Additive manufacturing of metal oxides possesses immense potential in micro-optics, enabling intricate glass and ceramic structures at the highest definition. However, a limited range of inorganic–organic monomeric precursors restrains its advancements. New inorganic–organic precursors should be developed to unlock optical functionalities to manipulate light in the third dimension.
The mysteries of chemical structures and properties of lignin are gradually being unveiled. In parallel, lignin is gaining ground as a versatile resource for the development of stimuli-responsive materials with environmentally friendly, high-performance, and multifunctional characters. This review focuses on synthesis and mechanisms of lignin-based stimuli-responsive materials, highlighting the chemical structures linked to responses to various different stimuli, such as pH and temperature. We also highlight applications of these materials in drug carriers, bioimaging, shape memory, strain sensors, and substance detection, with the objective to showcase the untapped potential of lignin, challenging the prevailing notion that lignin is merely a by-product of the pulp industry. Finally, we identify challenges and propose future directions for the development of lignin-based stimuli-responsive materials.
It is challenging to convert a non-methylotrophic yeast to a synthetic methylotroph. In a recently described new method, Nielsen, Keasling, Chen, Bai, and coworkers show that Saccharomyces cerevisiae can be engineered to grow solely on methanol, which potentially emerges as a promising platform for one-carbon (C1)-based biomanufacturing.
Addressing the burgeoning global obesity crisis, Zhao et al. recently presented innovative developments in celastrol synthesis, a potent anti-obesity agent. They unified plant biochemistry, metabolic engineering, and chemistry to map an effective celastrol biosynthetic path in yeast. The study emphasizes new opportunities for the commercial production of celastrol, revealing future potential for specialized metabolite production.
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