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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Optimization of spray drying conditions for production of Bidens pilosa L. dried extract

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Cortes-Rojas, Diego Francisco [1] ; Fernandes Souza, Claudia Regina [1] ; Oliveira, Wanderley Pereira [1]
Total Authors: 3
[1] Univ Sao Paulo, Fac Ciencias Farmacaut Ribeirao Preto, Lab R&D Pharmaceut Proc LAPROFAR, BR-14040903 Ribeirao Preto, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: CHEMICAL ENGINEERING RESEARCH & DESIGN; v. 93, p. 366-376, JAN 2015.
Web of Science Citations: 14

Spray drying is a technique commonly used to produce powdered phytopharmaceutical ingredients from medicinal plants. Product quality is related to operating conditions and the drying carriers used. Bidens pilosa L. is a South American plant with proved antiinflamatory, antimalaric, antitumoral and hepatoprotector activities. The aim of this work was to optimize the processing variables inlet drying temperature, plant extract feed flow rate and drying composition on the properties of the powdered B. pilosa compositions. Experimental planning, regression and multiple response analysis were used in data processing and to optimize the drying conditions. The responses evaluated were total flavonoid content, antioxidant activity, concentration of selected plant compounds, particle size, residual moisture content, solubility, flow properties, product recovery and drying efficiency. Results showed that inlet drying temperature was the factor that showed significant influence in most of the responses. The concentration of the bioactive marker compounds monitored decrease conversely with inlet spray drying temperature. Powders obtained at low inlet drying temperatures presented higher residual moisture and particle size, favouring flow properties. The optimized conditions based on the mathematical models fitted to experimental data were: Aerosil (R):Cellulose 13:37%, extract feed rate 8.95 mg/min and inlet gas temperature of 155.2 degrees C. (C) 2014 The Institution of Chemical Engineers. Published by Elsevier BAT. All rights reserved. (AU)

FAPESP's process: 09/11080-0 - Standardized dried extracts of Bidens pilosa L.: Technological development and evaluation of the biological activity
Grantee:Diego Francisco Cortés-Rojas
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 08/03588-0 - Development, standardization and biological evaluation of dried extracts os medicinal and aromatic plants
Grantee:Wanderley Pereira Oliveira
Support Opportunities: Regular Research Grants