1995
DOI: 10.1002/jobm.3620350604
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Optimal conditions for production of dextransucrase from Leuconostoc mesenteroides NRLL B‐512F and its properties

Abstract: Dextransucrase production from Leuconostoc mesenteroides NRRL B-5 12F was carried out in batch cultures under different conditions in static culture conditions. Small changes in the temperature had a significant effect on the enzyme production. A temperature of 23 "C gave the maximum yield of the enzyme. An increase in the temperature to 25 "C reduced the enzyme activity by 28%, while a decrease in the temperature to 20 "C caused 17% reduction. Static flask culture favored the dextransucrase production as comp… Show more

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Cited by 18 publications
(16 citation statements)
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“…This is in accordance with other authors̕ results [25,26] and can be explained by deactivation of the enzyme at higher temperatures. The lowest incubation temperature of 17 °C reduced enzyme activity by 18% compared to 23 °C, which most likely reflects the slower metabolism.…”
Section: Effects Of Growth Conditions On Dextransucrase Productionsupporting
confidence: 94%
“…This is in accordance with other authors̕ results [25,26] and can be explained by deactivation of the enzyme at higher temperatures. The lowest incubation temperature of 17 °C reduced enzyme activity by 18% compared to 23 °C, which most likely reflects the slower metabolism.…”
Section: Effects Of Growth Conditions On Dextransucrase Productionsupporting
confidence: 94%
“…The K m = 12.7 ± 0.51 mM, V max = 13.2 ± 0.67 µmol/mg/Min, and K cat = 391.5 ± 4.5 s −1 were calculated for dextransucrase from the effect of sucrose concentration. The dextransucrase from L. mesenteroides NRRL B‐1426 exhibited slightly lower K m value as compared with commercial dextransucrase from L. mesenteroides NRRL B‐512F, which has K m = 14.9 mM , indicating its higher affinity for sucrose. The dextransucrase from L. mesenteroides NRRL B‐1426 synthesizes a high‐molecular mass dextran (>2 × 10 6 Da) with ∼85.5% α‐(1→6) linear and ∼14.5% α‐(1→3) branched linkages .…”
Section: Resultsmentioning
confidence: 88%
“…Thus providing a useful means of producing the purified enzyme with high yield of protein and activity. The two‐phase partitioning process using PEG and dextran is quick and easy and allows the rapid concentration of crude dextransucrase having a positive effect of dextran on the enzyme stability (Goyal et al. 1995).…”
Section: Resultsmentioning
confidence: 99%
“…Leuconostoc mesenteroides NRRL B‐512F was maintained and subcultured in modified‐DeMan, Rogosa, Sharpe (MRS) medium as described previously by Goyal and Katiyar (1996). The enzyme was produced using an enzyme‐production media as described earlier (Goyal et al. 1995).…”
Section: Methodsmentioning
confidence: 99%