HIỆU QUẢ CẢN TIA UVB CỦA MỘT SỐ CHẤT HỮU CƠ VÀ VÔ CƠ=EFFECTIVENESS OF SOME ORGANIC AND INORGANIC AGENTS IN PREVENTING UVB

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Tác giả: Thị Yến Mai Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2024

Mô tả vật lý: tr.189 - 195

Bộ sưu tập: Metadata

ID: 480381

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Sản phẩm chăm sóc da với mục tiêu chống tia tử ngoại luôn được quan tâm nhằm hạn chế các tác hại lão hóa của ánh sáng mặt trời gây ra cho da, đặc biệt hiện nay người tiêu dùng có xu hướng tìm kiếm các sản phẩm có nguồn gốc tự nhiên. Trong nghiên cứu này, khả năng cản tia UVB của một số chất hữu cơ và vô cơ được phân tích đánh giá thông qua quang phổ truyền qua của chúng ở dải bước sóng kích thích 250 nm-400 nm. Các loại dầu hạt như dầu hạnh nhân, dầu hạt lanh được biết đến là chứa nhiều axit béo có lợi cho da được nghiên cứu khả năng chống nắng. Các loại bột thảo mộc như bột nghệ, bột trà xanh, bột thuốc bắc (gồm bột bạch chỉ, bột bạch truật, bột bạch phục linh) với tác dụng chống oxy hóa tốt cũng được khảo sát. Bên cạnh đó, hai loại oxit được biết đến với khả năng chống nắng tốt là TiO2 và ZnO cũng được khảo sát để so sánh. Các nghiên cứu nhằm tìm ra vật liệu thích hợp cho phát triển sản phẩm kết hợp chống nắng và dưỡng da. Kết quả cho thấy các mẫu dầu hạt như dầu hạt lanh và dầu hạnh nhân không có khả năng cản nắng tốt bằng các mẫu bột. Trong các mẫu bột, bột thuốc bắc đã thể hiện khả năng cản nắng tốt nhất, với chỉ số SPF cao nhất, tương đương với khả năng cản nắng của bột vô cơ TiO2.ZnO. Điều này cho thấy tiềm năng của việc sử dụng bột thuốc bắc trong phát triển sản phẩm kết hợp chống nắng và dưỡng da.Skincare products for protecting against ultraviolet radiation are always of interest to limit the aging effects of sunlight on the skin, especially nowadays consumers tend to look for products with natural origin. In this study, the ability of some organic and inorganic substances to block UVB was analyzed and evaluated through their transmittance spectra at the excitation wavelength range of 250 nm-400 nm. Seed oils such as almond oil and flaxseed oil are known to contain many skin-beneficial fatty acids that have been studied for their sun protection properties. Herbal powders such as turmeric powder, green tea powder, and Chinese medicine powder (Angelica Dahurica powder, Atractylodes Macrocephala Extract powder, Atractylodes Macrocephala Extract powder) with good antioxidant properties were also investigated. Besides, two oxides known for their good sun protection, TiO2 and ZnO, were also included in the research for comparison. The research aims to find suitable materials for developing products that combine sun protection and skin care. The results show that the seed oils such as flaxseed oil and almond oil block UV radiation worse than herbal powder samples. Among the powder samples, Chinese medicine powder shows the best sun blocking ability, with the highest SPF index, equivalent to the sun blocking ability of inorganic TiO2.ZnO powders. This shows the potential of using Chinese medicine powder in developing products that combine sun protection and skincare.

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