📞 Call (636) 200-9050 – Talk to Our Dairy Team
Nationwide Dairy Manufacturing Services
Diversified Ingredients provides commercial and industrial dairy manufacturing solutions through our Preston Protein Products division for pet food, feed, and human food manufacturers across the United States. Diversified Ingredients provides dairy manufacturing, processing, and drying services along with functional dairy blends for food, feed, and pet food manufacturers nationwide.
We are a dairy manufacturing partner with nationwide reach. Our dairy division, Preston Protein Products, has been processing dairy products since 1910, and joined the Diversified Ingredients family in 2020. Our combined teams support customers across the country with sourcing, processing, drying, and functional dairy blend production.
Dairy manufacturing carries strict requirements. Pasteurization records, microbiological testing, allergen control, and traceability documentation move with every load. Markets shift. Tankers run late. Spec sheets get challenged at audit. We get it. Our team has spent decades inside the dairy products sector, and our processor partnerships, supply chain controls, and quality programs are built around the realities of food-grade dairy production.
Our Preston Protein Products processing and drying facility extends our reach into specialized dairy production for customers nationwide. Read more about that division on our Divisions page.
What Dairy Manufacturing Covers
Dairy manufacturing at the industrial level covers receiving fluid dairy, processing, drying, blending, packaging, and shipping food-grade dairy ingredients to manufacturers. Through our Preston Protein Products division, we process and dry fluid dairy products and produce highly functional food-grade dairy blends used by food, feed, and pet food companies.
Dairy Products We Process and Distribute
- Whey powders, whey protein concentrates, and whey protein isolates
- Casein and caseinates
- Lactose powders
- Milk powders (whole, skim, nonfat)
- Butter powders and cream ingredients
- Specialty cheese powders
- Custom functional blends through Preston Protein Products
Each shipment travels with Certificates of Analysis, allergen statements, country-of-origin records, and traceability information.
Industries We Serve
- Pet food manufacturers
- Livestock feed producers
- Human food and nutrition companies
Dairy ingredients move into bakery operations, confectionery, beverage formulation, sports nutrition, dietary supplement manufacturing, prepared meal companies, sauce and dressing producers, and pet food brands.
Quality Assurance and Regulatory Documentation
- FDA and USDA requirements
- FSVP compliance for imported items
- SQF, BRC, and customer-specific quality programs
Director of Compliance Jennifer Bleicher leads regulatory and quality work. Read more on our Quality Assurance page.
Logistics and Distribution
- Trucking and rail
- Transloading
- Warehousing
- Import, export, and ocean freight
We operate transloading and distribution centers in Pennsylvania (DI Meadville) and Missouri (IDS).
A Word About Our Reputation
Diversified Ingredients has built a trusted reputation across the dairy and food manufacturing community. Our experienced sales and operations teams solve sourcing problems for buyers who need answers fast. Industry contacts describe us as professional, reliable, and established. Our 39 years in business reflect steady customer relationships built one shipment at a time.
Industry Memberships
- U.S. Dairy Export Council (USDEC)
- American Dairy Products Institute (ADPI)
- American Feed Industry Association (AFIA)
- Pet Food Institute (PFI)
- USA Rice Federation
- AAFCO
Service Areas Nationwide
Our network reaches manufacturing operations across the country:
- Northeast: New York City, Philadelphia, Boston, Pittsburgh
- Southeast: Charlotte, Atlanta, Jacksonville, Nashville, Miami
- Midwest: Chicago, Indianapolis, Columbus, Detroit, Minneapolis, Kansas City
- South Central: Houston, Dallas, Austin, San Antonio, Fort Worth, Oklahoma City
- Mountain West: Denver, Phoenix, Salt Lake City, Las Vegas
- West Coast: Los Angeles, San Diego, San Jose, San Francisco, Seattle, Portland
See our Service Areas page for more detail.
Client Testimonials & Reviews for Diversified Ingredients
“Great company! Led by even greater people. Dave Dressel is one of the finest and most honest individuals I’ve had the pleasure of meeting and getting to know. He knows this industry very well and you can trust his word!”
— Stephen Wigginton, Wigginton Law Firm LLC (via Alignable)
Recommended Diversified Ingredients on Alignable as a respected business partner.
— Bridget Nations, Fenton Area Chamber of Commerce
Frequently Asked Questions
What dairy manufacturing capabilities does Diversified Ingredients offer?
Through our Preston Protein Products division, we process and dry fluid dairy products and produce highly functional food-grade dairy blends. The Preston facility has been processing dairy since 1910 and joined Diversified Ingredients in 2020.
What dried dairy products does dairy manufacturing produce?
Our dairy portfolio includes whey powders, whey protein concentrates and isolates, casein and caseinates, lactose, milk powders, butter powders, and specialty cheese powders, plus custom functional blends.
What documentation does dairy manufacturing provide?
Each shipment includes Certificates of Analysis, allergen statements, country-of-origin records, traceability information, and pasteurization data. We support FDA, USDA, FSVP, SQF, BRC, and customer-specific audit requirements.
Does dairy manufacturing support NonGMO and organic dairy production?
Yes. We source NonGMO Project Verified and organic dairy options when customers request them.
What industries does nationwide dairy manufacturing serve?
Pet food manufacturers, livestock feed producers, and human food and nutrition companies, supporting bakery, confectionery, beverage, supplement, prepared meal, and pet food applications.
How long has dairy manufacturing through Preston Protein Products been in operation?
Diversified Ingredients has operated since 1987. Our Preston Protein Products dairy division has been processing dairy products since 1910, joining the Diversified Ingredients family in 2020.
Key Takeaways
- Preston Protein Products has processed dairy since 1910
- The dairy facility joined Diversified Ingredients in 2020
- We produce highly functional food-grade dairy blends
- Quality team supports FDA, USDA, and FSVP documentation
- Logistics network covers trucking, rail, transloading, and warehousing
- Memberships include USDEC, ADPI, AFIA, and PFI
Conclusion
Reliable dairy manufacturing keeps food, feed, and pet food production lines running on spec. With a dedicated dairy processing division, our team handles the manufacturing side of dairy ingredient supply. Call Diversified Ingredients at (636) 200-9050 or visit diversifiedingredients.com to connect with our team. Our headquarters address for shipping and correspondence is 870 Woods Mill Rd, Ballwin, MO 63011. View on Google Maps.