Foam-Mat Freeze Drying of Egg White and Mathematical Modeling Part I Optimization of Egg White Foam Stability

2008 ◽  
Vol 26 (4) ◽  
pp. 508-512 ◽  
Author(s):  
Arun Muthukumaran ◽  
Cristina Ratti ◽  
Vijaya G. S. Raghavan
Keyword(s):  
Mathematical Modeling ◽  
Freeze Drying ◽  
Foam Stability ◽  
Egg White ◽  
White Foam

scholarly journals Factors influencing egg white foam quality

2011 ◽  
Vol 29 (No. 4) ◽  
pp. 322-327 ◽  
Author(s):  
H. Bovšková ◽  
K. Míková
Keyword(s):  
Foam Stability ◽  
Volume Density ◽  
Egg White ◽  
Foam Volume ◽  
Neutral Ph ◽  
Factors Influencing ◽  
Foam Forming ◽  
Influence Of Ph ◽  
Positive Effect ◽  
White Foam

The work was targeted on the study of egg white foam forming, including the influence of pH, aluminium ions, xanthan, maltodextrin, and phosphates on the whipping and stability of egg white foams. The whipping was studied with non pasteurised and pasteurised egg white using the blender with planet motion. Both types of egg white formed good foam in the acid area (pH below 4.5) and at neutral pH. Aluminium ions had a positive effect on the foam volume and stability, especially with the non pasteurised egg white. The addition of maltodextrin or saccharose decreased the foam volume but increased the foam stability. The addition of natrium pyrophosphate or natrium hexametaphosphate had a positive effect on the volume, density, and stability of foam. Foams with hexametaphosphate were applied into confectionary products.

Foam-Mat Freeze Drying of Egg White—Mathematical Modeling Part II: Freeze Drying and Modeling

2008 ◽  
Vol 26 (4) ◽  
pp. 513-518 ◽  
Author(s):  
Arun Muthukumaran ◽  
Cristina Ratti ◽  
Vijaya G. S. Raghavan
Keyword(s):  
Mathematical Modeling ◽  
Freeze Drying ◽  
Egg White

scholarly journals Properties of Egg White Foam Drainage

1976 ◽  
Vol 55 (2) ◽  
pp. 738-743 ◽  
Author(s):  
F.E. Cunningham
Keyword(s):  
Egg White ◽  
White Foam ◽  
Foam Drainage

scholarly journals Freeze-drying microscopy in mathematical modeling of a biomaterial freeze-drying

2012 ◽  
Vol 48 (2) ◽  
pp. 203-209 ◽  
Author(s):  
Camila Figueiredo Borgognoni ◽  
Joyce da Silva Bevilacqua ◽  
Ronaldo Nogueira de Moraes Pitombo
Keyword(s):  
Mathematical Modeling ◽  
Freeze Drying ◽  
Drying Process ◽  
Critical Temperatures ◽  
Fundamental Properties ◽  
Moving Interface ◽  
Energy Consuming ◽  
Sublimation Rates ◽  
Time And Energy

Transplantation brings hope for many patients. A multidisciplinary approach on this field aims at creating biologically functional tissues to be used as implants and prostheses. The freeze-drying process allows the fundamental properties of these materials to be preserved, making future manipulation and storage easier. Optimizing a freeze-drying cycle is of great importance since it aims at reducing process costs while increasing product quality of this time-and-energy-consuming process. Mathematical modeling comes as a tool to help a better understanding of the process variables behavior and consequently it helps optimization studies. Freeze-drying microscopy is a technique usually applied to determine critical temperatures of liquid formulations. It has been used in this work to determine the sublimation rates of a biological tissue freeze-drying. The sublimation rates were measured from the speed of the moving interface between the dried and the frozen layer under 21.33, 42.66 and 63.99 Pa. The studied variables were used in a theoretical model to simulate various temperature profiles of the freeze-drying process. Good agreement between the experimental and the simulated results was found.

scholarly journals Effect of Xanthan and Arabic Gums on Foaming Properties of Pumpkin (Cucurbita pepo) Seed Protein Isolate

2013 ◽  
Vol 3 (1) ◽  
pp. 87 ◽  
Author(s):  
Quirino Dawa ◽  
Yufei Hua ◽  
Moses Vernonxious Madalitso Chamba ◽  
Kingsley George Masamba ◽  
Caimeng Zhang
Keyword(s):  
Sodium Chloride ◽  
Salt Concentration ◽  
Seed Protein ◽  
Foam Stability ◽  
Chloride Concentration ◽  
Egg White ◽  
Protein Isolate ◽  
Foaming Properties ◽  
Ph Optimum ◽  
Pumpkin Seed

