Extrusion of rice grits with lingonberry pomace hydrolysate: moisture content and characteristics of the extrudate

Fruit and berry pomaces are promising sources of biologically active compounds: dietary fibers, phenolic compounds, pectins, carotenoids, and natural antioxidants that have preventive and therapeutic effects in metabolic, cardiovascular, gastrointestinal and neurodegenerative diseases. The active inclusion of pomaces as by-products in the food technologies contributes to the transition to more sustainable industrial processes. The study was conducted to investigate the influence of the moisture content of the mixture during the processing of rice with hydrolysate of lingonberry pomace on the operating parameters of extrusion, technological and physicochemical characteristics of the extrudates. Lingonberry pomace hydrolysate was obtained by an enzymatic method using a complex of biocatalysts, including pectinase, cellulase, protease and lipase. The hydrolysate was dried, added in an amount of 5 % to rice and extruded varying the moisture content in the range of 15–21 %. Control samples were rice extrudates obtained with a moisture content of 15 and 21%. An increase in the moisture of the extruded mixture led to a decrease the extrusion temperature from 160 to 152 °C, the torque from 80 to 52 %, the pressure from 4.0 to 2.4 MPa, and the specific mechanical energy from 0.152 to 0.099 kW h/kg. In terms of structural and mechanical properties, an increase in moisture of mixture with hydrolyzed lingonberry pomace leads to a decrease in the quadratic expansion coefficient from 7.3 to 3.5. The bulk density increases from 89.5 to 243.2 g/dm3 , the hardness of the extrudates – from 7.5 to 39.0 N, the average crushing force – from 3.4 to 16.1 N. The frequency of microfractures during puncture and deformation as a characteristic of porosity decreases from 3.5 to 2.0 mm-1 . The dynamic viscosity of suspensions of extrudates with lingonberry pomace hydrolyzate increases significantly with increasing moisture content during extrusion from 2.0 to 4.0 Pa s. The trends in changes in thermomechanical processing modes determined by the amount of water in the system, technological and structuralmechanical properties for the control and experimental mixtures were identical without significant differences. It was established that the maximum content of phenolic compounds of 679. 6 mg/kg corresponds to extrudates with hydrolyzed lingonberry pomace produced at minimum moisture of 15 %, by moisture of 21 % the content of phenolic compounds is only 223.1 mg/kg

1. Brennan M. A., Derbyshire E., Brennan C. S., Tiwari B. K. Impact of dietary fibre-enriched ready to eat extruded snacks on the postprandial glycaemic response of non-diabetic patients. Molecular Nutrition and Food Research. 2012;56(5):834–837. DOI: https://doi.org/10.1002/mnfr.201100760

2. Brennan M. A., Derbyshire E. J., Tiwari B. K., Brennan C. S. Ready‐to‐eat snack products: The role of extrusion technology in developing consumer acceptable and nutritious snacks. International Journal of Food Science and Technology. 2013;48(5):893–902. DOI: https://doi.org/10.1111/ijfs.12055

3. Santos D., Lopes S., Pintado J. Fruit and vegetable by-products' flours as ingredients A review on production process, health benefits and technological functionalities. LWT – Food Science and Technology. 2021;154:112707. DOI: https://doi.org/10.1016/j.lwt.2021.112707

4. Iqbal A. S., Shulz P., Rizvi S. Valorization of bioactive compounds in fruit pomace from agro-fruit industries: Present Insights and future challenges. Food Bioscience. 2021;44(Part A):101384. DOI: https://doi.org/10.1016/j.fbio.2021.101384

5. Mäkilä L., Laaksonen O., Ramos-Diaz J. M., Vahvaselkä M., Myllymäki O., et al. Exploiting blackcurrant juice press residue in extruded snacks. LWT – Food Science and Technology. 2014;57(2):618–627. DOI: https://doi.org/10.1016/j.lwt.2014.02.005

6. White B. L., Howard L. R., Prior R. L. Polyphenolic composition and antioxidant capacity of extruded cranberry pomace. Journal of agricultural and food chemistry. 2010;58(7):4037–4042. DOI: https://doi.org/10.1021/jf902838b

