SELECTION OF THE OPTIMAL EXTRACTION MODULE IN THE DEVELOPMENT OF THE TECHNOLOGY OF PRODUCTION OF BLACK AND GREEN TEA EXTRACTS (CAMELLIA SINENSIS) WITH HIGH INDICATORS OF ANTIOXIDANT ACTIVITY

UDK 663.958.8

  • Dinara Fanisovna Ignatova Samara State Technical University Email: dinara-bakieva@mail.ru
  • Marianna Sergeevna Voronina Samara State Technical University Email: marianna419@rambler.ru
  • Nadezhda Viktorovna Makarova Samara State Technical University Email: makarovanv1969@yandex.ru
DOI_disc_logo https://doi.org/10.14258/jcprm.20240112168
Keywords: antioxidant activity, black tea, green tea, phenols, flavonoids, extraction module

Abstract

It is known that various factors of extraction, such as the type of solvent, temperature, time, solvent system, degree of grinding of raw materials, extraction modulus significantly affect the level of antioxidant properties of plant products. The aim of our study was to select the optimal extraction module for two types of tea (Camellia sinensis), to obtain extracts with high values of total soluble solids, phenols, flavonoids, tannins, antiradical activity according to the DPPH method, restoring strength according to the FRAP method. The objects of the study were extracts of two types of tea obtained using water, with a grinding degree of 0.5 mm, an extraction temperature of 40–50 °C, an extraction time of 24 h, and various versions of extraction modules 1 : 10, 1 : 15, 1 : 20. The indicator of the content of dry soluble substances in black and green tea reaches high values when using the extraction module 1 : 10 (9% and 9.6%, respectively), the maximum amount of phenolic substances (3139 mg (HA) / 100 g and 2045 mg (HA) / 100 g), flavonoids (1644 mg (K) / 100 g and 718 mg (K) / 100 g), tannins (123 mg catechin / 100 g and 56 mg catechin / 100 g) were extracted from black and green tea extracts at extraction module 1 : 10. The highest index of restorative power was observed in black and green tea extracts with an extraction modulus of 1 : 10 (8.73 mmol Fe2+ / kg and 15.84 mmol Fe2+ / kg). At an extraction modulus of 1 : 10, black and green tea extracts exhibited the least antiradical activity (Ec50 = 0.39 mg / cm3 and Ec50 = 0.69 mg / cm3). Thus, we can recommend the value of the module 1 : 10 as the most acceptable for obtaining extracts from black and green tea with a high level of the studied parameters.

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Author Biographies

Dinara Fanisovna Ignatova, Samara State Technical University

candidate of technical sciences, associate professor

Marianna Sergeevna Voronina, Samara State Technical University

candidate of technical sciences, associate professor

Nadezhda Viktorovna Makarova, Samara State Technical University

doctor of chemical sciences, professor

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Published
2024-03-06
How to Cite
1. Ignatova D. F., Voronina M. S., Makarova N. V. SELECTION OF THE OPTIMAL EXTRACTION MODULE IN THE DEVELOPMENT OF THE TECHNOLOGY OF PRODUCTION OF BLACK AND GREEN TEA EXTRACTS (CAMELLIA SINENSIS) WITH HIGH INDICATORS OF ANTIOXIDANT ACTIVITY // chemistry of plant raw material, 2024. № 1. P. 338-346. URL: http://journal.asu.ru/cw/article/view/12168.
Issue
No 1 (2024)
Section
Technology

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