20.500.12556/RUL-180290 Effects of industry-inspired storage conditions on the contents of hydrophilic extractives and polyphenols in Silver fir (Abies alba Mill.) bark Silver fir bark (Abies alba Mill.) is an underutilized renewable resource containing valuable extractives and polyphenols of industrial importance. This study compared the influence of two storage methods on the extraction of total hydrophilic extractives content (TEC) and total polyphenols content (TPC) from silver fir bark samples. Bark samples were collected from two storage types: bark left on stem sections and stored under cover (B-D), and mechanically removed industrial bark stored outdoors (B-IS), over a 12-month period with monthly sampling and extraction, followed by measurements of TEC and TPC using gravimetric and spectrophotometric methods. B-D samples showed no statistically significant decrease in TEC or TPC during one year of storage, while B-IS samples exhibited substantial losses, with TEC decreasing by more than half (50.82%) and TPC by 65.68%, most rapidly within the first 3 months when precipitation-driven leaching and degradation processes were obviously most pronounced. These results demonstrate that bark removed before storage is much more susceptible to degradation and leaching of the hydrophilic extractives than bark retained on logs, confirming that mechanical disintegration and exposure to weathering accelerate the loss of valuable extractives and polyphenols. A strong TEC–TPC correlation (r = 0.67–0.81, p < 0.0001) provides a practical methodological approach for rapid biomass quality screening. Overall, the findings offer quantitative guidance for optimizing debarking timing and storage practices to preserve extractive yield and enhance the efficiency of bark-based biorefinery processes. silver fir bark Abies alba Mill. extractives polyphenols biomass storage chemical analysis circular bioeconomy bioactive compounds forest-based by-products skorja bele jelke ekstraktivi polifenoli skladiščenje biomase krožno gospodarstvo bioaktivne spojine true false true Angleški jezik Slovenski jezik Članek v reviji 2026-03-05 11:16:21 2026-03-05 11:16:27 2026-03-06 04:33:07 0000-00-00 00:00:00 2026 0 0 18 str. issue 2, [article no.] 280 Vol. 17 Feb. 2026 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 630*8 1999-4907 10.3390/f17020280 270550787 RAZ_Hrovatic_Peter_2026.zip RAZ_Hrovatic_Peter_2026.zip 1 CFAA85E8A8207240C1E3B7370E131029 3fdfd36a8f7c8d1781ebd4fff4dcc89ab0782085c8e6c4b0772b616b05d965ad 3cdfccca-187c-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=229497 https://www.mdpi.com/1999-4907/17/2/280?utm_source=researchgate.net&utm_medium=article 1 ffb9d9a3-187b-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=229495 Biotehniška fakulteta 0 0 0