A design of Tetrastigma hemsleyanum's flavonoid loaded polyvinylpyrrolidone nanoparticles for improving its bioavailability and biological activities.

Flavonoids in plant extracts exhibit significant biological activities but are limited by their low bioavailability. This research aimed to improve the functional properties by synthesizing polyvinylpyrrolidone (PVP) nanoparticles using flavonoids derived from T. hemsleyanum.

Preparing a Phytosome for Promoting Delivery Efficiency and Biological Activities of Methyl Jasmonate-Treated Adventitious Root Extract (DMARE).

(1) Background: Methyl jasmonate-treated adventitious root extract (MeJA-DMARE), enriched with phenolics, has enhanced bioactivities. However, phenolics possess low stability and bioavailability. Substantial evidence indicates that plant extract-phospholipid complex assemblies, known as phytosomes, represent an innovative drug delivery system.

Composing functional food from agro-forest wastes: Selectively extracting bioactive compounds using supercritical fluid extraction.

Supercritical fluid extraction (SFE) employing carbon dioxide (SC-CO) is an efficient method to extract bioactive compounds from agro-forest wastes. These compounds maintain and/or improve food nutrition, safety, freshness, taste, and health and are employed as natural functional food components. To highlight the potential of this technology, we focus on the following current advances: (I) parameters affecting solubility in SFE (pressure, temperature, SC-CO flow rate, extraction time, and co-solvents); (II) extraction spectra and yield obtained according to proportion and composition of co-solvents; (III) extract bioactivity for functional food production.

Seasonal variation influences flavonoid biosynthesis path and content, and antioxidant activity of metabolites in Tetrastigma hemsleyanum Diels & Gilg.

Environmental conditions contribute to plant growth and metabolism. This study aimed to determine a suitable environment and climate for large-scale artificial cultivation of an endangered plant, Tetrastigma hemsleyanum, by investigating the seasonal variations influencing the flavonoid biosynthetic selectivity and antioxidant activity of its major metabolites. Under conditions of precipitation (2.