A graduate student of his, R. Paul Singh, now a professor of Agricultural and Biological Engineering at the University of California, Davis, creates a series of food engineering instruction books with Heldman that have become the teaching tool for people involved in food processing since 1974.
[2][3] After leaving Michigan State in 1984, Heldman moved to Campbell Soup Company in Camden, New Jersey where he was Vice President for Process Research & Development until 1986.
After that, he joined the National Food Processors Association in Washington, D.C. where he served in various positions until 1991.
Heldman then worked for the Weinberg Group [4] from 1991 to 1992 as a consultant to the food industries before returning to academia.
In 1992, Heldman returned to the academic world as Professor of Food Engineering at the University of Missouri where he served in various research and leadership positions until 1998.