Seed sprouts are susceptible to microbial contaminations, which might cause foodborne illnesses. In this study, gamma-and electron beam (e-beam)-irradiated (0-3 kGy) Chinese cabbage seeds (Brassica rapa ssp. Pekinensis) and their sprouts were investigated for the physicochemical, functional and microbiological qualities during storage. The irradiated seeds and their sprouts showed better overall microbial quality compared with nonirradiated samples; however, their hygienic quality profiles were same during storage of sprouts. The contents of ascorbic acid, carotenoid, chlorophyll and total phenolics of the seeds increased during germination but negligible changes were found during postharvest storage. Gamma irradiation and e-beam had similar effects on the physicochemical quality of Chinese cabbage seed sprouts with few exceptions (low germination rate of e-beam-treated seeds). These effects should be considered to obtain acceptable hygienic, nutritional and sensory attributes of irradiated Chinese cabbage seeds.
PRACTICAL APPLICATIONSThe sprouted seeds widely used for human consumption are the suspect carriers of bacterial pathogens, which can outbreak sprout-related foodborne illnesses. Irradiation treatment is a promising technology to increase shelf life of sprouts and reduce bacterial pathogen contamination with minimum concession of nutritional and sensory aspects. However, it is significant to establish the effect of applied irradiation dose on the seed germination, sprout length, quality parameters and overall acceptability. bs_bs_banner
Journal of Food Quality