Freeze-drying is a commonly used drying technique for sensitive biologicals, such as lactic acid bacteria (LAB). However, The choice of an appropriate medium important, so to increase the survival rates during dehydration itself and subsequent storage. aim present study was evaluate protective effect different agents (skim milk, yeast extract, sucrose, trehalose glucose) on five potential probi...

This paper emphasized the significance of the glass transition temperature (Tg) by highliting its applications in drying (hot air and freeze drying) for various food systems such as skim milk powders, rice kernels, starch and sugar products and some freeze-dried products such as strawberries and surimi. The study revealed that the major components of the specified foods (which consist of mixtur...

OBJECTIVE Platelet-rich plasma is blood plasma enriched with platelets and contains various growth factors. Two major issues remain to be resolved in the use of platelet-rich plasma: the short biological activity after application, and the need to prepare platelet-rich plasma at each application instance. To overcome these problems, we developed a drug delivery system using gelatin hydrogel and...

PLGA nanoparticles are useful to protect and deliver proteins in a localized or targeted manner, with a long-term systemic delivery pattern intended to last for a period of time, depending on polymer bioerosion and biodegradability. However, the principal concern regarding these carriers is the hydrolytic instability of polymer in aqueous suspension. Freeze-drying is a commonly used method to s...

The relative drying rate of samples (RDR), which is the ratio of the drying rate of pretreated samples to that of untreated ones, might be used as a tool to investigate the damage to cells of agroproducts induced by high-pressure treatment. Damage to cells induced by high pressure was estimated by comparing the RDR after high-pressure pretreatment with the RDR after chloroform-vapor, heat, and ...

We investigated the effect of multiple freeze-thaw cycles on mumps, measles, and rubella virus serum antibody levels with whole-virus immunoglobulin G enzyme-linked immunoassays. Fresh serum samples from nine healthy adult volunteers were divided into six sets of five aliquots each. Samples were taken through a total of 10 freeze-thaw cycles and stored at 4 degrees C until assayed. Each assay m...