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Table 1 Selectivity of MB peak current in 0.1 mol l−1 PBS (pH 7) at scan rates of 0.1 V s−1 after 30 min incubation in 20 µM MB

From: A simple, portable, electrochemical biosensor to screen shellfish for Vibrio parahaemolyticus

Sample

ipa (× 10−6 A)

Selectivity rate (%)

Bare electrode

3.63

–

Non-complementary DNA

2.73

75.21

3-Base mismatched DNA

1.83

50.41

1-Base mismatched DNA

1.40

38.57

Complementary DNA

1.00

27.55