Similar to findings on furan derivatives, microbial metabolism of phenolic aldehydes is supported by previous findings in recombinant E. coli, the closely related enteric bacterium Klebsiella pneumonia, and S. cerevisiae [ 97, 115- 117].
The appreciable results were obtained from the previous biological studies, specifically, anti-microbial activity for the derivatives of more microbial active compounds, which encouraged in the present research work to test their cytotoxicity against a human cancer cells (HeLa), Supt1 cell lines.
Fluorescence spectroscopy and electron microscopy analyses indicated that RL and its derivatives killed microbial cells by permeabilizing the cell membrane and damaging membrane integrity.
Towards a global objective to produce chemical derivatives by microbial processes, this work dealt with a metabolic engineering of the yeast Saccharomyces cerevisiae for glycerol production.
Intakes of total dry matter (DM), digestible crude protein (DCP) and digestible organic matter (DOM), DOM, DCP, energy concentration, N retention, purine derivatives excretion, microbial protein synthesis (P < 0.01) and propionate (P < 0.05) increased linearly with increasing level of TDS.
Compared to the Control diet, CP digestibility was higher (P<0.05) in sheep fed MW and N intake, retained N, EE digestibility, urinary purine derivatives and microbial N yield were higher (P<0.05) in sheep fed diets, containing wormwood.
Microbial products or their derivatives can kill or inhibit the growth of susceptible pathogenic microbes (Willey et al. 2008).
For example, two studies have noted the formation of hydroxylated, oxygenated, and methoxy derivatives during microbial and fungal degradation of PAHs [ Wunder et al., 1997; Andersson et al., 2003].
The purine derivatives (PD) excretion, microbial purine absorption and microbial nitrogen supply (MNS g/day) linearly increased (P<0.001) as the level of RDN supplementation increased.
