Optimization and Comparison of High-Pressure-Assisted Extraction of Phenolic Compounds from Olive Pomace

2022-12-16
Okur, İlhami
Öztop, Halil Mecit
Alpas, Hami
Show full item record
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
141
views
86
downloads
In this study, it was aimed to find the optimum condition for extraction of phenolic compounds from olive pomace by using high-pressure-assisted extraction (HPAE). In this method, different pressure parameters (300-500 MPa), times (5-15 min), and ethanol concentrations (50-90% v/v) were used. According to Box-Behnken design, 15 experimental runs were performed to find the optimum condition of total phenolic and oleuropein contents. Also, the optimum HPAE condition was compared with that of classical solvent extraction (CSE). Based on the results, the optimum HPAE condition was chosen as 409 MPa for 11.16 min with 63.74% v/v ethanol concentration. According to ANOVA results, pressure, time, and ethanol concentration had significant effects on the total phenolic content and oleuropein content (p <= 0.05). Compared to CSE, it was found that HPAE increased the total phenolic content, antioxidant capacity, and oleuropein content significantly. According to scanning electron microscopy and Fourier transform infrared spectroscopy results, it was found that the mass-transfer rate of phenolic compounds increased because of morphological changes, but there were no chemical changes in phenolic compounds observed when HPAE treatment was applied. Overall, it can be said that HPAE treatment was an effective method to improve the recovery of phenolic compounds from olive pomace compared to the traditional treatment.
olive pomace, high pressure-assisted extraction, optimization, oleuropein, phenolic compounds, HIGH HYDROSTATIC-PRESSURE, BIOACTIVE COMPOUNDS, ANTIOXIDANT ACTIVITY, HYDROXYTYROSOL, ANTHOCYANINS, INGREDIENTS, TECHNOLOGY, OLEUROPEIN, high pressure-assisted extraction, oleuropein, olive pomace, optimization, phenolic compounds
https://hdl.handle.net/11511/101701
ACS FOOD SCIENCE & TECHNOLOGY
Department of Food Engineering, Article

Suggestions

High-Pressure-Assisted Extraction of Phenolic Compounds from Olive Leaves: optimization and Comparison with Conventional Extraction
Okur, İlhami; Namlı, Serap; Öztop, Halil Mecit; Alpas, Hami (2023-01-20)
The scope of the study was to optimize high-pressure-assisted extraction (HPAE) conditions for the extraction of phenolic compounds from olive leaves and to compare the optimum HPAE conditions with conventional extraction (CE) (at 50 °C for 30 min). In this regard, different treatment pressure levels (300-500 MPa), time (5-15 min), and solid-to-solvent ratios (0.1-0.3 w/v) were used to optimize the total phenolic content (TPC) and oleuropein content by using the Box-Behnken design. According to the results,...
Improving the Recovery of Phenolic Compounds from Spent Coffee Grounds (SCG) by Environmentally Friendly Extraction Techniques
Okur, İlhami; Söyler, Ulviye Betül; Öztop, Halil Mecit; Alpas, Hami (MDPI AG, 2021-1-25)
The aim of this study was to investigate and compare the effects of different extraction techniques (high hydrostatic pressure-assisted extraction (HHPE), ultrasound-assisted extraction (UAE), and classical solvent extraction (CSE)) on phenolic compounds from spent coffee grounds (SCG). Different HHPE parameters (300, 400 and 500 MPa at 25 °C for 5, 10 and 15 min) and UAE parameters (40%, 50%, and 60% amplitude at 25 °C for 5, 10 and 15 min) were used. These techniques were compared with CSE (at 50 °C for 3...
IMPROVING THE RECOVERY OF PHENOLIC COMPOUNDS FROM DIFFERENT FOOD WASTES BY NOVEL FOOD TECHNOLOGIES
Okur, İlhami; Alpas, Hami; Öztop, Halil Mecit; Department of Food Engineering (2022-11-23)
The main scope of this dissertation was to investigate the effects of High Hydrostatic Pressure-Assisted Extraction (HHPE) on phenolic compounds from different food wastes. The other aim of this study was to compare HHPE with conventional solvent extraction (CSE). At this study, three different food wastes namely spent coffee ground (SCG), olive leaves and olive pomace were used. In the first part of the study, the effect of HHPE on the spent coffee ground was examined. Three different pressure levels (300...
Optimization of ethanol-water extraction of lignans from flaxseed
Zhang, Zhen-Shan; Li, Dong; Wang, Li-Jun; Özkan, Necati; Chen, Xiao Dong; Mao, Zhi-Huai; Yang, Hong-Zhi (2007-10-01)
The optimal conditions for the extraction of lignans from flaxseed were determined. A second-order regression for rotation-orthogonal composite design was used to investigate the effects of three independent variables, namely ethanol concentration (%), extraction temperature (degrees C, and extraction time (h) on the response, the acquired ratio of lignans. The independent variables were coded at five levels and their actual values selected on the basis of results of single-factor experiment. The second-ord...
Investigation of extraction methodologies for quantitative determination of polycyclic aromatic hydrocarbons in sediments
Topal, Tansel; Tuncel, Semra G.; Department of Chemistry (2011)
The extraction procedures for the determination of polycyclic aromatic hydrocarbons (PAH) concentrations in sediment samples had been developed by using GC-FID and GC-MS. The optimized methods were soxhlet extraction, ultrasonic bath extraction and solid phase micro extraction (SPME). In order to search out the main factors affecting extraction efficiencies of the methods, factorial design was used. The best extraction method was chosen and optimum values for main factors were selected for the development o...
Citation Formats
İ. Okur, H. M. Öztop, and H. Alpas, “Optimization and Comparison of High-Pressure-Assisted Extraction of Phenolic Compounds from Olive Pomace,” ACS FOOD SCIENCE & TECHNOLOGY, vol. 2, no. 12, pp. 1862–1869, 2022, Accessed: 00, 2023. [Online]. Available: https://hdl.handle.net/11511/101701.
METU IIS - Integrated Information Service open@metu.edu.tr