000			01514nam a2200205 4500
001			UPMIN-00000009211
005			20220921140844.0
040			_aDLC _cDLC _dupmin
041			_aeng
090			_aLG993.5 2000 _bB4 P34
100	1		_aPagaduan, Ivy Lorraine.
245	0	0	_aScreening, isolation and identification of mercury resistant bacteria at Apokon, Tagum City / _cIvy Lorraine Pagaduan
502			_aThesis (BS Biology) -- University of the Philippines Mindanao, 2000
300			_a20 leaves
260			_c2000
520			_aThis study aimed to find mercury-resistant bacteria which can be used as pollution indicators by cytochemical staining. Three mercury resistant bacterial isolates (A, B and C) were obtained from a ballmill dumpsite at Apokon, Tagum City. Isolates A and C were identified as Pseudomonas fluorescens while isolate B was identified as Pseudomonas putida. The isolates were grown in nutrient agar media containing varied concentrations of mercury (10, 15 and 20 ppm HgNO3). After three days, it was found that the number of bacteria that survived decreased with increasing HgNO3 concentration. However, as the end of the incubation period was reached, the number of bacteria increased. It was also observed that when bacteria have accumulated mercury, the surface of their colonies turned blue. The results indicate that the isolates possess some mechanisms of detoxifying the mercury-containing environment
658			_aUndergraduate Thesis _cBIO200, _2BSB
905			_aFi
905			_aUP
999			_c271 _d271