• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2011.03a
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• pp.48-48
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• 2011

오디를 약제나 식용으로 사용되고 있는 염색재료를 이용한 천연염색은 화학염료의 잠재적인 인체독성이나 알르레기 유발 가능성을 간단하게 극복할 수 있는 대안 중의 하나이다. 따라서 약리 효과를 갖는 식물을 염색 재료로 이용하여 다양한 색상 뿐 아니라 피부와 인체에 유익한 약성을 발휘하는 천연염색이 최근 각광을 받고 있다. 한편 천연색소에 대한 관심이 높아짐에 따라 식품이나 화장품 등에 첨가하여 기능성을 높이고자 하는 연구도 진행중으로 오디에 함유된 anthocyanin 색소를 이용하기도 한다. 본 연구에서는 상주지역에서 생산하는 식용오디를 경기도 남양주에 위치한 아세아기공사에서 제작한 생즙추출기로 문경시 수평면에서 위치한 이젠하우스에서 추출한 오디생즙을 구입하여 염색의 재료로 사용하였다. 처리 섬유의 무게를 200g 으로 하여, 욕비 1:10 으로 하여 처리액을 2000g 고정하였다. 처리시에 오디추출액의 비율을 10%(200g+1800g), 20%(400g+1600g), 30%(600g+1400g), 40%(800g+1200g), 50%(1000g+1000g)으로 조정한 염색액에 면, 레이온, 견, 옥사를 처리온도, 처리농도를 달리하여 실험하였다. 처리온도를 $40^{\circ}C$, $60^{\circ}C$, $80^{\circ}C$ 로 하였으며, 처리시간은 1시간으로 동일하게 실험하였다. 처리후에 매염시간은 $60^{\circ}C$에서 1000g의 매염제로 철, 구리, 명반의 1% 용액에 10분간 처리하였다. 실험후 온도에 따른 염색의 정도와 처리농도, 매염제 처리전후의 염색성을 비교하기 위하여 색차값를 측정하였다.

• Journal of Sericultural and Entomological Science
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• v.37 no.2
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• pp.161-166
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• 1995

Safflower is natural red dye largely used for dyeing on protein and cellulose fabric. It contains safflower yellow and carthamin red. Safflower yellow is water-soluble dye, while carthamin red is soluble in alkaline condition. Therefore the former was extracted by cold water. Cartamon obtained by adding acidic solution to carthamin red shows the original hue of safflower. In this study, the condition of extraction with bean stem ash solution and dyeing behavior of carthamon in safflower were examined by using the traditional dyeing method. The relationship between the dye-uptake(K/S) of silk and ramie fabric and the various extractions and dyeing conditions was investigated.

• FLOWER RESEARCH JOURNAL
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• v.18 no.1
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• pp.66-72
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• 2010

This experiment was conducted to examine the treatment conditions for single-color dyeing using the variety 'Akito' which was selected based on the flower size, density, blooming shape, elegance, expression of the dying color. The optimal conditions of dyeing rose flower were pH 3.5 under the $20-25^{\circ}C$, in which the vase life showed 15 days as longest after dyeing. The most suitable flower stage for dyeing was identified as second or third stage at which three petals of flower are opened. $10g{\cdot}L^{-1}$ concentration of dyeing solution with $2mL{\cdot}L^{-1}$ treatment of spreader for rose dyeing gave the best color performance.

• Journal of Sericultural and Entomological Science
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• v.44 no.2
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• pp.93-98
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• 2002

Effect of reducing agent sodium hydrosulfite on the natural indigo on the silk fabrics were examined to improve traditional dyeing method. K/S values of dyed fabrics was monitored with various dyeing temperature time, amount of dye and reducing agent. The dyeability of silk fabrics was improved by using reducing agent, sodium hydrosulfite; K/S value (7.20) was higher then that (1.09) of traditional method at the frist dyeing. Natural indigo dye extracted from dyed silk fabrics are composed of isomer, indigo (67.3%) and indirubin (32.5%). However, silk fabrics showed excellent anti-microbial activity regardless of the dyeing methods.