7. Höglund E., Eliasson L., Oliveira G., Almli V., Sozer N., Alminger M. Effect of drying and extrusion processing on physical and nutritional characteristics of bilberry press cake extrudates. LWT – Food Science and Technology. 2018;92:422–428. DOI: https://doi.org/10.1016/j.lwt.2018.02.042

8. Wang S., Gu B. J., Ganjyal G. M. Impacts of the Inclusion of Various Fruit Pomace Types on the Expansion of Corn Starch Extrudates. LWT – Food Science and Technology. 2019;110:223–230. DOI: https://doi.org/10.1016/j.lwt.2019.03.094

9. Majerska J., Michalska A., Figiel A. A review of new directions in managing fruit and vegetable processing by-products. Trends in Food Science & Technology. 2019;88:207–219. DOI: https://doi.org/10.1016/j.tifs.2019.03.021

10. Volkova G. S., Sokolova E. N., Ionov V. V., Yuraskina T. V., Serba E. M. Prospective directions of berry cake processing into food ingredients. Pishchevaya promyshlennost' = Food Industry. 2023;(11):35–39. (In Russ.). DOI: https://doi.org/10.52653/PPI.2023.11.11.008

11. Kitryte V., Kraujalienė V., Šulniūtė V., Pukalskas A., Venskutonis R. Chokeberry pomace valorization into food ingredients by enzyme-assisted extraction: Process optimization and product characterization. Food and Bioproducts Processing. 2017;105:36–50. DOI: https://doi.org/10.1016/j.fbp.2017.06.001

12. Roda-Serrat M. C., Lundsfryd C., Rasmussen S., El-Houri R., Lund P. B., Christensen K. V. Enzyme-assisted extraction and ultrafiltration of value-added compounds from sour cherry wine pomace. Chemical Engineering Transactions. 2019;74:811–816. DOI: https://doi.org/10.3303/CET1974136

13. Saad N., Louvet F., Tarrade S., Meudec E., Grenier K., Landolt C., Ouk T. S., Bressollier P. Enzyme-Assisted Extraction of Bioactive Compounds from Raspberry (Rubus idaeus L.) Pomace. Journal of Food Science. 2019;84(6):1371–1381. DOI: https://doi.org/10.1111/1750-3841.14625

14. Syrpas M., Valanciene E., Augustiniene E., Malys N. Valorization of Bilberry (Vaccinium myrtillus L.) Pomace by Enzyme-Assisted Extraction: Process Optimization and Comparison with Conventional Solid-Liquid Extraction. Antioxidants. 2021;10(5):773. DOI: https://doi.org/10.3390/antiox10050773

15. Fierascu R. C., Fierascu I., Avramescu S. M., Sieniawska E. Recovery of Natural Antioxidants from Agro-Industrial Side Streams through Advanced Extraction Techniques. Molecules. 2019;24(23):4212. DOI: https://doi.org/10.3390/molecules24234212

16. Koch W. Dietary Polyphenols-Important Non-Nutrients in the Prevention of Chronic Noncommunicable Diseases. A Systematic Review. Nutrients. 2019;11(5):1039. DOI: https://doi.org/10.3390/nu11051039

17. Fernandes A., Mateus N., De Freitas V. Polyphenol-Dietary Fiber Conjugates from Fruits and Vegetables: Nature and Biological Fate in a Food and Nutrition Perspective. Foods. 2023;12(5):1052. DOI: https://doi.org/10.3390/foods12051052

18. Kostka T., Ostberg‐Potthoff J. J., Stärke J., Guigas C., Matsugo S., Mirčeski V., et al. Bioactive Phenolic Compounds from Lingonberry (Vaccinium vitis‐idaea L.): Extraction, Chemical Characterization, Fractionation and Cellular Antioxidant Activity. Antioxidants. 2022;11(3):467. DOI: https://doi.org/10.3390/antiox11030467

19. Lyutikova M., Botirov E. The chemical composition and the practical application of berries cranberries and cranberry. Khimiya rastitel'nogo syr'ya = Chemistry of plant raw material. 2015;(2):5–27. (In Russ.). DOI: https://doi.org/10.14258/jcprm.201502429

