Nano Natural Dyes from Melastoma Malabathricum L.

2012 ◽  
Vol 545 ◽  
pp. 59-63 ◽  
Author(s):  
Wan Yunus Wan Ahmad ◽  
M.A. Mohd Nor ◽  
N. Saim ◽  
M.I. Ab Kadir ◽  
M.R. Ahmad
Keyword(s):  
Extraction Method ◽  
Natural Dyes ◽  
Synthetic Dyes ◽  
Printing Industry ◽  
Fashion Industry ◽  
Silk Fibers ◽  
Melastoma Malabathricum ◽  
Solvent Extraction Method ◽  
Silk Fabrics ◽  
Nano Size

In this study, natural colours were produced from Melastoma Malabathricum L.’s (Senduduk) plant. The dyes were extracted from the petal part of the plant using solvent extraction method of acidified methanol and methanol. The natural colours were then converted into powder form of nano size scale using a ball mill grinder. Silk fabrics were used as the substrate and dyed using several natural and synthetic mordant. The use of different solvents for extraction and mordant for dyeing resulted in different colour shades on the silk fabrics. The color fastness to washing tests revealed colour fastness to washing ranging from 3 – 4/5 and the change in color ranging from 3/4 – 4/5. The findings will benefit and promote the dyeing and printing industry such as batik manufacturers and local fashion industry in using natural dyes. On the other hand, dyes from plants can also be used as an alternative to synthetic dyes for dyeing natural silk fibers.

FASTNESS PROPERTIES OF COLOURANTS EXTRACTED FROM LOCUST BEANS AND TAMARIND FRUITS PODS

2013 ◽  
Vol 1 (2) ◽  
pp. 21-34
Author(s):  
IBRAHIM ABDULLAHI UMAR
Keyword(s):  
Natural Dyes ◽  
Synthetic Dyes ◽  
Fastness Properties ◽  
Colour Fastness ◽  
Comparative Analyses ◽  
Silk Fabrics

Kepentingan meningkat untuk pewarna semulajadi bermula beberapa tahun lalu tetapi di pihak pengguna, manfaat tersebut hanya mula dirasai. Pewarna asli dianggap sebagai pewarna mampan dan mesra alam; mereka boleh menghasilkan warna yang berbeza warna dan mempunyai ketahanan luntur yang lebih rendah daripada pewarna sintetik. Oleh itu, kertas kerja ini dikaji pada sifat kubu daripada pewarna yang diekstrak daripada kacang belalang dan buah-buahan asam buah.Warna-warna ini dipetik menggunakan kaedah berair dan pelarut dan telah digunakan di dataran terluntur ditenun kapas dan sutera kain.Yang digunakan bagi pedas meningkatkan penembusan warna (pewarna) dan sampel dicelup telah tertakluk kepada ujian kubu (membasuh, menggosok, peluh & ujian cahaya). Perbandingan analisis kepada tahap pewarnaan telah direkodkan dan ujian kubu baik daripada analisis membuktikan bahawa; warna boleh digunakan sebagai pewarna pada kapas dan sutera kain.   An interest for natural dyes increased several years ago but on the part of the consumers, the benefits are just beginning to be felt. Natural dyes are considered as sustainable and ecofriendly dyes; they can produce different shades of colours and have lower colour fastness than synthetic dyes. Therefore, this paper researched on the fastness properties of colorant extracted from locust beans and tamarind fruits pods. The colours were extracted using aqueous and solvent methods and were applied on bleached plain weaved cotton and silk fabrics. The use of mordant increased the penetration of the colours (dyes) and the dyed samples were subjected to fastness test (washing, rubbing, perspiration & light test). Comparative analyses on the degree of staining were recorded and good fastness test from the analysis proved that; the colours can be used as dyes on cotton and silk fabrics.

EKSTRAKSI ZAT WARNA ALAMI WORTEL (DAUCUS CAROTA)MENGGUNAKAN PELARUT AIR

EKUILIBIUM ◽  
2014 ◽  
Vol 13 (2) ◽  
Author(s):  
Margono Margono
Keyword(s):  
Daucus Carota ◽  
Extraction Method ◽  
Negative Impact ◽  
Weight Ratio ◽  
Natural Dyes ◽  
Synthetic Dyes ◽  
Influence Of Temperature ◽  
Food Dyes ◽  
Optimum Extraction ◽  
Solvent Volume

<p>Abstract: Since the invention of synthetic dyes, the use of natural dyes became decreased.<br />The synthetic dyes was cheaper and more profitable than natural dyes. However, the use of<br />synthetic dyes for foods and beverages has the negative impact. Therefore the use of natural<br />food dyes is recommended because it is harmless. Carrots are one kind of foods that produced<br />natural dyes. The aims of this research were to determine the influence of temperature and time<br />extraction for the optimum yield. This research used the batch extraction method, using a threeneck</p><p>flask and stirrer at 400 rpm. The extraction was set at (30, 60, 80, 100)˚C and time (20,<br />40, 60, 80) minutes, with a weight ratio of material to solvent volume is 1 g : 10 ml. In this<br />research, the optimum extraction conditions was at 80 ˚C.<br />Keywords: extraction, carrots, dye, yield</p>

scholarly journals NATURAL DYES EXTRACTED FROM WASTE LEAVES OF TERMINALIA CATAPPA LOCALLY KNOWN AS TROPICAL ALMOND AND ITS APPLICATION ON SILK FABRICS PRETREATED WITH ECO FRIENDLY AND NONECO-FRIENDLY MORDANTS

