YONG‘OQ MEVASI PO‘STIDAN BIOAKTIV TABIIY BO‘YOQ OLISH VA XOSSALARINI TADQIQ QILISH
Keywords:
walnut peel, natural dye, bioactive pigment, juglone, extraction, phenolic compounds, flavonoids, antioxidant activity, antimicrobial property, environmentally friendly dye, natural pigments, bioactive substance, plant waste, organic pigment.Abstract
This article presents the results of research on the technology for obtaining a bioactive natural dye from the peel of Juglans regia fruits, as well as the study of its physicochemical and biological properties. During the research, walnut peel raw material was dried, ground, and a natural pigment was extracted using the extraction method. The effects of solvent type, temperature, extraction time, and medium pH on the extraction process were investigated. It was determined that the obtained extract contained juglone, flavonoids, tannins, and other phenolic compounds. The color-forming and bioactive properties of juglone were analyzed. The research results showed that the obtained natural dye had a dark brown color, dissolved well in water and alcoholic media, and exhibited antioxidant and antimicrobial activity. In addition, the stability of the natural dye against light and temperature was evaluated. The obtained results demonstrate the possibility of producing environmentally safe, biologically active, and import-substituting natural pigments from local plant wastes.
References
1. Ahmedov O‘., To‘xtayev B. Tabiiy bo‘yoqlar kimyosi va texnologiyasi. – Toshkent: Fan va texnologiya, 2021. – 156 b.
2. Nurimuhamedov H., Qodirov A. O‘simlik xomashyolari asosida bioaktiv moddalar olish texnologiyasi. – Toshkent: O‘zbekiston, 2020. – 214 b.
3. Pervaiz M., Baig M.T., Saleem M. Natural dyes from walnut (Juglans regia) shell and husk for textile applications // Journal of Natural Fibers. – 2020. – Vol. 17, No. 5. – P. 645–654.
4. Rayimov Z.X., Temirova M.I., Kurbanova N.T. Tabiiy bo’yoqlar va ularning qo’llanilishi. Development of science. Ilmiy elektron jurnal. 2025/1. Volume:1. Yanvar 2025. 138-143 b.
5. Shahidi F., Ambigaipalan P. Phenolics and polyphenolics in foods, beverages and spices: Antioxidant activity and health effects // Journal of Functional Foods. – 2018. – Vol. 18. – P. 820–897.
6. Eshboyev R.X. Kimyoviy texnologiya asoslari. — Toshkent: Tafakkur, 2019. — 410 b.
7. Rayimov Z.X., Temirova M.I., Sultonova D.R. Mo‘yna sanoatida mahalliy o‘simlik oshlovchilarni qo‘llash. Development of science. Ilmiy elektron jurnal. 2025/1. Volume:1. Yanvar 2025. 133-137 b.
8. Саматов Ш.С., Рахимов Н.Т. Природные красители растительного происхождения и их свойства // Химическая технология. – 2021. – №4. – С. 27–34.
9. Касимов А.А. Технология получения натуральных красителей из растительного сырья. – Москва: Химия, 2018. – 240 с.
10. Иванов В.П., Сидоренко Л.А. Биологически активные компоненты зеленой оболочки грецкого ореха // Химия растительного сырья. – 2020. – №2. – С. 95–101.
11. Karimov U.B., Ismoilova D.R. Tabiiy pigmentlarning fizik-kimyoviy xossalari // Buxoro muhandislik-texnologiya instituti ilmiy axboroti. – 2021. – №2. – B. 62–68.
