Antioxidant activity and physical-chemical properties of spray and spouted bed dried extracts of Bauhinia forficata

作者：Fernandes Souza Claudia Regina; Georgetti Sandra Regina; Salvador Marcos Jose; Vieira Fonseca Maria Jose; Oliveira Wanderley Pereira

来源：Brazilian Journal of Pharmaceutical Sciences, 2009, 45(2): 209-218.

DOI：10.1590/s1984-82502009000200004

• Bauhinia forficata/antioxidant activity
• Bauhinia forficata/dried extract/properties
• Flavonoids/qualitative analysis
• Spouted bed/utilization
• Spray drying/utilization

Two distinct drying methods (spouted bed and spray drying) were used for production of dried extracts of Bauhinia forficata Link (Leguminosae, Caesalpinoideae). High-quality powder products in terms of physical and chemical properties were obtained. HPLC fingerprints revealed that the chromatographic profiles of flavonoid compounds present in the dried extract did not change significantly, due to drying. In general, the spouted bed drying caused a degradation of total flavonoids than was lower than that of the spray drying. Antioxidant properties of the dried extract, examined by their radical scavenging activity using 2,2-diphenyl-1-picrylhydrazyl radical (DPPH center dot) and inhibition of lipid peroxidation induced by Fe+2 assays (LPO), confirmed their antioxidant potential. The slight reduction in scavenging activity of the dried extracts may be associated with the occurrence of oxidative reactions, decomposition or losses of thermolabile compounds, induced by the heat.

• 出版日期2009-6