• 한국의류학회지
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• 제37권3호
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• pp.413-423
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• 2013

Chlorophyll is an abundant pigment found in all green plants, algae, and cyanobacteria. This study uses methanol, acetone and water to extract spinach and mate powders in order to examine the possibility of dyeing animal fibers with chlorophyll without chemical alteration. It was shown that methanol extracts of spinach and mate powders can be effectively used to dye wool and silk fabrics if the extract is mixed with water by methanol:water 65:35 v/v. Compared to methanol extract, the acetone extract showed lower chlorophyll yield and lower dye uptake. Water was not an appropriate solvent for chlorophyll extraction and dyeing. Spinach powder showed a higher dye uptake than mate powder due to the higher chlorophyll content than mate powder. It is possible that the chlorophyll dyeing of wool and silk fabrics is due to the hydrogen bonding between the hydroxy amino acids in fiber and the carbonyl groups of chlorophyll. These carbonyl groups are on the heterocyclic ring and the methyl and ethyl side chains of chlorophyll.

• 한국식품영양학회지
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• 제33권5호
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• pp.505-511
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• 2020

In this study, hot water and ethanol, acetone, and hexane extracts of the steamed Deodeok were investigated for use as raw materials for natural cosmetics. Hot water and ethanol, acetone and hexane extracts of steamed Deodeok did not indicate cell toxicity up to 300 ㎍/mL concentration in the MTT assay. The tyrosinase inhibition effects of the ethanol extract were higher than the ascorbic acid. The efficacy of the steamed Deodeok's ethanol extract on the elastase inhibition was similar to that of quercetin at higher concentrations. In conclusion, water, ethanol, acetone and hexane extracts of the steamed Deodeok indicated strong possibility as a whitening and anti-wrinkle functional cosmetic ingredient. Among them, the steamed Deodeok's ethanol extract, which showed excellent activity, is highly available because it has high safety compared to other organic solvent extraction methods used in cosmetics, and has minimal irritation to the skin.

• The Plant Pathology Journal
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• 제35권2호
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• pp.149-155
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• 2019

The antimicrobial activity of acetone, hexane, dichloromethane, and methanol extracts from leaves, stems, immature green fruits, and red fruits of tomato plants was examined against six phytopathogens. The minimum inhibitory concentration (MIC) of the acetonic extracts from these four plant parts was lower than that of the other solvents. Among the acetonic extracts, tomato leaves had a lower MIC than the other tomato parts. The acetonic extract from tomato leaves was therefore selected as a source of antimicrobial substances. The acetonic extract from tomato leaves inhibited mycelial growth of Fusarium oxysporum f. sp. lycopersici, Glomerella cingulata, and Rhizoctonia solani. Mycelial growth of R. solani treated with acetone extract from leaves showed more susceptibility than the other phytopathogens. Using 0.31 mg/ml of the acetonic extract from leaves, mycelial growth of R. solani on days 1, 2, and 3 decreased by 50.0, 52.1, and 64.0%, respectively, compared with acetone solvent treatment. The antimicrobial compounds effective against R. solani were identified as linolenic acid and caffeic acid by bioautography and GC-MS. These two compounds were used to treat six phytopathogens to confirm their antimicrobial activities. Linolenic acid inhibited mycelial growth of R. solani, while caffeic acid showed only slight antimicrobial activity. Results indicated that we propose extracts from tomato leaves which included antimicrobial compounds may provide a new lead in the pursuit of new biological sources of agrochemical candidates.

• 한국식품영양과학회지
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• 제32권8호
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• pp.1227-1232
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• 2003

