Author, Institution: Karolina Trakšelytė – Rupšienė, Kaunas University of Technology
Science area, field of science: Technological Sciences, Chemical Engineering, T005
Scientific Supervisor: Prof. Dr. Hab. Gražina Juodeikienė (Kaunas University of Technology, Technological Sciences, Chemical Engineering, T005)
Dissertation Defence Board of Chemical Engineering Science Field:
Prof. Dr. Naglis Malys (Kaunas University of Technology, Technological Sciences, Chemical Engineering, T005) – chairperson
Assoc. Prof. Dr. Loreta Bašinskienė (Kaunas University of Technology, Technological Sciences, Chemical Engineering, T005)
Assoc. Prof. Dr. Vilma Kaškonienė (Vytautas Magnus University, Natural Sciences, Chemistry, N003)
Assoc. Prof. Dr. Dace Klava (Latvia University of Life Sciences and Technologies, Faculty of Food Technology, Latvia, Technological Sciences, Chemical Engineering, T005)
Prof. dr. Aušra Šipailienė (Kaunas University of Technology, Technological Sciences, Chemical Engineering, T005)
Dissertation defence meeting will be at the Meeting room at Santaka Valley of Kaunas University of Technology (K. Baršausko 59 – A228, Kaunas)
The doctoral dissertation is available at the library of Kaunas University of Technology (K. Donelaičio g. 20, Kaunas)
Annotation: Globally and in Lithuania, the entire production and supply chain generates huge amounts of waste and by-products of the agricultural and food industry, which contain valuable components, such as proteins, and usually they are used irrationally, discarded or used for compost. These by products are generated in large quantities and pose a serious environmental problem. The paper reviews the selection and application of biotechnological solutions for the valorization of plant-based food processing by-products (corn steep liquor, plant drink production by-products) into value-added products, such as protein hydrolysates and antimicrobial bioproducts. In this way, the amount of raw materials is increased and sustainable production is promoted. Enzymatic hydrolysis with proteases and pre-treatment of raw material with low (37 kHz) and high (850 kHz) ultrasound were selected for the efficient production of protein hydrolysates from food processing by-products which are rich in proteins. The production of antimicrobial bioproducts from substrates of different origins (wastes from plant drink production) using LAB fermentation was determined. Fermented permeates inhibited the growth of Fusarium spp. and improved the growth of winter wheat (Triticum aestivum) damaged by Fusarium spp. microscopic fungi. In order to accelerate the production and selection of novel biostimulants, it is necessary to expand the scientific knowledge about the effects of biostimulant application on plant physiology. Testing the potential biostimulatory activity of obtained products, such as protein hydrolysates, under laboratory conditions includes complex analysis, such as seed germination study, changes in microbiological contamination, and the improvement of resistance of plants to cold stress due to protein-based biostimulant application.
June 5 d. 13:00
Meeting room at Santaka Valley of Kaunas University of Technology (K. Baršausko 59 – A228, Kaunas)
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