Comparative Effects of HPP and Irradiation on Plant-Based Whole Hard-Boiled Eggs

Yupakanit Puangwerakul; Chitsuda Chaisakdanukul; Suvimol Soithongsuk; Surasak Sajjaut; Wachiraporn Pewlong

doi:10.59796/jcst.V14N3.2024.66

Authors

Yupakanit Puangwerakul Faculty of Food Technology, Rangsit University, Pathum Thani 12000, Thailand
Chitsuda Chaisakdanukul Faculty of Food Technology, Rangsit University, Pathum Thani 12000, Thailand
Suvimol Soithongsuk Innovative Research and Incubation of Entrepreneur Center, Rangsit University, Pathum Thani 12000, Thailand
Surasak Sajjaut Thailand Institute of Nuclear Technology, Nakornnayok 26120, Thailand
Wachiraporn Pewlong Thailand Institute of Nuclear Technology, Nakornnayok 26120, Thailand

DOI:

https://doi.org/10.59796/jcst.V14N3.2024.66

Keywords:

plant-based egg, HPP, EBI, gamma ray, non-thermal processing, shelf life extension

Abstract

This study compared the effects of high-pressure processing (HPP) and irradiation on the shelf life and quality of plant-based whole hard-boiled eggs. The objective was to determine the optimal treatment doses for microbial inactivation and shelf life, and to assess their impacts on the product's physical, chemical, and sensory properties. Irradiation treatments were applied at 0, 2, 3.5, and 5 kGy, while HPP was conducted at 0, 300, 400, and 500 MPa. Post-treatment analysis included assessments of physical, chemical, and microbial quality, focusing on Clostridium perfringens, and sensory evaluations using a 9-point hedonic scale. Shelf life was predicted using accelerated shelf-life testing (ASLT) at 40°C and 50°C, employing the temperature acceleration factor (Q₁₀) and temperature quotient (Q₁). Results showed that gamma irradiation at 3.5 kGy and electron beam irradiation at 5 kGy both provided a predicted shelf life of 217 days, while HPP at 500 MPa resulted in a predicted shelf life of 146 days. All treatments initially eliminated microorganisms effectively, but HPP showed potential for spore germination during extended storage. Sensory evaluations indicated that electron beam irradiation and HPP better maintained product quality compared to gamma irradiation at higher doses. This study provides valuable insights for food manufacturers seeking to enhance the safety and quality of plant-based egg alternatives using non-thermal processing methods.

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