Examination of proliferation of probiotic microbes by isoperibolic calorimetry

Probiotics are live microbes in the form of dried or fermented cells that are highly beneficial for human health. The food industry has been revolutionised due to introduction of potential probiotic organisms in a varied formulations derived from mostly dairy products. Isolation of probiotic microbes from unexplored non-dairy sources is gaining attention these days. In the present study, six potential probiotic isolates from non-dairy sources were obtained that are also biocompatible with each other. Out of these, five isolates were gram positive rod shaped and one was gram negative rod shaped. These isolates were able to grow in presence of lysozyme, low pH and bile salts with good adherence ability. The market for probiotic microorganisms from unconventional products is accelerating to deal with lactose intolerant people. These probiotic attribute studies revealed their potential to be exploited at industrial scale.

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Enthalpies of mixing in ternary Al–Gd–Mn liquid alloys

International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde) ◽

10.1515/ijmr-2021-8299 ◽

2021 ◽

Vol 112 (9) ◽

pp. 735-742

Author(s):

Michael Ivanov ◽

Natalia Usenko ◽

Natalia Kotova

Keyword(s):

Binary System ◽

Ternary System ◽

Liquid Alloys ◽

Enthalpies Of Mixing ◽

Minimum Value ◽

Isoperibolic Calorimetry ◽

Wide Range ◽

Constituent Binary

Abstract The enthalpies of mixing in liquid alloys of the ternary Al–Gd–Mn system were determined over a wide range of compositions by means of isoperibolic calorimetry at 1650 K. The measurements of the partial enthalpies of components were performed along five sections: for the ΔH̅ Al (sections with x Gd/x Mn = 0.30/0.70 and 0.65/0.35 for x Al changed from 0 up to 0.30); for the ΔH̅ Gd (x Al/x Mn = 0.80/ 0.20 and 0.50/0.50 for x Gd changed from 0 up to 0.30); for the ΔH̅ Mn (x Al/x Gd = 0.29/0.71 for x Mn changed from 0 up to 0.26). The enthalpies of mixing in the ternary system were found to be exothermic and steadily increasing in absolute values from the Mn corner towards the Al–Gd constituent binary system, reaching the minimum value of approximately – 37 kJ · mol–1 in the vicinity of the Al0.6Gd0.4 composition, evidently related to the formation of stable Al2Gd phase.

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Reversal of ciprofloxacin-induced testosterone reduction by probiotic microbes in mouse testes

General and Comparative Endocrinology ◽

10.1016/j.ygcen.2019.113268 ◽

2019 ◽

Vol 284 ◽

pp. 113268

Author(s):

Congcong Xie ◽

Yanqing Bian ◽

Helin Feng ◽

Yu Zhao ◽

Lixuan Wang ◽

...

Keyword(s):

Probiotic Microbes

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Application of Isothermal and Isoperibolic Calorimetry to Assess the Effect of Zinc on Hydration of Cement Blended with Slag

Materials ◽

10.3390/ma12182930 ◽

2019 ◽

Vol 12 (18) ◽

pp. 2930 ◽

Cited By ~ 2

Author(s):

Šiler ◽

Kolářová ◽

Novotný ◽

Másilko ◽

Bednárek ◽

...

Keyword(s):

Cement Hydration ◽

Raw Materials ◽

Isothermal Calorimetry ◽

Real Life ◽

Diffraction Method ◽

X Ray Diffraction ◽

X Ray ◽

Isoperibolic Calorimetry ◽

Poorly Soluble ◽

Furnace Slag

This work deals with the influence of zinc on cement hydration. The amount of zinc in cement has increased over recent years. This is mainly due to the utilization of solid waste and tires, which are widely used as a fuel in a rotary kiln. Zinc can also be introduced to cement through such secondary raw materials as slag, due to increased recycling of galvanized materials. The aim of this work was to determine the effect of zinc on the hydration of Portland cement, blended with ground blast furnace slag (GBFS). This effect was studied by isothermal and isoperibolic calorimetry. Both calorimetry methods are suitable for measurements during the first days of hydration. Isoperibolic calorimetry monitors the hydration process in real-life conditions, while isothermal calorimetry does so at a defined chosen temperature. Zinc was added to the cement in the form of two soluble salts, namely Zn(NO3)2, ZnCl2, and a poorly soluble compound, ZnO. The concentration of added zinc was chosen to be 0.05, 0.1, 0.5, and 1mass percent. The amount of GBFS replacement was 15% of cement dosage. The newly formed hydration products were identified by X-ray diffraction method (XRD).

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Genetic Mechanisms of Prebiotic Oligosaccharide Metabolism in Probiotic Microbes

Annual Review of Food Science and Technology ◽

10.1146/annurev-food-022814-015706 ◽

2015 ◽

Vol 6 (1) ◽

pp. 137-156 ◽

Cited By ~ 69

Author(s):

Yong Jun Goh ◽

Todd R. Klaenhammer

Keyword(s):

Genetic Mechanisms ◽

Probiotic Microbes

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Probiotic microbes: do they need to be alive to be beneficial?

Nutrition Reviews ◽

10.1111/j.1753-4887.2009.00226.x ◽

2009 ◽

Vol 67 (9) ◽

pp. 546-550 ◽

Cited By ~ 70

Author(s):

Jasmeet Kataria ◽

Nan Li ◽

James L Wynn ◽

Josef Neu

Keyword(s):

Probiotic Microbes

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The Influence of Aggregates on the Properties of Concrete

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1000.277 ◽

2014 ◽

Vol 1000 ◽

pp. 277-280 ◽

Cited By ~ 1

Author(s):

Pavel Šiler ◽

Ondřej Bezděk ◽

Iva Kolářová ◽

Eva Bartoníčková ◽

Tomáš Opravil ◽

...

Keyword(s):

Mechanical Properties ◽

Particle Size ◽

Compressive Strength ◽

Flexural Strength ◽

Portland Cement ◽

Particle Size Analysis ◽

Hydration Process ◽

Silica Sand ◽

Size Analysis ◽

Isoperibolic Calorimetry

This work is focused on the influence of aggregates on the mechanical properties of concrete and hydration process. The flexural strength and compressive strength were observed after 1, 7 and 28 days of curing. The process of hydration was monitored using isoperibolic calorimetry. Laser particle size analysis of aggregates was also performed. The following materials were used: Portland cement CEM I 42,5 R-Sc, finely ground silica sand, calcinated bauxite, fine, medium and rough testing sand (defined in ČSN EN 196-1).

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Electrochemical Isoperibolic Calorimetry for D2O Electrolysis

10.26434/chemrxiv.10269713 ◽

2019 ◽

Author(s):

Melvin Miles

Keyword(s):

Temperature Measurement ◽

Experimental Error ◽

Cell Voltage ◽

Enthalpy Change ◽

Rate Of Change ◽

Cell Temperature ◽

Calorimetric Cell ◽

Isoperibolic Calorimetry ◽

The Mean ◽

Derivatives Of

Equations developed for isoperibolic electrochemical calorimetry were tested for the electrolysis of D2O in an open calorimetric cell. The derivatives of these equations gave correct values within the experimental error range for the important rate of change of the cell temperature with time (dT/dt). In addition, these calorimetric equations were also tested directly in determining the enthalpy change (ΔH) for the D2O electrolysis reaction. The mean experimental value at 298.15 K was ΔH = 294.4 ± 0.3 kJ/mole. This compares favorably (within 0.10%) with the literature value of ΔH = 294.600 kJ/mole. The accuracy of these ΔH measurements could be even further improved by more accurate cell voltage and cell temperature measurement. <br>

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