Formulation Optimization and Characterization of Spray-Dried Medium Chain Triglycerides-Rich Oil

2021 ◽  
Vol 901 ◽  
pp. 73-78
Author(s):  
Worawut Kriangkrai ◽  
Pitchayut Sararuk ◽  
Thanawat Tothong ◽  
Nattakanwadee Khumpirapang ◽  
Sakchai Wittaya-Areekul

Medium chain triglycerides (MCT) are important substrates of the energy metabolism and anabolic processes in mammals. In this study, MCT-rich oil was encapsulated in the mixing ratios of maltodextrin and protein by spray drying to produce spray-dried MCT-rich oil (SMCT). Spray-dried conditions were an inlet temperature of 200 °C, an outlet temperature of 90 °C, and a flow rate of 0.70 L/h. Box–Behnken experimental design and response surface methodology were applied for modeling the influence of formulation variables on powder recovery of SMCT. The key variables were concentration of maltodextrin (10-30% W/W), total protein (5–15% w/w), and MCT-rich oil (5–15% w/w). The microparticles were characterized in terms of particle morphology, yield, Carr's index, moisture content, flowability, hygroscopicity, and powder diffraction. The highest yield of SMCT was 41.19% obtained under the optimized conditions (maltodextrin concentration of 15% w/w, total protein concentration of 8% w/w, MCT-rich oil concentration of 15%). Experimentally obtained values were consistent with those predicted by the model, indicating the suitability of the employed model and the success of the model in optimizing the formulation.

Author(s):  
A. Stunda-Zujeva ◽  
V. Stepanova ◽  
L. Bērziņa-Cimdiņa

<p class="R-AbstractKeywords"><span lang="X-NONE">Spray drying is an effective and common method for powder drying, e.g. clay. The morphology and properties of spray dried granules depend on properties of slurry and operational conditions of spray dryer. The aim of this study was to investigate the effect of spray dryer settings on the morphology of illite clay granules. </span></p><p class="R-AbstractKeywords"><span lang="X-NONE">Laboratory scale spray dryer was used. Operational conditions: inlet temperature 190-220˚C, outlet temperature 70-96˚C, spray dispersion is obtained using two-fluid nozzle where the slurry feed was varied from 4.5 to 15 ml/min and gas pressure 15-40 mm. Slurry was prepared from clay fraction under 2 µm without additives. Latvian illite clay from Iecava, Pavāri and Laža deposits was studied. Slurries with concentration 1, 8 and 15 mass% was used.The size and morphology was investigated by scanning electron microscopy, surface area and porosity by liquid nitrogen sorption.</span></p><p class="R-AbstractKeywords"><span lang="X-NONE">All obtained granules irrespective of </span><span lang="X-NONE">spray dryer settings</span><span lang="X-NONE"> were well-rounded and dense without large pores or holes, however the surface was rough. The mean diameter of granules was in range of 2.6-5.4 µm, depending on slurry feed rate. The surface area of produced granules mostly depended on clay composition and was in a range of 70-92 m2/g. Inlet temperature in a range of 190-220 °C was found to be appropriate to produce well dried clay granules (moisture content &lt;10 wt%).   </span></p>


2018 ◽  
Vol 38 (8) ◽  
pp. 775-783 ◽  
Author(s):  
Israr Ahmed ◽  
Muhammad Bilal Khan Niazi ◽  
Zaib Jahan ◽  
Salman Raza Naqvi

Abstract This study focuses on the thermal, morphological and physical properties of spray-dried chicory root inulin using a thermogravimetric analyzer, environmental scanning electron microscopy, X-ray diffractogram and modulated differential scanning calorimetry. Different spray-drying conditions were investigated by varying inlet temperature, outlet temperature and aspirator speed. The starting material was semicrystalline. A feed temperature of 95°C was employed, which produced a completely transparent solution for spray drying. At that particular temperature, the powder samples obtained were entirely amorphous and morphology resembled each other except for higher solid content. The low glass transition temperature (Tg) (106.83°C) was evident by treating low-molecular-weight samples, whereas high-molecular-weight samples exhibited high Tg (125.81°C). The semicrystalline samples due to the high concentration and milky dispersion exhibited high decomposition temperature. The feed temperature, molecular weight and concentration of the samples tend to have a significant effect on the properties of spray-dried inulin.


LWT ◽  
2021 ◽  
Vol 143 ◽  
pp. 111091 ◽  
Author(s):  
Marija Perusko ◽  
Sami Ghnimi ◽  
Ana Simovic ◽  
Nikola Stevanovic ◽  
Mirjana Radomirovic ◽  
...  

Biomolecules ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 153 ◽  
Author(s):  
Emilia Drozłowska ◽  
Łukasz Łopusiewicz ◽  
Monika Mężyńska ◽  
Artur Bartkowiak

Flaxseed oil cake extract (residual from cold-press oil production and rich in proteins and polysaccharides) was evaluated as a potential substrate for the preparation of spray-dried powders with emulsifying activity. Three variants of powders were obtained using different spray-drying process inlet temperatures: 160 °C, 180 °C, and 200 °C. The influence of temperature on physicochemical features (water holding capacity, oil binding capacity, water activity, solubility, color, chemical composition, antioxidant activity, and surface morphology) of the powders was estimated. Additionally, the emulsifying activity of the powders and the stability of oil-in-water emulsions prepared with their various content (0.5%, 1%, and 3%) were determined. Results showed that inlet temperature had significant influence on all physicochemical and functional properties of the powders. Increased inlet temperature decreased solubility and antioxidant activity but increased water-holding capacity, oil-binding capacity, and emulsifying activity. The emulsions prepared with the powder obtained at 200 °C showed the highest stability. SEM images showed the production of relatively spherical particles which were folded or wrinkled with a lot of dentures. This study could open a promising pathway for producing natural and plant-based spray-dried powders for food applications as emulsion stabilizers.


1985 ◽  
Vol 35 (3) ◽  
pp. 371-375 ◽  
Author(s):  
Marnie L. MacDonald ◽  
Quinton R. Rogers ◽  
James G. Morris

Lipids ◽  
1967 ◽  
Vol 2 (4) ◽  
pp. 287-294 ◽  
Author(s):  
Gilbert A. Leveille ◽  
Ronald S. Pardini ◽  
Jerry Ann Tillotson

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