The plant dyeing technology has a history of thousands of years in China, its brilliant color with natural material, it can be an effect that chemical dyes can't be. This technology should be widely studied and ap...The plant dyeing technology has a history of thousands of years in China, its brilliant color with natural material, it can be an effect that chemical dyes can't be. This technology should be widely studied and applied. This paper provides perfect introduction to the practical design works; it seeks more expression of plant dyeing through the tentative application of plant dyeing technology in the full dress design and with the combination of traditional dyeing skills and modern design, it will also provides a new thought for the diversification and innovation of design.展开更多
We present a preliminary report on the use of plant dyes in the quantitation of proteins in solution. We have used ethanol, acid, alkali and water to extract dyes from some plant materials, including flowers of Jungle...We present a preliminary report on the use of plant dyes in the quantitation of proteins in solution. We have used ethanol, acid, alkali and water to extract dyes from some plant materials, including flowers of Jungle flame (Izora coccinea), China rose (Hibiscus rosa-sinensis) and leaves of West African Indigo (Lonchocarpus cyanescens), Mimosa (Mimosa pudica), Roselle (Hibiscus sabdarifa), Jatropha (Jatropha curcas) and Henna (Lawsonia inermis). The dyes obtained were used in the protein-dye binding studies. The colour of the protein-dye complex of the ethanolic extracts was stable and increased linearly with increase in protein concentration. The extracts achieved linearity up to the following amount of proteins in the test samples: Hibiscus rosa-sinensis (60 mg), Ixora coccinea (120 mg), Hibiscus sabdarifa (80 - 100 mg), Jatropha curcas (80 mg), and Lawsonia inermis (100 mg). The sensitivity of the dyes especially at low protein concentrations indicate that they can provide suitable alternatives to other well known standard methods of protein determination.展开更多
Barberry has played a prominent role in herbal healing for more than 2500 years. Most of the berberis species have medicinal uses because of the presence of alkaloid “berberine” an isoquinoline alkaloid. The root an...Barberry has played a prominent role in herbal healing for more than 2500 years. Most of the berberis species have medicinal uses because of the presence of alkaloid “berberine” an isoquinoline alkaloid. The root and inner bark are also used for yellow dyeing of clothes. The objective of the present study was to evaluate the seed dormancy, effect of stratification, light conditions and planting bed quality on seed germination of berberis manipurana seeds. A set of freshly processed seeds were sowed in three light conditions i.e., normal light (~5000 lux), poly house ca. 50% shade (~2500 lux) and poly house ca. 75% shade (~1250 lux). In the laboratory, half of the collected seeds were packed in plastic bags, labeled and stored at 4°C (stratification treatment);another half was stored at room temperature of 25°C. Stratified seeds from both the conditions (4°C and 25°C) were sowed in the seed bed at 15 days interval till 120th day (0 - 120 days) to check the viability and germination behaviors. Highest germination rate was observed from seeds stored at 4°C, which registered 82.5% (1.5) germination in the poly-bags against 70% (2.5) from seeds stored at 25°C. While 69% (2.0) and 56% (1.5) seeds germinated in the seeds beds from seeds stratified at 4°C and 25°C respectively.展开更多
In this work, we investigate the performance of dye-sensitized solar cells (DSSCs) based on natural dyes extracted from ten different plant seeds. The extracts were characterized by UV-VIS absorption spectra. The sola...In this work, we investigate the performance of dye-sensitized solar cells (DSSCs) based on natural dyes extracted from ten different plant seeds. The extracts were characterized by UV-VIS absorption spectra. The solar cells were assembled using a TiO2 mesoporous film on FTO-coated glass. The photovoltaic properties of the DSSCs were studied under an incident irradiation of 100 mW/cm2. The best performance was for the DSSC sensitized with Eruca sativa with a solar energy conversion efficiency of 0.725%. Moreover, the validity of these extracts was compared using two types of semiconductor layers (TiO2 and ZnO), and finally the photovoltaic properties of one of these dyes were studied using different types of electrolytes.展开更多
[Objectives] To optimize the pet dog dyeing process of plant hair dye. [Methods]Three factors affecting dyeing were selected including pH,concentration of dye and dyeing time. The L_9(3~3) orthogonal design was used t...[Objectives] To optimize the pet dog dyeing process of plant hair dye. [Methods]Three factors affecting dyeing were selected including pH,concentration of dye and dyeing time. The L_9(3~3) orthogonal design was used to evaluate the hair coloring effect and the absorbance of cleaning solution after hair was dyed. [Results] The optimum pet dog dyeing process of plant hair dye was dye concentration of50 mg/mL,dye pH of 7. 5 and dyeing time of 1 h. [Conclusions] The coloring and fixing effects of the dye and dyeing process are good,which can lay a foundation for the development and utilization of plant dyes.展开更多
文摘The plant dyeing technology has a history of thousands of years in China, its brilliant color with natural material, it can be an effect that chemical dyes can't be. This technology should be widely studied and applied. This paper provides perfect introduction to the practical design works; it seeks more expression of plant dyeing through the tentative application of plant dyeing technology in the full dress design and with the combination of traditional dyeing skills and modern design, it will also provides a new thought for the diversification and innovation of design.
