2024-03-29T15:51:12Zhttps://www.tdx.cat/oai/requestoai:www.tdx.cat:10803/811222022-07-19T08:58:31Zcom_10803_183col_10803_227
nam a 5i 4500
sustainability
vegetable-tanning
wet-white
leather
tannins
Tara
taninos
cuero
curtición vegetal
sostenibilidad
TARA (Caesalpinia spinosa): the sustainable source of tannins for innovative tanning processes
[Barcelona] :
Universitat Politècnica de Catalunya,
2012
Accés lliure
http://hdl.handle.net/10803/81122
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Castell Escuer, Joan Carles,
autor
1 recurs en línia (202 pàgines)
Tesi
Doctorat
Universitat Politècnica de Catalunya. Departament de Projectes d'Enginyeria
2012
Universitat Politècnica de Catalunya. Departament de Projectes d'Enginyeria
Tesis i dissertacions electròniques
Bacardit i Dalmases, Anna,
supervisor acadèmic
Ollé i Otero, Lluís,
supervisor acadèmic
TDX
This thesis considers the fruit of the tara tree (Caesalpinia spinosa) as a sustainable source for tanning agents and proposes alternatives to the commercial mineral salts and vegetable extracts to comply with an increasing demand that concerns lower carbon footprint and health safety. Taxonomy of the tree is described and the substances contained in the fruit are chemically characterized in order to justify that tara farm forestry is economically viable and to secure a potential worth. The value chain is fully described from fruit collection in remote Andean regions to the export for the most important leather markets.
Although tara tannins have been used in the leather industry and its properties being well known, the experimental part of the work aims to optimize innovative formulations using tara as wet-white pre-tanning agent. Combinations with a selected syntan used for wet white and final article recipes are proposed
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