%0 Journal Article
%T On
%A Ajanto K Hazarika
%A Bipan Tudu
%A Dilip Sing
%A Hemanta Naskar
%A Pradip Tamuly
%A Rajib Bandyopadhyay
%A Sahnaz Tasrin
%A Sandip Sanyal
%A Santanu Sabhapondit
%A Somdeb Chanda
%J NIR news
%@ 1756-2708
%D 2018
%R 10.1177/0960336017750326
%X The quality of tea liquor primarily depends on the quality of inbound fresh leaves to a tea factory. We report here the development of an industrial set-up using diffuse reflectance near-infrared spectroscopy for quick and on-spot estimation of total polyphenol content, which is one of the major quality indicators of tea. In the inspection system, freshly plucked tea leaves are dried with a heating system designed in such a way that the moisture content is reduced to around 3¨C4%. The dried leaves are then ground and sieved through a 250£¿¦Ìm mesh. Samples thus produced are placed automatically before the near-infrared beam and assessment of total polyphenol is done instantaneously
%K Polyphenol
%K fine leaf count
%K bought leaf
%K Folin¨CCiocalteu method
%K partial least squares
%U https://journals.sagepub.com/doi/full/10.1177/0960336017750326