1991
DOI: 10.1111/j.1365-2672.1991.tb02969.x
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Effect of chemical treatments on the micro‐organisms associated with malting of sorghum grains and sorghum malt

Abstract: The effect of five chemical preservatives on the micro-organisms associated with sorghum grain and malts was investigated. Sorbic acid, sodium benzoate, nisin, formaldehyde and lime at concentrations up to 500, 100, 1000, 1500 and 2000 ppm, respectively did not adversely affect the malting properties of sorghum grain. Only HCHO and Ca(OH)2, each of which prevented bacteria and mould growth at 500 and 2000 ppm, respectively, were sufficiently effective at maximum practicable concentrations to control microbial … Show more

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Cited by 8 publications
(6 citation statements)
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“…Similarly, the lactic acid bacteria generally involved in the brewing of traditional African beers include the genera Limosilactobacillus, Lactobacillus, Pediococcus, Leuconostoc, Lactococcus, Streptococcus and Enterococcus (Sawadogo-Lingani et al, 2007;N'Guessan et al, 2011;Lyumugabe et al, 2012;Adimpong et al, 2013;Greppi et al, 2013;Coulibaly et al, 2014;Oriola et al, 2017;Zheng et al, 2020). Molds of the genera Aspergillus, Penicillium, Rhizopus and Geotrichum as well as acetic acid bacteria are often associated with malting and brewing of African sorghum beers (Ilori et al, 1991;Ogundiwin et al, 1991;Lyumugabe et al, 2012;Zaukuu et al, 2016;Touwang et al, 2018). Alcoholic fermentation of dolo and pito in Burkina-faso and Ghana respectively are dominated by the species Saccharomyces cerevisiae (45-99%) with a biodiversity of strains of other species such as Torulaspora delbrueckii, Geotrichum candidum, Kloeckera apiculata, Candida tropicalis, C. krusei, C. albicans, C. glabrata, C. utilis, Pichia spp., Kluyeromyces spp.…”
Section: Introductionmentioning
confidence: 99%
“…Similarly, the lactic acid bacteria generally involved in the brewing of traditional African beers include the genera Limosilactobacillus, Lactobacillus, Pediococcus, Leuconostoc, Lactococcus, Streptococcus and Enterococcus (Sawadogo-Lingani et al, 2007;N'Guessan et al, 2011;Lyumugabe et al, 2012;Adimpong et al, 2013;Greppi et al, 2013;Coulibaly et al, 2014;Oriola et al, 2017;Zheng et al, 2020). Molds of the genera Aspergillus, Penicillium, Rhizopus and Geotrichum as well as acetic acid bacteria are often associated with malting and brewing of African sorghum beers (Ilori et al, 1991;Ogundiwin et al, 1991;Lyumugabe et al, 2012;Zaukuu et al, 2016;Touwang et al, 2018). Alcoholic fermentation of dolo and pito in Burkina-faso and Ghana respectively are dominated by the species Saccharomyces cerevisiae (45-99%) with a biodiversity of strains of other species such as Torulaspora delbrueckii, Geotrichum candidum, Kloeckera apiculata, Candida tropicalis, C. krusei, C. albicans, C. glabrata, C. utilis, Pichia spp., Kluyeromyces spp.…”
Section: Introductionmentioning
confidence: 99%
“…This mashing technique has also been used to produce stout of good quality from malted sorghum (28). However, the problem of high malting loss in sorghum still remained unsolved, because reduction of malting loss through the use of chemical treatments also reduces the malting quality (diastatic power) of the grains (22,25,29).…”
Section: Introductionmentioning
confidence: 99%
“…Nespornou výho-dou posunu hodnoty pH máčecích vod do kyselé či zásadité oblasti je bezesporu i dezinfekce zrn . Ogundiwin a kolegové (Ogundiwin et al ., 1991) prokázali, že slady máčené v zásadité vodě, jejíž hodnota pH byla upravena pomocí hydroxidu vápenatého, obsahují na svém povrchu méně koliformních bakterií a plísní než běžné slady . O několik let později Lefyedi a Taylor (Lefyedi a Taylor, 2006) dosáhli v podobné studii mnohem lepších výsledků při použití hydroxidu sodného, ovšem pouze v případě kontaminace koliformními bakteriemi .…”
unclassified
“…Disinfection of grains is an undisputable advantage of the shift of pH level in steeping water toward acidic or alkali . Ogundiwin and colleagues (Ogundiwin et al ., 1991) have proven that malts steeped in alkaline water with the pH value modified using calcium hydroxide contain on their surface less coliform bacteria and fungi compared to common malts . A few years later, Lefyedi and Taylor (Lefyedi and Taylor, 2006) in similar study achieved much better results with the use of sodium hydroxide but only in cases of contamination with coliform bacteria .…”
mentioning
confidence: 99%