Lyophilisation of truffles

Lyophilisation of fresh banana slices

Freeze drying is a gentle form of drying and may be used to preserve foods without changing their appearance or taste. The freeze drying process includes the freezing of the food sample and subsequent applying a fine vacuum to the frozen sample. Under these conditions, the water in the food will sublimate, hence, the sample dries. In food applications, freeze drying is commonly used to make instant coffee and to dry and conserve fruits, vegetables or herbs.

Freeze drying of beads containing yeasts

The cell viabilities of microorganisms during storage are of economic importance for probiotic dietary food and feed supplements. By combining granulation and freeze drying, dust free particles homogeneous in size and composition can be obtained. This will enable a good particle flowability, an easier dosage and a faster reconstitution of the product can be obtained. Encapsulator as a granulator to prill the yeasts suspension into liquid nitrogen and form monodispersed beads that will then be freeze dried.

Automatic freeze drying endpoint determination for vials application

Automatic freeze drying endpoint determination for vials application on Lyovapor™ L-300 Pro by pressure difference test, pressure rise test and temperature difference test

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Ratgeber der Gefriertrocknung, Teil 1: Gundlagen & Anwendungsbereiche

Diese Anleitung vermittelt Grundkenntnisse und Applikationen für die Gefriertrocknung.

Ratgeber der Gefriertrocknung, Teil 2: Illustriertes Toolkit für allgemeine Anwendungen

Die Anleitung vermittelt Ihnen Kenntnisse über die Hardware, das Verfahren der Gefriertrocknung und eine Zusammenfassung der wichtigsten Parameter und Schritte der Probenvorbereitung.

Lyophilisation of mannitol and NaCl solutions in serum vials

In this Application Note sodium chloride (NaCl) and mannitol are used for freeze drying experiments. The unambiguous crystal structure of NaCl renders this salt a model compound. In contrast, mannitol is well known to crystallize in different polymorphs and it may form hydrates. Nevertheless, mannitol is the most used bulking agent for freeze dried pharmaceutical formulations. The benefits of using mannitol are that it crystallizes during freezing, creates a beautiful cake and permits drying processes at higher product temperatures, thus with higher sublimation rates compared to purely amorphous systems.

Polycyclic aromatic hydrocarbons in sludge samples

SpeedExtractor E-916, Syncore Analyst: Pressurized Solvent Extraction of a sludge sample for the determination of polycyclic aromatic hydrocarbons (PAHs)

The use of organic solvents in laboratory freeze-dryer

Freeze-dryers were initially intended to be used with water as a solvent. With new applications, freeze-drying is consequently being used more and more in combination with organic solvents instead of water. Organic solvents and inorganic acids and bases are often used in research and development prior to lyophilisation of the sample. The behavior of these new types of samples during freeze-drying must therefore be considered prior to the process.

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