Nitrite scavenging impact of fermented soy sauce in vitro and in a pork sausage model
2019
Choi, Ji-Hun | Song, Dong-Heon | Hong, Jeong-Su | Ham, Youn-Kyung | Ha, Jae-Ho | Choi, Yun-Sang | Kim, Hyun-Wook
The objective of this study was to determine nitrite scavenging activity of fermented soy sauce in vitro and in a pork sausage model. In vitro nitrite scavenging activity (pH 6.0) of fermented soy sauce (10 mg/mL) was 13.2%. Within selected concentrations (10–100 mg/mL), in vitro nitrite scavenging activity and total phenol content of fermented soy sauce were highly dose-dependent (P < 0.001). In pork sausage model containing 120 mg/kg of NaNO2, fermented soy sauce resulted in significantly lower residual nitrite content (35.28 mg/kg) compared to only NaNO2 addition (40.12 mg/kg) at initial storage. During 4 weeks of cold storage, however, fermented soy sauce showed little effect on the residual nitrite content. This study indicates that fermented soy sauce could initially contribute to reduce residual nitrite content, and the nitrite scavenging impact of fermented soy sauce was less effective in the pork sausage model than in vitro evaluation.
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