om as , F e r na n d o G on zález Candelas, SeqCOVID-SPAIN consortium, Tanja Stadler & Richard A. NeherThis is a PDF file of a peer-reviewed paper that has been accepted for publication. Although unedited, the content has been subjected to preliminary formatting. Nature is providing this early version of the typeset paper as a service to our authors and readers. The text and figures will undergo copyediting and a proof review before the paper is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers apply.
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One of the most important risks to be controlled in tissue banking is the infection associated with the clinical use of auto- and allografts. Thus, tissue disinfection protocols are used, in addition to processing in controlled environments. For this purpose, combinations of antibiotics are designed to ensure a broad spectrum of antimicrobial activity. This type of protocol is usually validated by testing its antimicrobial efficacy. In this work, we have studied the effect of several factors on the potential of an antibiotic mixture: container, freezing, storage at 4 °C, storage at - 30 °C and storage at - 80 °C. The molecular stability of the compounds has also been tested, additionally to their efficacy. Our findings show that storage conditions affect the molecular stability of Fungizone and Tobramycin (only in case of frozen storage for the last one). Nevertheless, the solution retains its antimicrobial activity for several weeks. The availability of stored aliquots of disinfectant solution and defining expiry dates for different storage conditions can help to schedule tissue bank tasks.
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