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Ultrasonically assisted extraction of total carbohydrates from Stevia rebaudiana Bertoni and identification of extracts

Paper ID Volume ID Publish Year Pages File Format Full-Text
19538 43073 2010 7 PDF Available
Title
Ultrasonically assisted extraction of total carbohydrates from Stevia rebaudiana Bertoni and identification of extracts
Abstract

In the present study, in order to maximize the yield of total carbohydrates from Stevia rebaudiana Bertoni, Stevia LUYU-131 was used as test material, and response surface methodology (RSM) was employed to optimize the ultrasound-assisted extraction condition. The results indicated the optimal extraction conditions were an extraction temperature of 68 °C, a sonic power of 60 W and an extraction time of 32 min. Using the ultrasound-assisted extraction, the yield of extracts increased by a factor of 1.5 at the lower extraction temperature (68 °C) and the extraction time (32 min) substantially shortened compared with that of classical extraction. The components analysis of crude extracts revealed that the relative amount of rebaudioside A increased in the ultrasound-assisted extracts as compared with extracts obtained by classical process, and the ultrasound-assisted extracts had better quality.

Keywords
Yield; Ultrasound-assisted extraction; Rebaudioside A; Stevioside; Classical extraction, Optimization
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 88, Issues 2–3, June–September 2010, Pages 215–221
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us