Study on the Brill transition of polyamide 6 with different crystal forms using low- and high-frequency Raman spectroscopy.

Polyamide 6 (PA6) in its α and γ-forms was studied from 30 to 220 °C using Raman spectroscopy in the low- and high-wavenumber regions. Quantum chemical calculations were employed to assist with band assignments. In the low-wavenumber region, a peak at approximately 100 cm, attributable to a mixed mode of methylene lateral motion and amide group stretching, was observed.

Development of pullulan/gellan gum films loaded with astaxanthin nanoemulsion for enhanced strawberry preservation.

Innovative packaging materials are essential for preserving food, serving as a substitute for petroleum-based options. In this study, biofilms consisting of pullulan and gellan gum which incorporates astaxanthin nanoemulsion were prepared to extend the shelf-life of strawberries. Hydrophobic deep eutectic solvents (DES) were used as solvents to extract natural astaxanthin from Haematococcus pluvialis.

The processing of shaking and standing improves the taste quality of summer black tea.

Shaking and standing (SS) enhances the aroma intensity and quality of black tea (BT). However, its contribution to the taste remains unknown, and the interaction mechanism between the aroma and taste perception of black tea is also undisclosed. Here, the metabolomics and sensory evaluation-assisted flavor analysis were employed to investigate the changes in non-volatiles induced by SS, and the interaction mechanism between aroma and taste perception.

O-GlcNAcylated FTO promotes m6A modification of SOX4 to enhance MDS/AML cell proliferation.

Fat mass and obesity-associated protein (FTO) was the first m6A demethylase identified, which is responsible for eliminating m6A modifications in target RNAs. While it is well-established that numerous cytosolic and nuclear proteins undergo O-GlcNAcylation, the possibility of FTO being O-GlcNAcylated and its functional implications remain unclear. This study found that a negative correlation between FTO expression and O-GlcNAcylation in patients with myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML).

Directed evolution of diacylglycerol acyltransferases 2 promotes lipids and triglyceride accumulation.

Triacylglycerol (TAG) is a major component of plant-neutral lipids. Diacylglycerol acyltransferase 2 (DGAT2) plays an important role in plant oil accumulation by catalyzing the final step of the Kennedy pathway. In this study, ten DGAT2 sequences were originating from different oil crops into the TAG-deficient yeast strain H1246, to compare their enzyme activity of oil synthesis and filter out potential amino acid residue sites for directed evolution.