Applying crude fibre to detect adulteration of tea
2008
Dmowski, P. | Smiechowska, M.,Akademia Morska, Gdynia (Poland). Katedra Towaroznawstwa i Ladunkoznawstwa
The authors suggested a method of determining crude fibre to verify the origin of raw material. The content of crude fibre is closely connected with the age of leaves. The objective of this paper was to prove whether or not some black teas were adulterated with the addition of older tealeaves and/or with stems. The black teas investigated comprised: teas imported into Poland and originating from different tea cultivation regions, teas purchased in the shops located within the Tricity (in Polish - Trojmiasto consisting of the cities of Gdansk, Gdynia, Sopot). The authenticity of each tea product was determined by measuring the content of crude fibre therein. Based on the investigation results obtained, it was found that the majority of teas imported into Poland, as well as some other teas available on the Tricity marked, were teas made of older (qualitatively worse) tealeaves
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