Tobacco imagery in popular films in China from 2001 to 2020: a declining trend.

Background: Exposure to tobacco imagery in films can result in tobacco use among adolescents and young adults. Efforts have been made to limit tobacco imagery in films in China. Our study investigates the level and trend of tobacco imagery in popular films in China from 2001 to 2020.

CoMFA and CoMSIA analysis of ACE-inhibitory, antimicrobial and bitter-tasting peptides.

Comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA) were applied to the ACE-inhibitory, antimicrobial, and bitter-tasting peptides. Predictive 3D-QSAR models were established using SYBYL multifit molecular alignment rule over a training set and a test set. The optimum models were all statistically significant with cross-validated coefficients (Q(2)) >0.

Simultaneous production of multi-functional peptides by pancreatic hydrolysis of bovine casein in an enzymatic membrane reactor via combinational chromatography.

Three bioactive peptides, angiotensin-converting enzyme-inhibitory peptides (ACEIPs), casein phosphopeptides (CPPs) and antimicrobial peptides (AMPs), were simultaneously prepared from casein by pancreatic hydrolysis via an enzymatic membrane reactor (EMR) and combinational chromatography. The reaction was performed at 37 °C and pH 8.0 for 3h followed by ultrafiltration.