Implementation of Auto-Hydrolysis Process for the Recovery of Antioxidants and Cellulose from Wheat Straw
Wheat straw is an easily affordable, cost-effective and natural source of antioxidants and cellulose, but its full potential is not yet utilized. In the present investigation, an auto-hydrolytic process was applied to recover both antioxidant phenolic compounds and cellulose from wheat straw. Two th...
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MDPI AG
2020-09-01
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Online Access: | https://www.mdpi.com/2076-3417/10/17/6112 |
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author | Andrea Bassani Cecilia Fiorentini Vellingiri Vadivel Alessandro Moncalvo Giorgia Spigno |
author_facet | Andrea Bassani Cecilia Fiorentini Vellingiri Vadivel Alessandro Moncalvo Giorgia Spigno |
author_sort | Andrea Bassani |
collection | DOAJ |
description | Wheat straw is an easily affordable, cost-effective and natural source of antioxidants and cellulose, but its full potential is not yet utilized. In the present investigation, an auto-hydrolytic process was applied to recover both antioxidant phenolic compounds and cellulose from wheat straw. Two three-step acid/alkaline fractionation processes were applied differing for the first step: a conventional mild acid hydrolysis or an auto-hydrolysis. The liquors from the first step were analyzed for the recovery of antioxidants, while the final residues from the whole process were analyzed for cellulose yield and purity. The auto-hydrolysis process led to a higher yield in antioxidants but also in sugars (glucose and xylose) and sugar degradation products (5-HMF, 5-MF, furfural) than the acid hydrolysis process. The overall cellulose recovery (about 45% g/100 g<sub>cellulose wheat straw dm</sub>) and purity was comparable in the two processes; therefore, the auto-hydrolysis-based process could be recommended as a potentially more environmentally friendly process to recover antioxidants and cellulose from wheat straw for different applications. Finally, a first study on the optimization of hydrolysis step was provided from the point of view of improving the cellulose yield, monitoring the sugars release during both the acid hydrolysis and the auto-hydrolysis process. |
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id | doaj.art-b1cee0a5b4eb4ce2a9ef6803a5551a7b |
institution | Directory Open Access Journal |
issn | 2076-3417 |
language | English |
last_indexed | 2024-03-10T16:37:07Z |
publishDate | 2020-09-01 |
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spelling | doaj.art-b1cee0a5b4eb4ce2a9ef6803a5551a7b2023-11-20T12:23:53ZengMDPI AGApplied Sciences2076-34172020-09-011017611210.3390/app10176112Implementation of Auto-Hydrolysis Process for the Recovery of Antioxidants and Cellulose from Wheat StrawAndrea Bassani0Cecilia Fiorentini1Vellingiri Vadivel2Alessandro Moncalvo3Giorgia Spigno4Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, ItalyDepartment for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, ItalySchool of Chemical and Biotechnology (SCBT/CARISM), SASTRA University, Thanjavur, Tamil Nadu 613401, IndiaDepartment for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, ItalyDepartment for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, ItalyWheat straw is an easily affordable, cost-effective and natural source of antioxidants and cellulose, but its full potential is not yet utilized. In the present investigation, an auto-hydrolytic process was applied to recover both antioxidant phenolic compounds and cellulose from wheat straw. Two three-step acid/alkaline fractionation processes were applied differing for the first step: a conventional mild acid hydrolysis or an auto-hydrolysis. The liquors from the first step were analyzed for the recovery of antioxidants, while the final residues from the whole process were analyzed for cellulose yield and purity. The auto-hydrolysis process led to a higher yield in antioxidants but also in sugars (glucose and xylose) and sugar degradation products (5-HMF, 5-MF, furfural) than the acid hydrolysis process. The overall cellulose recovery (about 45% g/100 g<sub>cellulose wheat straw dm</sub>) and purity was comparable in the two processes; therefore, the auto-hydrolysis-based process could be recommended as a potentially more environmentally friendly process to recover antioxidants and cellulose from wheat straw for different applications. Finally, a first study on the optimization of hydrolysis step was provided from the point of view of improving the cellulose yield, monitoring the sugars release during both the acid hydrolysis and the auto-hydrolysis process.https://www.mdpi.com/2076-3417/10/17/6112wheat strawauto-hydrolysiscellulosephenolic compoundsantioxidants |
spellingShingle | Andrea Bassani Cecilia Fiorentini Vellingiri Vadivel Alessandro Moncalvo Giorgia Spigno Implementation of Auto-Hydrolysis Process for the Recovery of Antioxidants and Cellulose from Wheat Straw Applied Sciences wheat straw auto-hydrolysis cellulose phenolic compounds antioxidants |
title | Implementation of Auto-Hydrolysis Process for the Recovery of Antioxidants and Cellulose from Wheat Straw |
title_full | Implementation of Auto-Hydrolysis Process for the Recovery of Antioxidants and Cellulose from Wheat Straw |
title_fullStr | Implementation of Auto-Hydrolysis Process for the Recovery of Antioxidants and Cellulose from Wheat Straw |
title_full_unstemmed | Implementation of Auto-Hydrolysis Process for the Recovery of Antioxidants and Cellulose from Wheat Straw |
title_short | Implementation of Auto-Hydrolysis Process for the Recovery of Antioxidants and Cellulose from Wheat Straw |
title_sort | implementation of auto hydrolysis process for the recovery of antioxidants and cellulose from wheat straw |
topic | wheat straw auto-hydrolysis cellulose phenolic compounds antioxidants |
url | https://www.mdpi.com/2076-3417/10/17/6112 |
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