• 한국염색가공학회지
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• 제12권5호
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• pp.315-322
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• 2000

The purpose of this study was to investigate the antibacterial effects of natural colors extracted from yellow natural dyes(Tumeric, Amur Cork Tree and Onion Shell). The water and the methanol extracts of Tumeric and Amur Cork Tree significally decreased the growth of E. coli in vitro and the methanol extract of Tumeric exhibited the strongest inhibitory effect among the samples. Silk and nylon fabrics dyed with water and methanol extracts of the yellow natural dyes showed antimicrobial activities against E. coli and Staph aureus in the Bioassay Test. Nylon fabric dyed with methanol extracts of them showed strong antibacterial effect on E. coli compared with that of water extracts. However, slik fabrics dyed with the extracts could not reduce the growth of E. coli. Silk or nylon fabrics dyed with methanol or water extracts of yellow natural dyes showed antimicrobial activities against Staph aureus. The antimicrobial activity of the fabrics dyed with methanol extracts from Tumeric, Amur Cork Tree and Onion Shell was stronger than that of water extracts, especially, the fabrics dyed with Tumeric extract showed the highest antibacterial property among the dyed fabrics.

• 한국염색가공학회지
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• 제12권6호
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• pp.396-403
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• 2000

The purpose of this study was to investigate the dyeing properties of silk, wool, nylon and poly(ethylene teraphtlate)〔PET〕 fabrics dyed with Tumeric(Curcuma longa) extracts. The dyeing property and color fastness were investigated by using the extracts and the post mordanting with Aluminum, Copper and Iron salts. In the UV-visible spectra, the maximum absorption of wavelength of the extract with methyl alcohol appeared at 420nm, and that of the extract with distilled water was at 415nm. Increasing the dyeing temperature, the K/S values of dyed fabrics were increased. The optimum dyeing condition was 30∼60 minute of dyeing time at pH 5∼5.6. Surface colors of silk and wool became dark by using mordants compared to those of nylon and PET fabrics. The drycleaning fastness of fabrics dyed with the extracts was good. The laundering and light fastness were improved by using mordants.

• 한국염색가공학회지
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• 제28권1호
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• pp.1-13
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• 2016

Natural colorant extracts were obtained by extraction from tumeric root, gardenia seeds, mugwort and green tea using water, methanol, ethanol and acetone as extractants at room temperature for 3 hours under shaking condition(180rpm) with liquor ratio(solid:solvent; 1:100). The main pigment components of tumeric root, gardenia seeds, mugwort and green tea are known to be curcumin, crocin, chlorophyll b and epigallocatechin gallate, respectively. The effects of the kind of extractant and pH on the color characteristics of natural colorant extracts were investigated. The solubility parameters of pigment components were determined to find adequate extractant. The solubility parameters of curcumin, crocin, chlorophyll b and epigallocatechin gallate were found to be 27.85, 29.40, 19.48 and $37.97(J/cm^3)^{1/2}$. As expected, solvents that have a solubility parameter similar to that of pigment component were generally found to be effective to obtain pigment extracts having high visible absorbance(A). The extract(pigment/solvent) with high visible absorbance was generally found to have low $L^*$(lightness) and high Chroma($C^*$, purity).

• 한국의류학회지
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• 제26권2호
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• pp.325-336
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• 2002

This study investigated color change of combination dyeing silk fabrics dyed with Turmeric extracts and Gardenia extracts after dyeing of Indian indigo. Experimental variables include the condition of dyeing time and concentration of Turmeric extracts, Gardenia extracts, arid dyeing cycle of Indian indigo. Surface color of silk fabrics dyed with Turmeric 77tracts after one cycle dyeing, two cycles dyeing, four cycles dyeing of Indian indigo was changed from 5.1GY to 0.3GY, 1.5G to 3.5GY and 6.5G to 5.8GY by increase of concentration of Turmeric extracts. On the other hand, Surface color of silk fabrics dyed with Gardenia extracts after one cycle dyeing, two cycles dyeing, four cycles dyeing of Indian indigo was changed from 7.5Y to 3.9Y, 1.2GY to 6.7Y and 4.0GY to 8.6GY by increase of concentration of Gardenia extracts. Its range of surface color was changed to green and yellowish green by increase of dyeing time with concentration of Turmeric extracts. On the other hand, its range of surface color was changed to yellowish and yellow by increase of dyeing time with concentration of Gardenia extracts.

