Foam-forming properties of Ilex paraguariensis (mate) saponin: foamability and foam lifetime analysis by Weibull equation

Química Nova

Canto, Gizele S.¹  Peixoto, Maria P. G.¹  Treter, Janine¹  Universidade Federal de Santa Maria, Santa Maria, Brasil¹  Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil¹  Ortega, George G.¹ 

关键词: saponin;    Ilex paraguariensis;    foam stability.;   

DOI  :  10.1590/S0100-40422010000700003

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Saponins are natural soaplike foam-forming compounds widely used in foods, cosmetic and pharmaceutical preparations. In this work foamability and foam lifetime of foams obtained from Ilex paraguariensis unripe fruits were analyzed. Polysorbate 80 and sodium dodecyl sulfate were used as reference surfactants. Aiming a better data understanding a linearized 4-parameters Weibull function was proposed. The mate hydroethanolic extract (ME) and a mate saponin enriched fraction (MSF) afforded foamability and foam lifetime comparable to the synthetic surfactants. The linearization of the Weibull equation allowed the statistical comparison of foam decay curves, improving former mathematical approaches.

【 授权许可】

Unknown