Differences in the uptake of glucose and glycerol by Tieghemiomyces parasiticus in axenic culture

Tieghemiomyces parasiticus, a biotrophic haustorial mycoparasite, makes excellent axenic growth on a glycerol – casein hydrolysate medium, while growth on a glucose – casein hydrolysate medium is equivalent to that of a control medium containing only the nitrogen source. A comparison of 14C-glucose and 14C-glycerol uptake indicates these substrates enter this mycoparasite at significantly different rates. Incorporation of 14C-glucose is extremely slow and limited, while 14C-glycerol incorporation is very rapid. Excellent axenic growth of this mycoparasite occurs when a glucose – casein hydrolysate medium is supplemented with the surface-active agent Tween 80. These findings suggest that the inability of glucose to support growth results from the inability of this substrate to readily enter the vegetative hyphae of this mycoparasite when cultured axenically.

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Impacts of Surface-Active Agents on the Crystal Structure of Nano Manganese Oxide

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.798-799.125 ◽

2013 ◽

Vol 798-799 ◽

pp. 125-129

Author(s):

Fu Yun Li ◽

Jing Wang ◽

Ying Yang Qin ◽

Li Zhen Yang

Keyword(s):

Crystal Structure ◽

Manganese Oxide ◽

Hydrothermal Method ◽

Manganese Oxides ◽

Surface Active Agent ◽

Active Agent ◽

Tween 80 ◽

Surface Active Agents ◽

Surface Active ◽

Addition Amount

The nano manganese oxides were prepared with the hydrothermal method by adding surface-active agent. The influence of the type and addition amount of surface-active agent on the preparation of nano manganese oxides was studied. The products were characterized with XRD. Experimental results show that MnOOH is obtained at 180°C with the addition of N,N,N-trimethyl-1-dodecanaminium bromide, and Mn3O4is obtained at 180 °C with OP Emulsifier or Tween-80 added. Different addition amount of surface-active agent would have diverse effects on the purity of products.

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Cardiovascular effects of radioactive microsphere suspensions and Tween 80 solutions

AJP Heart and Circulatory Physiology ◽

10.1152/ajpheart.1977.232.3.h331 ◽

1977 ◽

Vol 232 (3) ◽

pp. H331-H334 ◽

Cited By ~ 6

Author(s):

R. W. Millard ◽

H. Baig ◽

S. F. Vatner

Keyword(s):

Adverse Reactions ◽

Surface Active Agent ◽

Active Agent ◽

Cardiovascular Effects ◽

Tween 80 ◽

Left Ventricular ◽

Organ Blood Flow ◽

Flow Measurements ◽

Minimum Concentration ◽

Surface Active

The cardiovascular effects of two concentrations of Tween 80 (polyoxyethylene sorbitan mono-oleate), a surface-active agent commonly used to prevent aggregation of radionuclide-labeled microspheres, were examined in conscious dogs. Two types of adverse reactions were noted. The first (Type A) consisted of reductions in cardiac dimensions as well as hypotension and tachycardia. The second (Type B) was less severe and involved only a decrease in cardiac dimensions with no change in left ventricular systolic pressure or heart rate. A 10% dextran solution with .05 +/- .02% Tween 80 injected into the left atrium caused systemic and/or cardiac alterations in all four dogs studied. Administration of a lower concentration of Tween 80 (0.01 +/- 0.005%), which was the minimum concentration necessary to prevent aggregation of microspheres, induced adverse reactions in 6 of 41 dogs studied. Subsequent administration of this concentration of Tween 80 on the same day rarely induced adverse reactions. Thus, care must be exercised in application of microsphere techniques to organ blood flow measurements when Tween 80 is used to prevent microsphere aggregation, since this surface-active agent causes profound alterations in cardiac dynamics in concentrations normally employed in experiments involving microsphere techniques.

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Autotrophic Growth of Thiobacillus acidophilus in the Presence of a Surface-Active Agent, Tween 80

Applied and Environmental Microbiology ◽

10.1128/aem.38.5.795-799.1979 ◽

1979 ◽

Vol 38 (5) ◽

pp. 795-799 ◽

Cited By ~ 7

Author(s):

J. G. Kingma ◽

Marvin Silver

Keyword(s):

Surface Active Agent ◽

Active Agent ◽

Tween 80 ◽

Autotrophic Growth ◽

Surface Active ◽

Thiobacillus Acidophilus

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Preparation of Phenol–Formaldehyde Foams Using Fulvic Acid

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.415-417.1247 ◽

2011 ◽

Vol 415-417 ◽

pp. 1247-1251

Author(s):

Xiang Lin Zhang ◽

Zheng An Wang ◽

Xiao Su

Keyword(s):

Compressive Strength ◽

Fulvic Acid ◽

Phenol Formaldehyde ◽

Surface Active Agent ◽

Active Agent ◽

Tween 80 ◽

Foaming Agent ◽

Good Material ◽

Surface Active ◽

Foaming Temperature

Abstract：preparation fulvic acid(FA) from lignite in particular process，fulvic acid- phenol-formaldehyde foams(FAPF) were synthesized using the FA as the replacement of phenol at varying ratios from 15-60 wt.%. The effects of foaming agent (dichlormethan)，surface active agent(tween-80) ，curing agengt(hydrochloric acid and phosphoric acid 1:1wt/wt), foaming temperature and FA amount on the property of foam were determined.Curing and foaming were synchronized when foaming agent was 2-6wt.% of the resin, surface active agent was 3-4wt.%,curing agengt was 12-16wt%,foaming temperature was 70-80 °C and FA less than 40wt.%. structure and characterized performance analysis of FAPF Through the Fourier infrared spectroscopy (IR), thermogravimetric (TG) and compressive strength. The results show that: FA could be used as a very good material of partly replace phenol.

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