• 한국지역사회생활과학회지
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• 제17권4호
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• pp.39-48
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• 2006

This study was carried out to make a search for the usefulness of marigold plants (Tagetes erecta) as a natural dye. And we have also examined into the dyeability and antifungal activity of silk and cotton fabrics dyed with 2% powdered colorant and 1% liquid colorant. Almost surface colors of silk and cotton fabrics dyed with 2% powdered colorant and that dyed with 1% liquid colorant except for that treated Cu and Fe with mordants were shown by Y-level. $L^*$ values of silk fabrics dyed with 2% powdered colorant were 66.2 to 86.39, those $a^*$ values were -1.97 to 6.09, and those $b^*$ values were 13.69 to 35.97. And $L^*$ values of cotton fabrics dyed with 2% powdered colorant were 78.97 to 89.62, those a values were -3.39 to 0.38, and those $b^*$ values were 5.63 to 15.61 $L^*$ values of silk fabrics dyed with 1% liquid colorant were 34.37 to 85.57, those a values were -7.79 to 12.33, and those $b^*$ values were 15.13 to 82.91, And $L^*$ values of cotton fabrics dyed with 1% liquid colorant were 44.12 to 87.90, those $a^*$ values were -8.37 to 6.18, and those $b^*$ values were 11.65 to 78.87. Colorfastness of silk fabrics against light treated nothing with mordants and that dyed with 1% liquid colorant decreased for a little by second grade, however, that against washing, rubbing, perspiration and dry cleaning were increased over fourth grade. Colorfastness of cotton fabrics in terms of rubbing, light, and dry cleaning, except for washing and perspiration, were shown by over third grade, when that was treated nothing with mordants. Antifungal activities of silk fabrics treated nothing with mordants and dyed with 1% liquid colorant of marigold extracts were shown by 28.9% against Staphylococcus aureus. However, those of Al, Ca, Cu and tartaric acid mordanting were more than 25.5% against Staphylococcus aureus and Klebsiella pneumoniae.

• 한국작물학회지
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• 제58권2호
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• pp.177-184
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• 2013

쪽 두 품종, 나주재래종과 나람블루를 사용하여 높은 생엽수량 및 색소함량을 얻기 위한 적정한 이식시기와 수확시기를 알아보고자 수행한 재배시험 결과, 대체적으로 두 품종 모두 비슷한 경향을 나타냈다. 이식시기가 늦을수록 생엽수량은 감소하는 경향을 보였으며, 이식시기 시험구간 다소 차이가 있었지만 니람이나 색소함량은 유의한 차이를 보이지 않았다. 수확시기가 늦어질수록 초장, 분지수, 생엽수량은 증가하는 경향을 보였지만, 니람함량은 8월 20일까지 증가하다가 이후 정체하거나 감소하는 경향을 보였다. 수확시기에 따른 인디고 함량 변화는 8월 5일에 가장 높은 함량을 보였고 이후 감소하는 경향을 보였다. 따라서 쪽 재배에서 높은 생엽수량과 색소함량을 얻기 위해서는 가능한 이르게 이식하는 것이 좋으며 8월 초순경에 수확하는 것이 유리한 것으로 판단되었다.

• 한국염색가공학회지
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• 제20권6호
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• pp.42-50
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• 2008

The objective of this study is to investigate the efficacy of pomegranate hull colorant as a natural hair coloring dye. The extract of pomegranate hull was concentrated and freeze-dried to get colorant powder. Effect of dyeing condition and mordanting on the dye uptake of hair by using Al, Fe, Cu, Cr, Sn compounds, color change and colorfastness were explored. In addition, tensile strength was measured and the surface of the hair was observed. Dye uptake of hair measured by K/S value (400 nm) indicated that ionic bonding seems to be involved in the sorption of pomegranate colorant to hair. Maximum sorption was obtained at pH 3.5 and the concentration of 50% (on the weight of hair, o.w.h.). Acidic dyeing condition (pH $3.5{\sim}5.0$) showed yellow color however alkaline dyeing condition (pH $7{\sim}11$) gave reddish yellow color. Pomegranate hull colorant produced greyish brown color on hair and the hair mordanted with Fe showed dark brown color. Mordants except Fe did not increase dye uptake significantly. Mordants except Cu increased light fastness and mordants except Cr increased washing fastness level slightly. According to SEM observation and the tensile strength retention measurement, the mordant dyed hair gave more damage to hair by ultraviolet light and washing than the hair dyed without mordanting. Experimental results of K/S value and colorfastness(light and washing) supported that pomegranate hull colorant without mordanting can be used as a semi-permanent natural hair coloring dye.

• 한국작물학회지
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• 제57권3호
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• pp.209-214
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• 2012

나주재래종과 새로이 선발된 나주2호의 지역별 재배시험 결과, 초장은 나주2호가 다소 컸으며, 분지수는 나주재래종이 나주2호 보다 많은 경향이었다. 엽면적은 나주2호가 더 넓었으며, 엽장폭비도 나주2호가 더 크게 나타나 둥근 잎 특성의 안정성을 보였다. 두 계통의 지상부 생중과 건중은 큰 차이가 없었으나, 지상부 전체에 대한 엽의 무게 비율은 나주2호가 더 높아 색소수율면에서 유리하였다. 인디고(indigo) 성분과 니람(泥藍) 함량은 나주2호가 나주재래종 보다 높게 나타났으며 실크로 생엽 이용 염색을 한 결과 청색을 더 많이 나타냈다. 따라서 엽 수량이 높고 색소 품질이 좋은 나주2호가 쪽 재배에 유리한 계통으로 판단되었다.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2002년도 생물공학의 동향 (X)
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• pp.129-130
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• 2002

Monascus pigment was produced by Monascus species. During Monascus fermentation, citrinin, the mycotoxin was produced with pigments. Citrinin can become a problem for use of monascus pigment as a food colorant. We found adding of S. cerevisiae filtrate during Monascus cultivation could enhance production of red pigment whereas it could reduce citrinin level. When we added the filtrate at 24 hand 48 h, respectively, pigment production increased about 400% and citrinin concentration decreased to 30%. In a glucose medium, there was no special effect by addition of filtrate. On the other hand, the effect was striking in a sucrose medium.

• Journal of Microbiology and Biotechnology
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• 제16권7호
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• pp.1084-1089
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• 2006

The fructus of Gardenia jasminoides Ellis (GF) has been widely used as a natural colorant in Asian countries, and also as a Chinese traditional medicine for its homeostatic, antiphlogistic, analgesic, and antipyretic effects. In the present study, its main component, crocin, was fermented with lactic acid bacteria (LAB) and their antihyperlipidemic activity was measured. The GF extract, fermented GF (F-GF), crocin, and fermented crocin (F-crocin) significantly inhibited the increase of serum triglyceride (TG) level in corn oil feeding-induced triglyceridemic mice, as well as that of serum TG and total and LDL cholesterol levels in Triton WR-1339-induced hyperlipidemic mice. These agents also showed hypolipidemic activity in hyperlipidemic mice induced by high fat diet for 5 weeks. F-GF and F-crocin exhibited more potent hyperlipidemic effects than GF and crocin. The results suggest that the hypolipidemic effect of GF and crocin can be synergistically activated by LAB, and that F-GF and F-crocin may improve hyperlipidemia in clinic, compared with GF and crocin.

• 한국의류학회지
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• 제25권1호
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• pp.3-12
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• 2001

The dyeing powder drawn out from Dryopteris crassirhizoma by water was concentrated. Using this powder, the silk and the cotton fabrics were dyed and they measured with the K/S value, surface color, mordant quantity in order to evaluate the dyeability, antimicrobial and deodorant properties. The colorant of Dryopteris crassirhizoma was proved flavonoids by FT-IR spectrum. The K/S values of silk were much higher than those of cotton, the color yield of the silk and cotton fabric were most efficient the postmordanting method. The surface colors on the dyed fabric depended heavily upon mordants used or mordanting methods. For all cases, the value of the dyed fabric was generally dark. The chroma produced clear for the Al-mordant of silk and the Cu-mordant of cotton in the 3% concentration of mordants, the color difference was distinct when using the Fe-mordant. The K/S values of cationized cotton were much higher than cotton. The color fastness was significantly improved when mordants were added, In the case of the light fastness, Fe and Cu-mordants improved more than 1 level. The Cu-mordant showed the greatest antimicrobial and deordarant activity on both of the silk and the cotton.

• 한국의류산업학회지
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• 제3권2호
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• pp.162-167
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• 2001

The dyeing powder drawn out from Cinnamoum cassia by water was concentrated. Using this powder, the silk fabrics were dyed and they measured with the K/S value, surface color, dye fastness and antimicrobial properties. The colorant of Cinnamoum cassia was proved flavonoids by FT-IR spectrum. The K/S values of silk by mordants concentration were much higher than those of high-concentration, the color yield of the silk fabrics were most efficient the premordanting method. The surface colors on the dyed fabric depended heavily upon mordants used or mordanting methods. For all cases, the value of the dyed fabric was generally dark except AI-mordant. The chroma produced clear for the unmordanting, the color difference was distinct when using the Fe-mordant. The color fastness was significantly improved when mordants were added. In the case of the light fastness, Cu-mordants improved more than 1-2 level. The Cu-mordant showed the greatest antimicrobial activity on the silk fabric.

• 패션비즈니스
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• 제20권5호
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• pp.76-86
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• 2016

In this research, the dyeing properies of Amur cork tree on sheep leathers were evaluated. The proper dyeing conditions were identified with K/S values depending on the colorant concentration, dyeing time, dyeing temperature and dye bath pH. For the proper conditions, the changes of color for different mordants(Al, Cu and Fe) were observed as $L^*a^*b^*$ coordinates and H V/C values. The color fastnesses were also examined, and the antimicrobial properties were examined. The results were as follows: For the sheep leather, the optimized dyeing conditions were 300% o.w.f., 40 min., $40^{\circ}C$, and pH 5. The leather color was yellow in the dyeing and mordanting. Although the $L^*a^*b^*$ changed with the mordants and mordanting methods, the overall hue was yellow. The colorfastness to light was reduced compared to original(untreated) sheep leather. The rubbing fastness was generallry satisfactory as 4-5 rating. The dry-cleaning fastness(stain) of leathers were generally at the 4-5 level, but dry-cleaning fastness(fade) was a little reduced compared to original sheep leather. The dyed and pre-mordanted and dyed sheep leather showed excellent antimicrobial properties.

• 대한화장품학회지
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• 제24권3호
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• pp.73-80
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• 1998

This Study was performed to get the suitable oil dispersion agent by assessment of color strength of organic pigment in non-aqueous systems. Organic pigment is used as a color expression material with other body pigments in the make-up products. But occasionally aggregation or agglomeration occurs for the lack of affinity with medium, This function is the cause of disturbing homogeneous dispersion, and then bring about an instability of products. Our study, research of dispersion mechanism between the pigment and oil phase, has been executed to solve this problem, and find a oil dispersion agent having optimum dispersion condition. Generally dispersion is related to between the solid-liquid mutual properties and electrical phenomena associated with solid-liquid interface. This factor is determined to input energy, milling time, optical properties, particle size, rheological properties, etc. Ideal dispersion state is told that coloring primary solid particle is homogeneously dispersed in medium. Good dispersed colorants are strongly and clearly appeared. We are already known that the particle size of organic pigment, chemical properties and viscosity of medium, refractive index. Consequently We determine the affinity of medium and organic pigment by measuring of color strength in the same mechanical condition. UV-VISIBLE RECORDING SPECTRO PHOTOMETER is used for measuring apparatus. We can decided the dispersion level of oil dispersion agent by measuring absorbance of color strength in the visible range that diluted medium for colloid colorant particles.