The dissertation on competition of a scientific degree of the candidate of technical sciences on a specialty 05.18.01 – Technology of bakery products, confectionery and food concentrates - National University of Food Technologies of the Ministry of Education and Science of Ukraine, Kyiv, 2020.
The dissertation is devoted to the improvement of the technology of protein whipped cream with the use of rowan or cranberry puree and gellan gum to increase the nutritional value, improve organoleptic characteristics, extension of shelf life.
Based on studies of the chemical composition of rowan berries, which grows in Transcarpathia, developed a technology for making puree of rowan berries, which involves freezing them at a temperature of minus 18… 20 ° C for 24… 36 hours, blanching the fruit with hot steam for 5 - 6 minutes, their wiping, deaeration of puree and its preservation at a temperature of 70-75 ° C.
The technology of preparation of cranberry puree has been developed, which provides blanching of berries with hot steam during 5 - 6 minutes, their wiping, deaeration of puree and its preservation at a temperature of 70-75 ° С.
Based on microbiological studies, it is proved that due to the content of sorbic acid rowan puree has antifungal activity against fungi of the genus Aspergillus and Penicillium, due to the content of benzoic acid cranberry puree has antifungal activity against yeasts of the genus Candida. Studies have confirmed the effectiveness of rowan and cranberry puree in creating a new range of finishing semi-finished products with high content of BAS and extended shelf life.
According to the results of experimental studies, it is recommended to use gellan gum in improving the technology of protein - whipping masses in order to increase their aggregate stability by increasing the elastic properties of the gel layers of the dispersion medium and reduce the cost of gelling agent. The proposed method of preparation of whipped cream with the addition of gellan gel, cranberry or rowan puree, which includes boiling sugar molasses syrup to MCSR 90 -92%, adding puree, boiling the recipe mixture to MCSR 85%, cooling the syrup to 80 ° C, adding 50% solution of gellan gum and beating the recipe mixture with egg white. Based on the optimization by the method of multifactorial experiment, it was found that in the preparation of whipped cream the optimal amount of gellan gum is 0.55%, the amount of cranberry puree - 26.0%, with dry matter content in sugar - molasses and cranberry syrup - 86%. It is proved that the amount of gelling agent in the new sample of cream is reduced by 2.4 times compared to the cream on agar. It was found that in the preparation of protein-whipped cream with the addition of rowan puree, the amount of gellan gum is 0.5%, the amount of puree - 20%, with a dry matter content in sugar - molasses and rowan syrup - 87%. It is proved that the amount of gelling agent in the new sample of cream "Rowan Souffle" is reduced by 2.6 times compared to the control sample of cream on agar.
Thermographic studies have shown that the use of gellan gum, cranberry puree or rowan in protein-whipped creams promotes the growth of tightly bound adsorption moisture, which allows them to be resistant to storage.
The recipes and technology of protein-whipping cream "Cranberry Souffle" and "Rowan Souffle" have been developed. Using them, a new range of combined flour confectionery products has been developed: custard “Eclair with cranberry”,biscuit roll “Miracle with cranberry”, combined biscuit cookie “Tender with rowan soufflé”, biscuit roll “Delicacy with rowan”. The developed technologies were tested and implemented at the enterprises of LLC "Monarch" in Lviv, PE "Links - 2" in Kyiv.
