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Davis, Thomas Wilbur, 2022. Production and purification of potato protein concentrate : an evaluation of novel adsorption resins for their effect on potato protein concentrate. Second cycle, A2E. Alnarp: SLU, Dept. Of Plant Breeding

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The Potato (Solanum tuberosum) is a tuber that is commonly used for food and contains a variety of components, including starch, dietary fiber, protein, amino acids, minerals, vitamins, and phenolic compounds. The potato plant produces phenolic compounds as a defense mechanism against bacteria, fungus, viruses, and insects. The phenolics in the tuber influence the taste and color of potato-derived food products, particularly, protein precipitated from potato fruit juice, thus rendering it less desirable for human consumption. With the world’s need for sustainable production and use of consumable protein, the present study aims to improve the quality of precipitated potato protein concentrate for human consumption using novel adsorption resins, through evaluating the effectiveness of the resins for the binding of phenolics in pure solutions as well as in potato fruit juice. Potato protein was precipitated from resin-treated potato fruit juice using acid and heat, subsequently, the total phenolic content of the potato protein concentrate was measured using the Folin-Ciocalteu spectrophotometric method. The results show that the resins are effective towards binding phenolics, but the degree of effectiveness varies from one resin to another, and from simple to more complex mixtures. It was also established that resin treatment influences both the yield of potato protein concentrate and its total phenolic content after precipitation. High yield of potato protein concentrate was related to a high phenolic content, while considerably lower yield resulted with a low phenolic content. Therefore, this suggested that a trade-off exists between the best degree of purity and quantity of protein concentrate recovered.

Main title:Production and purification of potato protein concentrate
Subtitle:an evaluation of novel adsorption resins for their effect on potato protein concentrate
Authors:Davis, Thomas Wilbur
Supervisor:Newson, William and Yilmaz, Ecevit
Examiner:Bohman, Björn
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2022
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:LM008 Horticultural Science Master's Programme, 120.0hp
Supervising department:(NL, NJ) > Dept. Of Plant Breeding
Keywords:Adsorption Resin, Potato (Solanum tuberosum), Phenolics, Potato Fruit Juice, Potato Protein Purification and Precipitation
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Subject. Use of subject categories until 2023-04-30.:Plant genetics and breeding
Deposited On:04 Jul 2022 12:03
Metadata Last Modified:09 Sep 2022 09:21

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