The effect of pre-treatments on the colour of freeze-dried strawberries was studied. Strawberries were subjected to different ultrasound and osmotic dehydration conditions followed by freeze-drying. Two concentration levels of sucrose solution (25 and 50 % w/w) and four levels of processing time (from 10 min to 45 min) were studied. Also, ultrasound application without using an osmotic solution...

INTRODUCTION Nanoparticulate carrier system was used to target, improve bioavailability, control the drug release and avoid the enzymatic degradation. Among the nanoparticulates i.e. SLNs are attractive and face the challenges of stability. The major obstacle with the SLNs was agglomeration in order to avoid this problem freeze drying was attempted. In this laboratory process which involves fre...

The effects of freeze-drying on antioxidant compounds and antioxidant activity of five tropical fruits, namely starfruit (Averrhoa carambola L.), mango (Mangifera indica L.), papaya (Carica papaya L.), muskmelon (Cucumis melo L.), and watermelon Citruluss lanatus (Thunb.) were investigated. Significant (p < 0.05) differences, for the amounts of total phenolic compounds (TPC), were found between...

BACKGROUND Mild solubilization of inclusion bodies has attracted attention in recent days, with an objective to preserve the existing native-like secondary structure of proteins, reduce protein aggregation during refolding and recovering high amount of bioactive proteins from inclusion bodies. RESULTS Here we presented an efficient method for mild solubilization of inclusion bodies by using a...

The suspension freeze crystallization of aqueous 1-butanol solutions, synthetic acetone-butanol-ethanol (ABE) and ABE fermentation broth was studied as a novel concentration method that requires less energy than evaporation for water removal. equimolar solutions in total molality range 0–5.05 mol/kg(water) were proven to be ideal based on the freezing point depression obtained. An solution 8 wt...