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Postharvest processing of hemp plant by-products: Investigation of drying kinetics, quantification of cannabidiol, and analysis of chemical composition
Authors: Mehdi Heydari Foroushani,
Tahereh Najib,
Venkatesh Meda,
Charley Sprenger,
Lorne Grieger
Identifier: CSBE23142
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Published in: CSBE-SCGAB Technical Conferences » AGM Lethbridge 2023
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Description: Hemp is an environmentally and economically friendly crop, being an attractive option for producers who primarily harvest its seeds and fiber. However, the leaves and crushed buds, by-products of this practice, contain cannabidiol (CBD) and other nutritious compounds having the potential for use in pharmaceuticals or as a source of nutrition. This study aims to provide guidelines for developing post-harvest processes of hemp by-products, in order to add value to agricultural waste and promote sustainable agriculture. The results illustrated that the hemp plant by-products mixture containing about 70% leaves and buds had an average moisture content of 59% (w.b). For safe storage and preparation for extraction, these components were dried by using various drying methods, including oven, microwave-infrared, and microwave-vacuum. Out of all the studied thin layer models, the Page model was the most appropriate model to describe the drying of the hemp plant by-products. The most abundant cannabidiol component hemp plant used in this study was CBDA, with an average of 11.55 mg/g, showing its potential to be used in pharmaceutical applications. Furthermore, our results demonstrated that using the microwave for drying hemp plants is a promising method to enhance CBD and THC contents through the decarboxylation of their acidic forms. Hemp plants' by-products were also a rich source of protein and dietary fiber with an average amount of 20 and 36%, respectively, suggesting its application for feeding purposes.
Keywords: Hemp; drying kinetics; cannabidiol; chemical composition
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Date: 2023-07-23
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Conference name: CSBE/SCGAB 2023 Annual Conference, Lethbridge, Alberta, 23-26 July 2023.
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Type: Presentation
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Publication type: Text.Abstract
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Relation:
Coverage: North_America
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
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DOI:
Description: Hemp is an environmentally and economically friendly crop, being an attractive option for producers who primarily harvest its seeds and fiber. However, the leaves and crushed buds, by-products of this practice, contain cannabidiol (CBD) and other nutritious compounds having the potential for use in pharmaceuticals or as a source of nutrition. This study aims to provide guidelines for developing post-harvest processes of hemp by-products, in order to add value to agricultural waste and promote sustainable agriculture. The results illustrated that the hemp plant by-products mixture containing about 70% leaves and buds had an average moisture content of 59% (w.b). For safe storage and preparation for extraction, these components were dried by using various drying methods, including oven, microwave-infrared, and microwave-vacuum. Out of all the studied thin layer models, the Page model was the most appropriate model to describe the drying of the hemp plant by-products. The most abundant cannabidiol component hemp plant used in this study was CBDA, with an average of 11.55 mg/g, showing its potential to be used in pharmaceutical applications. Furthermore, our results demonstrated that using the microwave for drying hemp plants is a promising method to enhance CBD and THC contents through the decarboxylation of their acidic forms. Hemp plants' by-products were also a rich source of protein and dietary fiber with an average amount of 20 and 36%, respectively, suggesting its application for feeding purposes.
Keywords: Hemp; drying kinetics; cannabidiol; chemical composition
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2023-07-23
Technical field:
Conference name: CSBE/SCGAB 2023 Annual Conference, Lethbridge, Alberta, 23-26 July 2023.
Session name:
Other information:
Type: Presentation
Format:
Publication type: Text.Abstract
Source:
Relation:
Coverage: North_America
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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