OPTIMIZATION OF ULTRASONIC-ASSISTED EXTRACTION PARAMETERS FOR ANTIOXIDANTS FROM Curcuma longa L.
In this study, ultrasonication was used to extract antioxidant compounds such as polyphenols, flavonoids, and curcuminoids from turmeric (Curcuma longa L.) The influences of time, ethanol concentration and temperature as three independent factors on the extraction of the total phenolic content were...
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| Format: | Article |
| Language: | English |
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Trakya University
2018-10-01
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| Series: | Trakya University Journal of Natural Sciences |
| Subjects: | |
| Online Access: | https://dergipark.org.tr/en/pub/trkjnat/issue/39729/344985 |
| Summary: | In this study, ultrasonication was
used to extract antioxidant compounds such as polyphenols, flavonoids, and
curcuminoids from turmeric (Curcuma longa
L.) The influences of time, ethanol concentration and temperature as three independent
factors on the extraction of the total phenolic content were evaluated by the
Folin-Ciocalteu method and the antioxidant capacities by the ABTS and chromium
reducing antioxidant capacity (CHROMAC) methods. The central composite design
(CCD) with a multi-response surface methodology (MRSM) was used for the
statistical modeling of the response data followed by the regression and analysis of variance
(ANOVA) to determine the significance of the model and the factors. The
response predictions obtained at optimum extraction conditions of an extraction
time of 64min, an ethanol concentration of 82% (v/v) and an extraction
temperature of 32°C were 47.32mg GAE/g (for Folin-Ciocalteu), 29.15 (for ABTS)
and 5.17mg TE/g (for CHROMAC). The predicted values obtained from the
multi-response surface methodology agreed with the experimental values data 95%
confidence level. These data indicate that the multi-response surface
methodology is applicable for optimizing the ultrasonic-assisted extraction of
antioxidant compounds from C. longa. |
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| ISSN: | 2147-0294 2528-9691 |