Sinapic Acid

Development and evaluation of novel bio-based stabilizers including benzoates, cinnamates and Ph propionates are presented, focusing on long-term thermal and UV stabilization performance of polypropylene.The synthesized structures include benzoates, cinnamates and Ph propionate esters.Long-term thermal studies indicated that Ph propionates provided superior stability compared to other structures.The anal. of carbonyl indexes during accelerated aging showed lower values for Ph propionate additives too, highlighting their effective stabilization capabilities.Double-substituted phenols outperformed mono-substituted ones in mech. property assessments.Benzoates seem to be the only derivatives to provide some UV stability.Overall, the results suggest that the synthesized bio-based antioxidants could serve as promising alternatives to conventional stabilizers, offering potential benefits for more sustainable applications in various industries.

The fruit set in the Cucurbitaceae family is a critical determinant of fruit production and development. However, limited information is available regarding the regulatory mechanisms relating to pumpkin fruit sets. To elucidate the interplay between pumpkin fruit setting and endophytic microorganisms, we conducted a comparative analysis of the endophytic microbiota and metabolite profiles in the stems of naturally pollinated and non-pollinated pumpkin using microbiome and untargeted metabolomics approaches. The results showed that both the alpha- (reduced by 18.33∼21.88 % and 16.63∼24.08 %) and beta-diversities (reduced by 12.40 % and 40.00 %) of endophytic microorganisms (bacteria and fungi) in stems of pollinated pumpkins were significantly reduced which were significantly reduced compared to those in non-pollinated pumpkins. Meanwhile, in comparison with pollinated pumpkins, the deficiency of endophytic bacterial genera that regulate endogenous hormones and metabolites, such as Pantoea, Staphylococcus, Brevundimonas, Tatumella, and Gluconobacter, and the weak metabolic pathways, viz, the relatively stable homeostasis, such as flavone and flavonol biosynthesis, alanine, aspartate, and glutamate metabolism, and phenylpropanoid biosynthesis in stems of non-pollinated pumpkin were important reasons why fruits could not bear fruits without pollination. All above results reveal that endophytic microorganisms are closely related to the growth and development of pumpkins, also, the endophytic microbial community structures in stems of pumpkins can be reshaped by man-made measures, such as pollination.