Unspent antimicrobial solution that did not contact the moving raw food products and {HEAD ~ rebound antimicrobial solution} that did contact the raw food products combine to form {TAIL ~ a reclaimed antimicrobial solution} 
combine to form
Unspent antimicrobial solution that did not contact the moving raw food products and { HEAD ~ rebound antimicrobial solution } that did contact the raw food products combine to form { TAIL ~ a reclaimed antimicrobial solution }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL