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Your search keyword '"van Vuuren, H.J.J."' showing total 19 results
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19 results on '"van Vuuren, H.J.J."'

18. Differentiation of Leuconostoc species by nicotinamide adenine dinucleotide-dependent D(-)-lactic dehydrogenase profiles

Author

Dicks, L.M.T. and Van Vuuren, H.J.J.

Abstract

The electrophoretic mobility of the d(−)-nLDH's of Leuconostoc oenos (nine strains), Leuconostoc mesenteroides subsp. mesenteroides (one strain), Leuconostoc mesenteroides subsp. dextranicum (one strain), Leuconostroc lactis (three strains), Leuconostoc paramesenteroides (two strains) and a Leuconostoc sp. were compared using conventional and stacked polyacrylamide gels. A singel diffused d(−)-nLDH band was obtained for each strain on a 7% acrylamide gel. However, several well defined d(−)-nLDH bands were obtained for each strain when a polyacrylamide stacked gel was used. Based on d(−)-nLDH profiles of strains of L. oenos were different from those obtained for the non-acidophilic Leuconostoc spp. Leuconostoc mesenteroides subsp. mesenteroides and L. mesenteroides subsp. dextranicum had similar d-nLDH profiles. The overall d(−)-nLDH profiles of L. lactis corresponded well. Different d(−)-nLDH profiles were obtained for L. paramesenteroides DSM 20201 and the type strain of L. paramesenteroides (DSM 20288T). The d(−)-nLDH profile of Leuconostoc sp. ATCC 21436 corresponded well with the profile obtained for the d(−)-nLDH electrophoretic marker of Lactobacillus leichmannii.

Published
1990
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19. Isolation and characterization of Leuconostoc oenos bacteriophages from wine and sugarcane

Author

Nel, Louise, Wingfield, Brenda D., Van der Meer, Linda J., and Van Vuuren, H.J.J.

Abstract

Twenty bacteriophages specific for Leuconostoc oenos were isolated from South African red wines and sugarcane. Leuconostoc oenos ML34 and PSU-1, used commercially by the wine industry, were sensitive to some of the phages. Ten of the 39 L. oenos strains tested were resistant or insensitive to all phages. The bacteriophages were morphologically similar to Bradley's type B phages, possessing hexagonal heads and long flexible, non-contractile tails. Restriction endonuclease analysis of phage DNA revealed the existence of five genetic groups.

Published
1987
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