Data/hora: 06/06/2024 10:21:42

Provedor de dados: | 111
País: | China
Título: | Optimization of the pulsed electric field -assisted extraction of functional compounds from Nepeta binaludensis
Autores: | Azimi Mahalleh, Afsaneh; Sharayei, Parvin; Mortazavi, Seyed Ali; Azarpazhooh, Elham; Niazmand, Razieh.
Data: | 2019-12-16
Ano: | 2019
Palavras-chave: | Phenolic compounds; Nepeta binaludensis; Response Surface Methodology; Pulsed electric field; Antimicrobial activity.
Resumo: | Pulsed electric field (PEF) treatment was used for extracting effective components from Nepeta (Nepeta binaludensis Jamzad). A response surface method was used to investigate the effects of independent process variables (voltage of pulsed electric field (VPEF): 2, 4 and 6 KV/cm and number of pulsed electric field (NPEF): 20, 40 and 60 n) on the yield (Y) and antioxidant characteristics: total phenolic compounds (TPC), 1,1- diphenyl -2- picrylhydrazyl free radical scavenging (DPPHsc), ferric reducing-antioxidant power (FRAP), half  maximal of radical-scavenging activity (IC50) of Nepeta extract (aerial parts). According to Derringer’s desired function approach, the optimal conditions based on both individual and combinations of all process variables were VPEF 6KV/cm and NPEF 60 n. At this optimum condition, the Y, TPC, DPPHSC, FRAP, and IC50 of the extract were found to be 11.36%, 417.85 mg GA/g, 74.8%, 1688.53µmol Fe2+/g, and 0.32 mg/mL, respectively. The experimental values were in a good agreement with the predicted values. Also, the extract at optimal conditions of PEF (PEFopt-x) had a higher quantity of chlorogenic acid, caffeic acid, rutin, para-coumaric acid, rosemarinic acid, Kaempferol, and apigenin compared with solvent extract. The addition of PEFopt-x to the purified soybean oil at the levels of 6% increased oxidative stability index (2.65 h) close to butylated hydroxy toluene (2.78h).
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.cigrjournal.org/index.php/Ejounral/article/view/5391
Editor: | International Commission of Agricultural and Biosystems Engineering

Relação:

http://www.cigrjournal.org/index.php/Ejounral/article/view/5391/3205

http://www.cigrjournal.org/index.php/Ejounral/article/downloadSuppFile/5391/2398

Formato: | application/pdf

Fonte:

Agricultural Engineering International: CIGR Journal; Vol 21, No 4 (2019): CIGR Journal; 184-194

1682-1130

Fonte: | Copyright (c) 2019 Agricultural Engineering International: CIGR Journal