Quantitative chemocatalytic production of lactic acid from glucose under anaerobic conditions at room temperature

2017 ◽  
Vol 19 (1) ◽  
pp. 76-81 ◽  
Author(s):  
Luyang Li ◽  
Feng Shen ◽  
Richard L. Smith ◽  
Xinhua Qi

An extraordinarily simple and highly-efficient chemocatalytic system for production of lactic acid (95.4% yield) from glucose at room temperature and ambient pressure is reported.

2019 ◽  
Vol 10 ◽  
pp. 1705-1712
Author(s):  
Ayiguli Dagaerbieke ◽  
Oyundelger Ganzorig ◽  
Kensuke Miyazaki ◽  
Takashi Yoshida

Potato pulp was inoculated either with the antibacterial lactic acid bacteria Lactococcus lactis and L. diolivorans and the inoculated potato pulp was ensiled under anaerobic conditions for 30 d at room temperature in a mini-silo. We have previously reported that L. diolivorans produces antimicrobial peptides with potent antibacterial activity; therefore, the bacterium is expected to increase the fermentation quality of the potato pulp. The quality of the potato pulp silage was evaluated. The moisture content of the potato pulp silage was remained 822 g/kg before and after ensiling. The protein content in the silage increased from an initial concentration of 39 to 57 g/kg and 58 g/kg for L. lactis and L. diolivorans inoculations, respectively. The lactic acid content significantly increased from 2 to 52 g/kg (L. lactis) and 50 g/kg (L. diolivorans) after ensiling, whereas, toxic butyric acid was not detected with either treatment. These results suggest that the inoculation of potato pulp with L. lactis or L. diolivorans increases the quality and nutrition of potato pulp as silage. In particular, L. diolivorans is an efficient inoculant because it produces antibacterial peptides that prevent the increase of saprophyte in silage.


1986 ◽  
Vol 51 (3) ◽  
pp. 636-642
Author(s):  
Michal Németh ◽  
Ján Mocák

A highly efficient coulometric cell was designed and constructed, ensuring a constant potential over the whole surface of the working electrode and suitable for very rapid electrolysis. It consists of concentric cylindrical Teflon parts; also the working and auxiliary electrodes are cylindrical and concentric. Electrolysis can be carried out under anaerobic conditions. Functioning of the cell was tested on the oxidation of hexacyanoferrate(II) and chlorpromazine and reduction of hexacyanoferrate(III). The new cell is suitable for routine quantitative analyses and in studying the mechanism and kinetics of moderately rapid chemical reactions.


Author(s):  
Swadhin Garain ◽  
Bidhan Chandra Garain ◽  
Muthusamy Eswaramoorthy ◽  
Swapan K. Pati ◽  
Subi J. George

In a comparison of muscles poisoned with mono-iodo-acetic acid (IAA) in the presence and in the absence of oxygen respectively, Lundsgaard (1930) found:- (1) That the spontaneous breakdown of phosphagen in poisoned resting muscle is much more rapid under anaerobic conditions. (2) That the onset of the characteristic contracture produced by IAA is accompanied always by an increase in the rate of oxygen consumption.


2013 ◽  
Vol 395-396 ◽  
pp. 637-640
Author(s):  
Yi Yang ◽  
Zheng Ping Wang ◽  
Ling Meng ◽  
Lian Jun Wang

MIL-101, a metal-organic framework material, was synthesized by the high-temperature hydrothermal method. Triethylenetetramine (TETA) modification enabled the effective grafting of an amino group onto the surface of the materials and their pore structure. The crystal structure, micromorphology, specific surface area, and pore structure of the samples before and after modification were analyzed with an X-ray diffractometer, scanning electron microscope, specific surface and aperture tester, and infrared spectrometer. The carbon dioxide adsorption properties of the samples were determined by a thermal analyzer before and after TETA modification. Results show that moderate amino modification can effectively improve the microporous structure of MIL-101 and its carbon dioxide adsorption properties. After modification, the capacity of MIL-101 to adsorb carbon dioxide decreased only by 0.61 wt%, and a high adsorption capacity of 9.45 wt% was maintained after six cycles of adsorption testing at room temperature and ambient pressure.


2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Evelyn Carolina Martínez Ceballos ◽  
Ricardo Vera Graziano ◽  
Gonzalo Martínez Barrera ◽  
Oscar Olea Mejía

Poly(dichlorophosphazene) was prepared by melt ring-opening polymerization of the hexachlorocyclotriphosphazene. Poly[bis(2-hydroxyethyl-methacrylate)-phosphazene] and poly[(2-hydroxyethyl-methacrylate)-graft-poly(lactic-acid)-phosphazene] were obtained by nucleophilic condensation reactions at different concentrations of the substituents. The properties of the synthesized copolymers were assessed by FTIR,1H-NMR and31P-NMR, thermal analysis (DSC-TGA), and electron microscopy (SEM). The copolymers have a block structure and show twoTg's below room temperature. They are stable up to a temperature of 100°C. The type of the substituents attached to the PZ backbone determines the morphology of the polymers.


ChemInform ◽  
2010 ◽  
Vol 41 (44) ◽  
pp. no-no
Author(s):  
Yi-Yuan Peng ◽  
Jinbiao Liu ◽  
Xiaoli Lei ◽  
Zenlan Yin

Sign in / Sign up

Export Citation Format

Share Document