Color Degradation of Printed Images

2020 ◽  
Vol 69 (2) ◽  
pp. 458-470
Author(s):  
Ziyi Wang ◽  
Elsayed A. Elsayed
Keyword(s):  
Color Degradation

Plantain fibers obtained from pseudostems residues for efficient color degradation of indigo carmine dye

2018 ◽  
Vol 126 ◽  
pp. 302-308 ◽  
Author(s):  
Sara Lucía Mora ◽  
Yuliana Cadavid ◽  
Edith M. Cadena Ch ◽  
Juan M. Vélez ◽  
R. Buitrago-Sierra ◽  
...  
Keyword(s):  
Indigo Carmine ◽  
Color Degradation ◽  
Indigo Carmine Dye

scholarly journals Ekstraksi dan Uji Stabilitas Zat Warna Alami dari Bayam Merah (Alternanthera amoena Voss)

KOVALEN ◽  
2020 ◽  
Vol 6 (3) ◽  
pp. 212-217
Author(s):  
Khairuddin ◽  
Joy Noldy Baciang ◽  
Indriani ◽  
Nov Irmawati Inda
Keyword(s):  
Sun Exposure ◽  
Natural Dye ◽  
Natural Dyes ◽  
Stability Test ◽  
Stability Testing ◽  
Effect Of Ph ◽  
Color Degradation ◽  
The Stability ◽  
Better Than

Research on the extraction and stability test of natural dye from red spinach (Alternanthera amoena Voss) has been carried out. This study aims to determine the effect of pH and length of sun exposure on the stability of the dye from red spinach. Extraction using the maceration method with ethanol solvent and measurement using a UV-Vis spectrophotometer. Stability testing is carried out at pH 2-5 and sun exposure for 1-4 hours using a dark and light container. The results obtained, at pH 2 and pH 3, anthocyanins were more stable, compared to pH 4 and 5 which had greater color degradation. In exposure to sunlight, dark containers with a degradation percentage of 31.70% were better than clear containers with a percentage of 48.78%. Keywords: Anthocyanin, red spinach, natural dyes stability.

scholarly journals COLOR DEGRADATION KINETICS OF REHYDRATED ‘BORLOTTO’ BEANS STORED IN DIFFERENT GAS ATMOSPHERES AS MEASURED BY IMAGE ANALYSIS

2012 ◽  
Vol 42 (4) ◽  
pp. 33
Author(s):  
Maria Luisa Amodio ◽  
Rosaria Cornacchia ◽  
Fedele Colantuono ◽  
Giancarlo Colelli
Keyword(s):  
Image Analysis ◽  
Degradation Kinetics ◽  
Color Degradation ◽  
Kinetics Of

Electrochemical synthesis of doped TNT as a nano photocatalyst for color degradation applications

2011 ◽  
Vol 28 (1-3) ◽  
pp. 23-27
Author(s):  
Shahab Khameneh Asl ◽  
M. Kianpour Rad ◽  
S.K. Sadrnezhaad
Keyword(s):  
Electrochemical Synthesis ◽  
Color Degradation

Color Degradation in an Ascorbic Acid-Anthocyanin-Flavanol Model System

1981 ◽  
Vol 46 (4) ◽  
pp. 1218-1236 ◽  
Author(s):  
M. S. POEI-LANGSTON ◽  
R. E. WROLSTAD
Keyword(s):  
Ascorbic Acid ◽  
Model System ◽  
Color Degradation

scholarly journals Production of sucroesters using solvent-free reactive systems containing emulsifiers

2018 ◽  
Vol 38 (1) ◽  
pp. 16-23 ◽  
Author(s):  
Alvaro Orjuela ◽  
Maria Fernanda Gutierrez ◽  
Andrea Suaza ◽  
Jose Luis Rivera
Keyword(s):  
Fatty Acid ◽  
Process Design ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Reactive Systems ◽  
Reaction Times ◽  
Solvent Free ◽  
Acid Methyl ◽  
Color Degradation ◽  
Multiple Substitution

The transesterification reaction of sucrose and fatty acid methyl esters to produce sucroesters was experimentally evaluated using commercial emulsifiers as compatibility agents. Reactions were carried out at temperatures between 100 and 140°C, using emulsifier concentrations in the range of 5 to 15 %wt, and potassium carbonate as catalyst. Fatty acid methyl esters consumption and sucroesters production was monitored by HPLC analysis of samples. Methyl esters conversions around 40 % were obtained with 68 %wt monoester content in sucroesters mixture. Despite the reaction times were reduced by operating at high temperatures and high emulsifier’s concentration, multiple substitution and color degradation were observed. Higher productivities of sucroester and higher selectivity to monoesters were obtained when potassium palmitate was used as contacting agent. The lower monoester content in the final product was obtained when using a commercial sucroester emulsifier. Results of this study can be used for preliminary process design in a solvent-free production of biobased sucroesters.

Color degradation kinetics of pineapple puree during thermal processing

LWT ◽  
2007 ◽  
Vol 40 (2) ◽  
pp. 300-306 ◽  
Author(s):  
Benjar Chutintrasri ◽  
Athapol Noomhorm
Keyword(s):  
Thermal Processing ◽  
Degradation Kinetics ◽  
Color Degradation ◽  
Kinetics Of
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