胶原蛋白水解物在化妆品中的功能特性

研究了胶原蛋白经酶水解后所得产物的功能特性:吸水性、保水性、溶解性都得到提高;吸油性、起泡性和泡沫稳定性均明显下降。可根据不同分子量范围的胶原水解物的功能特性满足不同化妆品的不同需求。     

A modification for the calculation of water depth profiles in oil‐treated skin by in vivo confocal Raman microscopy

In this study, an extended calculation method for the determination of the water profiles in oil‐treated skin is proposed, which is based on the calculation of the ratio between the Raman band intensities of water (3350‐3550 cm^?1) and keratin Amide I at 1650 cm^?1. The proposed method is compared with the conventional method based on the ratio of the Raman band intensities of water (3350‐3550 cm^?1) and keratin at 2930 cm^?1. The conventional method creates artifacts in the depth profiles of the water concentration in oil‐treated skin, showing a lower amount of water in the upper and intermediate layers of the stratum corneum, which is due to the superposition of oil‐ and keratin‐related Raman bands at 2930 cm^?1. The proposed extended method shows no artifacts and has the potential to determine the water depth profiles after topical application of formulations on the skin.     

Absorption,Translocation and Adhering Capacities of Mycobacillin and Versicolin in Rice Plant Tissue

Mycobacillin adheres to the surface of seed or seedling but is not absorbed by rice plant tissue, whereas versicolin not only adheres to the surface but is also absorbed and subsequently translocated. The antibiotic re-extracted from the versicolin-treated plant tissue inhibits the growth of Helminthosporium oryzae. Thus mycobacillin is active only topically, while versicolin both topically and systemically.     

RACIST APPEARANCE STANDARDS AND THE ENHANCEMENTS THAT LOVE THEM: NORMAN DANIELS AND SKIN‐LIGHTENING COSMETICS

Darker skin correlates with reduced opportunities and negative health outcomes. Recent discoveries related to the genes associated with skin tone, and the historical use of cosmetics to conform to racist appearance standards, suggest effective skin‐lightening products may soon become available. This article examines whether medical interventions of this sort should be permitted, subsidized, or restricted, using Norman Daniels's framework for determining what justice requires in terms of protecting health. I argue that Daniels's expansive view of the requirements of justice in meeting health needs offers some support for recognizing a societal obligation to provide this kind of ‘enhancement,’ in light of the strong connections between skin tone and health outcomes. On balance, however, Daniels's framework offers compelling reasons to reject insurance coverage for skin‐lightening medical interventions, including the likely ineffectiveness of such technologies in mitigating racial health disparities, and the danger that covering skin‐lightening enhancements would undermine public support for cooperative schemes that protect health. In fact, justice may require limiting access to these technologies because of their potential to exacerbate the negative effects of racism.