Record Details     « New Search       Brief Record Full Record MARC Record     Bibliographic Data Control Number 308052 Date and Time of Latest Transaction 20180522074312.AM General Information 180522s |||||||||b ||00||| Cataloging Source STII-DOST Language Code eng Local Call Number Fil(S) TS1300 S42 v.13 2013 Main Entry - Personal Name Leaño, Jr., Julius L.1   aTadeo, Neil Jhon G.1   aManalang, Evangeline Flor P.0 Title Statement aTotal phenolic content and textile dye performance of dried Coffea robusta (coffee) mesocarp by Julius L. Leaño, Jr., Neil Jhon G. Tadeo, Evangeline Flor P. Manalang Physical Description 31-48 illustrations, graphs, pictures, tables Summary, Etc.      The total phenolic content (TPC) of the Robusta coffee (Coffea robusta) pulp was successfully determined using Folin-Ciocalteu assay. Different factors, such as extraction methods, sample to solvent ratio, solvent system, temperature, rate, and duration, affect the amount of TPC extracted. Based on the results, refluxing with 50:50 EtOH-H2O is the best extraction solvent-system and approach. The crude coffee pulp extracts were freeze dried and was found to have the highest powder yield of 54.6% from extraction by boiling in water. The powdered extract was characterized using FTIR-DRS and UV-Vis Spectroscopy. FTIR spectrum showed the presence of peaks corresponding to alcoholic O-H, alkyl C-H and aromatic C=C vibrations. UV-Vis spectrum showed a maximum peak at 312 nm corresponding to the electronic transitions of TT electrons in the benzene ring of the polyphenolic compounds. Results confirmed the presence of polyphenolic compounds as earlier detected by Folin-Ciocalteu assay. Dye potential of the coffee pulp powder was investigated and was found to impart light brown color to pineapple (Ananas comosus), abaca (Musa textilis), silk (Bombyx mori) and pineapple-silk) fabrics. Results further revealed that the dyed fabrics, whether pre-mordanted or not, showed satisfactory performance to colorfastness laundering and perspiration tests and these colorfastness properties proved that C. robusta mesocarp is a promising textile dye source. (Author's abstract)04 Subject Added Entry - Topical Term Chemistry04   Coffea robusta04   Folin-ciocalteu assay04   FTIR-DRS           Physical Location           Digital Copy Not Available          Add to Book Cart  |   Download MARC