Publications by authors named "Jihane Rahbani Mounsef"
A simple and fast experimental protocol for the extraction of xanthophylls from microalga .
Prep Biochem Biotechnol
February 2022
This study aimed to optimize the key parameters of extraction methods and to increase the recovery yields of intact xanthophylls (violaxanthin, zeaxanthin, astaxanthin) from microalgae (). An effective, simple, and fast extraction protocol is described. It consists of a grinding pretreatment followed by a microwave-assisted extraction, using ethanol 90% as an environmentally preferable extraction solvent.
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- The microalgae treatment system is a sustainable method for treating wastewater, but heavy metals can hinder its effectiveness.
- Researchers tested the toxicity of heavy metals (Ni, Cu, Al, Hg, Pb) on 20 microalgae strains, finding Ni and Cu to be the most harmful.
- A tolerant strain from the Phacus genus was identified, capable of thriving and removing significant amounts of Ni, Al, and Pb from a mixed metal solution, achieving removal rates of 66.67%, 64.28%, and 79.17% respectively.
The aeration is a key factor for Bacillus thuringiensis growth, sporulation and δ-endotoxins production. The objective of our work was to study the effect of aeration on the fermentation kinetics of Bacillus thuringiensis kurstaki (Btk), cultivated in a cereal milling byproduct (CMB) mono-component medium, in order to improve the δ-endotoxins productivity. Aeration conditions were systematically characterized by the volumetric mass transfer coefficient KLa.
View Article and Find Full Text PDFA simple new method, for separating Bacillus thuringiensis crystals from spores and cell debris, is described. The developed purification method uses hexane and low speed centrifugation and does not require any expensive material or reagents.
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