Open AccessTHERMAL DEGRADATION KINETICS OF KAEMPFEROL AND QUERCETIN IN THE PRE-FORMULATED OF THE STANDARDIZED EXTRACTS OF POINCIANELLA PYRAMIDALIS (TUL.) L. P. QUEIROZ OBTAINED BY SPRAY DRYER
Author(s) -
Agna Hélia de Oliveira,
Renata Da Silva Leite,
FabrÍcio Havy Dantas,
Valmir Gomes de Souza,
José Venâncio Chaves Júnior,
Fábio Santos de Souza,
Rui Oliveira Macêdo
Publication year - 2017
Publication title -
international journal of pharmacy and pharmaceutical sciences/international journal of pharmacy and pharmaceutical sciences
Language(s) - English
Resource type - Journals
eISSN - 2656-0097
pISSN - 0975-1491
DOI - 10.22159/ijpps.2017v9i6.16935
Subject(s) - kaempferol , quercetin , chemistry , response surface methodology , spray drying , chromatography , kinetics , biochemistry , antioxidant , physics , quantum mechanics
Objective: The aim of this work was to evaluate the stability and determine the kinetic parameters of degradation of biomarkers kaempferol and quercetin, present in the pre-formulated of the extract of Poincianella pyramidalis obtained by a spray dryer.Methods: A 23experimental design coupled with RSM was applied to evaluate and optimize the effects of processing parameters on the content of chemical markers in dry extracts by a spray dryer. Stability testing was performed to verify the influence of temperature on the degradation of kaempferol and quercetin present in the pre-formulated. The markers contents were determined by HPLC.Results: Surface response analysis showed the influence of the independent variables on the responses of the concentration kaempferol and quercentin biomarkers on the process. The variables of the inlet air temperature, flow feed rate and the adjuvant ratio presented negative responses with significant difference (p<0.05). According to the data obtained in the stability of the pre-formulated studied zero and second orders kinetics models the for degradation of the kaempferol and only second order kinetic model for the quercetin. It was also evaluated reducing the concentration of both biomarkers studied throughout the study.Conclusion: In the present study, it was observed that all independent variables of the drying process by spray dryer showed the greatest influence on the concentration of the studied markers. Two markers had a different thermal behavior compared to the different excipients studied and there was degradation of both the quercentin biomarker and kaempferol during the study period.