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Microwave Assisted Extraction of Defatted Roselle (Hibiscus sabdariffa L.) Seed at Subcritical Conditions with Statistical Analysis
Joint Authors
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-01-10
Country of Publication
Egypt
No. of Pages
10
Abstract EN
Roselle seeds are the waste product of roselle processing, but they are now labeled as a polyphenol source with great herbal quality.
In this work, polyphenols were extracted using ethanol-water (70% (v/v)) in a closed vessel under microwave irradiation.
The main objective was to determine the optimal parameters statistically.
The influence of extraction time (4–10 min), microwave power (100–300 W), and solvent/solid ratio (25–100 mL/g) was studied.
The total phenolic and flavonoids content were determined using Folin-Ciocalteu and aluminum chloride methods, respectively.
Without temperature control, the subcritical conditions could occur and the highest flavonoid content (14.4251 mg QE/g) was achieved at 158°C and 16.4 bar.
Although the optimum MAE conditions (10 min, 300 W, and 97.7178 mL/g) resulted in the highest yield (65.0367%) and phenolic content (18.2244 mg GAE/g), low flavonoids content (6.4524 mg QE/g) was unexpectedly obtained due to degradation at 163°C.
American Psychological Association (APA)
Yusoff, N. I.& Leo, C. P.. 2017. Microwave Assisted Extraction of Defatted Roselle (Hibiscus sabdariffa L.) Seed at Subcritical Conditions with Statistical Analysis. Journal of Food Quality،Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1175923
Modern Language Association (MLA)
Yusoff, N. I.& Leo, C. P.. Microwave Assisted Extraction of Defatted Roselle (Hibiscus sabdariffa L.) Seed at Subcritical Conditions with Statistical Analysis. Journal of Food Quality No. 2017 (2017), pp.1-10.
https://search.emarefa.net/detail/BIM-1175923
American Medical Association (AMA)
Yusoff, N. I.& Leo, C. P.. Microwave Assisted Extraction of Defatted Roselle (Hibiscus sabdariffa L.) Seed at Subcritical Conditions with Statistical Analysis. Journal of Food Quality. 2017. Vol. 2017, no. 2017, pp.1-10.
https://search.emarefa.net/detail/BIM-1175923
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1175923