TY - CHAP
T1 - Capturing natural chromophores on natural and synthetic aluminosilicates
AU - Lima, E.
AU - Martínez-Ortiz, M. J.
AU - Fregoso, Esteban
AU - Méndez-Vivar, J.
PY - 2007
Y1 - 2007
N2 - Several materials such as zeolites, clays, alumina, and hydrotalcite were tested as adsorbents of carmine cromophores from hibiscus Sabdariffa L. tropical flower. Majority of materials were unable to trap and stabilize the chromophore, some of them were not coloured and by the other ones the chromophore was chemically degraded, a change of colour was observed. The best adsorbents were natural mordenite zeolite from Oaxaca, Mexico and montmorillonite from Wyoming, USA. These two materials sequester the colour of flower and maintain this colour for several months and they resist even acid attacks. From characterization of pigments the interaction anthocyanine-adsorbent is proposed.
AB - Several materials such as zeolites, clays, alumina, and hydrotalcite were tested as adsorbents of carmine cromophores from hibiscus Sabdariffa L. tropical flower. Majority of materials were unable to trap and stabilize the chromophore, some of them were not coloured and by the other ones the chromophore was chemically degraded, a change of colour was observed. The best adsorbents were natural mordenite zeolite from Oaxaca, Mexico and montmorillonite from Wyoming, USA. These two materials sequester the colour of flower and maintain this colour for several months and they resist even acid attacks. From characterization of pigments the interaction anthocyanine-adsorbent is proposed.
UR - http://www.scopus.com/inward/record.url?scp=35348899461&partnerID=8YFLogxK
U2 - 10.1016/S0167-2991(07)81107-4
DO - 10.1016/S0167-2991(07)81107-4
M3 - Capítulo
AN - SCOPUS:35348899461
SN - 0444530681
SN - 9780444530684
T3 - Studies in Surface Science and Catalysis
SP - 2110
EP - 2115
BT - From Zeolites to Porous MOF Materials - The 40th Anniversary of International Zeolite Conference
PB - Elsevier Inc.
ER -