scholarly journals Comparative study on the extraction of natural dye by conventional magnetic stirring and ultrasound-assisted extraction techniques from carrot

2018 ◽  
Vol 11 (Special) ◽  
pp. 99-101
Author(s):  
Chanda Bramhankar ◽  
Archana Khare ◽  
Pranali Nikam ◽  
Mehar Afroz Qureshi ◽  
Y.K. Naik
Keyword(s):  
Comparative Study ◽  
Natural Dye ◽  
Extraction Techniques ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Magnetic Stirring ◽  
Ultrasound Assisted

Enzyme production by solid‐state fermentation on soybean meal: A comparative study of conventional and ultrasound‐assisted extraction methods

2019 ◽  
Vol 66 (3) ◽  
pp. 361-368 ◽  
Author(s):  
Abdalla Ali Salim ◽  
Sanja Grbavčić ◽  
Nataša Šekuljica ◽  
Maja Vukašinović‐Sekulić ◽  
Jelena Jovanović ◽  
...  
Keyword(s):  
Solid State ◽  
Comparative Study ◽  
Solid State Fermentation ◽  
Soybean Meal ◽  
Enzyme Production ◽  
Extraction Methods ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Ultrasound-Assisted Extraction of Natural Dye from Exocarp and Mesocarp of Cocos nucifera

2015 ◽  
Vol 1113 ◽  
pp. 477-480 ◽  
Author(s):  
F.Z. Asma ◽  
M.H. Rodiah ◽  
M.Y. Aziah ◽  
M.N. Norakma ◽  
I. Nurhafizah
Keyword(s):  
Cocos Nucifera ◽  
Control Sample ◽  
Extraction Process ◽  
Aqueous Extraction ◽  
Natural Dye ◽  
Ultrasound Assisted Extraction ◽  
Natural Colorant ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Agricultural Industries

There is an abundance of waste contributed by most agricultural industries. Coconut industry wastes such as the (exocarp) outer layer and (mesocarp) husk can be exploited and turned into useful products such as natural dyes. In the present work, solvent extraction of natural dye from exocarp and mesocarp of Cocos nucifera using ultrasound has been studied. Methanol, ethanol and acetone with varying concentration (20%-70%) were used in the extraction process which was carried out at 30°C for 1 hour. Aqueous extraction was also performed with the same condition and acts as a control sample. The extraction of pigment from exocarp using 50% acetone produced the highest percentage of the yield of colorant (11.6%), while for mesocarp extraction, both 50% and 60% acetone yielded the highest percentage of colorant which was 9.2%. In addition, control sample (aqueous extraction of mesocarp and exocarp) showed lower percentages of the yield of colorant which was 6.4% and 6.8%, respectively. The results indicate that there was a significant improvement in the percentage of yield of natural colorant obtained due to the use of ultrasound.

scholarly journals Natural Dye Extraction From Teak Leves (Tectona Grandis) Using Ultrasound Assisted Extraction Method for Dyeing on Cotton Fabric

2018 ◽  
Vol 156 ◽  
pp. 05004 ◽  
Author(s):  
Lailatul Qadariyah ◽  
Mahfud Mahfud ◽  
Endah Sulistiawati ◽  
Prima Swastika
Keyword(s):  
Textile Industry ◽  
Extraction Method ◽  
Acid Methyl Ester ◽  
Tectona Grandis ◽  
Living Organism ◽  
Natural Dye ◽  
Extraction Time ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Synthetic dye waste of textile industry has contaminated the water and aquatic living organism. One of the solution is used teak leaves as the natural dye. Common conventional extraction process is soxhletation which need more time and more solvent. One of extraction method that has been developed is ultrasound assisted extraction (UAE). The objectives of this research were to study the effect of solvent, extraction time, pH, and extraction yield. The conclusion of this research was optimum yield of teak leaves extract about 42,79% at pH 3 and extraction time of 20 minutes with aquadest as the solvent using UAE method. If natural dye of taek leaves was used on cotton, the color will change depend on fixator that was added. In GC-MS analysis, some compound that were detected are decanoic acid methyl ester and methyl tetradecanoate. Both of the compound have chromophore cluster.

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