000			01726nam a2200169Ia 4500
003			MX-MdCICY
005			20250625160133.0
040			_cCICY
090			_aB-15486
245	1	0	_aParaffinic hydrocarbons in the sulfate-reducing bacterium Desulfovibrio desulfuricans
490	0		_vChemical Geology, 3(2), p.155-160, 1968
520	3		_aLipid extracted from the anaerobic, sulfate-reducing bacterium, Desulfovibrio desulfuricans, constitutes 5-9 percent of the cellular weight. About 25 percent of the lipid consists of saturated hydrocarbons. A prominent series of normal paraffins (C25-C35)in the saturated hydrocarbon fraction show no particular preference for odd- or even-numbered carbon chains. Fatty acids of the cellular lipid are of shorter chain length and include palmitic (C16), stearic (C18)and oleic (C18), common fat components. There is thus no obvious precursor-product relationship between the fatty acids and the paraffins. In the sedimentary environment bacterial synthesis of hydrocarbons and other products may be of particular significance. Being last in the food chain, bacteria ultimately become the only organisms with biosynthetic capability and thus would be expected to effect organic matter modification as long as biospheric conditions exist. Theoretically, the effect is expected to increase with depth of sediments as the pattern of prior plant and animal synthesis is gradually displaced or'superimposed by bacterial synthesis.
700	1	2	_aDavis, J.B.
856	4	0	_uhttps://drive.google.com/file/d/1UfOrZogWDVc8nyqshekvmGnXo83wxEDc/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
942			_2Loc _cREF1
008			250602s9999 xx |||||s2 |||| ||und|d
999			_c49666 _d49666