Abstract: A permeable matrix is placed in the flow of thecombustible gas mixture in infrared (IR) burners for theorganization and stabilization of the surface combustion regime.A stable regime of surface combustion occurs on the surface ofthe permeable matrix. Until the combustion rate of the gas mixture near the surface exceeds the velocity of the gas mixture,thesurface combustion process is stable. If the combustion ratebecomes less than the velocity of the gas mixture, the combustionzone is separated from the surface and combustion passes intothe flare mode. In our previous works it is shown that theintroduction of recuperative elements into the design of the IRburner allows to increase the heat flow from the combustionproducts to the surface of the permeable matrix and to increasethe maximum value of the specific combustion power for thesurface combustion mode to values of more than 100 W/cm2.However, at such high values of the specific power of surfacecombustion, the surface temperature of

• Publication Date: 13-Jan-2019
• DOI: 10.15224/978-1-63248-166-5-03
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Abstract: This study was intended to investigate the saponin accumulation in the cell suspension culture of Ehretia asperula Zolliger et Moritzi. Soft, friable callus was initiated and grew well in MS medium supplemented with coconut water 10%,sucrose 30g/L, BA (6-benzylaminopurine) 0.1mg/L and 2,4-D(2,4-Dichlorophenoxyacetic acid) 2-2.5mg/L, with callusinduction rate 93.52% and 92.59%; callus diameter 18.33 and17.00mm; and growth index 3.44 and 3.38, respectively, after 24 days of culture. The callus cultured in MS (Murashige &Skoog) medium added with BA 0.1mg/L and 2,4D 2.0mg/Lwere chosen to initiate the cell culture. The cell culturingexperiments studied the effect of the agitating speed, the initialcell to medium ratio, and the addition of elicitor (methyljasmonate)/precursor (phenylalanine) on the cell proliferationand the saponin accumulation. The cell suspension proliferatedbest at 140 rpm of agitation (growth index 7.81) and 40% of theinitial cell to medium ratio (growth index 7.96). The

• Publication Date: 13-Jan-2019
• DOI: 10.15224/978-1-63248-166-5-04
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