文摘We present a preliminary report on the use of plant dyes in the quantitation of proteins in solution. We have used ethanol, acid, alkali and water to extract dyes from some plant materials, including flowers of Jungle flame (Izora coccinea), China rose (Hibiscus rosa-sinensis) and leaves of West African Indigo (Lonchocarpus cyanescens), Mimosa (Mimosa pudica), Roselle (Hibiscus sabdarifa), Jatropha (Jatropha curcas) and Henna (Lawsonia inermis). The dyes obtained were used in the protein-dye binding studies. The colour of the protein-dye complex of the ethanolic extracts was stable and increased linearly with increase in protein concentration. The extracts achieved linearity up to the following amount of proteins in the test samples: Hibiscus rosa-sinensis (60 mg), Ixora coccinea (120 mg), Hibiscus sabdarifa (80 - 100 mg), Jatropha curcas (80 mg), and Lawsonia inermis (100 mg). The sensitivity of the dyes especially at low protein concentrations indicate that they can provide suitable alternatives to other well known standard methods of protein determination.
文摘Barberry has played a prominent role in herbal healing for more than 2500 years. Most of the berberis species have medicinal uses because of the presence of alkaloid “berberine” an isoquinoline alkaloid. The root and inner bark are also used for yellow dyeing of clothes. The objective of the present study was to evaluate the seed dormancy, effect of stratification, light conditions and planting bed quality on seed germination of berberis manipurana seeds. A set of freshly processed seeds were sowed in three light conditions i.e., normal light (~5000 lux), poly house ca. 50% shade (~2500 lux) and poly house ca. 75% shade (~1250 lux). In the laboratory, half of the collected seeds were packed in plastic bags, labeled and stored at 4°C (stratification treatment);another half was stored at room temperature of 25°C. Stratified seeds from both the conditions (4°C and 25°C) were sowed in the seed bed at 15 days interval till 120th day (0 - 120 days) to check the viability and germination behaviors. Highest germination rate was observed from seeds stored at 4°C, which registered 82.5% (1.5) germination in the poly-bags against 70% (2.5) from seeds stored at 25°C. While 69% (2.0) and 56% (1.5) seeds germinated in the seeds beds from seeds stratified at 4°C and 25°C respectively.
文摘In this work, we investigate the performance of dye-sensitized solar cells (DSSCs) based on natural dyes extracted from ten different plant seeds. The extracts were characterized by UV-VIS absorption spectra. The solar cells were assembled using a TiO2 mesoporous film on FTO-coated glass. The photovoltaic properties of the DSSCs were studied under an incident irradiation of 100 mW/cm2. The best performance was for the DSSC sensitized with Eruca sativa with a solar energy conversion efficiency of 0.725%. Moreover, the validity of these extracts was compared using two types of semiconductor layers (TiO2 and ZnO), and finally the photovoltaic properties of one of these dyes were studied using different types of electrolytes.
基金Supported by the National Science and Technology Foundation Project of Traditional Chinese Veterinary Medicine Resources Rescuing and Organizing(2013FY110600-03)
文摘[Objectives] To optimize the pet dog dyeing process of plant hair dye. [Methods]Three factors affecting dyeing were selected including pH,concentration of dye and dyeing time. The L_9(3~3) orthogonal design was used to evaluate the hair coloring effect and the absorbance of cleaning solution after hair was dyed. [Results] The optimum pet dog dyeing process of plant hair dye was dye concentration of50 mg/mL,dye pH of 7. 5 and dyeing time of 1 h. [Conclusions] The coloring and fixing effects of the dye and dyeing process are good,which can lay a foundation for the development and utilization of plant dyes.
