 1:1.

• Textile Coloration and Finishing
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• v.6 no.2
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• pp.40-46
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• 1994

In order to study the properties of cochineal color, variation of uv, visible spectra by pH, dyeing properties on the silk in several dyeing conditions and thermodynamic parameter were investigated. Cochineal colors had an unusual to pH, especially had instability in alkali condition. An increase in the dyeing temperature and in time resulted in an increase in the dye content of silk fibers. Concentration of cochineal color in the silk fiber was related to pH and the maximum exhaustion of cochineal colors showed at about pH 3. The value of apparent diffusion coefficients and standard affinities of dyeing increased with the increase of dyeing temperature. The standard heats of dyeing(ΔH°), variation of entropy(ΔS°) and activation energy(E/sub act/) were caculated to be -1.72kcal/mo1, -3.77cal/mo1ㆍdeg and 1.26kcal/mo1, respectively. Silk fabrics were dyed bright red by tin chloride, reddish purple by copper sulfate, and bluish gray by iron sulfate, respectively. Lightfastness of silk fabrics mordanted by metal ion was weak.

• Textile Coloration and Finishing
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• v.5 no.2
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• pp.91-98
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• 1993

The silk fabrics were treated with color solution extracted from leaf of Camellia. The depression effect of destruction and yellowing of silk treated with color solution, shift of UV-VIS spectra of color solution, color difference of silk fabrics by dyeing with acid dyes and drycleaning fastness of silk treated with color solution were studied. UV-VIS spectra appeared to hypsochromic shift by irradiation. The decrease of tensile strength and the elongation of the silk treated with color solution showed depressed but those of untreated silk increased by irradiation. The yellowness index of silk treated with color solution showed a little change by irradiation. The color difference after dyeing with several acid dyes on treated and untreated silk showed not remarkable changes. Dsrycleaning fastness of silk treated by color solution was excellent.

• Journal of the Korean Society of Clothing and Textiles
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• v.22 no.8
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• pp.1011-1019
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• 1998

The natural dyestuff(squid ink) was manufactured from squid ink by boiling in 0.1% NaOH solution and powdering in freeze dryer. Cotton, wool, silk and nylon fabrics were dyed under several conditions using the manufactured squid ink to investigate the dyeability and color fastness. Dyeing was operated in acidic dyebath of pH 4 because the squid ink is anionic. Dyeabilities on wool, silk and nylon fabrics were good, especially silk fabrics were dyed deeper than others because of being amine group. But dyeability on cotton fabrics was low and developed with chitosan treatment. All the dyed fabrics showed excellent in color fastness to crocking and laundering. Also light fastness of them were excellent except nylon. The light fastness of dyed-nylon fabrics was as poor as grade 1, but they could be improved to grade 4 by aftertreatment with gallicacid. Useing the natural dyestuff-squid ink powder, we could execute whenever we want to dye fabrics in the adequate concentration. Dyeabilities were developed according to repeating times of dyeing and the increased dye concentration. We could recycle the wasting sources.

• Textile Coloration and Finishing
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• v.7 no.3
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• pp.1-10
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• 1995

The optical behavior of coloring matter extracted from onion's coats, the depression effects of destruction, yellowing and W transmittance of silk treated with color solution of onion's coats color difference of silk fabrics dyed with acid dyes and drycleaning fastness of silk treated with color solution has been investigated. The results are as follows : 1) The coloring matter extracted from onion's coats by alkali-acid method appeared properties of aglycon type. 2) &{\lambda}_{max}&of color solution extracted by distilled water was found at 280 and 327nm. 3) The decrease of tensile strength and the elongation of the silk treated with color solution were depressed but those of untreated silk were increased by irradiation of UV light. 4) The yellowness index of silk treated with color solution showed a little change by irradiation. 5) The UV transmittance of silk treated with color solution was decreased as increasing concentration of color solution. 6) The color difference after dyeing with several acid dyes on treated and untreated silk fabrics showed remarkable changes. 7) Drycleaning fastness of silk treated by color solution was excellent.

• Journal of Food Hygiene and Safety
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• v.3 no.1
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• pp.37-40
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• 1988

A great deal of attention has been directed recently at the roles played by lipidperoxides in the mediation of pathogenesis and complications of various disease. In view of the strong inhibitory activity of Brazilin on the lipidperoxidation, we examined the effect of Brazilin on the lipidperoxidation in diabetic states. Brazilin inhibited the lipidperoxidation of liver mitochondrial and microsomal fraction in alloxan-induced diabetic ICR mice in the dose and time dependent manner. In the light of the present results, further elucidation of the inhibitory activities of Brazilin on the liver and blood plasma is warrented.