20. Kitrytė V., Kavaliauskaitė A., Tamkutė L., Pukalskienė M., Syrpa M., Rimantas Venskutonis P. Zero waste biorefining of lingonberry (Vaccinium vitis-idaea L.) pomace into functional ingredients by consecutive high pressure and enzyme assisted extractions with green solvents. Food chemistry 2020;322:126767. DOI: https://doi.org/10.1016/j.foodchem.2020.126767

21. Brito A. D. C., Jisaka J. S., Pereira A. C. R., Steel C. J. Thermoplastic extrusion technology as a tool for adding value to brewer's by-products. LWT – Food Science and Technology. 2023;189:115487. DOI: https://doi.org/10.1016/j.lwt.2023.115487

22. Carvalho C. W. P., Takeiti C. Y., Onwulata C. I., Pordesimo L. O. Relative effect of particle size on the physical properties of corn meal extrudates: Effect of particle size on the extrusion of corn meal. Journal of Food Engineering. 2010;98(1):103–109. DOI: https://doi.org/10.1016/j.jfoodeng.2009.12.015

23. Muñoz-Pabon K. S., Parra-Polanco A. S., Roa-Acosta D. F., Hoyos-Concha J. L., Bravo-Gomez J. E. Physical and paste properties comparison of four snacks produced by high protein quinoa flour extrusion cooking. Frontiers in Sustainable Food Systems. 2022;(6):852224. DOI: https://doi.org/10.3389/fsufs.2022.852224

24. Yu H., Liu H., Erasmus S. W., Zhao S., Wang Q., van Ruth S. M. An explorative study on the relationships between the quality traits of peanut varieties and their peanut butters. LWT – Food Science and Technology. 2021;151:112068. DOI: https://doi.org/10.1016/j.lwt.2021.112068

25. Denisenko T. A., Vishnikin A. B., Tsyganok L. P. Spectrophotometric determination of phenolic compounds sum in plants using aluminum chloride, 18-molybdodiphosphate and Folin-Ciocalteu reagents. Analitika i kontrol'. 2015;19(4):373–380. (In Russ.). DOI: https://doi.org/10.15826/analitika.2015.19.4.012

26. Mburu M. W., Gikonyo N. K., Kenji G. M., Mwasaru A. M. Properties of a complementary food based on amaranth grain (Amaranthus cruentus) grown in Kenya. Journal of Agriculture and Food Technology. 2011;1(9):153–178.

27. Akande O. A., Nakimbugwe D., Mukisa I. M. Optimization of extrusion conditions for the production of instant grain amaranth‐based porridge flour. Food Science & Nutrition. 2017;(5):1205–1214. DOI: https://doi.org/10.1002/fsn3.513

28. Schmid V., Mayer-miebach E., Behsnilian D., Briviba K., Karbstein H. P., Emin M. A. Enrichment of starchbased extruded cereals with chokeberry (Aronia melanocarpa) pomace: Influence of processing conditions on techno-functional and sensory related properties, dietary fibre and polyphenol content as well as in vitro digestibility. LWT – Food Science and Technology. 2021;154(4):112610. DOI: https://doi.org/10.1016/j.lwt.2021.112610

29. Hirth M., Preiß R., Mayer-Miebach E., Schuchmann H. P. Influence of HTST extrusion cooking process parameters on the stability of anthocyanins, procyanidins and hydroxycinnamic acids as the main bioactive chokeberry polyphenols. LWT – Food Science and Technology. 2015;62(1-Part 2):511–516. DOI: https://doi.org/10.1016/j.lwt.2014.08.032

30. Sharikov A. Yu., Sokolova E. N., Amelyakina M. V., Polivanovskaya D. V., Serba E. M. The use of cranberries in extruded products ready for consumption. Khranenie i pererabotka sel'khozsyr'ya = Storage and Processing of Farm Products. 2022;(4):191–200. (In Russ.). DOI: https://doi.org/10.36107/spfp.2022.379