scholarly journals Microencapsulation of three natural dyes from butterfly pea, Sappan wood, and turmeric extracts and their mixture base oncyan, magenta, yellow (CMY) color concept

2021 ◽  
pp. 91-101
Author(s):  
Musdalifa ◽  
Muthia Chairany ◽  
Nur Haliza ◽  
Februadi Bastian
Keyword(s):  
Methyl Cellulose ◽  
Natural Dyes ◽  
Synthetic Dyes ◽  
Coating Materials ◽  
Turmeric Extract ◽  
Wood Extracts ◽  
Butterfly Pea ◽  
Materials Used ◽  
The Stability ◽  
Carboxy Methyl

Synthetic dyes in food can cause severe problems for health, so they need to be replaced by natural dyes. However, natural dyes are unstable, and encapsulation is one way to maintain the stability of natural dyes. This study was conducted to determine the best microencapsulation coating, storage stability, and color variations produced by butterfly pea, sappan wood, and turmeric extracts. The coating materials used were maltodextrin, carrageenan, and carboxy methyl cellulose (CMC) using the following formulations: 85% maltodextrin and 15% carrageenan (formula A) and 90% maltodextrin and 10% carrageenan (formula B) for coating butterfly pea and sappan wood extracts. Turmeric extracts were coating using 85% maltodextrin and 15% carrageenan (formula A) and 75% CMC and 25% starch (formula C). The encapsulation with maltodextrin (90%) and carrageenan (10%) was the best of encapsulation formula for butterfly pea and sappan wood extract. However, the encapsulation with maltodextrin (85%) and carrageenan (15%) was the best of encapsulation formula for turmeric extract. The green color was obtained from mixing butterfly pea and turmeric dyes in 1:4 ratio, purple from mixing butterfly pea and sappandyes in 1:8 ratio, and orange from mixing turmeric and sappan dyes in 1:2 ratio.

scholarly journals The Utilization of Mg-Al/Cu as Selective Adsorbent for Cationic Synthetic Dyes

2021 ◽  
Vol 16 (4) ◽  
pp. 696-706
Author(s):  
Arini Fousty Badri ◽  
Neza Rahayu Palapa ◽  
Risfidian Mohadi ◽  
Mardiyanto Mardiyanto ◽  
Fitri Suryani Arsyad ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Cationic Dyes ◽  
Synthetic Dyes ◽  
Batch System ◽  
Ft Ir ◽  
Materials Used ◽  
The Stability ◽  
Co Precipitation ◽  
Adsorption Desorption ◽  
Open Access Article

Mg-Al-LDH is a chemical compound produced through co-precipitation technique and modified with Cu(NO3)2.6H2O to form Mg-Al/Cu. However, the research on the capability of these compounds for adsorbing mixtures of cationic dyes as well as malachite green (MG), methylene blue (MB), and Rodhamine-B (Rh-B) has not been carried out. Therefore, this research aims to determine the performance of Mg-Al-LDH and Mg-Al/Cu for removing cationic dyes. The materials used were characterized by using XRD powder, FT-IR, and N2 adsorption desorption. The Adsorption process was conducted by batch system and several effects were investigated, such as kinetic parameter, isotherm, and the temperature condition. The stability feature of Mg-Al-LDH and Mg-Al/Cu was obtained from the regeneration process in the five cycles. The results presented that Mg-Al/Cu was effectively produced, which was indicated by the formation of layer at 10.792° (003), 22.94° (006), 35.53° (112), 55.78° (110), and  56.59° (116). Mg-Al-LDH and Mg-Al/Cu were found to adsorbed MG than the other cationic dyes with adsorption capacity of 68.996 mg/g and 104.167 mg/g, respectively. The unique properties of Mg-Al/Cu includes, structural stability towards the reuse of adsorbent subsequently for five times, without significant decrease of adsorption capacity. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 

scholarly journals Physicochemical Characterization, Stability and Cytotoxicity of a Blue Dye Obtained from Genipap Fruit (Genipa americana L.)

2021 ◽  
Vol 59 (1) ◽  
Author(s):  
Camila Verly de Miranda Sabino ◽  
Bárbara Janaína Paula da Silva ◽  
Danielle Lima Bezerra de Menezes ◽  
Felipe Moura Araújo da Silva ◽  
Tatiane Pereira de Souza ◽  
...  
Keyword(s):  
Physicochemical Characterization ◽  
Chemical Characterization ◽  
Physicochemical Characteristics ◽  
Biological Properties ◽  
Natural Dyes ◽  
Blue Dye ◽  
Synthetic Dyes ◽  
Main Compound ◽  
Electron Microscopy Analysis ◽  
The Stability