• Journal of Sericultural and Entomological Science
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• v.41 no.1
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• pp.61-69
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• 1999

The dyeing experiments were done by using tannin pigments and herbs for natural fabrics such as ramie, hemp and silk. The anti-bacterial ability and color fastness were examined for dyed fabrics. Dye materials containing tannin pigment such as oak tree leaf showed rich dyeing on ramie, hemp, and silk fabrics when the pH of dye solution is lower as well as the dyeing temperature is higher. In crimson dyeing, the colour of fabric showed red-purple when the crimson pigment was extracted at 40$^{\circ}C$, while yellow-red when extracted above 70$^{\circ}C$. The colour fastness of dye materials containing tannin pigment was excellent showing 3~4 grade or above, while most of those derived from chinese medicine showed poor colour fastness of below 3 grade. The anti-bacterial ability of dye materials derived from chinese medicine was high, since the sappan wood fabric showed low bacteria reduction rate.

• Textile Coloration and Finishing
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• v.15 no.1
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• pp.30-38
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• 2003

Research to dyeing properties of Ulmi cortex extract, silk and cotton fabrics were dyed and mordanted. Dyes were extracted from distilled water according to different pH values. The dyeability of Ulmi cortex extract were evaluated by conditions of dyeing temperature, dyeing time, dyeing pH, mordanting temperature, mordanting time, mordanting concentration and color fastness, etc. IR spectrum possessed absorption band of -OH at $3400cm^{-1},\;C-H\;at\; 2940cm^{ -1},\;aromatic\;C=C\;at\;1628cm^{-1},\;1518cm^{-1},\;C-O\;at\; 1107cm^{ -1},\;1043cm^{-1}$. And the $\labmda$max of extract appeared at 220nm and 280nm, so the substance of Ulmi cortex extract were catechin and tannin. Surface color of dyed fabrics were reddish yellow~yellow~greenish yellow. From the color fastness test, the fabrics dyed with PH 7 extract were excellent in irradiation and washing. Mordanting improved the color fastness and K/S value of dyed fabrics.

• Korean Journal of Plant Resources
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• v.18 no.3
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• pp.417-423
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• 2005

In order to investigate effects of dyeing conditions on the dyeing characteristics in silk during natural dyeing using indigo plants , various dyeing conditions including the temperature of dyeing solution, dyeing period, the concentration and pH of dyeing solution and mordants were treated. As the temperature of dyeing solution decreases low, the color of silk surface showed lower b value. The color of silk surface showed G line when the dyeing solution was $-5^{\circ}C$ and room temperature and GY line at more than $40^{\circ}C$. Coloring degree increased high as the temperature increases. Dyeing period showed no effect on the surface color, but as dyeing period was longer the coloring degree increased. When the concentration of dyeing solution was $1\~4\%$, the silk was colored to BG line and $5\%$ to B line. The coloring degree increased as the concentration of dyeing solution more increased. The pH of dyeing solution sensitively affected coloring of silk. The pH lower than 7 showed G line, pH 8 showed GY line and pH 9 showed YR line. Coloring degree decreased as pH was more increases. Surface color of silk was different according to the kinds of natural mordants and coloring degree was increased by the natural mordants.

• Proceedings of the Korea Society of Costume Conference
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• 2004.08a
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• pp.304-305
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• 2004

• Korean Journal of Food Science and Technology
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• v.4 no.4
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• pp.235-238
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• 1972

A biuret method by Johnson and Craney (1971) was slightly modified and applied to the multiple analysis of nitrogen in brown rice. The results were compared with those by the dye-binding method to see if the former be applicable to the determination of higher nitrogen content in rice. The nitrogen content of rice samples ranged from $1.2{\sim}2.0%$. The correlation between biuret absorbance and nitrogen content was highly significant; its correlation coefficient being 0.841. The biuret method, however, showed rather lower correlation coefficient in case of high nitrogen samples.

• Journal of Sericultural and Entomological Science
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• v.38 no.2
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• pp.175-179
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• 1996

The sappan wood dyeing conditions and mordanting methods suitable for ramie as well as silk were investigated. The HVC values of dyed silk ramie fabrics were varied by the amount of sappan wood in the dyeing bath, while the optimum weight of sappan wood for the extraction of dye was around 15g/l. The K/S value of dyed silk fabric showed no significant difference in the pH range of 3.5 to 6.5. However, the K/S values of dyed ramie fabric was increased proportion to the pH value of dye bath. The K/S value of dyed silk and ramie fabrics were most increased at the highest dyeing temperature in the range of 30 to 9$0^{\circ}C$. By various mordantings, the HVC values of dyed silk and ramie fabrics were differentiated and it's color fastness could be improved.