Antimicrobial and quorum sensing inhibitory activity of epiphytic bacteria isolated from the red alga .

is a red alga that is commonly utilized in the Philippines as food and as a source of high-value natural products for industrial applications. However, there are no studies regarding the microbial community associated with and its potential applications. This study aimed to isolate and identify the epiphytic bacteria of and determine their antimicrobial and quorum sensing inhibitory (QSI) effects.

Microstructure and molecular vibration of mannosylerythritol lipids from Pseudozyma yeast strains.

This work highlights microstructure and molecular vibration of mannosylerythritol lipids (MELs) from Pseudozyma aphidis B1 and Pseudozyma hubeiensis TS18 strains collected from brown algae and mangrove sediments. The scanning electron microscopy (SEM) shows the elongated structures with polar budding in the cells of B1 and TS18 yeast strains. The high-resolution transmission electron microscopy (HRTEM) identifies large lipid bodies that contain MELs confirmed by the anthrone test and thin layer chromatography.