extremely significantp < 0.001
In this study, there were significant ( p < 0.05) differences in MK content between day 22 and 28 in C1, C2, and C6, while extremely significant ( p < 0.001) differences were observed in C3, C4, and C5, suggesting the suitability of C1, C2, and C6 as fermentation substrates for appropriately shortened-term fermentation processes.