Optimizing extraction methods by a comprehensive experimental approach and characterizing polyphenol compositions of Ecklonia radiata.

Food Chem

School of Agriculture, Food and Ecosystem Sciences, Faculty of Science, The University of Melbourne, Parkville, VIC 3010, Australia; Centre for Sustainable Bioproducts, School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC 3217, Australia. Electronic address: hafiz.suleria@u

Published: October 2024


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

Brown seaweed Ecklonia radiata harbors valuable polyphenols, notably phlorotannins, prized for their health benefits. This study optimized phlorotannin extraction via conventional solvent extraction and ultrasound-assisted extraction methods, utilizing variable concentrations of ethanol. Employing fractional factorial designs, key variables were identified. Steepest ascent/descent method and central composite rotatable designs refined optimal conditions, enhancing phlorotannin and polyphenol yields, and antioxidant capacities. Under optimized conditions, phlorotannin contents reached 2.366 ± 0.01 and 2.596 ± 0.04 PGE mg/g, total polyphenol contents peaked at 10.223 ± 0.03 and 10.836 ± 0.02 GAE mg/g. Robust antioxidant activity was observed: DPPH and OH radical scavenging capacities measured 27.891 ± 0.06 and 17.441 ± 0.08 TE mg/g, and 37.498 ± 1.12 and 49.391 ± 0.82 TE mg/g, respectively. Reducing power capacities surged to 9.016 ± 0.02 and 28.110 ± 0.10 TE mg/g. Liquid chromatography-mass spectrometry (LC-MS) and high-performance liquid chromatography (HPLC) analyses revealed enriched antioxidant compounds. Variations in polyphenol profiles were noted, potentially influencing antioxidant capacity nuances. This study illuminated the potential of E. radiata potential as a polyphenol source and offers optimized extraction methods poised to benefit various industries.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.foodchem.2024.139926DOI Listing

Publication Analysis

Top Keywords

extraction methods
12
ecklonia radiata
8
polyphenol
5
mg/g
5
optimizing extraction
4
methods comprehensive
4
comprehensive experimental
4
experimental approach
4
approach characterizing
4
characterizing polyphenol
4

Similar Publications

Management of Transvenous Leads in Patients With Iatrogenic Lead Perforation.

J Cardiovasc Electrophysiol

September 2025

Cardiac Electrophysiology Section, Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, Ohio, USA.

Introduction: Iatrogenic lead perforation is a rare but serious complication of cardiac implantable electronic device (CIED) implantation. Evidence on percutaneous management of subacute or delayed cases remains limited.

Methods: We retrospectively reviewed 38 patients treated for iatrogenic lead perforation between January 2012 and October 2024.

View Article and Find Full Text PDF

Background: Interventions aimed to increase healthcare provider empathy and capacity to deliver person-centered care have been shown to improve healthcare seeking and outcomes. In the context of self-injectable contraception, empathetic counseling and coaching may be promising approaches for addressing "fear of the needle" among clients interested in using subcutaneous depot medroxyprogesterone (DMPA-SC). In Nigeria, the Delivering Innovation in Self-Care (DISC) project developed and evaluated an empathy-based in-service training and supportive supervision intervention for public sector family (FP) planning providers implemented in conjunction with community-based mobilization.

View Article and Find Full Text PDF

Obsessive-compulsive disorder (OCD) is a chronic and disabling condition affecting approximately 3.5% of the global population, with diagnosis on average delayed by 7.1 years or often confounded with other psychiatric disorders.

View Article and Find Full Text PDF

This study was conducted to investigate the techniques and complications of enlarged uterine extraction during minimally invasive surgery for uterine malignancy. The electronic medical record was queried for patients with uterine malignancy and enlarged uterus (≥ 250 g) who underwent primary hysterectomy with laparoscopic or robotic approach. Statistical analysis was performed using Fisher's exact test for categorical variables and Kruskal-Wallis test for continuous variables.

View Article and Find Full Text PDF

Aim: To summarize the literature on quantitative measures of physical demands in eldercare, with attention to differences between temporary and permanent workers, and to identify gaps to guide future physiological research.

Methods: We searched Scopus, Web of Science, and PubMed for English and Swedish peer-reviewed studies on physical demands in eldercare. Risk of bias was assessed, and descriptive data extracted.

View Article and Find Full Text PDF