Effect of electron beam irradiation on the biochemical, microbiological and sensory quality of Litopenaeus vannamei during chilled storage
Effect of electron beam irradiation on the biochemical, microbiological and sensory quality of Litopenaeus vannamei during chilled storage
Date
2020
Authors
Annamalai, Jeyakumari
Sivam, Visnuvinayagam
Unnikrishnan, Parvathy
Sivasankara, Sarma Kuppa
Pansingh, Rawat Kaushlesh
Abdul, Khader Shaik
Lakshmi, Narashimha Murthy
Nagarajarao, Ravishankar Chandragiri
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Abstract
The effects of electron beam irradiation (0, 2.5,
5.0, 7.5 and 10 kGy) on the quality characteristics of
vacuum packed headless vannamei stored under chilled
condition (2 C) was assessed. The total volatile base
nitrogen, non protein nitrogen content, peroxide value and
thiobarbituric acid reactive substances showed an increasing
trend during storage. Texture analysis indicated that
shrimp irradiated at above 2.5 kGy dose had a lower
hardness than control. L* value showed a decreased trend
during storage (51.87–13.89). Moreover, b* and a* value
showed a gradual increase during storage. The total viable
count was lower in the irradiated sample than control. A
similar trend also observed for psychrophilic, pseudomonas
and H2S former count. There is a significant (p\0.05)
reduction in Brochothrix thermosphacta and lactobacillus
count in the irradiated sample. Based on the microbial and
sensory analysis control had a shelf life up to 12th day.
However, electron beam irradiated sample had extended
shelf life of 15–23 days with respect to dose level.
Description
Keywords
Vannamei, Electron beam irradiation, Vacuum packing, Chilled storage, Shelf life
Citation
Food Sci Technol, 57(6):2150–2158