Influence of oleaster powder on the quality of mechanically aerated yeast-free bread

This study investigates the effect of oleaster (Elaeagnus angustifolia L.) powder, with and without the stone, on the quality of mechanically aerated yeast-free bread produced using mechanical dough aeration, deep-freezing of dough semi-finished products, and subsequent microwave thawing before baking. The study is relevant to the growing demand for bakery products with enhanced nutritional value and to advances in frozen dough technologies that reduce dough preparation time while ensuring consistent quality of the final products. The aim of the research was to evaluate the influence of different levels of oleaster powder, with and without the stone, on the rheological, sensory, physicochemical, and nutritional properties of mechanically aerated yeast-free bread and to determine the optimum formulation. Modern analytical methods were employed, including the evaluation of dough rheological properties using the Mixolab and CT-2 Structurometer, sensory assessment, determination of physicochemical characteristics, chemical composition, vitamin and mineral contents, and mathematical modeling of the experimental data. The results demonstrated that incorporating oleaster powder improved the nutritional and biological value of bread, enhanced the structural–mechanical properties of the dough, and increased the contents of vitamins and minerals. The best overall performance was achieved with the formulation containing 20% stone-free oleaster powder, which provided the optimum combination of crumb porosity, specific volume, sensory quality, and chemical composition. The developed formulation and processing technology can be applied in the industrial production of functional bakery products and frozen mechanically aerated yeast-free dough semi-finished products.

1. F. Ebrahimi, B. Ghanbarzadeh, H. Hami-shehkar Nutritional composition, phytochemical properties and functional applications of Elaeagnus angustifolia L.: A review // Food Reviews International. – 2022. – Vol. 38, No. 8. – P. 1527–1548.

2. Y. Shahbazi, N. Shavisi Functional and nutritional properties of Elaeagnus angustifolia fruit and its potential application in food products: A review // Journal of Food Measurement and Characterization. – 2023. – Vol. 17. – P. 2817–2832.

3. A. Ghorbani, M. Esmaeilizadeh Pharmacological properties and nutritional value of Elaeagnus angustifolia: A comprehensive review // Journal of Herbal Medicine. – 2020. – Vol. 22. – Article 100345.

4. M. Gómez, L.C. Gutkoski, Á. Bravo-Núñez Understanding Whole-Wheat Flour and Its Effect in Breads: A Review // Comprehensive Reviews in Food Science and Food Safety. – 2020. – Vol. 19, No. 6. – P. 3241–3265. – DOI: 10.1111/1541-4337.12625.

5. N. Nezamdoost-Sani, M. Asghari-Jafarabadi, J. Mohtadinia Influence of Elaeagnus angustifolia Flour on the Organoleptic and Physicochemical Charac-teristics of Bread (Lavash) // International Journal of Food Engineering. – 2018.

6. S. Boudraa, L. Hambaba, M.N. Zidoune Impact of microwave-grill-drying (MWGD) on func-tional properties of berry Russian olive (Elaeagnus angustifolia L.) // Journal of Bioenergy and Food Science. – 2020. – Vol. 7. – DOI: 10.18067/jbfs.v7i1. 275.

7. S. Boudraa, L. Hambaba, M.N. Zidoune Effect of microwave-grill drying on total phenolic content and antioxidant activity of Russian olive (Elaeagnus angustifolia L.) fruits // Journal of Food Processing and Preservation. – 2021. – Vol. 45, No. 6. – e15552.

8. S. Sabouri, A.H. Rad, S.H. Peighambardoust, R.B. Fathipour, J. Feshangchi, F. Ansari, H. Pourjafar The Oleaster (Elaeagnus angustifolia): A Com-prehensive Review on Its Composition, Ethnobotanical and Prebiotic Values // Current Pharmaceutical Biotechnology. – 2021. – Vol. 22, No. 3. – P. 367–379. – DOI: 10.2174/1389201020666191107112243.

9. M.A. Azmat, A. Shahzad, M. Shaban, A.A.Khan, S. Shakoor Exploring the Multifaceted Potential of Elaeagnus angustifolia L.: A Com-prehensive Review of Its Nutritional, Pharmacological, and Environmental Significance // Food Science & Nutrition. – 2025. – Vol. 13, No. 7. – e70486. – DOI: 10.1002/fsn3.70486.

10. S. Yang, S. Jeong, S. Lee Elucidation of rheological properties and baking performance of frozen doughs under different thawing conditions // Journal of Food Engineering. – 2020. – Vol. 284. – Article 110084. – DOI: 10.1016/j.jfoodeng.2020.110084.

11. S. Yang, S. Jeong, S. Lee Elucidation of rheological properties of frozen non-fermented dough with different thawing treatments: The view from protein structure and water mobility // Journal of Cereal Science. – 2022. – Vol. 108. – Article 103572. – DOI: 10.1016/j.jcs.2022.103572.

12. A.C. Arias, C.A.F. Bobadilla, C.M. Zuluaga Domínguez Cryoprotectants for Frozen Dough: A Review // Food Biophysics. – 2024. – Vol. 19. – P. 18–28. – DOI: 10.1007/s11483-023-09791-w.

13. H. Zhang, H. Fan, X. Xu, D. Xu Deterioration mechanisms and quality improvement methods in frozen dough: An updated review // Trends in Food Science & Technology. – 2024. – Vol. 143. – Article 104251. – DOI: 10.1016/j.tifs.2023.104251.

14. F. Zhang, J. Guo, P. Li, F. Zhao, X. Yang, Q. Cheng, J.S. Elmore, P. Wang, C. Cui Effects of different thawing methods on physical and physicochemical properties of frozen dough and quality of corresponding steamed bread // Food Chemistry. – 2024. – Vol. 447. – Article 138932. – DOI: 10.1016/j.foodchem.2024.138932.

15. GOST 26574–2017. Muka pshenichnaya khlebopekarnaya. Tekhnicheskie usloviya [Bakery wheat flour. Specifications]. – Moscow: Standartinform, 2019. – 14 p. (in Russian).

16. GOST R 51574–2018. Sol’ pishchevaya. Obshchie tekhnicheskie usloviya [Food grade salt. Specifications]. – Moscow: Standartinform, 2018. (in Russian).

17. GOST 908–2004. Kislota limonnaya monogidrat pishchevaya. Tekhnicheskie usloviya [Citric acid monohydrate for use in foodstuffs. Specifications]. – Moscow: Standartinform, 2006. (in Russian).

18. GOST 27842–88. Khleb iz pshenichnoy muki. Tekhnicheskie usloviya [Wheat bread. Specifications]. – Moscow: Izdatelstvo standartov, 1989. (in Russian).

19. GOST 21094–75. Khleb i khlebobulochnye izdeliya. Metod opredeleniya vlazhnosti [Bread and bakery products. Method for determination of moisture]. – Moscow: Izdatelstvo standartov, 1975. (in Russian).

20. GOST 5669–96. Khlebobulochnye izdeliya. Metod opredeleniya poristosti [Bakery products. Method for determination of porosity]. – Moscow: Izdatelstvo standartov, 1997. (in Russian).

21. GOST 5670–96. Khlebobulochnye izdeliya. Metody opredeleniya kislotnosti [Bread, rolls and buns. Methods for determination of acidity]. – Moscow: Izdatelstvo standartov, 1997. (in Russian).