Inulin extraction from Stevia rebaudiana roots in an autoclave

Inulin is a polymer of d-fructose, characterized by the presence of a terminal glucose, and are a major component of Stevia rebaudiana roots. This type of polymer has nutritional properties and technological applications, such as fat substitutes in low-calorie foods and as the coating of pharmaceuti...

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Bibliographic Details
Published in:Carbohydrate research 2023-08, Vol.530, p.108850-108850, Article 108850
Main Authors: Mariano, Tamara Borges, Silva Lima, Hevelyn Regina da, Cotrim Ribeiro, Susana Tavares, Santos Filho, José Rivaldo do, Serrato, Rodrigo Vassoler, Reis, Adriano Valim, Gonçalves, Regina Aparecida Correia, Oliveira, Arildo José Braz de
Format: Article
Language:English
Subjects:
Autoclave extraction
drugs
energy
fructose
glucose
Inulin
mass spectrometry
nuclear magnetic resonance spectroscopy
polymerization
polymers
response surface methodology
RSM
Stevia rebaudiana
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Summary:Inulin is a polymer of d-fructose, characterized by the presence of a terminal glucose, and are a major component of Stevia rebaudiana roots. This type of polymer has nutritional properties and technological applications, such as fat substitutes in low-calorie foods and as the coating of pharmaceuticals. The aim of this study was to evaluate an alternative method for inulin extraction, in terms of extraction time and yield, since the traditional method of extraction under reflux is both time and energy consuming. Using the response surface methodology (RSM) with Box-Behnken design it was observed that the alternative extraction method using autoclave presented similar yields to the reflux-based method, but with a shorter extraction time, 121 °C by 17.41 min 1H Nuclear Magnetic Resonance and Matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-ToF-MS) analysis showed that inulin crude extract from S. rebaudiana roots obtained by autoclave extraction had a higher degree of polymerization when compared to those obtained by the traditional method. Thus, it is concluded that the proposed method using an autoclave is a faster alternative for the extraction of inulin. [Display omitted] •Stevia rebaudiana (SrR) roots are an emerging agricultural waste.•SrR showed to be a good source of inulin-rich extracts.•Conventional and autoclave assisted extraction were used.•Autoclave assisted extraction followed higher DP inulin obtention.
ISSN:0008-6215
1873-426X
DOI:10.1016/j.carres.2023.108850