천연 보존료의 개발을 위한 식품학적 기초자료로 활용하기 위해 인진호 추출물을 이용하여 9종의 병원균과 식중독균에 대한 항균력을 검토한 결과는 다음과 같다. Staphylococcus aureus, Bacillus subtilis, Salmonella typhimurium, Vibrio prahemolyticus에 대해 각 용매 추출물에서 고루 항균성을 나타내었고, 물 추출물은 Vibrio prahaemolyticus에 대해서만 항균활성을 나타내었으며, 아세톤 추출물의 항균력이 가장 높았다. 인진호 아세톤 추출물의 최소저해농도(MIC)는 Staphylococcus aureus와 Bacillus subtilis에서 20 mg/mL, Vibrioparahaemolyticus에서 40 mg/mL 그리고 Salmonella typhimurium에서는 80 mg/mL로 나타났으며, 측정된 48시간 동안까지 최소저해농도 이상에서는 균이 거의 생육하지 못하였다. 인진호 아세톤 추출물의 순차 분획물의 항균활성은 에틸아세테이트와 부탄올 분획물이 Staphylococcus aureus, Bacillus subtilis, Salmonella typhimurium, Bibrio prahemolyticus에서, 클로로포름 분획물은 Staphylococcus aureus, Bacillus subtilis, Salmuneila typhimurium에서 항균활성을 나타내었으며, 헥산 분획물은 Bacillus subtilis에서만 항균활성을 나타내었다. 이같은 사실은 인진호 추출물의 항균성 물질은 특정 용매에만 용해되지 않고 다른 용매에도 용해되는 성분으로 단일 물질보다는 여러 성분일 것으로 생각된다 이상의 결과에서 천연물에 따라 항균력을 가지는 물질이 다양하여 추출용매의 선정이 항균성을 나타내는 성분을 찾아내는데 중요하다고 생각되며, 또한 인진호에서 추출된 항균성 물질이 Staphylococcus aureus나 Vibrio parahaemolyticus 등 식중독균의 생육억제에 효과가 있을 것으로 사료된다.

• 동아시아식생활학회지
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• 제14권4호
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• pp.343-347
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• 2004

Abundant amounts of unripe apples, which were picked out before maturation, were abolished every year fer wastes. Since unripen apples are known to be rich in functional components, the ultimate objective of this research was to utilize them for food resources. The concentrations of polyphenols in hot water extract were the lowest, those in 75% acetone extract the highest. Concentrations of polyphenols in 5/30 sample were 3.5 times higher than those in 6/30 sample regardless of solvents used for extraction. The degree of condensation of flavanolic tannins in the peel was lower than those of the other parts, and the hot water extract was more condensed than the acetone extract. The amount of total flavonoids in the peel and 5/30 samples were 2.7 and 5.0 times higher than those of the flesh and 6/30 samples, respectively.

• 한국식품영양과학회지
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• 제25권3호
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• pp.367-373
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• 1996

The effects of pine needle extracts on serum and liver lipid contents were evaluated in rats. Thirty male Sprague-Dawley rats weighing 329$\pm$4 were divided into five groups and fed high fat diets for four weeks. Each group was administered with following pine needle extract: control, water ; WE-3, hot water extract(3% PN) ; WE-6, hot water extract(6% PN) ; AE-3, acetone extract(3% PN) ; AE-6, acetone extract(6% PN). Weight gains were significantly lower in WE-6 group than other groups. But there was no significant difference among other three groups. Intakes of diet and water containing the extract and the weights of liver, kidney, heart and spleen were not significantly different among the groups. The contents of serum and liver triglyceride in the WE-3 group were lower than those of control group. The contents of HDL-cholesterol in serum of the WE-3 group was significantly higher than other groups. The value of risk factor index(RFI) was determined to be low especially in case of WE-3 group. Due to pine needle extract administration, concentration of liver total lipid in WE-3 group was significantly lower than that of the control group. These results suggest that the WE-3 may reduce elevated levels of serum and liver lipid contents in rat fed high fat diet.

• 한국식품영양학회지
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• 제5권1호
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• pp.13-22
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• 1992

This study was divised to observe the inhibitory effect of growth rate of human colon cancer cells by Eucommial leaf extract, in vitro. Three species of human colon cancer cells, HRT-18, HCT-48 and HT-29, were used for the experiment. Each extract of Eucommial leaf was prepared by extraction with water, 95% alcohol, acetone, chloroform and petroleum ether, and then the inhibitory effect of each extract on the growth rate of cells was compared with control group and each other. The experimental results obtained are summarized as follows; 1. Inhibitory effects on growth rate of human colon cancer fells were strongest in the petroleum ether extract and next in the chloroform extract. 2. Inhibitory effects on the growth rate of the cancer cells by extracts of water, 95% alcohol and acetone were weaker than that of petroleum ether and chloroform. 3. Inhibitory effect of each extract on the cancer cell growth was shown most strong activity in HT-29, and was in order of HRT 18 and HCT-48. In view of the results, it could be suggested that inhibitory effects of non-polar solvent's extracts against the cancer cell growth were more stronger than that of polar solvents and the effects were indicated difference according to the species of the cells.

