Efficacy of commercial products in enhancing oil biodegradation in closed laboratory reactors

1992 ◽  
Vol 10 (1) ◽  
pp. 13-23 ◽  
Author(s):  
Albert D. Venosa ◽  
John R. Haines ◽  
Wipawan Nisamaneepong ◽  
Rakesh Govind ◽  
Salil Pradhan ◽  
...  
Keyword(s):  
Commercial Products ◽  
Oil Biodegradation ◽  
Closed Laboratory

Screening of commercial inocula for efficacy in stimulating oil biodegradation in closed laboratory system

1991 ◽  
Vol 28 (1-2) ◽  
pp. 131-144 ◽  
Author(s):  
Albert D. Venosa ◽  
John R. Haines ◽  
Wipawan Nisamaneepong ◽  
Rakesh Govind ◽  
Salil Pradhan ◽  
...  
Keyword(s):  
Laboratory System ◽  
Oil Biodegradation ◽  
Closed Laboratory

Phytochemical investigation of Noni fruit (Morinda citrifolia) and Noni-derived commercial products

Planta Medica ◽  
2006 ◽  
Vol 72 (11) ◽  
Author(s):  
O Potterat ◽  
P Dalsgaard ◽  
F Dieterle ◽  
T Paululat ◽  
T Kühn ◽  
...  
Keyword(s):  
Morinda Citrifolia ◽  
Commercial Products ◽  
Phytochemical Investigation

scholarly journals Effects of Dispersants and Biosurfactants on Crude-Oil Biodegradation and Bacterial Community Succession

2021 ◽  
Vol 9 (6) ◽  
pp. 1200
Author(s):  
Gareth E. Thomas ◽  
Jan L. Brant ◽  
Pablo Campo ◽  
Dave R. Clark ◽  
Frederic Coulon ◽  
...  
Keyword(s):  
Crude Oil ◽  
Early Stage ◽  
Niche Partitioning ◽  
Hydrocarbon Biodegradation ◽  
Hydrocarbonoclastic Bacteria ◽  
Bacterial Response ◽  
Oil Biodegradation ◽  
Interfacial Surface ◽  
Degrading Bacteria ◽  
Oil Spill Response

This study evaluated the effects of three commercial dispersants (Finasol OSR 52, Slickgone NS, Superdispersant 25) and three biosurfactants (rhamnolipid, trehalolipid, sophorolipid) in crude-oil seawater microcosms. We analysed the crucial early bacterial response (1 and 3 days). In contrast, most analyses miss this key period and instead focus on later time points after oil and dispersant addition. By focusing on the early stage, we show that dispersants and biosurfactants, which reduce the interfacial surface tension of oil and water, significantly increase the abundance of hydrocarbon-degrading bacteria, and the rate of hydrocarbon biodegradation, within 24 h. A succession of obligate hydrocarbonoclastic bacteria (OHCB), driven by metabolite niche partitioning, is demonstrated. Importantly, this succession has revealed how the OHCB Oleispira, hitherto considered to be a psychrophile, can dominate in the early stages of oil-spill response (1 and 3 days), outcompeting all other OHCB, at the relatively high temperature of 16 °C. Additionally, we demonstrate how some dispersants or biosurfactants can select for specific bacterial genera, especially the biosurfactant rhamnolipid, which appears to provide an advantageous compatibility with Pseudomonas, a genus in which some species synthesize rhamnolipid in the presence of hydrocarbons.

Cyanogenic Derivatives as Chemical Markers for the Authentication of Commercial Products of Bamboo Shoots

2021 ◽  
Vol 69 (34) ◽  
pp. 9915-9923
Author(s):  
Guillermo F. Padilla-González ◽  
Nicholas J. Sadgrove ◽  
Abigail Rosselli ◽  
Moses K. Langat ◽  
Rui Fang ◽  
...  
Keyword(s):  
Chemical Markers ◽  
Commercial Products ◽  
Bamboo Shoots

Crude oil biodegradation potential of biosurfactant-producing Pseudomonas aeruginosa and Meyerozyma sp.

2021 ◽  
pp. 126276
Author(s):  
Ramla Rehman ◽  
Muhammad Ishtiaq Ali ◽  
Naeem Ali ◽  
Malik Badshah ◽  
Mazhar Iqbal ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Crude Oil ◽  
Oil Biodegradation

scholarly journals Occurrence of mycotoxins in selected agricultural and commercial products available in eastern Poland

2021 ◽  
Vol 19 (1) ◽  
pp. 653-664
Author(s):  
Grażyna Kowalska ◽  
Radosław Kowalski
Keyword(s):  
Ochratoxin A ◽  
Aflatoxin B1 ◽  
Extraction Method ◽  
Maximum Allowable Concentration ◽  
Commercial Products ◽  
Ms Analysis ◽  
Rye Flour ◽  
Three Samples ◽  
Aflatoxin B2

Abstract The objective of this study was the estimation of the content of 13 mycotoxins (diacetoxyscirpenol, T-2 toxin, HT-2 toxin, nivalenol, deoxynivalenol, 3-acetyldeoxynivalenol, fusarenone X, aflatoxin B1, aflatoxin B2, aflatoxin G1, aflatoxin G2, ochratoxin A, and zearalenone) in various products from the eastern part of Poland. The content of mycotoxins in the analysed samples was assayed using the extraction method combined with HPLC-MS/MS analysis. We found mycotoxins in 25 of the 92 samples tested (27%). Contamination with mycotoxins was noted most frequently in samples of cereals – 56% – and also in samples of flour and cocoa, in which a content of mycotoxins was noted in 24 and 16% of the samples, respectively. The most frequently identified were the following – deoxynivalenol detected in 18 samples (72%), zearalenone detected in eight samples (32%), toxin HT-2 detected in four samples (16%), ochratoxin A identified in three samples (12%), and toxin T-2 detected in one sample (4%). In one analysed sample of mixed flour and in one analysed sample of wheat and rye flour, the maximum allowable concentration was exceeded in the case of two identified mycotoxins – deoxynivalenol (2,250 μg/kg) and ochratoxin A (15.6 and 17.1 μg/kg).

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