• 한국식품과학회지
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• 제32권1호
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• pp.50-55
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• 2000

수용성 methyl-hesperidin(MH)분말을 원료 MH로부터 제조하였으며, 천연색소의 안정화를 검토하였다. 원료 MH (8%)를 중류수와 혼합한 다음 $45^{\circ}C$에서 24시간동안 교반하여 용해시켰고, 분말 활성탄으로 탈색한 다음 0.45m 막여과를 통해 정제하였다. MH분말을 0.1 또는 0.2%농도로 riboflavin, bixin, 그리고 paprika oleoresin색소용액에 첨가하여 10에서 24시간 동안 자연광에 노출시킨 후 색소용액의 흡광도를 측정하였다. 수용성 MH를 첨가하지 않은 색소용액은 시간 경과에 따라 완전히 퇴색된 반면 MH를 첨가한 경우는 색소의 퇴색을 지연시켰다. 대체로 수용성 MH의 첨가량이 증가함에 따라 더욱 우수한 색소 안정화 효과를 나타내었다. 특히, paprika색소용액에서 수용성 MH와 함께 첨가한 비타민 C는 자연광에 노출시 8시간까지는 뚜렷한 상승효과를 나타내었다. 상기 결과를 통해 수용성 MH는 태양광의 자외선에 대해 우수한 색소 안정화제로서 작용함을 알 수 있었다.

• 한국의류학회지
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• 제11권3호
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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.

• 한국염색가공학회지
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• 제7권3호
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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.

• 한국염색가공학회지
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• 제12권4호
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• pp.239-247
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• 2000

The coloring matter was extracted from the heartwood of Amur cork tree by distilled water. Change of UV-Visible spectra of coloring matter solution by extraction condition and stability for irradiation were determined, and the effect of repeated dyeing with condition of dyebath and mordanting method on shade depth and lightfastness were also investigated. The results are as follows : 1) Absorbance of Amur cork tree extract increased with the lapse of extraction time. λmax of color solution extracted from Amur cork tree was found at 420, 333, and 262nm. 2) Absorbance of Amur cork tree extract decreased remarkably after 2hr irradiation. 3) The K/S of silk fabrics increased with the increase of dyeing temperature, time, amounts of Amur cork tree for extraction, and pH of color solution. 4) K/S of silk fabrics dyed by repeated dyeing method was affected by pH and concentration of color solution. 5) Lightfastness of silk twice dyed with Amur cork tree extract after pre-mordanted by 8%(o.w.f) chromium acetate was moderately improved.

• 한국의류학회지
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• 제13권4호
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• pp.370-379
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• 1989

In previous paper, the optical behavior of coloring matter of Cromwell under several conditions were investigated. In this paper, the fading behavior of color solution extracted from Growell by methanol, dyeing properties of this color on the silk fibers in water and methanol, the three property of color of dyed silk fabrics, and fading behavior of dyed silk fabrics with Cromwell color under light and washing were discussed.

• 한국의상디자인학회지
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• 제10권2호
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• pp.1-10
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• 2008

Yellow, one of the five direction colors, is a prevailing color in artificial dyeing. The color has implied and symbolized wealth and power since ancient times. Yellow has been extracted mainly from flowers. Shapes, colors and scents of flowers not only have enriched emotional mentality, but have also been used for medicinal herbs, and dyestuff since the very old days. Coloring matter from flowers is very beautiful, and it has been used for dyeing textiles. Textile dyeing have formed a color culture and developed a dyeing culture since ancient times. Flowers include a variety of color matters, and can be easily obtained around us. Therefore, flowers have been a widespread natural dyestuff. It is well known that beautiful colors can be extracted from flowers, which are eco-friendly and non-polluting. In addition, flowers are easily provided. In this study, yellow wild flowers were selected as subjects. Seven flowers with color matters distiguishable through the naked eye were used: Korean forsythia, golden-wave, Mongolian dandelion, sunflower, conflower, chelidonium and chrysanthemum. Coloring matters were extracted from the seven flowers, which have been used to create a variety of colors through various dyestuffs; and the colors have been analyzed and presented. Dyeing and coloring matters were tested and analyzed, and several types of dyestuff had also been scientifically measured after treatment.

• 한국염색가공학회지
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• 제31권4호
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• pp.241-248
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• 2019

In this study, improving the wash and rubbing fastness of a natural coloring matter from Madder extract dyed on Tencel nonwoven. The cationic finishing agent(RBP), nonionic finishing agent(HPX) and mordant(PAW) were used to improving the color fastness. The two types(exhaustion and pad-dry-cure) finishing process were investigated with various finishing agent concentration. The color strength, wash and rubbing fastness of Tencel nonwoven dyed with Madder extract have been evaluated by various dye concentration and finishing agent. The exhaustion process treated with the cationic finishing agent(RBP) was effective to improving washing and rubbing fastness.

