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

Plants

Paul Kosma¹  Markus Blaukopf¹  Apinun Kanpiengjai²  Kridsada Unban³  Chartchai Khanongnuch³  Jakkrit Aisara⁴  Pairote Wongputtisin⁵  Somkid Deejing⁵  Chutamas Maneewong⁵ 

[1] Department of Chemistry, BOKU University of Natural Resources and Life Science, 1190 Vienna, Austria;Division of Biochemistry and Biochemical Technology, Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;Division of Biotechnology, School of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;Graduate Program in Biotechnology, The Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand;Program in Biotechnology, Faculty of Science, Maejo University, Chiang Mai 50290, Thailand;

关键词: red onion;    fructooligosaccharides;    prebiotics;    bifidogenic effect;   

DOI  :  10.3390/plants10112401

来源: DOAJ

【 摘 要 】

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 Bifidobacteirum breve, 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.

【 授权许可】

Unknown