Lactose Polymerization to Polylactose: Furthering Our Understanding for Commercialization

Loading...
Thumbnail Image

Persistent link to this item

Statistics
View Statistics

Journal Title

Journal ISSN

Volume Title

Title

Lactose Polymerization to Polylactose: Furthering Our Understanding for Commercialization

Published Date

2017-08

Publisher

Type

Thesis or Dissertation

Abstract

Polylactose, soluble fiber that has been manufactured from a blend of lactose, glucose and citric acid using reactive extrusion, has been developed in our lab. A benchtop method for polylactose production was developed that allowed for the evaluation of formulation impact on the polymerization reaction and investigation of the use of permeate powder as the polylactose raw material. Water content and calcium phosphate concentration were the investigated formulation parameters. Elevated levels of water (22.86%, 28.57%, v/w) and calcium phosphate (0.928%, 1.856%, w/w) reduced the soluble fiber yield, meaning the polymerization reaction was inhibited. Polymerization of lactose in permeate was achieved on both a benchtop and pilot plant scale when using a blend of 90% permeate and 10% citric acid. This research also evaluated the development of a purification method for polylactose through filtration. Passing a 200 mg/mL solution of polylactose in water through a column packed with activated carbon, ion exchange resins composed of Amberlite and Ambersep and diatomaceous earth reduced the hydroxymethylfurfural (HMF) content to a level that was lower than the maximum level determined by the Joint FAO/WHO Expert Committee on Food Additives HMF limit in polydextrose, while increasing the fiber content and decreasing the citric acid content.

Keywords

Description

University of Minnesota M.S. thesis. August 2017. Major: Food Science. Advisor: Tonya Schoenfuss. 1 computer file (PDF); viii, 103 pages.

Related to

Replaces

License

Series/Report Number

Funding information

Isbn identifier

Doi identifier

Previously Published Citation

Suggested citation

Kuechel, Alexandra. (2017). Lactose Polymerization to Polylactose: Furthering Our Understanding for Commercialization. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/208937.

Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.