Optimization of spray drying process parameters for kefir powder using response surface methodology

Guacamole Powder: Standardization of the Spray Drying Process

“…No statistically significant differences (p>0.05) were observed between the values for guacamole powder moisture and the studied factors and interactions. Furthermore, its low values (0.88 -2.41%) were similar to those reported by Marulanda (28) with avocado powder, which might favor its preservation during storage since it has a w values between 0.077 and 0.250 (40) which are in turn considered appropriate and favor its stability against microbiological, hydrolytic, and enzymatic reactions as well as and lipid oxidation (19). a w showed significant differences (p<0.05) caused by the linear effect of the ADS, i.e.…”

“…This tool defines the conditions for operation as well as the formula for preparing the liquid to be fed to the dryer in order to obtain a product with the desired characteristics (16)(17)(18). This is highly consistent with the current demands in terms of design, improvement and formulation of new products (19). Experimental optimization of spray drying processes using the RSM has been widely used for a number of products: Lulo (20), tamarind pulp (21), kefir (19), cheese (22), microencapsulation of probiotics in raspberry juice (23), guava (14), microencapsulation of jabuticaba (24), azufaifa (25).…”

“…Moreover, the particles of the guacamole powder obtained in this study were agglomerated; this explains their large sizes and could be associated with a rubbery amorphous state reached by the particles during the quick water evaporation phase inside the chamber. Marulanda (28) reported a similar situation with avocado powder obtained through spray drying with the same proportion of maltodextrin (dextrose equivalent [18][19][20] …”

Effectiveness of convective drying to conserve indigenous yeasts with high volatile profile isolated from algerian fermented raw bovine milk (Rayeb)

“…suaveolens and W. anomalus with moisture content of 3% ± 0.2 gave poor survival values, up to 20% and 29% respectively after spray drying. Although, authors reported that, the survival after spray drying depends on the types and concentrations of the encapsulating agent and the inlet air temperature (Atalar & Dervisoglu, 2015). In this work, processing conditions of spray-drying constant inlet were 80-90 °C.…”

“…However, they are relatively costly and require sophisticated equipment and adequate power supply (Santivarangkna et al, 2007). In addition, microorganisms undergo many stresses mainly related to freezing and dehydration during freeze-drying (Coulibaly et al, 2009) and high operating temperatures during spray drying (Atalar & Dervisoglu, 2015). The low cost convective air drying is an alternative method for microorganism preservation and appeared to be more efficient on cell viability (Nyanga et al, 2012).…”