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Article Publish Status: FREE
Abstract Title:

Potential of Inulin-Fructooligosaccharides Extract Produced from Red Onion (var.(Metz) Mansf.) as an Alternative Prebiotic Product.

Abstract Source:

Plants (Basel). 2021 Nov 7 ;10(11). Epub 2021 Nov 7. PMID: 34834764

Abstract Author(s):

Jakkrit Aisara, Pairote Wongputtisin, Somkid Deejing, Chutamas Maneewong, Kridsada Unban, Chartchai Khanongnuch, Paul Kosma, Markus Blaukopf, Apinun Kanpiengjai

Article Affiliation:

Jakkrit Aisara

Abstract:

Red onion is a popular ingredient in many Thai dishes and has recently been promoted for commercial cultivation. In this study, inulin-fructooligosaccharides (inulin-FOSs) were extracted from red onions in a simplified extraction method. The extract contained 24.00± 0.38 g/L free glucose, fructose and sucrose, while the level of FOSs was recorded at 74.0 ± 2.80 g/L with a degree of polymerization of 4.1. The extract was resistant to simulated gastrointestinal conditions, while selectively promoting probiotic lactobacilli. These outcomes resulted in inhibitory effects against various pathogenic bacteria. The in vitro batch culture fermentation of the extract by natural mixed culture indicated that an unknown sugar identified as neokestose was more rapidly fermented than 1-kestose and other longer-chain inulin-FOSs. Notably, neokestose selectively encouraged a bifidogenic effect, specifically in terms of the growth of, which is an infant-type probiotic bacterium. This is the first report to state that neokestose could selectively enhance the bifidogenic effect. In summary, inulin-FOSs extract should be recognized as a multifunctional ingredient that can offer benefits in food and pharmaceutical applications.

Study Type : In Vitro Study

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