Rapid determination of glycerol by the potassium periodate method

Hartman, L.

doi:10.1002/jctb.5010030704

Cited by 9 publications

(1 citation statement)

References 3 publications

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“…The concentration of free glycerol was determined by its oxidation with potassium periodate under acidic condition to formaldehyde, along with formic acid, iodate, and water [ 32 ]. CH 2 (OH)·CH(OH)·CH 2 OH + 2IO 4 − → 2H·CHO + H·CO 2 H + H 2 O + 2IO 3 − …”

Section: Methodsmentioning

confidence: 99%

Mycobacterial Populations Partly Change the Proportions of the Cells Undergoing Asymmetric/Symmetric Divisions in Response to Glycerol Levels in Growth Medium

Pradhan

Mukkayyan

Jakkala

et al. 2021

Cells

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Twenty to thirty percent of the septating mycobacterial cells of the mid-log phase population showed highly deviated asymmetric constriction during division (ACD), while the remaining underwent symmetric constriction during division (SCD). The ACD produced short-sized cells (SCs) and normal/long-sized cells (NCs) as the sister–daughter cells, but with significant differential susceptibility to antibiotic/oxidative/nitrite stress. Here we report that, at 0.2% glycerol, formulated in the Middlebrook 7H9 medium, a significantly high proportion of the cells were divided by SCD. When the glycerol concentration decreased to 0.1% due to cell-growth/division, the ACD proportion gradually increased until the ACD:SCD ratio reached ~50:50. With further decrease in the glycerol levels, the SCD proportion increased with concomitant decrease in the ACD proportion. Maintenance of glycerol at 0.1%, through replenishment, held the ACD:SCD proportion at ~50:50. Transfer of the cells from one culture with a specific glycerol level to the supernatant from another culture, with a different glycerol level, made the cells change the ACD:SCD proportion to that of the culture from which the supernatant was taken. RT-qPCR data showed the possibility of diadenosine tetraphosphate phosphorylase (MSMEG_2932), phosphatidylinositol synthase (MSMEG_2933), and a Nudix family hydrolase (MSMEG_2936) involved in the ACD:SCD proportion-change in response to glycerol levels. We also discussed its physiological significance.

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Section: Methodsmentioning

confidence: 99%

Mycobacterial Populations Partly Change the Proportions of the Cells Undergoing Asymmetric/Symmetric Divisions in Response to Glycerol Levels in Growth Medium

Pradhan

Mukkayyan

Jakkala

et al. 2021

Cells

View full text Add to dashboard Cite

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The Influence of Temperature on Some Properties of Yeast

Merritt¹

1966

Journal of the Institute of Brewing

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The effects of temperature on the growth of yeast and on its metabolic activity in distiller's malt wort have been studied. In un-aerated fermentations, maximum yeast production takes place at about 30°C. whereas the growth rate in aerated cultures is highest at 35°C. The lag phase of the yeast studied fell from 6 hr. at 20°C. to 2-8 hr. at 25°C. and was not thereafter greatly affected by increases of temperature until 42°C. was reached, at which point growth ceased. Maltase activity was maximal at 25°C. when considered in terms of unit quantities of either yeast or fermenting wort, but the optimum temperature for initial fermentation velocity varied according to the time over which the measurement was made, being maximal at 40°C. for 0-5 hr., and at 35°C. for 2 hr. Alcohol production was highest at 25°C. whereas glycerol and higher alcohol formation took place optimally at 30°C. merritt: influenxe of temperature on yeast Vol. 72, 1966] merritt: influence of temperature on yeast [J. Inst. Brew.

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Verwendung der Perjodat‐Methode in der Glycerin‐Analyse

Hintermaier

1955

Fette, Seifen, Anstrichm.

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Zusurrll,r ellj UJJ 11 ng l i t i t Zuni Teil sehr niedriKe n-Paraffin-Gehalte aufwersen. Mit Hilfe der ~a r a~f i n -~a r n s t o f f -~i n s~l u~~e r b i l l d u l l g r t l wurden 17 ~~~d~l~~~~~l i~~ auf ihren ~~h~l~ an n-~araffinen 3 0~/ 0 sind wenilr z,aia und weisen kSrnipe struktur auf. ES wird die Meinung vertreten, dad der Gebrauchswert einer Vaseline insbesondere durch Faktoren wie Kettenlange, Art jedoch nur untergeordnet durch den n-Paraffin-Gehalt be-untersuht. Vaseline mit einem n-Paraffin-Geha1t mehr der Verzweiflng durch den Gehalt an Ringparaffinen, .. . --., Vaseline, die bei Zimmertemperatvr fliissige -1so-und Ringparaffine enthalten, sind ebenfalls van geringem Gebrauchs-Es ist mir eine angenehme Pflicht, meinem bewahrten wert. Es handelt sich hierbei stets um rnit Vaselinolen ge-Assistenten, Herrn iM. Hahn, fur die Unterstiitzung bei der fluxte Kunstvaseline. Entgegen friiheren Angaben van W . Durchfuhrung der Analysen meinen herzlichen Dank auszu-Piesting und R. Boenke konnen Vaseline van schlechter Qua-sprechen.

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Rapid determination of glycerol by the potassium periodate method

Cited by 9 publications

References 3 publications

Mycobacterial Populations Partly Change the Proportions of the Cells Undergoing Asymmetric/Symmetric Divisions in Response to Glycerol Levels in Growth Medium

Mycobacterial Populations Partly Change the Proportions of the Cells Undergoing Asymmetric/Symmetric Divisions in Response to Glycerol Levels in Growth Medium

The Influence of Temperature on Some Properties of Yeast

Verwendung der Perjodat‐Methode in der Glycerin‐Analyse

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