Il progetto di dottorato studia la valorizzazione dei residui di castagno (Castanea sativa Mill.) in ottica di economia circolare per rispondere alle sfide del cambiamento climatico in agricoltura. La ricerca analizza e confronta l'efficacia biologica di due tipologie di estratti: il wood vinegar (aceto di legno ottenuto tramite pirolisi) e un estratto di cippato sviluppato in laboratorio. Attraverso test in vitro, in terra e in campo su piante modello e colture (insalata, tabacco e pomodoro), lo studio dimostra che: -i prodotti a base di castagno agiscono come biostimolanti e attivatori delle difese delle piante, migliorando la loro resilienza agli stress ambientali (siccità e salinità) senza danneggiare il suolo. -gli effetti sono dose-dipendenti: il wood vinegar mostra una doppia azione (antimicrobica ad alte dosi e promotrice della crescita a basse dosi), mentre l'estratto di cippato (WCE) agisce principalmente stimolando la crescita e i percorsi di difesa della pianta. In sintesi, la tesi dimostra che questi estratti rappresentano strumenti ecocompatibili ed efficaci per un'agricoltura sostenibile, unendo l'innovazione tecnologica alla tutela del territorio. This PhD project investigates the utilisation of chestnut (Castanea sativa Mill.) residues within a circular economy framework to address the challenges of climate change in agriculture. The research analyses and compares the biological efficacy of two types of extract: wood vinegar (produced via pyrolysis) and a wood chip extract developed in the laboratory. Through in vitro, soil and field tests on model plants and crops (lettuce, tobacco and tomatoes), the study demonstrates that: - chestnut-based products act as biostimulants and activators of plant defences, improving their resilience to environmental stresses (drought and salinity) without damaging the soil. - the effects are dose-dependent: wood vinegar exhibits a dual action (antimicrobial at high doses and growth-promoting at low doses), whilst the wood chip extract (WCE) acts primarily by stimulating the plant’s growth and defence mechanisms. In summary, the thesis demonstrates that these extracts represent environmentally friendly and effective tools for sustainable agriculture, combining technological innovation with the protection of the local environment.
Biotechnological procedures and “green extraction” strategies for the sustainable conversion of by-products, residues and wastes from agroforestry and agrifood sectors into renewable resources to support innovative agriculture and plant protection (Btech&green) / Cosimo Beltrami. - (2026).
Biotechnological procedures and “green extraction” strategies for the sustainable conversion of by-products, residues and wastes from agroforestry and agrifood sectors into renewable resources to support innovative agriculture and plant protection (Btech&green)
Cosimo Beltrami
2026
Abstract
Il progetto di dottorato studia la valorizzazione dei residui di castagno (Castanea sativa Mill.) in ottica di economia circolare per rispondere alle sfide del cambiamento climatico in agricoltura. La ricerca analizza e confronta l'efficacia biologica di due tipologie di estratti: il wood vinegar (aceto di legno ottenuto tramite pirolisi) e un estratto di cippato sviluppato in laboratorio. Attraverso test in vitro, in terra e in campo su piante modello e colture (insalata, tabacco e pomodoro), lo studio dimostra che: -i prodotti a base di castagno agiscono come biostimolanti e attivatori delle difese delle piante, migliorando la loro resilienza agli stress ambientali (siccità e salinità) senza danneggiare il suolo. -gli effetti sono dose-dipendenti: il wood vinegar mostra una doppia azione (antimicrobica ad alte dosi e promotrice della crescita a basse dosi), mentre l'estratto di cippato (WCE) agisce principalmente stimolando la crescita e i percorsi di difesa della pianta. In sintesi, la tesi dimostra che questi estratti rappresentano strumenti ecocompatibili ed efficaci per un'agricoltura sostenibile, unendo l'innovazione tecnologica alla tutela del territorio. This PhD project investigates the utilisation of chestnut (Castanea sativa Mill.) residues within a circular economy framework to address the challenges of climate change in agriculture. The research analyses and compares the biological efficacy of two types of extract: wood vinegar (produced via pyrolysis) and a wood chip extract developed in the laboratory. Through in vitro, soil and field tests on model plants and crops (lettuce, tobacco and tomatoes), the study demonstrates that: - chestnut-based products act as biostimulants and activators of plant defences, improving their resilience to environmental stresses (drought and salinity) without damaging the soil. - the effects are dose-dependent: wood vinegar exhibits a dual action (antimicrobial at high doses and growth-promoting at low doses), whilst the wood chip extract (WCE) acts primarily by stimulating the plant’s growth and defence mechanisms. In summary, the thesis demonstrates that these extracts represent environmentally friendly and effective tools for sustainable agriculture, combining technological innovation with the protection of the local environment.
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PhD_Tesi_Beltrami.pdf
accesso aperto
Descrizione: This PhD project forms part of the circular economy and the transition towards sustainable agriculture, with the aim of countering the effects of climate change by making use of residual chestnut biomass, a resource rich in bioactive compounds that is deeply rooted in the Apennine region. The research aims to evaluate and compare the biological potential of two specific products derived from this waste: wood vinegar, a by-product obtained through industrial pyrolysis, and an aqueous extract rich in tannins developed in the laboratory from chestnut wood chips. The scientific approach follows an experimental pathway of increasing complexity. It begins with in vitro assays under controlled conditions on bacterial and plant systems, then moves on to pot experiments focusing on soil functionality and plant responses to drought and salinity stress, culminating in field trials on crops and model plants such as tobacco and tomato. The ultimate aim of the thesis is to demonstrate the scientific and practical feasibility of using these extracts as environmentally friendly tools to stimulate plant growth and defences, integrating technological innovation with the economic development of rural and marginal areas.
Tipologia:
Tesi di dottorato
Licenza:
Creative commons
Dimensione
9.26 MB
Formato
Adobe PDF
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9.26 MB | Adobe PDF |
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