{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T18:42:21Z","timestamp":1785436941243,"version":"3.56.0"},"reference-count":54,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2026,6,14]],"date-time":"2026-06-14T00:00:00Z","timestamp":1781395200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100008921","name":"Ministry of Agriculture of the Czech Republic","doi-asserted-by":"publisher","award":["MZE-RO-0723"],"award-info":[{"award-number":["MZE-RO-0723"]}],"id":[{"id":"10.13039\/100008921","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100008921","name":"Ministry of Agriculture of the Czech Republic","doi-asserted-by":"publisher","award":["MZE-RO-1023"],"award-info":[{"award-number":["MZE-RO-1023"]}],"id":[{"id":"10.13039\/100008921","id-type":"DOI","asserted-by":"publisher"}]},{"award":["MZE-RO-0723"],"award-info":[{"award-number":["MZE-RO-0723"]}],"id":[{"id":"https:\/\/ror.org\/049wftm75","id-type":"ROR","asserted-by":"publisher"}]},{"award":["MZE-RO-1023"],"award-info":[{"award-number":["MZE-RO-1023"]}],"id":[{"id":"https:\/\/ror.org\/049wftm75","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Foods"],"abstract":"<jats:p>Hemp and linseed are nutritionally valuable commodities that exhibit considerable varietal differences in composition. Nutrient composition was evaluated in 12 hemp and 11 linseed varieties, including commercially cultivated varieties from the EU Common Catalogue and newly bred lines, to assess varietal variability. Field experiments were conducted under uniform agronomic conditions in the Czech Republic during a single growing season using field-block samples. Analyses included proximate composition (dry matter, crude protein, fat, fiber, ash), fatty acid and amino acid profiles, carotenoids, vitamins, and cannabinoid content. Statistical evaluation was performed using a General Linear Model with Duncan\u2019s multiple range test (p &lt; 0.05). Significant differences were observed across most parameters, indicating substantial inter-varietal variability under the experimental conditions. Fat content ranged from approximately 200 to 377 g\/kg in both oilseeds, with lipids dominated by polyunsaturated fatty acids, particularly linoleic (n-6) and \u03b1-linolenic (n-3) acids. Hemp and linseed show potential as alternative plant protein sources in animal nutrition, but further digestibility and feeding studies are needed to confirm their suitability as partial soybean meal substitutes. Varietal selection may contribute to improved nutritional quality while influencing levels of undesirable constituents such as \u03949-THC in hemp.<\/jats:p>","DOI":"10.3390\/foods15122145","type":"journal-article","created":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T03:01:27Z","timestamp":1781492487000},"page":"2145","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Comparative Analysis of the Chemical Composition of Hemp and Linseed Varieties as Key Industrial Commodities"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1175-8867","authenticated-orcid":false,"given":"Tom\u00e1\u0161","family":"Taubner","sequence":"first","affiliation":[{"name":"Department of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, P\u0159\u00e1telstv\u00ed 815, 104 00 Prague-Uh\u0159\u00edn\u011bves, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michaela","family":"Englmaierov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, P\u0159\u00e1telstv\u00ed 815, 104 00 Prague-Uh\u0159\u00edn\u011bves, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0742-539X","authenticated-orcid":false,"given":"Marie","family":"Bjelkov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Legumes and Technical Crops, Agritec Plant Research Ltd., Zem\u011bd\u011blsk\u00e1 2520\/16, 787 01 \u0160umperk, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V\u011bra","family":"Sk\u0159ivanov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, P\u0159\u00e1telstv\u00ed 815, 104 00 Prague-Uh\u0159\u00edn\u011bves, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kl\u00e1ra","family":"Bej\u010dkov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, P\u0159\u00e1telstv\u00ed 815, 104 00 Prague-Uh\u0159\u00edn\u011bves, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tom\u00e1\u0161","family":"V\u00edt","sequence":"additional","affiliation":[{"name":"Department of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, P\u0159\u00e1telstv\u00ed 815, 104 00 Prague-Uh\u0159\u00edn\u011bves, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kate\u0159ina","family":"R\u016fnov\u00e1","sequence":"additional","affiliation":[{"name":"Department of Nutrition Physiology and Animal Product Quality, Institute of Animal Science, P\u0159\u00e1telstv\u00ed 815, 104 00 Prague-Uh\u0159\u00edn\u011bves, Czech Republic"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,6,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Farinon, B., Molinari, R., Constantini, L., and Merendino, N. 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