Litopenaeus vannamei fermentation using selected Lactobacillus spp. to reduce its allergenicity

Abstract

Shrimp is a common cause of food allergies in allergic individuals. The management of patients suffering from shrimp allergy relies on avoidance of the specific food, which compromises nutritional requirements. In this study, fermentation was performed using Lactobacillus to reduce the allergenicity of Litopenaeus vannamei. The optimal fermentation conditions using Lactobacillus helveticus TS6024 were 1% glucose, 30% minced shrimp, 2.5% inoculum level, 3% NaCl, and 60 h of incubation at 37°C, whereas those using Lactobacillus acidophilus 6005 were 2% glucose, 20% minced shrimp, 15% inoculum level, 2% NaCl, and 48 h of incubation at 42°C. Under optimal conditions, Lactobacillus helveticus TS6024 and Lactobacillus acidophilus 6005 fermentation reduced the allergenicity of shrimp by 78.97% and 70.09%, respectively. SDS-PAGE analysis showed that the band intensity of tropomyosin (36KDa) reduced evidently after the selected Lactobacillus fermentation. The hypoallergenic shrimp/shrimp products will provide optimal nutrition with reduced risk of adverse reactions in hypersensitive individuals.