The non-psychoactive cannabinoids cannabidiol (CBD) and cannabidiolic acid (CBDA) are available on the market in different forms, mostly for their anti-inflammatory and potential analgesic properties. These substances are prohibited during equine competitions. CBD and CBDA are naturally present in hemp straw, commonly used as a bedding substitute for wheat straw. Unfortunately, horses can eat it, which therefore could lead to a possible risk of positive findings for CBD/CBDA in biological samples after doping control tests. The goals of this study were, first, to provide recommendations on the use of hemp straw before competition and, second, to assess if discrimination between hemp bedding exposure and CBD oil administration is possible. Several CBD equine in vivo studies have been conducted, including one on hemp straw used as bedding and one after administration of CBD oil by topical and sublingual routes. In hemp straw, CBDA was detected in higher quantities than CBD, and other cannabinoids have been observed. After hemp straw exposure, CBDA was also detected in higher quantities than CBD in all urine samples. It appeared that hemp straw should not be used as bedding for equine competition except if a delay of at least 48 h is respected. Regarding the CBD oil product analysis, CBD was the main compound detected. After administration, 7-hydroxy CBD was identified in the urine. In conclusion, based on these data, we highlighted that it could be possible to discriminate the exposure of a horse to hemp straw from an administration of a CBD oil product thanks to the main presence of CBDA.
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http://dx.doi.org/10.1002/dta.3783 | DOI Listing |
Microorganisms
November 2024
All-Russian Research Institute for Agricultural Microbiology (ARRIAM), 3 Podbelsky Chaussee, 196608 Saint Petersburg, Russia.
For the targeted selection of microbial communities that provide cellulose degradation, soil samples containing cellulolytic microorganisms and specific plant residues as a substrate can be used. The details of this process have not been studied: in particular, whether the use of different soils determines the varying efficiency of communities; whether these established cellulolytic communities will have substrate specificity, and other factors. To answer these questions, four soil microbial communities with different cellulolytic activity (Podzol and the soil of Chernevaya taiga) and substrates (oat straw and hemp shives) with different levels of cellulose availability were used, followed by trained communities that were tested on botrooth substrates (in all possible combinations).
View Article and Find Full Text PDFCarbohydr Polym
January 2025
Food Safety and Preservation Department, Institute of Agrochemistry and Food Technology (IATA), CSIC, Valencia, Spain; Interdisciplinary Platform for Sustainable Plastics Towards a Circular Economy- Spanish National Research Council (SusPlast-CSIC), Madrid, Spain. Electronic address:
This study presents a circular economy approach utilizing hemp stems and rice straw, typically perceived as low-value agricultural waste, to develop a sustainable alternative to traditional plastic absorbent pads for food packaging. The development of an active material was achieved through the utilization of hemp cellulose and a bioactive extract isolated from rice straw. In addition to reducing plastic pollution, this material demonstrates the potential to enhance food preservation.
View Article and Find Full Text PDFPolymers (Basel)
September 2024
Manufacturing Science Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, TN 37830, USA.
Lignin-containing cellulose nanofibrils (LCNFs) are mainly produced commercially from treated wood pulp, which can decrease some of the carbon-negative benefits of utilizing biomass feedstock. In this work, LCNFs are prepared from non-wood feedstocks, including agricultural residues such as hemp, wheat straw, and flax. These feedstocks allowed for the preparation of LCNFs with a variety of properties, including tailored hydrophobicity.
View Article and Find Full Text PDFSci Total Environ
December 2024
College of Mechanical Engineering, Guangxi University, University Road 100, Xixiangtang District, Nanning City 530004, China.
Assessing the overall impact of biomass on water resources can provide guidance for biomass fuel production and water resource protection. The life-cycle water footprint (WF) of five typical crops (hemp, corn, soybean, sugarcane and cassava) in Bama, converted to bio-ethanol was analyzed using CROPWAT 8.0 model, combined with environmental and economic assessment.
View Article and Find Full Text PDFDrug Test Anal
August 2024
GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France.
The non-psychoactive cannabinoids cannabidiol (CBD) and cannabidiolic acid (CBDA) are available on the market in different forms, mostly for their anti-inflammatory and potential analgesic properties. These substances are prohibited during equine competitions. CBD and CBDA are naturally present in hemp straw, commonly used as a bedding substitute for wheat straw.
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