20.500.12556/RUL-175456 Changes in the content of extractives in silver fir (Abies alba Mill.) bark due to different storage conditions The circular economy promotes the use of industrial by-products as raw materials for high-quality products. Silver fir bark (Abies alba Mill.), a low-value residue from wood processing, is a rich source of polyphenols with antioxidant properties. This study investigated how bark preparation (particle size) and storage conditions affect the content of total extractives, polyphenols, and condensed tannins in aqueous extracts over a 10-month period. Bark samples of two particle sizes were stored either outdoors (exposed to precipitation) or indoors (dry, dark conditions). The extracts were analyzed monthly by gravimetry and UV-Vis spectrophotometry. The results showed that both particle size and storage conditions significantly influenced the retention of extractives and polyphenols in the samples. The highest losses occurred in ground bark samples stored outdoors, while the best retention was achieved with larger bark particles stored in a covered, dry environment. These findings highlight the importance of optimized storage strategies for the preservation of bark quality as a source of bioactive compounds. silver fir Abies alba Mill. tree biomass extraction polyphenols storage conditions particle size chemical monitoring bela jelka Abies alba Mill. drevesna biomasa ekstrakcija polifenoli pogoji skladiščenja velikost delcev monitoring kemijske sestave true false true Angleški jezik Slovenski jezik Članek v reviji 2025-10-28 10:36:01 2025-10-28 10:36:05 2026-06-10 09:13:10 0000-00-00 00:00:00 2025 0 0 12 str. iss. 6, art. 186 Vol. 83 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*8 1436-736X 10.1007/s00107-025-02338-5 254930179 RAZ_Hrovatic_Peter_2025.pdf RAZ_Hrovatic_Peter_2025.pdf 1 1264360ADEA35D09CA5EA6EE0BEC5080 f81889f5db1b20ae94a869adb762e715c98f9d5ff639a710895c40d4c0b8b41a 9b0063a6-b3e6-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=221014 https://link.springer.com/article/10.1007/s00107-025-02338-5 1 3ba3dc94-b3e1-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=221011 Biotehniška fakulteta 0 0 0