About this report: Dietary fibers are a growing food ingredient market. Oligosaccharides are prebiotic fiber compounds that enhance the digestive health of the lower gastrointestinal tract. This study uses twin-screw extrusion of lactose with an acid catalyst to polymerize lactose to oligosaccharides or polylactose. Current industrial methods of oligosaccharide production include extraction, chemical synthesis and enzymatic processes, which are often inefficient and result in poor yields. This study provides a continuous way to produce the polylactose oligosaccharides by way of lactose polymerization without enzymes using glucose and a citric acid catalyst.
Conclusions: The effect of formula and processing conditions of a lactose and citric acid blend on the obtained sugar profiles and fiber content were evaluated. The citric acid concentration and added glucose were varied. Conversion of up to 55% to polylactose oligosaccharides was achieved. Samples with citric acid yielded a higher level of indigestible oligosaccharides. Also, the addition of glucose was beneficial to fiber yield, reduced the motor torque, improved process conditions and resulted in lighter color polylactose fiber.
Project outcomes: Lactose is a major coproduct of the dairy industry and is in abundant supply. This research demonstrated a tremendous opportunity to transform lactose from a dairy commodity ingredient to a value-added, “polylactose,” dietary fiber ingredient for expanded use in the food and beverage industries.
Partners: Midwest Dairy Association, University of Minnesota
PROJECT OVERVIEW AURI was interested in quantifying the contribution of its programs in Minnesota. Thus, you hired University of Minnesota Extension to conduct an economic contribution study. The economic contribution study measured the direct effect of AURI’s business assistance (operating revenues, capital expenditures, and jobs). AURI provided all required data to Extension. Extension then used […]
By AURI One of the most important issues faced by farmers and ag producers is that of nitrogen runoff from their fields into the surface water supply via tile drainage systems. This runoff of nitrogen has a negative effect on water quality, and contributes to a hypoxic zone in the Gulf of Mexico. However, a […]
Consumer demand for protein products expected to double by 2025. Can the Minnesota ag community benefit? In response to an ongoing rise in consumer demand for foods with increased protein content, the Agricultural Utilization Research Institute (AURI) released a new study exploring ways Minnesota’s agriculture sector could benefit from this trend. The 47-page report, available […]
AURI client Clean Plus, Inc. (CPI), a West Concord, Minnesota, company that has been in operation since 1982 and boasts about a dozen employees competes for 2018 World Bio Markets Biobased Product of the Year. CPI has several divisions that produce and distribute a variety of products, including Drip Trap® Granules, which are made from corn stalks and are used to contain and clean up spills such as chemicals, oil and fuel.
Camelina Open House Field Day: June 27, 2018 Southern Research and Outreach Center 12298 350th Avenue Waseca, MN Transforming Food, Fuel and Feed in Minnesota Waseca, MN. — The University of Minnesota Forever Green Initiative and the Agricultural Utilization Research Institute (AURI) invite processors, food entrepreneurs, culinary professionals, growers, and the curious public to an […]