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Table 1. The amount of 0.01 N NaOH added to analyze the volatile basic nitrogen of pork samples in manual and automatic titration Sample No.Manual titrationAutomatic titrationSignificance1234560.893±0.00431)0.750±0.00150.697±0.00980.385±0.00590.279±0.00500.134±0.00250.894±0.00590.748±0.00430.689±0.00640.387±0.00670.278±0.00840.136±0.0032NS2) NSNSNSNSNS1)Mean±standard deviation for 5 replicates.2)Not significantly different at α=0.05 level.