Research background. The current commercial scenario indicates an increase in the demand for natural dyes. Compared to synthetic dyes, natural ones have the advantage of being sustainable, making them of great interest for the food and cosmetic industries. The development of new natural dyes is necessary, as well as the carrying out of complementary research regarding the existing ones. Experimental approach. The present study aimed to characterize the chemical and physicochemical characteristics of the dehydrated endocarp of the genipap (Genipa americana) fruit, as well as performing the relevant stability and cytotoxicity tests. The chemical characterization was performed by LC/MS/MS analyses. The stability studies were carried out by spectrophotometry and cytotoxicity assays using cell culture and fluorometric methods. Results and conclusions. After dehydration and milling of the fruit's endocarp, a powder was obtained, which with 20 % water was used to extract the dye. Five compounds were elucidated using HPLC-MS and confirmed the presence of the geniposide as its main compound. Via the X-ray diffraction test and electron microscopy analysis, it was possible to describe the powder obtained as being amorphous and of porous structure with a variable size, respectively. The thermogravimetric analysis indicated a maximum loss of 61 % mass after exposure to a temperature range of 240 °C to 760 °C. The obtained blue dye showed to be stable in the absence of light, at room temperature and presented neutral pH. In the cytotoxicity assay, 95.05±1.33 % of viable human fibroblast were observed after exposure to this dye. The genipap fruit can be a viable alternative for the obtention of natural blue dye, since it is easy to obtain and has very low toxicity for food, pharmaceutical or cosmetic industries. Novelty and scientific contribution. This study demonstrates for the first time the physicochemical and biological properties of a natural blue dye from G. americana fruit.

Effect of process parameters on emulsion stability and droplet size of pomegranate oil-in-water

2021 ◽  
Vol 72 (2) ◽  
pp. e410
Author(s):  
A.H. Kori ◽  
S.A. Mahesar ◽  
S.T.H. Sherazi ◽  
U.A. Khatri ◽  
Z.H. Laghari ◽  
...  
Keyword(s):  
Droplet Size ◽  
Process Parameters ◽  
Emulsion Stability ◽  
Methyl Cellulose ◽  
Carboxy Methyl Cellulose ◽  
Instability Index ◽  
Oil In Water ◽  
Food Applications ◽  
The Stability ◽  
Carboxy Methyl

The development of efficient emulsion is essential and requires a good understanding of the parameters that govern the formation and stability of the emulsion. The droplet size significantly affects the stability of the emulsion. In this study, the stability of pomegranate oil-in-water emulsions (0.5 to 7.0% v/v) was investigated using various emulsifiers in terms of droplet size and instability index during 16 days of storage. The Mastersizer and Lumisizer were used to measure the droplet size and instability index. It was observed that the minimum droplet size was achieved by using 0.3% carboxy methyl cellulose (5.37 μm) and maximum with 1.0/2.5% whey protein/maltodextrin (24.26 μm). The Lumisizer results during storage revealed the higher emulsion stability of carboxy methyl cellulose due to smaller droplet size and high thickness as compared to other emulsions studied. The findings of the present study would be useful for food applications to obtain fine and stable microcapsules.

A Review on Natural Dyes: Raw Materials, Extraction Process, and their Properties

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Sayem ANM ◽  
◽  
Ahmed F ◽  
Saha P ◽  
Talukder B ◽  
...  
Keyword(s):  
Raw Materials ◽  
Extraction Process ◽  
Uv Protection ◽  
Natural Dyes ◽  
Natural Source ◽  
Synthetic Dyes ◽  
Natural Sources ◽  
Fastness Property ◽  
Materials Used

Synthetic dyes and all the processing used in general dyeing is harmful to our health. Dye from natural sources can reduce the risk of synthetic dyes. As indigo has been used for thousands of years for the coloration of textiles as a natural source. This review is aimed at a discussion of different raw materials used for the extraction of natural dyes, the extraction process for different natural dyes, and the properties of fabric dyed by those dyestuffs. Most of the natural dyes showed a very good fastness property in researches. The dyes can be extracted from trees, bark, leaves, flowers, and many more sources. Most of the natural dyes exhibit special properties like anti-microbial, less toxicity, less allergenic, UV protection.

scholarly journals Enhancement stability and color fastness of natural dye: A review

2021 ◽  
Vol 11 (1) ◽  
pp. 548-555
Author(s):  
Catur Harsito ◽  
Aditya Rio Prabowo ◽  
Singgih Dwi Prasetyo ◽  
Zainal Arifin
Keyword(s):  
Biological Effects ◽  
Natural Dye ◽  
Natural Dyes ◽  
Synthetic Dyes ◽  
Spray Dryer ◽  
Color Fastness ◽  
Consumer Awareness ◽  
Red Color ◽  
The Stability

Abstract Consumer awareness of the adverse biological effects of synthetic dyes makes the demand for commercial foods and drinks with natural ingredients increase. The use of natural dyes is increasing and is in demand by consumers in the industrial world. Natural dyes have been used in several sectors such as food, clothing, arts, coatings, and energy. The low stability and brightness of the natural red color are affected by exposure to light, temperature, pH and etc. The co-pigmentation process makes the stability and brightness of natural dyes. The copigmentation method is known that there are two type, liquid and powder. In addition, the combination of copigmentation additives and the correct configuration of the spray dryer process can increase quality color fastness and stability.

