Annamalai Jeyakumari, Sivam Visnuvinayagam, Unnikrishnan Parvathy, Kuppa Sivasankara Sarma, Kaushlesh Pansingh Rawat, Shaik Abdul Khader, Lakshmi Narashimha Murthy, Chandragiri Nagarajarao Ravishankar
Mumbai Research Centre of ICAR-CIFT, Sector-1, Vashi, Navi Mumbai, 400 703 India.
2ICAR-Central Institute of Fisheries Technology (CIFT), Cochin, 682029 India.
J Food Sci Technol. 2020 Jun;57(6):2150-2158. doi: 10.1007/s13197-020-04250-7. Epub 2020 Jan 23.
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. * value showed a decreased trend during storage (51.87-13.89). Moreover, * and * 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 HS former count. There is a significant ( < 0.05) reduction in 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.
评估了电子束辐照(0、2.5、5.0、7.5和10千戈瑞)对在冷藏条件(2℃)下储存的真空包装无头凡纳滨对虾品质特性的影响。在储存期间,总挥发性盐基氮、非蛋白氮含量、过氧化值和硫代巴比妥酸反应性物质呈上升趋势。质地分析表明,辐照剂量高于2.5千戈瑞的虾硬度低于对照组。值在储存期间呈下降趋势(51.87 - 13.89)。此外,和值在储存期间逐渐增加。辐照样品中的总活菌数低于对照组。嗜冷菌、假单胞菌和HS形成菌数量也观察到类似趋势。辐照样品中的和乳酸菌数量显著减少(<0.05)。基于微生物和感官分析,对照组的货架期长达第12天。然而,电子束辐照样品的货架期根据剂量水平延长至15 - 23天。