• 한국식품영양과학회지
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• 제44권8호
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• pp.1144-1149
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• 2015

식용 표고버섯을 acetone, ethyl acetate 및 ethanol 등 여러 용매로 추출하여 각 추출용매에 따른 표고버섯 추출물의 항산화 및 항균 활성을 측정하였다. 추출물은 최소 농도인 98 mg/mL에 맞추어 모든 실험을 진행하였다. 표고버섯의 폴리페놀 함량은 유의적 차이는 보이지 않았으나 극성이 큰 ethanol 추출물이 acetone 추출물과 ethyl acetate 추출물보다 다소 높게 조사되었으며, ABTS 라디칼 소거능에서도 유사한 경향을 확인하였다. 반면에 플라보노이드 함량과 DPPH 라디칼 소거능은 ethyl acetate와 acetone 추출물이 ethanol 추출물보다 다소 높게 조사되었다. 폴리페놀과 플라보노이드 함량은 낮았지만 DPPH 라디칼 소거능에서 항산화 활성을 확인할 수 있었으며, 특히 ABTS 라디칼 소거능은 86.8~98.5%로 표준물질 항산화제인 ascorbic acid보다 좀 더 높은 항산화 활성을 확인하였다. 표고버섯의 다재 내성 관련 항균 활성은 ethyl acetate 추출물이 6종의 다제 내성 균주인 3종의 그람 양성균 Bacillus subtilis, Staphylococcus aureus 및 Micrococcus luteus와 3종의 그람 음성균 Escherichia coli, Pseudomonas aeruginosa 및 Enterobacter cloacae 등 모두에서 항균 활성을 가지고 있는 것을 확인하였다. 특히 B. subtilis에 대하여 가장 높은 항균활성을 보였으며, P. aeruginosa, M. luteus, Ent. cloacae 및 B. subtilis에서는 acetone, ethyl acetate 및 ethanol 추출물 모두에서 항균 활성을 확인할 수 있었다.

• 한국식품영양학회지
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• 제10권1호
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• pp.31-36
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• 1997

늙은 호박의 기능성 검토를 위하여 껍질, 과육, 섬유상 물질 및 가식부의 4 부위를 열수, 70% 아세톤, 70% 메탄올을 이용하여 환류 추출하여 추출물을 제조하였다. 수율은 과육의 경우 63.7∼68.2%를 나타내었다. pH는 70% 아세톤 추출물에서 5.01∼5.45였고, 열수 추출물이 5.78∼6.22로 나타났으며, 부위 중에서 과육부가 가장 높은 것으로 나타났다. 가용성 고형분 함량은 메탄올 추출물, 부위는 과육이 가장 높은 것으로 나타났다. 색도는 섬유상 부위, 총당은 과육, 섬유상, 껍질의 순으로 그 함량이 높은 것을 나타났으며 총폴리페놀과 플라보노이드 함량은 껍질 부위에서 함량이 가장 높았다. 아질산염 소거작용은 용매 종류를 볼 때 껍질, 과육 부위의 경우 열수 추출물, 섬유상, 가식부의 경우 아세톤과 메탄올로 추출할 경우 아질산염 소거작용은 비교적 높은 것으로 나타났다. 과육과 가식부는 메탄올, 섬유상 물질은 아세톤 추출물에서 높은 것을 나타났다. 특히 열수 추출물의 전자공여작용의 크기는 총폴리페놀 함량과 관련이 있는 것으로 나타났다.

• 한국식품영양과학회지
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• 제25권3호
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• pp.374-378
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• 1996

The effects of pine needle extracts on lipid contents and antioxidative enzyme activities in liver of rat were evaluated. Thirty male Sprague-Dawley rats were divided into five groups and fed high fat diets for four weeks. Each group was administered with pine needle extract in the following doses: control, water ; WE-3, hot water extract(3% PN) ; WE-6, hot water extract(6% PN) ; AE-3, acetone extract(3% PN) ; AE-6, acetone extract(6% PN). The results obtained from the experiment were as follows: GOT activities were not significantly different among experimental groups but GPT activities were significantly low in the experimental groups compared to the control group. Liver superoxide dismutase(SOD) activity of pine needle extract administered groups was higher than that of control group. Catalase activities of liver had a similar tendency to SOD activities, but were not significantly different among the groups. Liver TBARS of WE-3 WE and AE-6 groups were slightly lower than those of other groups. Microscopic observation of liver tissue revealed that pine needle extracts increased cellular swelling, which was markedly increased in WE-6 group compared with control group.