PHYTOCHEMICAL STUDY OF QUINCE FRUITS

352 Volume 5, Issue 10: Special Issue (EJAR) ISSN: 2181-2020 MPHAPP THE 6TH INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE “MODERN PHARMACEUTICS: ACTUAL PROBLEMS AND PROSPECTS” TASHKENT, OCTOBER 17, 2025 in-academy.uz PHYTOCHEMICAL STUDY OF QUINCE FRUITS Azhibay A.E. Umirzakova U.N. Torlanova B.O. JSC« South Kazakhstan Medical Academy», Shymkent city, Republic of Kazakhstan e-mail: [email protected] https://doi.org/10.5281/zenodo.17337465 Relevance: Quince (Cydonia oblonga) is a valuable source of vitamins, microand macroelements, as well as phenolic compounds and flavonoids. The biologically active substances of quince exhibit antioxidant, anti-inflammatory, and tonic effects, making it a promising object of phytochemical research. Studying the chemical composition of quince fruits is relevant for substantiating their application in medicine, dietology, and the food industry. Aim of the research: Phytochemical study of quince fruits (Cydonia oblonga) with the determination of water-soluble vitamins, microelements, and phenolic compounds. Materials and methods: The research object was ripe quince fruits (Cydonia oblonga). The following methods were applied: -high-performance liquid chromatography (HPLC) - to determine the vitamin content; -atomic absorption spectroscopy (AAS) - to study the microelement composition; -spectrophotometry-for quantitative analysis of phenolic compounds and flavonoids. All analyses were carried out in triplicate, and the results were statistically processed. Results: Quince fruits were found to have a high content of vitamin C (up to 15 mg/100 g) and smaller amounts of B vitamins. -Microelements identified: iron (Fe), zinc (Zn), manganese (Mn), and copper (Cu). -The presence of flavonoids and phenolic compounds with pronounced antioxidant activity was established. Conclusions: Conducting a phytochemical study of quince fruits (Cydonia oblonga), I became convinced of their rich composition. I was impressed by the high content of vitamins, microelements, and phenolic compounds. This confirms the unique properties of quince and substantiates its use in medicine and dietology as a valuable natural source of biologically active substances.