ArticleJournal of cannabis research2025
Effect of screw pressing temperature on yield, bioactive compounds, and quality of hemp (Cannabis sativa L.) seed oil.
Article in Journal of cannabis research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Physicochemical Characterization, Fatty Acid Profile, and In Vitro Antioxidant Capacity of Tumbo (Foods (Basel, Switzerland) · 2026Article
- Lecithin Characteristics from Niche Oils.Molecules (Basel, Switzerland) · 2026Review
- Effects of Screw-Press Temperatures on Oil Yield and Phytoconstituents of Roasted and Unroasted Black and White Sesame Cultivars.Molecules (Basel, Switzerland) · 2026Article
- Analysis of Quality Distinctions of Pumpkin Seed Oil (Molecules (Basel, Switzerland) · 2026Article
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8 authors.
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Abstract
backgroundScrew press extraction is widely used due to its simplicity and efficiency, but the impact of extraction temperature on oil characteristics requires further study. Existing studies highlight that high temperatures can improve yield but compromise oil quality. This study aims to assess the effects of different screw press extraction temperatures on hemp oil yield, composition and quality.
methodsThe study was conducted to examine the influence of screw press extraction temperatures (30, 60, 80, 100, 120 and 140 °C) on hemp oil yield and quality. Extracted oils were analyzed according to key parameters, including oil yield, total phenolic content, tocopherols, oxidation stability index (OSI), pigments, quality indices (free fatty acids (FFA), peroxide value (PV), conjugated diene (K232) and conjugated triene (K270)), fatty acid profiles and color parameters (L*, a*, b*, C*
resultsThe temperature played a key role in yield, reaching a maximum of 21.82%, representing an oil recovery of 66.68% at 100 °C, an improvement of approximately 4% over cold pressing (30 °C). Increasing the extraction temperature from 30 °C to 140 °C resulted in an increase in tocopherol content from 410.84 mg/kg to 512.98 mg/kg. On the other hand, temperature had no significant effect on the TPC, which varied from 31.76 mg GAE/kg to 41.89 mg GAE/kg as confirmed by HPLC-DAD/ESI-MS² analysis. On the other hand, oils extracted at higher temperatures were lower in quality, with higher PV, ranging from 6.36 meq O
conclusionExtraction temperature has a significant influence on the yield and quality of hemp oil. Underline the importance of selecting the optimum extraction temperature to balance yield and quality.
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