The parenchyma cellulose isolated from bagasse pith was used as an alternative resource for preparation of water-soluble cellouronic acid sodium salt (CAS). The influence of ultrasound treatment on the cellulose was investigated for obtaining CAS by regioselective oxidization using 4-acetamide-TEMPO and NaClO with NaClO2 as a primary oxidant in an aqueous buffer at pH 6.0. The yield, carboxylate content and polymerization degree (DP) of CAS were measured as a function of ultrasonic power, agitating time and cellulose consistency by an orthogonal test. The ultrasound-treated conditions were further improved by discussion of ultrasonic power, the most important factor influencing the yield and DP. An optimized CAS yield of 72.9% with DP value (DPv) of 212 was found when the ultrasonic strength is 550 W, agitating time is 3 h and cellulose consistency is 2.0%. The oxidation reactivity of cellulose was improved by ultrasonic irradiation, whereas no significant changes in crystallinity of cellulose were measured after ultrasonic treatment. Moreover, the ultrasound treatment has a greater effect on yielding CAS from parenchyma cellulose than from bagasse fibrous' one. The CAS was further characterized by Fourier transform infrared spectroscopy (FT-IR) and Scanning electron microscopy (SEM).

The Krónik Library preserves a seal stamp made of green jasper, with the curved coat of arms of Ogończyk under a count’s crown and a cross of the St. Stanislas Order. The golden handle was shaped as the bust of a black boy wearing a turban. This element was also encrusted with previous stones (turquoise, almandine and opal). Most likely this figural presentation of the seal was produced in Dresden. The goldsmith may have been inspired by a catalogue of jewellry designs, drawn according to the projects of Friedrich Jacob Morisson of Vienna, published in Augsburg in 1693. It is very likely that the bust was purchased in Dresden by Augustyn Działyński (1715-1759), governor of Kalisz, when the seal itself was ordered – most likely in 1786 by his son Ksawery Działyński (1756-1819). The latter was received in 1786 by the Order of Saint Stanisław and in 1786 by the rank of the count. The handle of the seal stamp can be considered as an example of European influence on Polish cultural peripheries, in particular the fashion of the esoteric, as well as on Polish nobility, which often claimed in the seventeenth and eighteenth centuries that the gentry was directly linked with the ancient Sarmatians.