Impact of novel processing techniques on the functional properties of egg products and derivatives: A review

Abstract

Eggs are an excellent source of quality proteins. Eggs as a whole and its components (egg white and egg yolk) are employed in a range of food preparations. Thermal processing employed for stabilizing and improving shelf-life of egg components is known to have adverse effect on heat-sensitive proteins leading to protein denaturation and aggregation thus, reducing the required functional, technological, and overall quality of egg proteins and other constituents. Therefore, the current challenge is to identify novel processing techniques that not only improve the intrinsic functional properties of eggs or its components, but also improve the quality of the product. This review focuses on the use of technologies such as ultrasound, pulsed electric field, high-pressure processing, radiofrequency, ultraviolet light, microwave, and cold plasma for egg products. These novel technologies are known for their advantages over thermal treatments especially in protecting the heat sensitive nature and retaining the overall quality of the egg and egg products. Availability of alternatives processing has significantly improved the structural properties, techno-functional, nutritional and as well improving the safety egg and egg products. Practical Application Eggs are consumed worldwide as whole egg or in some cases, consumed partly as egg whites or egg yolks. Egg components with improved techno-functional properties can be used in various food industries (such as baking, confectionery, and culinary preparation, etc.). Value addition of new products can be achieved through modification of egg proteins. Additionally, these techniques also provide microbial safety and have a reduced impact on nutritional content and overall food quality. 1 | INTRODUCTION Current consumers demand that food manufacturers switch to a more cost-effective, nutritionally stable, and environment-friendly processing technology, as conventional technologies are seen to promote concerns in the aspects of quality, safety, and toxicity (Aadil

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“…Ultrasound is a kind of physical technique, which has the characteristics of safety, high efficiency, and environmental protection. It could be divided into low-intensity high-frequency (0.1–1 MHz) ultrasound and high-intensity low-frequency (16–100 KHz) ultrasound [11] . Low-intensity high-frequency ultrasound is normally designed for the analysis and detection of samples.…”

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“…The frequency of ultrasonic application in food processing is usually limited between 20 kHz and 500 MHz, divided into high‐frequency (100 kHz to 1 MHz) low‐energy (< 1 W·cm –2 ) diagnostic ultrasound and low‐frequency (16–100 kHz) high‐energy (10–1000 W·cm –2 ) ultrasound (Afraz et al., 2020). The hydrophobic interaction between protein molecules in EWP gels was strengthened after high‐energy ultrasonic treatment, and the free water content in the gel network was increased (Jun et al., 2020).…”

The Effects of Phosphorylation and Microwave Treatment on the Functional Characteristics of Freeze-Dried Egg White Powder

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