Is nanofiltration an efficient technology to recover and stabilize phenolic compounds from guava (Psidium guajava) leaves extract?  

作　　者：Giordana Demaman Arend Lenilton Santos Soares Callebe Camelo-Silva Marcio Augusto Ribeiro Sanches Frederico Marques Penha Elixabet Díaz-De-Cerio Vito Verardo Elane Schwinden Prudencio Antonio Segura-Carretero Bruna Tischer José Carlos Cunha Petrus Silvani Verruck Katia Rezzadori 

机构地区：[1]Department of Chemical and Food Engineering,Federal University of Santa Catarina,Florianopolis,SC,Brazil [2]Food Engineering and Technology Department,State University of São Paulo,São José do Rio Preto,SP,Brazil [3]Department of Chemical Engineering,KTH Royal Institute of Technology,Teknikringen 42,SE100-44,Stockholm,Sweden [4]Department of Nutrition and Food Science,University of Granada,Campus of Cartuja,E-18071,Granada,Spain [5]Department of Analytical Chemistry,and Functional Food Research and Development Center (CIDAF),University of Granada,Granada,Spain [6]Department of Food Technology,Institute of Food Science and Technology,Federal University of Rio Grande do Sul,Brazil [7]Department of Food Science and Technology,Federal University of Santa Catarina,Florianopolis,SC,Brazil

出　　处：《Food Bioscience》2022年第6期1307-1313,共7页食品生物科学（英文）

基　　金：the National Council for Scientific and Technological Development(CNPq-Brazil),grant number[407877/2018-5];Coordination for the Improvement of Higher Level Personnel(CAPES-Brazil)for the financial support and scholarships;Vito Verardo thanks the Spanish Ministry of Economy and Competitiveness(MINECO)for“Ramon y Cajal”contract(RYC-2015-18795);the University of Granada for its support(project PPJI2017.16).

摘　　要：Guava leaves (Psidium guajava ) are popularly known due to their effects antidiabetic, antihypertensive, anti-inflammatory, antidiarrheal, and functional properties. Processes for the concentration of these extracts are necessary since their pharmacological effects are dose-dependent. In this work, guava leaves aqueous extract (GE) concentration was carried out in nanofiltration (NF) equipment. Process performance was evaluated in terms of permeate flux, flux decline modeling, and extract quality (compounds characterization, total phenolic content and antioxidant activity). NF allowed an increase in phenolic compounds next to 20-times, retention coefficients of total phenolic compounds (99%) and enhanced antioxidant capacity (an increase of 4 and 9-fold for ABTS and DPPH, respectively) compared to the initial GE. Forty-two phenolic compounds were identified, being catechin (594.56 mg mL^(−1) ) and vescalagin (295.39 mg mL^(−1) ) the main compounds. All phenolics presented a significant increase (p < 0.05) after the concentration suggesting that NF is efficient for the recovery and concentration of bioactive compounds and poses as an alternative to obtain functional products and improve added value in agro-industrial residues.

关 键 词：Agro-industrial waste Tangential filtration Membrane separation Bioactive compounds Antioxidant activity 

分 类 号：R28[医药卫生—中药学]