CFP last date
20 December 2024
Reseach Article

Influence on Color Attributes of Freshly Brewed Tea with Time due to Variations in Temperature Conditions

by Amit Laddi, Shashi Sharma, Amod Kumar, Neelam Rup Prakash
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 34 - Number 7
Year of Publication: 2011
Authors: Amit Laddi, Shashi Sharma, Amod Kumar, Neelam Rup Prakash
10.5120/4109-5908

Amit Laddi, Shashi Sharma, Amod Kumar, Neelam Rup Prakash . Influence on Color Attributes of Freshly Brewed Tea with Time due to Variations in Temperature Conditions. International Journal of Computer Applications. 34, 7 ( November 2011), 7-9. DOI=10.5120/4109-5908

@article{ 10.5120/4109-5908,
author = { Amit Laddi, Shashi Sharma, Amod Kumar, Neelam Rup Prakash },
title = { Influence on Color Attributes of Freshly Brewed Tea with Time due to Variations in Temperature Conditions },
journal = { International Journal of Computer Applications },
issue_date = { November 2011 },
volume = { 34 },
number = { 7 },
month = { November },
year = { 2011 },
issn = { 0975-8887 },
pages = { 7-9 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume34/number7/4109-5908/ },
doi = { 10.5120/4109-5908 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T20:20:27.826371+05:30
%A Amit Laddi
%A Shashi Sharma
%A Amod Kumar
%A Neelam Rup Prakash
%T Influence on Color Attributes of Freshly Brewed Tea with Time due to Variations in Temperature Conditions
%J International Journal of Computer Applications
%@ 0975-8887
%V 34
%N 7
%P 7-9
%D 2011
%I Foundation of Computer Science (FCS), NY, USA
Abstract

The effects of time and temperature over the color of freshly brewed Indian tea liquor using spectrophotometer were evaluated. The study suggests that after brewing, the tea samples undergo a color change which was measured in CIE L*a*b* color model. To find out the temperature effects, the experiment was done under two conditions i.e. normal cooling and imposed cooling of the sample to room temperature immediately after brewing. Change in the color was found less prominent in the latter case and it is concluded that the color changes rapidly after brewing and can pose difficulty in quality assessment of tea samples by tea tasters during visual inspection, if time and temperature are not taken into account

References
  1. Biswas, A. K.; Sarkar, A. R.; Biswas, A. K. Biological and chemical factors affecting the valuation of North East Indian plain teas. III. Statistical evaluation of the biochemical constituents and their effects on color, brightness and strength of black teas. Journal of the Science of Food and Agriculture 1973, 24, 1457–1477.
  2. McDowell, I.; Feakes, J.; Gay, C. Phenolic composition of black tea liquors as a means of predicting price and country of origin. Journal of the Science of Food and Agriculture 1991, 55, 627–641.
  3. Roberts, E.A.H. The phenolic substances of manufactured tea, X – The cream down of tea liquors. Journal of the Science of Food and Agriculture 1963, 14, 700–705.
  4. Hilton, P. J.; Ellis, R. J. Estimation of the market value of Central African tea by theaflavins analysis. Journal of Science and Food Agriculture 1972, 23, 227–232.
  5. Cloughley, J. B. The effect of fermentation temperature on the quality parameters and price evaluation of Central African black teas. Journal of the Science of Food and Agriculture 1980, 31, 911–919.
  6. Liang, Y. R.; Xu, Y. R. Effect of pH on cream particle formation and solids extraction yields of black tea. Food Chemistry 2001, 74,155–160.
  7. Kim, E.S.; Liang, Y.R.; Jin J.; Sun, Q.F.; Lu ,J.L.; Du Y.Y.; Lin ,C. Impact of heating on chemical compositions of green tea liquor. Food Chemistry 2007, 103, 1263-1267.
  8. Liang, Y.; Xu, Y. Effect of extraction temperature on cream and extractability of black tea
  9. Camellia sinensis (L.) O. Kuntze. Int. J. Food Sci. Technol. 2003, 38, 37-45.
  10. Roberts, E.A.H. Economic importance of flavonoid substances – tea fermentation. In: The Chemistry of Flavonoid Compounds (edited by T. A. Geissman) 1962, 459–509.
Index Terms

Computer Science
Information Sciences

Keywords

Brewed tea liquor Time Temperature CIE L*a*b* color model Tea quality