Intensification of extraction process through IVDV pretreatment from leaves and stems: Maximizing yields and assessing biological activities.

"Intensification of Vaporization by Decompression to the Vacuum" (IVDV) has initially emerged as a technology primarily employed for expanding and enhancing the texture of biological products. However, its recent applications have showcased significant promise in the realm of extracting bioactive molecules from various plant materials. In this context, optimization using response surface methodology was conducted to investigate the impact of IVDV pretreatment on the extractability of phenolic compounds from leaves and stems, as well as their biological activities.

Chemical Composition and Biological Activities of Stems Extracts Recovered Using , an Innovative Infrared Technology, Compared to Water Bath and Ultrasound.

Extraction of polyphenols from stems was conducted using ultrasound and infrared techniques, and compared to the conventional water bath method. Response surface methodology was used to analyse the effect of time, temperature, and ethanol percentage, as well as to optimize the three extraction methods. The highest phenolic content (81 mg GAE/g DM) and antioxidant activity (76% DPPH inhibition) were recorded with the extract obtained under the optimal conditions: 55 °C, 127 min, 48% (/) ethanol.

Multi-Step Biomass Fractionation of Grape Seeds from Pomace, a Zero-Waste Approach.

Grape seeds are the wineries' main by-products, and their disposal causes ecological and environmental problems. In this study seeds from the pomace waste of autochthonous grape varieties from Lebanon, Obeidi (white variety) and Asswad Karech (red variety) were used for a multi-step biomass fractionation. For the first step, a lipid extraction was performed, and the obtained yield was 12.

Intensification of Polyphenols Extraction from Leaves Using and Evaluation of Antibiofilm and Antibacterial Activities.

(1) Background: is a plant medicinally valued, and used in pharmacopeia to treat various diseases. No previous studies have been reported on leaf extracts using an IR-assisted technique; thus, this study aimed to intensify polyphenol extraction using , comparing it to the conventional water bath (WB) method. (2) Methods: Optimization of polyphenol extraction from leaves was conducted using Response Surface Methodology.

Effects of Soil Fertilization on Terpenoids and Other Carbon-Based Secondary Metabolites in Plants: A Comparative Study.

is an evergreen aromatic plant with important commercial interest as it contains numerous essential oils (composed of terpenoid compounds) and phenolic constituents (natural antioxidant compounds). This work aims at evaluating the concomitant effects of different inorganic and organic fertilization treatments and the subsequent increases in soil nutrient availability on terpenoids and other carbon-based secondary metabolites, e.g.

Current Bottlenecks and Challenges of the Microalgal Biorefinery.

Microalgae are increasingly considered as sources of renewable feedstocks for industrial production, and microalgae production now focuses on the multiproduct microalgal biorefinery. However, such a biorefinery presents several bottlenecks that are mainly associated with downstream processes. This reduced downstream efficiency results from unsolved problems related to the culture strategy for the accumulation of different products - the protein versus lipid dilemma - and the dilute nature of the microalgal culture.