Emergency Food Product Packaging by Pectin-Based Antimicrobial Coatings Functionalized by Pomegranate Peel Extracts

Table 2

Antimicrobial effects of pomegranate peel extracts on S. aureus and E. coli.

Type of extract

Type of microorganism

Extract concentration (mg/ml)

5

10

15

20

30

40

50

60

70

80

90

100

Aqueous

S. aureus

++

++

++

++

++

+

8 colonies

−

−

−

−

−

E. coli

++

++

++

++

++

++

++

++

+

8 colonies

−

−

Ethanolic

S. aureus

++

++

++

+

5 colonies

−

−

−

−

−

−

−

E. coli

++

++

++

++

++

+

6 colonies

−

−

−

−

−

++ shows the high growth, + indicates low growth, and – indicates lack of growth of microorganism.