Tags

Type your tag names separated by a space and hit enter

Optimization of ultrasonic-assisted extraction of natural antioxidants from rice bran using response surface methodology.
Ultrason Sonochem. 2011 Nov; 18(6):1279-86.US

Abstract

Ultrasonic technology was applied for extraction of polyphenols and antioxidants from the rice bran using ethanol as a food grade solvent. Response surface methodology (RSM) was used to optimize experimental conditions for extraction of polyphenols and antioxidants. Three independent variables such as solvent percentage (%), temperature (°C) and time (min) were studied. Effect of ethanol concentration was found to be significant on all responses. Total phenolic content (TPC) varied from 2.37 to 6.35mg gallic acid equivalent/g of dry sample. Antioxidant activity of the extracts was determined by the ferric reducing antioxidant power (FRAP) assay and scavenging activity of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. FRAP and DPPH values varied from 31.74 to 57.23μmol Fe(2+)/g of dry sample and 16.88% to 55.61% inhibition, respectively. Extraction yields ranged from 11 to 20.2%. Optimal ultrasonic-assisted extraction (UAE) conditions were identified as 65-67% ethanol, 51-54°C, 40-45min. The experimental values agreed with those predicted by SRM models, thus indicating suitability of the model employed and the success of RSM in optimizing the extraction conditions.

Links

FREE Publisher Full Text

Authors+Show Affiliations

Tabaraki R
Department of Chemistry, Faculty of Science, Ilam University, Ilam, Iran. r.tabaraki@ilam.ac.ir
Nateghi A
No affiliation info available

MeSH

AntioxidantsEthanolOryzaPolyphenolsSurface PropertiesTemperatureTime FactorsUltrasonics

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21612968

Citation

Tabaraki, Reza, and Ashraf Nateghi. "Optimization of Ultrasonic-assisted Extraction of Natural Antioxidants From Rice Bran Using Response Surface Methodology." Ultrasonics Sonochemistry, vol. 18, no. 6, 2011, pp. 1279-86.
Tabaraki R, Nateghi A. Optimization of ultrasonic-assisted extraction of natural antioxidants from rice bran using response surface methodology. Ultrason Sonochem. 2011;18(6):1279-86.
Tabaraki, R., & Nateghi, A. (2011). Optimization of ultrasonic-assisted extraction of natural antioxidants from rice bran using response surface methodology. Ultrasonics Sonochemistry, 18(6), 1279-86. https://doi.org/10.1016/j.ultsonch.2011.05.004
Tabaraki R, Nateghi A. Optimization of Ultrasonic-assisted Extraction of Natural Antioxidants From Rice Bran Using Response Surface Methodology. Ultrason Sonochem. 2011;18(6):1279-86. PubMed PMID: 21612968.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Optimization of ultrasonic-assisted extraction of natural antioxidants from rice bran using response surface methodology. AU - Tabaraki,Reza, AU - Nateghi,Ashraf, Y1 - 2011/05/08/ PY - 2010/12/29/received PY - 2011/05/02/revised PY - 2011/05/04/accepted PY - 2011/5/27/entrez PY - 2011/5/27/pubmed PY - 2011/12/30/medline SP - 1279 EP - 86 JF - Ultrasonics sonochemistry JO - Ultrason Sonochem VL - 18 IS - 6 N2 - Ultrasonic technology was applied for extraction of polyphenols and antioxidants from the rice bran using ethanol as a food grade solvent. Response surface methodology (RSM) was used to optimize experimental conditions for extraction of polyphenols and antioxidants. Three independent variables such as solvent percentage (%), temperature (°C) and time (min) were studied. Effect of ethanol concentration was found to be significant on all responses. Total phenolic content (TPC) varied from 2.37 to 6.35mg gallic acid equivalent/g of dry sample. Antioxidant activity of the extracts was determined by the ferric reducing antioxidant power (FRAP) assay and scavenging activity of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. FRAP and DPPH values varied from 31.74 to 57.23μmol Fe(2+)/g of dry sample and 16.88% to 55.61% inhibition, respectively. Extraction yields ranged from 11 to 20.2%. Optimal ultrasonic-assisted extraction (UAE) conditions were identified as 65-67% ethanol, 51-54°C, 40-45min. The experimental values agreed with those predicted by SRM models, thus indicating suitability of the model employed and the success of RSM in optimizing the extraction conditions. SN - 1873-2828 UR - https://www.unboundmedicine.com/medline/citation/21612968/Optimization_of_ultrasonic_assisted_extraction_of_natural_antioxidants_from_rice_bran_using_response_surface_methodology_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1350-4177(11)00097-6 DB - PRIME DP - Unbound Medicine ER -