2017 ◽  
Vol 5 (5) ◽  
pp. 125-137 ◽  
Author(s):  
Yogesh Vadwala ◽  
Namrita Kola
Keyword(s):  
Natural Resources ◽  
Environmental Pollution ◽  
Waste Product ◽  
Natural Dye ◽  
Natural Dyes ◽  
Synthetic Dyes ◽  
Fastness Properties ◽  
Terminalia Catappa ◽  
Silk Fabrics ◽  
Dyes And Pigments

The use of non-toxic and eco-friendly natural dyes on textiles has become a matter of significant importance because of the increased environmental awareness in order to avoid some synthetic dyes. Synthetic dyes are hazardous and carcinogenic and also release vast amount of pollutant in the environment during their manufacture and application, thus revival of natural dyeing techniques as one of the alternative is being emphasized for this purpose. Most effective ways for reducing environmental pollution is the replacement of polluting materials and chemicals by eco-friendly natural materials. Many natural resources which are being wasted indiscriminately or thrown away as a waste product contain useful dyes and pigments. In the present study, natural dye extracted from the waste leaves of Terminalia Catappa (tropical almond) and its application on silk fabrics pretreated with eco-friendly and non-eco-friendly mordants have been carried out successfully. Different shades with excellent to good fastness properties have been obtained.

scholarly journals Gas Chromatography of Urinary Anthranilic Acid and 3-Hydroxyanthranilic Acid by Solvent Extraction Method

1972 ◽  
Vol 20 (7) ◽  
pp. 1412-1416 ◽  
Author(s):  
KAZUYUKI HIRANO ◽  
KAZUMI MORI ◽  
NOBUKO TSUBOI ◽  
SATOSHI KAWAI ◽  
TAKEO OHNO
Keyword(s):  
Gas Chromatography ◽  
Solvent Extraction ◽  
Anthranilic Acid ◽  
Extraction Method ◽  
Solvent Extraction Method ◽  
Hydroxyanthranilic Acid

Extraction of 2-Acetyl-1-Pyrroline (2AP) in Pandan Leaves (Pandanus Amaryllifolius Roxb.) Via Solvent Extraction Method: Effect of Solvent

2014 ◽  
Vol 67 (2) ◽  
Author(s):  
Norzita Ngadi ◽  
Noor Yahida Yahya
Keyword(s):  
Solvent Extraction ◽  
Extraction Method ◽  
Extraction Process ◽  
Natural Sources ◽  
Effect Of Solvent ◽  
Method Effect ◽  
Solvent Extraction Method ◽  
Pandanus Amaryllifolius

Pandan (Pandanus amaryllifolius Roxb.) leaves are widely used in Malaysia as a source of natural flavoring.  The major compound contributing to the characteristic flavour of Pandan is 2-acetyl-1-pyrroline (2AP). As the consumer requirement for use of natural flavours, extraction of components from natural sources has been sought. In this study, solvent extraction of 2AP from Pandan leaves was performed. The effect of solvent used during extraction process (i.e. methanol, ethanol, propanol) towards the yield of 2AP was investigated. The presence of 2AP was determined using GCMS. The results obtained showed that ethanol was the best solvent to extract 2AP from Pandan leaves compared to methanol as higher 2AP peak arises from ethanol chromatogram.  However there is no 2AP detected when propanol was used as solvent.  It is believed that polarity of the solvent plays an important role in the extraction of 2AP.

Treatment of Textile Wastewater using Biodegradable Flocculants of Chitosan and Extracted Pandan Leaves

2013 ◽  
Vol 64 (1) ◽  
Author(s):  
Norzita Ngadi ◽  
Nor Aida Yusoff
Keyword(s):  
Solvent Extraction ◽  
Extraction Method ◽  
Textile Wastewater ◽  
Settling Time ◽  
Turbidity Removal ◽  
Test Experiment ◽  
Jar Test ◽  
Solvent Extraction Method ◽  
Flocculation Process

The study investigated the performance of chitosan and extracted pandan leaves towards treatment of textile wastewater by using flocculation process. Pandan leaves were extracted by using solvent extraction method. Flocculation process was conducted using a Jar test experiment. The effect of dosage, pH, and settling time on reduction of COD, turbidity and color of textile wastewater was studied. The results obtained found that chitosan was very effective for reduction of COD, turbidity, color and indicator for color. The best condition for COD and turbidity removal was achieved at 0.2 g dosage, pH 4 and 60 minutes of settling time. Under this condition, about 58 and 99% of COD and turbidity was removed, respectively. However, the results obtained using extracted pandan was opposite compared to the chitosan. Extracted pandan was not able to remove both COD and turbidity of the waste. 

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