• 한국포장학회지
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• 제24권2호
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• pp.49-56
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• 2018

인쇄형 TTI의 잉크로 천연물질인 안토시아닌의 적용 가능성을 확인하기 위해 실제 인쇄형 TTI를 제작하여 색 변화를 확인하였다. 안토시아닌은 반응속도가 느려 TTI에 적용이 어렵다. 이를 해결하기 위해 ${\beta}$-글루코시다아제를 이용하여 안토시아닌의 탈당화를 유도하여 보다 불안정한 안토시아니딘 잉크를 제작하였다. 그리고 인쇄형 TTI로 제작이 적합한지 확인하기 위해 인쇄적성을 확인하고 적용가능한 식품군을 탐색하였다. 실험결과, 인쇄적성의 경우, 틱소트로피의 히스테리시스 성질을 나타내어 인쇄적성이 적합한 것으로 확인되었다. 색 변화의 경우, 같은 온도와 pH 조건 하에서 안토시아닌 TTI의 색 변화 속도보다 안토시아니딘 TTI의 색 변화속도가 빠른 것을 확인할 수 있었다. 또한, 안토시아닌 인쇄형 TTI의 활성화 에너지는 65.21 kJ/mol, 안토시아니딘 인쇄형 TTI의 활성화 에너지는 86.92 kJ/mol로 확인되었다. 이는 ${\beta}$-글루코시다아제를 처리한 안토시아닌의 탈당화가 안토시아닌의 반응속도를 빠르게 할 뿐만 아니라, 활성화 에너지도 증가시킨 것으로 사료된다. TTI의 활성화 에너지와 식품의 활성화 에너지를 비교한 결과, 안토시아닌 TTI는 냉장 육제품에 한정적으로 적용 가능하였다. 반면에 안토시아니딘 TTI는 냉장 육제품과 냉장 어류에 적용 가능하였다. 하지만, 안토시아닌 TTI는 색 변화 종말점에 도달하는 시간이 길기 때문에 냉장 육제품에 적용이 어려울 것으로 사료된다. 반면 안토시아니딘 TTI의 경우, 색 변화 종말점에 도달하는 시간이 짧기 때문에 냉장 육제품과 냉장 어류에 적용이 가능할 것으로 사료된다.

• 대한가정학회지
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• 제32권1호
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• pp.229-238
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• 1994

The purpose of this study was to investigate the objectification of coloring matter abstraction of the way to natural dye by cathamus flower. Watersoluble carthamin in the dyeing cathamus flower was removed for the fastness of dyeing and only insoluble carthamon was abstracted which came by solvent such as Sodium hydroxide(NaOH) Potassium hydroxide(KOH) Sodium carbonate(Na2CO3)and Potassi-um carbonate(K2CO3) Carthamon made abstract essence from a carthamus flower out of the pH6, pH7, pH9, pH11, solvent and by using a UV/VIS Spectra according to the change of pH. Silk dyes with solution abstract carthamon and it was treated by 5 kinds of mordant. The table of surface-colors was measured by the number of dyeing the color of silk dyed and by the kind of mordant which treated with and the dyeing was evaluated by measuring Color Fastness to Light and Washing.

• 대한가정학회지
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• 제38권9호
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• pp.119-130
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• 2000

The purpose of this study was to confirm the possibility of screen printing with Natural dyes. The coloring matter such as sappan wood was used in order to obtain the colorant powder through the processes of extraction, low pressure concentration and the spray dry. After the screen printing on silk and cotton fabrics with colorant, K/S value changes of color and color fastness were measured. The main resets were as follows : 1. The viscosity of printing thickeners of sappan wood powder was about 15,200 cps, and the highest K/S value of the fabrics printed with sappan wood was obtained at 90$\pm$2$\^{C}$ of steaming temperature and 80 minutes of steaming time. 2. For the fabrics printed with sampan wood, adding of urea was not effective, since the more the concentration of urea increased, the more K/S values decreased. 3. For the natural dyes printing, the more the concentration of colorants increased, the more K/S values increased. In general, the K/S values of the printed fabrics were higher when treated with mordants rather than without mordants. Specifically, the λmax sappan wood was 520∼570 nm, and the K/S value was highest when treated with Cu mordant and lowest when treated with Sn. 4. Generally, the color fastness was relatively fair.