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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2008.1
- 수록면
- 61 - 66 (6page)
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The proteins in whey are separated and used as food additives. The remains (mainly lactose) are spray-dried to produce sweet whey powder, which is widely used as an additive for animal feed. Sweet whey powder is also used as a carbon source for the production of valuable products such as polysaccharides. Glucose, fructose, galactose, and sucrose as asupplemental carbon source were evaluated for the production of PS-7 from Azotobacter indicus var.myxogenes L3 grown on whey based MSM media. Productions of PS-7 with 2% (w/v) fructose and sucrose were 2.05 and 2.31 g/L, respectively. The highest production of PS-7 was 2.82 g/L when 2 % (w/v) glucose was used as the carbon source. Galactose showed low production of PS-7 among the carbon sources tested. The effects of various carbon sources addition to whey based MSM medium showed that glucose could be the best candidate for the enhancement of PS-7 production using whey based MSM medium. To evaluate the effect of glucose addition to whey based media on PS-7 production, fermentations with whey and glucose mixture (whey 1, 2, 3%; whey 1% + glucose 1%, whey 1% + glucose 2% and glucose 2%, w/v) were carried out. Significant enhancement of PS-7 production with addition of 1% (w/v) and 2% (w/v) glucose in 1% (w/v) whey media was observed. The PS-7 concentration of 2% glucose added whey lactose based medium was higher than that of 1% glucose addition, however, the product yield YP/S was higher in 1% glucose added whey lactose based MSM medium. Therefore, the optimal condition for the PS-7 production from the Azotobacter indicus var.myxogenes L3, was 1% glucose addition to 1% whey lactose MSM medium
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참고문헌 (9)
참고문헌 신청
Dlamini, A. M / 1997 / Production of high viscosity whey broths by lactose utilizing Xanthomonas campestris strain / Appl. Environ. Microbiol 50 : 1483 ~ 1485
Dubois, M. / 1956 / Colorimetric method for determination of sugars and related substances / Anal. Chem 28 : 350 ~ 356
Falk, C. / 1996 / Structural studies of the exocellular polysaccharide from Sphingomonas aucimobilis strain I-886 / Carbohydr. Res 285 : 69 ~ 79
Gulin, S. / 2001 / Structural studies of S-7, another exocellular polysaccharide containing 2-deoxy-arbino-hexuronic acid / Carbohydr. Res 311 : 285 ~ 290
Jurgen, O / 2000 / Respiratory protection of nitrogenase in Azotobacter species: is a widely held hypothesis unequivocally supported by experimental evidence / FEMS Microbiol
Dubois, M. / 1956 / Colorimetric method for determination of sugars and related substances / Anal. Chem 28 : 350 ~ 356
Falk, C. / 1996 / Structural studies of the exocellular polysaccharide from Sphingomonas aucimobilis strain I-886 / Carbohydr. Res 285 : 69 ~ 79
Gulin, S. / 2001 / Structural studies of S-7, another exocellular polysaccharide containing 2-deoxy-arbino-hexuronic acid / Carbohydr. Res 311 : 285 ~ 290
Jurgen, O / 2000 / Respiratory protection of nitrogenase in Azotobacter species: is a widely held hypothesis unequivocally supported by experimental evidence / FEMS Microbiol
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