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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Xylooligosaccharides production chain in sugarcane biorefineries: From the selection of pretreatment conditions to the evaluation of nutritional properties

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Author(s):
Milessi, Thais S. [1, 2] ; Corradini, Felipe A. S. [3] ; Marcal, Joao V. M. [1] ; Baldez, Thais O. [3] ; Kopp, Willian [1] ; Giordano, Roberto C. [1, 3] ; Giordano, Raquel L. C. [1, 3]
Total Authors: 7
Affiliation:
[1] Univ Fed Sao Carlos, Dept Chem Engn, Rodovia Washington Luis, Km 235, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed Itajuba, Inst Nat Resources, Av Benedito Pereira Santos 1303, BR-37500903 Itajuba, MG - Brazil
[3] Fed Univ Sao Carlos PPEQ UFSCar, Grad Program Chem Engn, Rodovia Washington Luis, Km 235, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: INDUSTRIAL CROPS AND PRODUCTS; v. 172, NOV 15 2021.
Web of Science Citations: 0
Abstract

Xylooligosaccharides (XOs) are xylose oligomers that stimulate the growth of probiotic microorganisms and the production of substances with antimicrobial activity, such as bacteriocins. XOs are of great interest to the food and pharmaceutical industries and represent a promising product for the valorization of sugarcane bagasse in a biorefinery context. Here, the whole XOs production chain from sugarcane bagasse was studied, starting with biomass pretreatment, enzymatic hydrolysis of the hemicellulose fraction, purification and evaluation of nutritional properties of the final product. Hydrothermal and organosolv pretreatments stood out among four pretreatment alternatives, solubilizing hemicellulose mainly in the form of oligomers. Hydrothermal conditions for the highest XOs yield were determined (185 degrees C, 10 min, 1:10 solid:liquid ratio). Enzymatic conversion to XOs using an endoxylanase reached app. 90 %, for both hydrothermal and organosolv liquors. Prebiotic and antimicrobial properties of the XOs obtained after hydrothermal and organosolv pretreatments were evaluated. Both XOs presented probiotic activity, but substantially superior results were achieved for the hydrothermal pretreatment. XOs liquors were further purified using adsorption on activated charcoal and the purified XOs liquor significantly increased the cell concentration of probiotic lactic bacteria (L. acidophilus, L. reuteri and L. rhamnosus). The presence of bacteriocins with antimicrobial activity against Bacillus subtilis was also detected in culture plates (40 AU/mL). Although still requiring further optimization of purification steps, the results provide important information for developing sugarcane biorefineries producing XOs. (AU)

FAPESP's process: 18/14552-9 - Effect of xylooligosaccharides (XOS) obtained from sugarcane bagasse in the bactericidal action of Lactobacillus acidophylus and Lactobacillus rhamnosus GG
Grantee:João Vitor Menezes Marçal
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 16/10636-8 - From the cell factory to the Biodiesel-Bioethanol integrated biorefinery: a systems approach applied to complex problems in micro and macroscales
Grantee:Roberto de Campos Giordano
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Thematic Grants
FAPESP's process: 18/06696-0 - Production and purification of xylooligosaccharides (XOS) with high prebiotic properties from sugarcane bagasse
Grantee:Thais Suzane Milessi Esteves
Support Opportunities: Scholarships in Brazil - Post-Doctoral