Recent Advancements in the Valorization of Agro-Industrial Food Waste for the Production of Nanocellulose

The rising climate change concerns over the excessive exploitation of non-renewable sources have necessitated the need for alternative renewable and eco-friendly resources for the production of innovative materials, achieving the targets of bioeconomy. Lignocellulosic biomass (LB) constituted by pol...

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Bibliographic Details
Published in:Applied sciences 2023-05, Vol.13 (10), p.6159
Main Authors: Nargotra, Parushi, Sharma, Vishal, Tsai, Mei-Ling, Hsieh, Shu-Ling, Dong, Cheng-Di, Wang, Hui-Min David, Kuo, Chia-Hung
Format: Article
Language:English
Subjects:
Agricultural wastes
agro-industrial food waste
Biodegradability
Biodegradation
Biodiesel fuels
Biofuels
Biological products
Biomass
Biomedical materials
Biopolymers
Cellulose
circular bioeconomy
Climate change
Climatic changes
Crop residues
Environmental aspects
Food industry
Food waste
Fractionation
Glucose
Hydrogen bonds
Industrial areas
Industrial wastes
Lignin
Lignocellulose
lignocellulosic biomass
Mechanical properties
nanocellulose
Nanocrystals
Nanomaterials
Physical properties
Polymers
pretreatment
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Summary:The rising climate change concerns over the excessive exploitation of non-renewable sources have necessitated the need for alternative renewable and eco-friendly resources for the production of innovative materials, achieving the targets of bioeconomy. Lignocellulosic biomass (LB) constituted by polymeric sugars and lignin is an abundantly available plant-based renewable material in the form of agro-industrial food waste and crop residues that can be exploited for the production of an array of value-added chemicals and bioproducts. Cellulose is the most abundant natural and biodegradable organic polymer on earth derived from LB, with wide scale applications in the lignocellulosic biorefineries and food industries. The negative effects of food waste from agro-industrial activities could be reduced through the recovery of cellulose from these wastes and converting it into valuable forms. However, the extraction of cellulose from LB is a difficult task owing to the recalcitrant nature of biomass that restricts the easy accessibility of cellulose for value addition. Therefore, a suitable cellulose extraction method through the fractionation of LB is necessary for a better cellulose yield. Furthermore, owing to the enormous potential of nanocellulose (NC), researchers are keenly interested in developing ecologically acceptable cellulose extraction methods. Cellulose nanofibrils and nanocrystals confer excellent mechanical properties, non-toxic characteristics and biodegradability, due to which they possess wide-scale applications in diverse industrial sectors. The current review emphasizes the potential role of cellulose extraction and NC production from agro-food waste. The different pretreatment methods for their extraction from LB are outlined. The applications of nanocellulose in different areas are also discussed. The review also highlights the recent trends, challenges and future directions in the development of cellulose and NC-based commercial products.
ISSN:2076-3417
2076-3417
DOI:10.3390/app13106159