Publications by authors named "Carem Gledes Vargas-Rechia"

This study focused on developing electrically stimulable hyaluronic acid (HA) films incorporating lipid nanoparticles (NPs) designed for the topical administration of lipophilic drugs and macromolecules. Based on beeswax and medium-chain triglycerides, NPs were successfully integrated into silk fibroin/chitosan films containing HA (NP-HA films) at a density of approximately 10 NP/cm, ensuring a uniform distribution. This integration resulted in a 40% increase in film roughness, a twofold decrease in Young's modulus, and enhanced film flexibility and bioadhesion work.

View Article and Find Full Text PDF

β-Glucosidases are a limiting factor in the conversion of cellulose to glucose for the subsequent ethanol production. Here, β-glucosidase production by was optimized using Composite Central Designs and Response Surface Methodologies from a medium designed. The coefficient of determination ( ) was 0.

View Article and Find Full Text PDF

Aspergillus thermomutatus produces an extracellular β-D-fructofuranosidase when cultured in Khanna medium with sucrose as additional carbon source at 30°C under agitation for 72 hr. Addition of glucose and fructose in the culture medium affected the production of the enzyme negatively. The optimum hydrolytic activity was achieved at 60°C and pH 5.

View Article and Find Full Text PDF
Article Synopsis
  • The studied fungus is essential for breaking down plant cell wall polysaccharides and is a key player in producing cellulase enzymes for second-generation bioethanol production.
  • Researchers identified a novel sugar transporter capable of transporting various sugars; its deletion hindered the fungus's growth and sugar uptake.
  • The findings indicate that this transporter affects the expression of important enzymes (cellulases and xylanases) in the presence of sugarcane bagasse, suggesting its role in cellulose degradation.
View Article and Find Full Text PDF

In addition to adenosine triphosphate (ATP) production, mitochondria have been implicated in the regulation of several physiological responses in plants, such as programmed cell death (PCD) activation. Salicylic acid (SA) and reactive oxygen species (ROS) are essential signaling molecules involved in such physiological responses; however, the mechanisms by which they act remain unknown. In non-photosynthesizing tissues, mitochondria appear to serve as the main source of ROS generation.

View Article and Find Full Text PDF