• 한국식품저장유통학회지
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• 제5권1호
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• pp.81-87
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• 1998

Antimicrobial activities of the extracts from spices microorganisms related to kimchi fermentation were investigated. 32 kinds of spices such as allspice, mount, basil, bay leaves, caraway, cardamon, celery, chilli powder, chives, cinnamon, clover, coriander, cumin, dill, fennel, garlic, horseradish, marjorarm, mugwort, mustard, nutmeg, onion, oregano, paprika, parsely, pepper, peppermint, rosemary, sage, tarragon, thyme and tumeric were extracted with water, ethyl ether, ethyl acetate and ethanol. Fractions were tested for antimicrobial activities against Lactobacillus plantarum and Leuconostoc mesenteroides, The extracts of 28 kinds of spices except caraway, cardamon, paprika and tarragon by water extraction, those of 29 kinds except arrowroot, paprika and tarragon by ethyl ether extraction, those of 30 kinds except paprika and tarragon by ethyl acetate extraction, and those of 29 kinds except clover, paprika and tarragon by ethanol extraction showed strong antimicrobial activities against Lactobacillus plantarum. On the other hand, the extracts of 28 kinds of spices except caraway, cardamon, paprika and thyme by water extraction, those of 27 kinds except cardamon, cumin, paprika, tarragon and thyme by ethyl ether extraction, thou of 30 kinds except paprika and thyme by ethyl acetate extraction, and those of 28 kinds except cardamon, cumin, paprika and thyme by ethanol extraction showed strong antimicrobial activities against Leuconostoc mesenteroides.

• 한국식품과학회지
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• 제36권2호
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• pp.317-320
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• 2004

Curcumin의 추출효율은 에탄을 추출방법이 가장 높았고, 항산화효과는 에탄올, 초임계, 열수 추출물 순으로 나타났다. Ames의 mutagenicity test를 실시한 결과 각각의 추출물은 돌연변이원이 없는 것으로 확인되었고, TA98에 직접변이원 2-NF 처리시 초임계 추출물의 저해율이 20.1%로 에탄올과 열수 추출물에 비하여 가장 높은 항돌연변이 효과를 나타냈다. 또한 간접 변이원 2-acetamidofluorene($10\;{\mu}L/plate$; Sigma Co.; 2-AF)에 대한 항돌연변이 효과를 알아본 결과 2-AF로 유도된 TA98은 초임계 추출물을 0.1 mL/plate로 처리시 항돌연변이의 효과는 12.2%였으며, 알코올 추출물과 열수 추출물의 경우는 항돌연변이 효과가 나타나지 않았다. Nitrite의 분해능의 경우에 있어서도 에탄올 및 열수 추출물에 비하여 초임계 추출물이 높은 분해율을 나타냈으며 pH 1.2에서 가장 높은 분해율을 보였다. 이와 같이 초임계를 이용해 추출한 curcumin은 항산화효과, nitrite 분해능, 항돌연변이효과 등에 대한 생리활성 기능을 보였으며, 기존의 에탄올이나 열수 추출법에 비하여 유사하거나 더 높은 생리활성 효과가 나타나기도 했다.

• 한국균학회지
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• 제39권2호
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• pp.105-110
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• 2011

본 연구는 현미에 미강, 솔잎 그리고 강황을 첨가한 장수버섯 배양물의 전자공여능, 아질산염 소거활성, tyrosinase 저해활성, ACE 저해활성 및 혈전용해 활성을 검토하고자 수행되었다. 전자공여능은 에탄올 보다 열수를 이용한 추출물에서 더 높았다. 아질산염 소거활성은 솔잎첨가 에탄올 추출물에서 가장 높았고 소거활성은 거의 50%였다. tyrosinase 저해활성은 열수이용 추출물에서 가장 높았고 미강, 솔잎 그리고 강황 첨가에 의한 저해율은 장수버섯 열수 추출물에서 각각 72.49%, 87.34% 및 82.75%를 보였다. ACE 저해효과는 모든 물과 에탄올 추출물에서 매우 낮은 효과가 있었다. 혈전용해 활성은 미강, 솔잎, 강황에서 유사하게 높았다. 특히 미강 그리고 강황이 첨가 되었을 때 활성이 plasmin보다 약 10% 증가 되었다. 따라서 동물 실험과 같은 추가 연구가 진행 후, 천연소재로서 식품 및 화장품 산업에 이용될 수 있을 것이다.

• 한국균학회지
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• 제39권2호
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• pp.111-116
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• 2011

본 연구는 미강과 솔잎, 강황을 첨가한 현미에 배양한 상황버섯균사체 추출물의 전자공여능, 아질산염소거활성, tyrosinase 저해활성, ACE 저해활성 및 혈전 용해 활성을 검토하고자 수행되었다. 상황버섯 배양물의 전자공여능은 에탄올 추출물 보다 물추출물에서 더 낮았다. 아질산염 소거활성은 물추출물 보다 에탄올 추출물로 부터의 상황 버섯 배양물에서 가장 높았다 특히, 솔잎 첨가물 처리시 아질산염 소거활성은 에탄올 추출물의 pH 1.2에서 약 70%였다. 상황버섯 배양물의 Tyrosinas 저해활성은 에탄올 추출물 보다 물추출물에서 가장 높았고, 저해율은 솔잎 첨가된 열수 추출물에서 가장 높았다. ACE 저해활성은 물보다 에탄올 추출물에서 매우 낮은 효과가 있었다. 혈전용해활성은 미강과 솔잎 그리고 강황에서 유사하게 높았다. 특히 미강 첨가시 그 활성이 plasmin 보다 약 5% 증가되었다. 그러므로, 유용 성분 분리 및 정제와 같은 추가적인 연구를 통하여 기능성 물질의 천연소재로써 식품 및 화장품 산업에 이용될 수 있을 것이다.