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Table 3 Antimicrobial activity of the enzymatic hydrolysates of protein extract from U. dermestoides and T. molitor against selected microorganisms

From: Comparative study of composition, antioxidant and antimicrobial activity of two adult edible insects from Tenebrionidae family

Protein digested extract Diameter of growth inhibition zone (mm)
P. vulgaris S. flexnerii Bacillus t. subsp. Tenebrionis Bacillus t. subsp. kenyae Enzymatic control
U. dermestoides 9 (+++) 11 (++++) 13.5 (++++) 7.7 (+++) < 1 (−)
T. molitor 7.5 (+++) 12 (++++) 8.5 (+++) 5.5 (++) < 1 (−)
  1. Each value is expressed as mean (n = 3) and standard deviations were less than 5%. No antimicrobial activity (−), inhibition zone < 1 mm. Slight antimicrobial activity (+), inhibition zone 2–3 mm. Moderate antimicrobial activity (++), inhibition zone 4–5 mm. High antimicrobial activity (+++), inhibition zone 6–9 mm. Strong antimicrobial activity (++++), inhibition zone > 9 mm. Standard deviation ± 0.4 mm. The protein crude extracts showed no inhibition zone