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The indicator medium contained 0.67% (w/v) Difco Bacto Yeast Nitrogen Base without amino acids; 15.0% (w/v) glucose; 1.0% (w/v) L-malic acid and 0.0022% (w/v) bromocresol green. These components were combined in 2 x solution. The pH was adjusted to 3.8 with KOH. This solution and an equal volume of a 4% agar solution were autoclaved separately at 121~ for 15 rain. The two solutions were mixed before plates were poured. ÇëÎÊÕâ¸öÅàÑø»ùÔõôÅäÖÃѽ£¿pH±È½ÏµÍ£¬Ïȵ÷½ÚÁËpHµ½3.8£¬¼ÓÈëÁË4%µÄÇíÖ¬Ö±½ÓÅäµÄ£¬µ«ÊÇЧ¹û²»ºÃ£¬ÅàÑø»ù·ÅÖþÃÁ˻ῪÁÑ¡£Õâ¸öÎÄÏ×ÖÐ˵ÊÇÒª·Ö¿ªÅäÖ㬵«ÊÇÇíÖ¬ÄÇÒ»²¿·ÖûÓÐ×¢Ã÷µ÷½ÚpH£¬ÄÇô»ìµ½Ò»ÆðpH»¹ÊÇ»á±ä£¬Èç¹û°ÑÇíÖ¬ÄDz¿·ÖÒ²µ÷½ÚpHµ½3.8£¬Í¬ÑùÔÚ¸ßÎÂÏ»ᷢÉúË®½â£¬µ¼ÖÂÇíÖ¬²»Äý¹Ì¡£´ó¼Ò¶¼ÊÇÔõôÅäÕâÖÖÅàÑø»ùµÄÄØ£¿ |
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