The Effect of Copigmentation on the Stability of Butterfly Pea Anthocyanins

2013 ◽  
Vol 594-595 ◽  
pp. 245-249
Author(s):  
Nor Diana Hassan ◽  
Ida Idayu Muhamad ◽  
Mohammad Roji Sarmidi
Keyword(s):  
Plant Extracts ◽  
Cinnamon Extract ◽  
Turmeric Extract ◽  
Ms Analysis ◽  
Butterfly Pea ◽  
The Stability

The objective of this research was to study the effects of co-pigmentation on the colour display and stability of Butterfly Pea extracts with plant extracts under different pH. The scopes of the work focus on the effect on co-pigmentation of the Cinnamon, Cumin and Turmeric extract on the colour display. The effects on colour enhancement and the stability of Butterfly Pea extract were evaluated. LC/MS/MS analysis shows that the anthocyanin in Butterfly Pea is highly acylated and therefore, is stable due to intramolecular copigmentation. The flavonoids content in Cinnamon extract was identified as Cinnamtannin B1(m/z 864.7, MW 864.7156) while in.Cumin extract, Apigenin 7-galacturonylglucoside (m/z 609.409, MW 608.524) and Luteolin 7-digalacturonide-4-glucoside (m/z 625.376, MW 624.376) were presented. Dimethoxycurcumin (m/z 394.2, MW 394.0134 and m/z 313.0, MW 312.975) was identified in Turmeric extract. Turmeric was suggested as the best copigment for Butterfly Pea since it showed the highest hyperchromic shift (61.41%), followed by Cinnamon extract (17.04%) and Cumin extract (16.08%).

scholarly journals Assessment of dissolution profile of Pantoprazole tablets available in Bangladesh

2012 ◽  
Vol 4 (2) ◽  
pp. 58-62
Author(s):  
Aparajita Malakar ◽  
Bishwajit Bokshi ◽  
Utpal Kumar Karmakar
Keyword(s):  
Dissolution Rate ◽  
Solid Dispersion ◽  
Water Soluble ◽  
Dissolution Profile ◽  
Coating Materials ◽  
Volatile Solvents ◽  
Kneading Method ◽  
Enhanced Solubility ◽  
Materials Used ◽  
Liquisolid Compacts

The aim of the present study was to increase the solubility of a poorly water soluble BCS class II drug, valsartan. Liquisolid technology and solid dispersion by kneading method were techniques used to improve the solubility of the drug by using non-volatile solvents and some hydrophilic carriers. Liquisolid compacts were prepared by dissolving the drug in suitable non volatile solvents. The various non volatile solvents used were PG, PEG, and glycerine. The carrier coating materials play an important role in improving the solubility of the drug. The dissolution rate of the drug was increased by using propylene glycol as non-volatile solvent at 20:1 ratio of carrier to coating material. Solid dispersion by kneading method were another attempt to improve solubility the various carrier materials used were PVP K 30, PEG 6000 and mannitol, these carriers are used in various ratios to improve its solubility. The dissolution rate of drug using solid dispersion kneading method with mannitol was increased at 1:3 ratio. The DSC and FTIR studies revealed no drug excipients interactions, whereas XRD revealed the reduced crystalinity of drug, which showed enhanced solubility. From the results it was concluded that the liquisolid compacts enhanced the solubility of valsartan in comparison to traditional solid dispersion method.DOI: http://dx.doi.org/10.3329/sjps.v4i2.10441  S. J. Pharm. Sci. 4(2) 2011: 58-62

SHELL MATERIAL'S PERFORMANCE OF THE MICROCAPSULE FOR ELECTROLYTIC CO-DEPOSITION

2010 ◽  
Vol 24 (15n16) ◽  
pp. 3124-3130 ◽  
Author(s):  
HUI CONG LIU ◽  
XIU QING XU ◽  
WEI PING LI ◽  
YAN HONG GUO ◽  
LI-QUN ZHU
Keyword(s):  
Composite Coating ◽  
Methyl Cellulose ◽  
Water Vapor Permeability ◽  
Core Material ◽  
Vapor Permeability ◽  
Shell Material ◽  
The Core ◽  
Surface Performance ◽  
The Stability ◽  
Positive Effect

The shell material of microcapsules has an important effect on the electrolytic co-deposition behavior, the release of core material and the surface performance of composite coating. This paper discussed the tensile property and the stability of three shell materials including polyvinyl alcohol (PVA), gelatin and methyl cellulose (MC). It is found that these three shell materials have good mechanical strength and flexibility which are favorable to electrolytic co-deposition and stability of microcapsules in composite coating and that MC has well permeability and porosity which has a positive effect on the release of the core material in composite coating. Moreover, the study of the thermal properties and water vapor permeability of the three shell materials showed that their permeability improved with increase of temperature and humidity. In addition, the composite copper coating containing microcapsules with PVA, gelatin or MC as shell material was prepared respectively.

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.

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