Effects of fermentation methodon quality of sakura shrimp sauce

Abstract

The aim of this study was to investigate the quality of fermented seasonings from sakura shrimp, Lucensosergia lucens, prepared using various fermentation methods in order to produce unique products for the purpose of efficient utilization of valuable resources. Seven shrimp sauce mashes (moromis) were prepared from minced meat with shells of sakura shrimp using two koji molds (rice koji (RK) and sakura shrimp koji (SSK)), 15 % salt, halophilic lactic acid bacterium (Tetragenococcus halophilus) and soy sauce yeast (Zygosaccharomyces rouxii). After fermentation at 30°C for 24 weeks, moromis were heated up to 90°C and filtrated with No. 5C. The physicochemical properties of the moromis during fermentation and the final products were investigated. The pH decrease during fermentation was faster in moromis with T. halophilus than in moromis without. Total nitrogen (TN) of all moromis increased quickly up to 4 weeks and remained almost constant up to 24 weeks. TN levels at the endof fermentation were higher in SSK moromis than in RK moromis. On free amino acid(FAA) analysis, total FAA levels of the final products were higher in SSK than in RK, while levels of Glu, Asp, Leu and Ala were high in all samples.