Trichoderma harzianum cerato-platanin enhances hydrolysis of lignocellulosic materials |
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Authors: | Anna Pennacchio Rossana Pitocchi Giovanna Cristina Varese Paola Giardina Alessandra Piscitelli |
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Institution: | 1. Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, Naples, 80126 Italy
Equally contributing authors.;2. Department of Life Sciences and Systems Biology, University of Turin, viale P.A. Mattioli 25, Turin, 10125 Italy;3. Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, Naples, 80126 Italy |
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Abstract: | Considering its worldwide abundance, cellulose can be a suitable candidate to replace the fossil oil-based materials, even if its potential is still untapped, due to some scientific and technical gaps. This work offers new possibilities demonstrating for the first time the ability of a cerato-platanin, a small fungal protein, to valorize lignocellulosic Agri-food Wastes. Indeed, cerato-platanins can loosen cellulose rendering it more accessible to hydrolytic attack. The cerato-platanin ThCP from a marine strain of Trichoderma harzianum, characterized as an efficient biosurfactant protein, has proven able to efficiently pre-treat apple pomace, obtaining a sugar conversion yield of 65%. Moreover, when used in combination with a laccase enzyme, a notable increase in the sugar conversion yield was measured. Similar results were also obtained when other wastes, coffee silverskin and potato peel, were pre-treated. With respect to the widespread laccase pre-treatments, this new pre-treatment approach minimizes process time, increasing energy efficiency. |
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