Abstract
The present study aims to valorize the Typha australis stems, through second-generation bioethanol production using enzymatic hydrolysis and fermentation. The monitoring of fermentation kinetics parameters, such as pH, density, length of fermentation, and the Brix, indicated a great variability of these parameters during the fermentation process of the must with three Saccharomyces cerevisiae strains, such as Angel brand Thermal-tolerant alcohol active dry yeast, Angel brand super alcohol active dry yeast and Angel super alcohol active dry yeast in the presence of urea (CON2H4) used as a growth factor. The distillation of musts after fermentation has yielded ethanol extraction rate (% v / v at 20 ° C) between 4.95and 44.93 after fractional distillation. The best performance in ethanolic bioconversion was recorded with Angel brand super alcohol active dry yeast. This Saccharomyces cerevisiae strains could be used as effective ferments, in perspective of intensive production of second-generation bioethanol with Typha australis stems.
Highlights
Oximes are found in many bioactive molecules
The corresponding acetophenone oximes were obtained as solid materials in moderate to good yields (Scheme 1)
Academic Journal of Chemistry Most of the oxime derivatives being synthesized throughout this study showed inhibitory levels better than the two references
Summary
Oximes are found in many bioactive molecules. Oxime esters are important molecules for the synthesis of biologically active heterocyclic compounds [3]. Oxime esters have been used to cleavage DNA [4,5,6], herbicidal and antitumor activities [7, 8]. Unsymmetrical dioxime esters such as (2E,4E)-(4-imino O-benzoyl-2-imino Oterphthaloyl)pentane, (2E,4E)-(4-imino O-benzoyl-2-imino O-tosyl)pentane and (2E,4E)-(4-imino O-terphthaloyl-2imino O-tosyl)pentane have been synthesized and characterized [9]. One compound out of thirty synthesized oxime derivatives showed very good activity than the standard drug against aspergillus niger [10]
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