Dupont Food Industry Solutions (DFIS), Wilmington, DE, has added two new members to its team. Marvin Rudolph and James Ko have both been appointed to the position of business director. Most recently, Dr. Rudolph was the food product development director at Arthur D. Little, Inc. Mr. Ko brings over 25 years of experience in a variety of roles at companies such as Kraft and Bristol-Myers Squibb.