<p>Understanding how foaming properties of proteins are affected by factors such as pH, salt concentration and temperature is essential in predicting their performance and utilisation. In this study, the effects of pH and salt concentration were studied on the foaming properties of pumpkin seed protein isolate (PSPI) and PSPI- xanthan (XG)/Arabic (GA) gum blends. The foaming properties of the PSPI-GA/XG blends were also compared with egg white. Foam stability (FS) was significantly affected by pH with PSPI: GA (25:4) and PSPI: XG (25:1) having a significantly higher stability at pH 2 with the lowest foam stability at pH 4. Sodium chloride (0.2-1.0 M) did not significantly affect foaming properties although PSPI: GA (25:4) had the highest FC (89.33 ± 3.24%) and FS (76.83 ± 1.53 min) at 0.2 M sodium chloride concentration. The foaming capacity (FC) of PSPI: GA (25:4) blend (128.00 ± 0.91%) was significantly higher (<em>p </em><em>&lt; </em>0<em>.</em>05) than that of egg white (74.00 ± 1.33%) but its FS was significantly lower. It was further revealed that the FC of egg white (74.00 ± 1.33%) was comparable to the PSPI:XG (25:1) blend (74.00 ± 1.46%) but the FS for egg white (480.00 ± 2.67 min) was significantly higher (<em>p </em><em>&lt; </em>0<em>.</em>05) than the FS (116.21 ± 0.86 min) of PSPI:XG (25:1). The foaming properties of PSPI and PSPI-xanthan (XG)/Arabic (GA) blends were significantly affected by pH. Optimum foaming properties, PSPI:XG (25:1) and PSPI:GA (25:4) were observed at pH 2 and heat treatment temperature of 80 ºC.</p>

Recovery of Foam Stability of Yolk-contaminated Egg White by Immobilized Lipase

1980 ◽  
Vol 44 (2) ◽  
pp. 413-418
Author(s):  
Takeshi Kobayashi ◽  
Ikuko Kato ◽  
Kunio Ohmiya ◽  
Shoichi Shimizu
Keyword(s):  
Foam Stability ◽  
Immobilized Lipase ◽  
Egg White

Some Characteristics to the Related Food Processing for Garlic Fructan

2011 ◽  
Vol 197-198 ◽  
pp. 79-85 ◽  
Author(s):  
Xue Song Huang ◽  
Min Wang ◽  
Wei Bin Bai
Keyword(s):  
Essential Oil ◽  
Food Processing ◽  
Allium Sativum ◽  
Moisture Absorption ◽  
Foam Stability ◽  
Egg White ◽  
Oil Absorption ◽  
Food Engineering ◽  
Main Components ◽  
As Solubility

Garlic fructan (GF) is one of the main components of garlic (Allium sativum L.) and has been largely produced from the residue discharged from getting essential oil in China. Some GF characteristics of the related food engineering, such as solubility, oil absorbability, foam ability, moisture absorption and retention, thermal and acidic stability and the like were investigated. Results showed that GF was soluble in water, slight soluble in ethanol but insoluble in acetone, ethyl acetate or butanol. The precipitation increased as the concentration of alcohol rise. GF presented better oil absorption than casein, as well as higher capacities of moisture absorption and retention in humid and dry environment than glycerin, but lower frothing and foam stability than egg white. GF was not stable at the environment of high acid and temperature. These results provide foundation for the application of GF in liquor, fat substitute food, chemical medicine and other use.

scholarly journals Comparative Study on Foaming Properties of Egg White with Yolk Fractions and Their Hydrolysates

Foods ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 2238
Author(s):  
Xin Li ◽  
Yue-Meng Wang ◽  
Cheng-Feng Sun ◽  
Jian-Hao Lv ◽  
Yan-Jun Yang
Keyword(s):  
Foam Stability ◽  
Egg Yolk ◽  
Egg White ◽  
Foaming Properties ◽  
Foaming Agent ◽  
Yolk Granules ◽  
Industrial Processing ◽  
Egg White Protein ◽  
Egg Yolk Plasma ◽  
Yolk Plasma

As an excellent foaming agent, egg white protein (EWP) is always contaminated by egg yolk in the industrial processing, therefore, decreasing its foaming properties. The aim of this study was to simulate the industrial EWP (egg white protein with 0.5% w/w of egg yolk) and characterize their foaming and structural properties when hydrolyzed by two types of esterase (lipase and phospholipase A2). Results showed that egg yolk plasma might have been the main fraction, which led to the poor foaming properties of the contaminated egg white protein compared with egg yolk granules. After hydrolyzation, both foamability and foam stability of investigated systems thereof (egg white protein with egg yolk, egg white protein with egg yolk plasma, and egg white protein with egg yolk granules) increased significantly compared with unhydrolyzed ones. However, phospholipids A2 (PLP) seemed to be more effective on increasing their foaming properties as compared to those systems hydrolyzed by lipase (LP). The schematic diagrams of yolk fractions were proposed to explain the aggregation and dispersed behavior exposed in their changes of structures after hydrolysis, suggesting the aggregated effects of LP on yolk plasma and destructive effects of PLP on yolk granules, which may directly influence their foaming properties.

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