Abstract
This study was determine the optimum fermentation time of low-salt fermented sea squirt with Maesil extracts, it was prepared by adding 1% of roasted salt and 5% of Maesil extracts to 1 kg of sea squirt and then changed the fermentation time to 0 (MFT-0), 24 (MFT-24), 48 (MFT-48), 72 (MFT-72) and 144 (MFT-144) hours. The viable cell count of MFT-0, MFT-24, MFT-48, MFT-72 and MFT-144 were 3.9, 4.3, 4.1, 3.8 and 3.3 logCFU/g, respectively. The volatile basic nitrogen content were 11.5, 18.2, 21.0, 25.1 and 28.3 mg/100 g, respectively. The amino-N content (138.1 to 212.3 mg/100 g) tend to increase with the increase of fermentation time. For the color value, lightness had the highest value for MFT-0, but redness and yellowness had the highest value for MFT-144. The amount of free amino acid gradually increased with the increase of fermentation time, in which the main amino acids were glutamic acid, glycine and alanine in all samples. The color, odor, taste and overall acceptance score decreased after 24 hours of fermentation, and MFT-24 had the highest score of texture. Therefore, fermentation at 3~4℃ for 24 hours was suggested to be the optimum manufacturing condition.
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