Effects of spray drying conditions and the addition of surfactants on the foaming properties of a whey protein concentrate

LWT ◽  
2014 ◽  
Vol 58 (1) ◽  
pp. 109-115 ◽  
Author(s):  
J. Osorio ◽  
J. Monjes ◽  
M. Pinto ◽  
C. Ramírez ◽  
R. Simpson ◽  
...  
2020 ◽  
Vol 14 (4) ◽  
pp. 2407-2416
Author(s):  
Nguyen Phuoc Minh

Roselle (Hibiscus sabdariffa) was a member of Malvaceae family. Its calyxes had bright red color due to presence of anthocyanin with an excellent antioxidant property. Raw roselle (Hibiscus sabdariffa L.) calyx was highly perishable due to its high moisture content. In order to diversify products from this plant, this research evaluated the possibility of spray drying for roselle extract into dried powder for long-term consumption. We focused on the effect of sugar alcohols (mannitol, sorbitol, isomalt, xylitol, erythritol) at 8%, carrier agents (maltodextrin, gum arabic, glutinous starch, whey protein concentrate, carboxymethyl cellulose) at 12%, operating parameters of spray dryer (inlet/outlet air temperature, feed rate) on physicochemical quality (bulk density, solubility, total phenolic content, total flavonoid content, anthocyanin content) of rosselle powder. Results showed that the optimal spray drying variables for rosselle powder should be 8% isomalt, 12% whey protein concentrate, inlet/ outlet air temperature 140/85oC/oC, feed rate 12 ml/min. Based on these optimal conditions, the highest physicochemical attributes of the dried roselle calyx powder would be obtained.


2021 ◽  
Vol 345 ◽  
pp. 128772
Author(s):  
Jaqueline Vieira Piovezana Gomes ◽  
Lívya Alves de Oliveira ◽  
Stephanie Michelin Santana Pereira ◽  
Aline Rosignoli da Conceição ◽  
Pamella Cristine Anunciação ◽  
...  

2021 ◽  
pp. 108201322110206
Author(s):  
Jacqueline Agudelo-Chaparro ◽  
Héctor J Ciro-Velásquez ◽  
José U Sepúlveda-Valencia ◽  
Ezequiel José Pérez-Monterroza

This study aimed to microencapsulate Lactobacillus rhamnosus ( L. rhamnosus) ATCC 7469 with whey protein concentrate (WPC), maltodextrin and trehalose by spray drying and to assess the impact of microencapsulation on cell viability and the properties of the dried powders. Spray-drying conditions, including inlet air temperature, air flow rate and feed pump, were fixed as independent variables, while probiotic survival, moisture content, water activity and effective yield were established as dependent variables. The survival of encapsulated L. rhamnosus by spray drying was optimized with response surface methodology, and the stability of the powder was assessed. The optimum spray-drying conditions were an inlet air temperature, air flow rate and feed pump rate of 169 °C, 33 m3·h−1 and 16 mL·min−1, respectively, survival of 70%, air aspiration of 84% and outlet air temperature of 52 °C, achieving an overall desirability of 0.96. The physicochemical and structural characteristics of the produced powder were acceptable for application with regard to residual water content, hygroscopicity, water activity, and particle size. The results indicated that a protein-trehalose-maltodextrin mixture is a good wall material to encapsulate L. rhamnosus, showing important thermal protection during the drying process and increasing survival. However, a decrease in this capacity is observed at an air outlet temperature of approximately 101 °C. The possible effects of the wall materials and the drying conditions on survival are also discussed.


2018 ◽  
Vol 55 (9) ◽  
pp. 3693-3702 ◽  
Author(s):  
Beatriz E. Oliveira ◽  
Paulo C.G. Junior ◽  
Lilian P. Cilli ◽  
Luana R. F. Contini ◽  
Anna C. Venturini ◽  
...  

2019 ◽  
Vol 57 (3) ◽  
pp. 331-340 ◽  
Author(s):  
Indrajeet Singh Banjare ◽  
Kamal Gandhi ◽  
Khushbu Sao ◽  
Rajan Sharma

Poor absorption of iron from food and oral iron formulations results in extensive use of high-dose oral iron, which is not tolerated. Disposal of whey, a byproduct of the cheese industry, causes environmental pollution. Whey proteins have the ability to bind significant amount of iron, thereby reducing its chemical reactivity and incompatibility with other components in foods. To make iron compatible with food, it was complexed with whey protein concentrate (WPC). After complexation, centrifugation and ultrafiltration techniques were utilised to eliminate the insoluble and free iron from the solution. To enable the availability of whey protein concentrate–iron (WPC–Fe) complex in the powder form, spray drying technique was used. Optimized spray drying conditions used for the preparation were: inlet temperature 180 °C, flow rate 2.66 mL/min and solution of total solids 15 %. The complex was observed to be stable under different processing conditions. The in vitro bioaccessibility (iron uptake) of the bound iron from the WPC–Fe complex was significantly higher (p<0.05) than that from iron(II) sulphate under simulated gastrointestinal conditions. WPC–Fe complex with improved iron bioaccessibility could safely substitute iron fortificants in different functional food preparations.


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