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Vacuum drying of CBD hemp to improve product quality and utilization

Author
Rodrigues, Catarina
Additional Titles
Vacuum drying of cannabidiol hemp to improve product quality and utilization
Published
[University Park, Pennsylvania] : Pennsylvania State University, 2024.
Physical Description
1 electronic document
Additional Creators
Harte, Fede and Schreyer Honors College
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Open Access.
Summary
The hemp industry currently utilizes oven-drying to preserve and extract CBD and terpenes. Although considered an industry standard, oven-drying destroys these valuable compounds and reduces hemp's quality and ability to deliver on key characteristic properties. Vacuum drying, a comparatively milder drying treatment, was evaluated on its ability to preserve CBD and beta-caryophyllene. Qualitative sensory attributes (color, textures, aromas) and drying efficiency were also assessed. Vacuum drying yielded higher drying rates than oven drying, with the 40°C treatment producing the highest average drying rate and drying efficiency at 0.0501 grams per minute. The vacuum drying treatment, specifically at 60°C, retained sensory qualities similar to fresh hemp most successfully. GC-MS analysis determined that oven treatments at 60°C and 40°C retained higher concentrations of beta-caryophyllene than the vacuum-drying treatments. Additionally, the hemp samples exposed to the 60°C treatments in both oven and vacuum drying displayed higher beta-caryophyllene retainment than those at 40°C. Due to the limited time frame of this study and the novel nature of the subject, methods for analyzing CBD and terpene content in hemp were not fully developed. Therefore, the results of this study may have produced an inaccurate representation of vacuum drying and its ability to retain valuable compounds in hemp.
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Dissertation Note
B.S. Pennsylvania State University 2024.
Technical Details
The full text of the dissertation is available as an Adobe Acrobat .pdf file ; Adobe Acrobat Reader required to view the file.
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