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Table 7 FTIR spectrum of D-limonene, WGPI/MSLM films [51]

From: Active packaging based on wheat germ protein isolate–Malva sylvestris leaf mucilage embedded with D-limonene nanoliposome: preparation and characterization

Sample

Wave number (cm−1)

Functional group

 

886

C = C bending

Nanoliposome containing D-limonene

1250

C–O stretching

 

1450

C–H bending

 

1637

C = C stretching

 

1670

C = O stretching

 

1715

C = O stretching

 

3345

O–H stretching

WGPI/MSLM film

1098

C–O stretching

 

1248

C–O stretching

 

1352

O–H bending

 

1465

C–H bending

 

1750

C = O stretching

 

2929

C–H stretching

 

3008

C–H stretching

 

777

C–H bending

 

885

C = C bending

 

898

C–H bending

 

987

C–H bending

WGPI/MSLM film containing NLP

1072

C–O stretching

 

1140

C–O stretching

 

1167

C–O stretching

 

1201

C–O stretching

 

1389

O–H bending

 

1429

O–H bending

 

1647

C = C stretching

 

2899

C–H stretching

 

3526

O–H stretching