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°®ÓëÓêÏÂ: ½ð±Ò+1 2012-05-24 21:37:29
°®ÓëÓêÏÂ: , Òª·ÒëÄã¾ÍŬÁ¦·†ª£¡ 2012-05-24 21:38:37
sltmac: ½ð±Ò-6, Î¥¹æ´æµµ, »úÆ÷·Ò룬³õ·¸£¬¿Û5½ð±Ò~~ 2012-05-25 07:58:24
°®ÓëÓêÏÂ: ½ð±Ò+1 2012-05-24 21:37:29
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sltmac: ½ð±Ò-6, Î¥¹æ´æµµ, »úÆ÷·Ò룬³õ·¸£¬¿Û5½ð±Ò~~ 2012-05-25 07:58:24
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Title: ¦Å-poly-lysine to produce a strain screening Abstract: collected many soil samples as a screening source system for a series of studies on the ¦Å-poly-L-lysine producing strain, and filter out the bacteria were separated and identified, to be isolated with higher yield of ¦Å-poly-lysine producing bacterium. Collection back soil samples were enriched and then used to inoculate the screen than the enrichment the easier to get bacteria. In this study, the SG medium (liquid) were enriched. SG medium with methylene blue and potassium dichromate for screening bacteria produce alkali transparent circle the size of the screening, rescreening Dr testing and methyl orange test, the elect are positive bacteria. Screening strains in shake flask fermentation test to detect the absorbance standard curve, select a higher yield of several bacteria. Screening out bacteria strains morphological characteristics, cultural characteristics and physiological and biochemical characteristics, 16SrDNA gene sequences for research and analysis. Control literature, to classify, filter out bacteria named. Key words: the ¦Å-polylysine; strain selection; strain identification; fermentation |
2Â¥2012-05-24 11:05:59
s771042285
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- ³æºÅ: 1663961
- ×¢²á: 2012-03-04
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3Â¥2012-05-24 12:43:37
s771042285
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- Ìû×Ó: 18
- ÔÚÏß: 12.3Сʱ
- ³æºÅ: 1663961
- ×¢²á: 2012-03-04
- ÐÔ±ð: MM
- רҵ: ÉúÎï´ó·Ö×ӽṹÓ빦ÄÜ
4Â¥2012-05-24 13:28:14
s771042285
Ìú³æ (³õÈëÎÄ̳)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 18.6
- Ìû×Ó: 18
- ÔÚÏß: 12.3Сʱ
- ³æºÅ: 1663961
- ×¢²á: 2012-03-04
- ÐÔ±ð: MM
- רҵ: ÉúÎï´ó·Ö×ӽṹÓ빦ÄÜ
5Â¥2012-05-24 17:09:37
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s771042285: ½ð±Ò+30, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2012-05-26 13:49:46
s771042285: ½ð±Ò+30, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2012-05-26 13:49:46
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ÌâÄ¿:¦Å-¶à¾ÛÀµ°±Ëá²úÉú¾úÖÖɸѡ Screening of ¦Å-polylysine Producing Strain ÕªÒª£º´Ó¶àµØ²É¼¯ÍÁÑù×÷Ϊ³õɸԴ£¬¶Ô¦Å-¶à¾ÛÀµ°±Ëá²úÉú¾úµÄɸѡÌåϵ½øÐÐÁËһϵÁеÄÑо¿£¬²¢¶Ôɸѡ³öÀ´µÄ¾úÖÖ½øÐзÖÀë¼ø¶¨£¬Äâ·ÖÀë³ö¾ßÓнϸ߲úÁ¿µÄ¦Å-¶à¾ÛÀµ°±Ëá²úÉú¾ú¡£ Soil samples collected from varity of fields as the primary screen sources a series of study was conducted on the screening system of ¦Å-polylysine producing strain. In order to isolate strains with high productivity of ¦Å-polylysine the strains screened were isolated and identified. ¶ÔÓڲɼ¯»ØÀ´µÄÍÁÑù£¬½øÐÐÁ˸»¼¯ºóÔÙÓÃÓÚ½ÓÖÖ£¬»á±È²»¸»¼¯µÄ¸üÒ×ɸµÃ¾úÖÖ¡£Compareed with the non-enriched soil samples inoculated with enriched ones strains were easier to obtain. ±¾ÊµÑé²ÉÓõÄÊÇSGÅàÑø»ù£¨ÒºÌ壩½øÐи»¼¯¡£In this experiment SG medium was used for enrichment. ÓüÓÈëÃÀÀ¶ºÍÖØ¸õËá¼ØµÄSGÅàÑø»ù½øÐгõɸ£¬¸ù¾Ý͸Ã÷ȦµÄ´óС³õɸ³ö²ú¼î¾ú£¬¸´É¸½øÐÐDrÊÔÑéºÍ¼×»ù³ÈÊÔÑ飬ѡ³ö¾ùΪÑôÐÔ·´Ó¦µÄ¾úÖÖ¡£ SG medium with addition of methylene blue and potassium dichromate was applied to primary screen and alkali producing strains were selected according to the diameter of the transparent zone. Dr and methyl orange experiment were conducted in the second screening process and strains with positive reaction in both of the two experiments were selected. ¸´É¸ºó¶Ô¾úÖÖ½øÐÐÒ¡Æ¿·¢½ÍÊÔÑ飬¼ì²âÎü¹â¶È£¬Óñê׼Ʒ×öÇúÏߣ¬Ñ¡µÃ²úÁ¿½Ï¸ßµÄ¼¸ÖÖ¾ú¡£ After second screening fermentation experiment was conducted and absorbance was determined. According to the standard curve made by standard sunstance high productivity strains were obtained. ¶Ô¸´É¸³öÀ´µÄ¾ú½øÐÐһϵÁоúÖÖÐÎÌ¬ÌØÕ÷¡¢ÅàÑøÌØÕ÷ºÍÉúÀíÉú»¯ÌØÕ÷£¬16SrDNA»ùÒòÐòÁнøÐÐÑо¿Óë·ÖÎö¡£¶ÔÕÕÎÄÏ×£¬¶Ôɸѡ³öÀ´µÄ¾úÖÖ½øÐзÖÀ࣬ÃüÃû¡£ The strains selected were studied and annlysed through morphology, culture character and physiology biochemical character as well as 16SrDNA sequence. The screened strains were classified and named with the reference of doucuments. ¹Ø¼ü´Ê£º¦Å-¶à¾ÛÀµ°±Ë᣻¾úÖÖɸѡ£»¾úÖÖ¼ø¶¨£»·¢½Í Key words: ¦Å-polylysine; Strain screening; Strain identification; Fermentation |

6Â¥2012-05-25 08:49:17













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