Extraction of hydroxycinnamic acids (ferulic and p-coumaric) from rice straw alkaline black liquor using Pluronic F-127 for potential applications in the cosmetics industry

Author(s)

Maia, Alana M. M. ; Pessoa-Junior, Adalberto ; Roberto, Ines C.

• Document type: Journal article
• Source: INDUSTRIAL CROPS AND PRODUCTS; v. 201, p. 7-pg., 2023-05-24.

Abstract

In the present study, ferulic (FA) and p-coumaric (pCA) acids were extracted from rice straw (Oryza sativa) alkaline black liquor by an aqueous two-phase system (ATPS) based on cloud point of surfactant/copolymer Pluronic F-127 (PF-127). An acid precipitation process was studied as a primary purification step of FA and pCA and next, an extraction of these hydroxycinnamic acids (HAs) using PF-127 in different concentrations (1.1-17.3% w/w) was performed. The results showed that in PF-127 concentration of 9.4% w/w, yield extrac-tions of 75.8% for FA and 74.3% for pCA were achieved. In addition, FA and pCA were concentrated 2.3 and 2.5 -fold, respectively, compared to their original concentrations in the liquor, resulting in a PF-127 gel containing 0.12% w/w HAs. This material will be further investigated for potential applications in the cosmetics industry as an alternative for obtaining high value-added products in a rice straw-based biorefinery. Data availability: Data will be made available on request. (AU)

• FAPESP's process: 20/06982-3 - Chimeric and pegylated L-asparaginase: study of the conditions of expression, production and purification of an innovative anti-leukemic biopharmaceutical with low immunogenic potential
• Grantee: Adalberto Pessoa Junior
• Support Opportunities: Regular Research Grants