Either glycerol or lactic acid as plasticizer and, optionally, {HEAD ~ starch} may also be blended with either the pectin or chitosan solutions used for {TAIL ~ film preparation} 
Either glycerol or lactic acid as plasticizer and , optionally , { HEAD ~ starch } may also be blended with either the pectin or chitosan solutions used for { TAIL ~ film preparation }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL