从粉红木宁制备浅色植物防晒
Xin Chen1, Xiaojing Li1, Yuting Xiao1
1School of Chemistry and Chemical Engineering, State Key Laboratory of Advanced Papermaking and Paper-based Materials, South China University of Technology, Guangzhou, 510640, China.
ChemSusChem
|April 14, 2025
概括
从树中提取了一种新鲜的粉红色红素 (PL),为护肤提供紫外线阻解决方案. 封装PL在防晒中实现了高太阳保护因子 (SPF) 值,显示出出色的光稳定性和生物相容性.
科学领域:
- 生物材料科学 生物材料科学
- 聚合物化学 聚合物化学
- 化品科学 化品科学
背景情况:
- 一种天然聚合物 - - 宁,对护肤中的紫外线阻应用有前途.
- 原生红素的深色限制了其在化品配方中的使用.
- 开发更浅色的素衍生物对于更广泛的应用至关重要.
研究的目的:
- 在温和的条件下从树中提取和表征粉红色红素 (PL).
- 开发PL封装的防晒剂,用于广泛的紫外线保护.
- 评估基于PL的防晒的有效性,光稳定性和生物相容性.
主要方法:
- 从树中轻度提取粉红色红素 (PL),然后进行表征 (分子量,PDI,白度指数).
- 一步超声波化以封装PL内的化学防晒活性物质.
- 使用PL囊的防晒的配方以及防晒因子 (SPF),白度指数和光稳定性的评估.
主要成果:
- 成功提取粉红色红素 (PL),保留原生结构,白度指数为-25.
- 开发了PL囊 (平均直径为180纳米),具有广谱紫外线吸收.
- 使用10%和15%的PL囊制成的防晒达到SPF值分别为130+和180+,白度减少最小.
- 基于PL的防晒显示出出色的光稳定性,在7.5小时的紫外线照射后,SPF仅下降18%.
- PL囊显示出良好的生物相容性.
结论:
- 粉红色素 (PL) 是防晒中传统紫外线过器的一个可行的,光稳定的替代品.
- PL封装技术增强了紫外线的吸收,并提供高的SPF值.
- 开发的PL囊为先进的护肤和紫外线保护产品提供了有前途的潜力.
相关概念视频
Masonry in Cold and Hot Weather Conditions
In cold weather, masonry construction requires specific precautions to ensure mortar does not freeze before curing, as this can significantly weaken its strength and watertightness. Mortar temperature should be maintained between 60°F and 80°F to support proper hydration and curing. Below 40°F, mortar water must be heated, but should not exceed 120°F as high temperatures can reduce mortar's compressive and bond strength.
Other key practices include keeping masonry units and sand dry and...
Other key practices include keeping masonry units and sand dry and...
Seasoning of Wood
Seasoning of wood is a crucial process aimed at reducing and stabilizing the moisture content within the wood to prevent future shrinkage, structural damage, or aesthetic issues once the wood is used in construction. Wood naturally swells when it absorbs moisture and contracts as it dries.
Achieving equilibrium moisture content is the goal of seasoning; this is the point where the wood's moisture content stabilizes to align with the moisture levels of the surrounding environment. Proper...
Achieving equilibrium moisture content is the goal of seasoning; this is the point where the wood's moisture content stabilizes to align with the moisture levels of the surrounding environment. Proper...


