| Title | Hydrothermal pretreatment for the production of prebiotic oligosaccharides from tobacco stem |
|---|---|
| ID_Doc | 29197 |
| Authors | Santana, MB; Soares, LB; Zanella, E; da Silva, MF; Stambuk, BU; Goldbeck, R; Ambrosi, A; Zielinski, A; Poletto, P; Ienczak, JL |
| Title | Hydrothermal pretreatment for the production of prebiotic oligosaccharides from tobacco stem |
| Year | 2023 |
| Published | |
| Abstract | Tobacco stem is an abundant and inexpensive renewable source to produce prebiotics by circular economy. In this study, hydrothermal pretreatments were evaluated on the release of xylooligosaccharides (XOS) and cellooligosaccharides (COS) from the tobacco stem by a central composite rotational design associated with response surface methodology to evaluate the effects of temperature (161.72 to 218.3 degrees C) and solid load (SL) (2.93 to 17.07%). XOS were the main compounds released to the liquor. Desirability function was performed to maximize the production of XOS and minimize the effects of release of monosaccharides and degradation compounds. The result indicated yield of 96% w[XOS]/w[xylan] for 190 degrees C-2.93% SL. The highest value for COS and total oligomers content (COS + XOS) was 6.42 g/L and 17.7 g/L, respectively, for 190 degrees C-17.07% SL. The mass balance for the best yield XOS condition predicted 132 kg of XOS (X2-X6) from 1000 kg of tobacco stem. |
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