scholarly journals Physicochemical Characterization of Home-Made Soap from Waste-Used Frying Oils

Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1219
Author(s):  
Bojan Antonić ◽  
Dani Dordević ◽  
Simona Jančíková ◽  
Bohuslava Tremlova ◽  
Ivan Kushkevych
Keyword(s):  
Olive Oil ◽  
Physicochemical Characterization ◽  
Point Of View ◽  
Frying Oils ◽  
Sulfate Reducing ◽  
Processing Plants ◽  
Soap Production ◽  
Reducing Bacteria ◽  
Sample Pair

The study aimed to describe the utilization of waste frying oils, originated mainly from households, in home-made soap production and to emphasize the advantages of soap biodegradation in comparison to biological treatment of oils. The physicochemical analyses of soaps were used to check the differences between the samples made of fresh and fried oils. Significant (p < 0.05) difference between the soaps made of fresh/fried olive oil pair was obtained, while the rapeseed sample pair did not differ significantly (p < 0.05). Malondialdehyde (MDA) exhibited notable differences with an increase from 1.94 μg/g to 2.33 μg/g for olive oil fresh/fried pair and from 3.43 μg/g to 4.10 μg/g for rapeseed–palm oil fresh/fried pair. The studies addressing the soap biodegradation process revealed that soaps are degrading up to four times faster than oils in waste processing plants. Literature data showed the syntrophic ways of soap degradation and degradation solely done by sulfate-reducing bacteria. Obtained results, same as literature data, indicated that soaps produced from fried plant oils represent acceptable products from the economic and environmental point of view. Soap production can be considered one of the possible ways toward reduction of waste oil disposal.

Characterization of two dissimilatory sulfite reductases from sulfate-reducing bacteria

1988 ◽  
Vol 42 (1-4) ◽  
pp. 905-908
Author(s):  
B. H. Huynh ◽  
I. Moura ◽  
A. R. Lino ◽  
J. J. G. Moura ◽  
J. Legall
Keyword(s):  
Sulfate Reducing Bacteria ◽  
Sulfate Reducing ◽  
Reducing Bacteria

Microbiological and physicochemical characterization of dry-cured Halal goat meat. Effect of salting time and addition of olive oil and paprika covering

Meat Science ◽  
2014 ◽  
Vol 98 (2) ◽  
pp. 129-134 ◽  
Author(s):  
Sanâa Cherroud ◽  
Aida Cachaldora ◽  
Sonia Fonseca ◽  
Amin Laglaoui ◽  
Javier Carballo ◽  
...  
Keyword(s):  
Olive Oil ◽  
Physicochemical Characterization ◽  
Goat Meat

Quantitative ecology of psychrophilic bacteria in an aquatic environment and characterization of heterotrophic bacteria from permanently cold sediments

1979 ◽  
Vol 25 (12) ◽  
pp. 1433-1442 ◽  
Author(s):  
L. G. Leduc ◽  
G. D. Ferroni
Keyword(s):  
Incubation Temperature ◽  
Heterotrophic Bacteria ◽  
Sulfate Reducing Bacteria ◽  
Gram Positive ◽  
Sulfate Reducing ◽  
Quantitative Ecology ◽  
Physiological Group ◽  
Sulfur Oxidizing ◽  
Reducing Bacteria

Aerobic heterotrophic bacteria, anaerobic heterotrophic bacteria, ammonifying bacteria, sulfur-oxidizing bacteria, and sulfate-reducing bacteria were quantitated in Fairbank Lake, an oligotrophic to mesotrophic lake with a permanently cold hypolimnion, as a function of depth in three seasons. Representatives of each physiological group were recovered at an incubation temperature of 2 °C and for all the physiological groups the 2 °C counts were usually higher than the 37 °C counts, although sulfate-reducing bacteria were not recoverable at an incubation temperature of 37 °C. In addition, the numbers of each physiological type were generally higher in the sediments than in the water column, except in the case of sulfate-reducing bacteria for which the counts were low and often below the detection limit. Aerobic heterotrophic bacteria usually outnumbered the other physiological groups surveyed, and winter minima were characteristic of some of the physiological groups. A relatively stable density of anaerobic heterotrophic bacteria, as a function of sediment depth, was observed when the incubation temperature was 2 °C. At 37 °C, these anaerobes were not detected, and this was true for sulfate-reducing bacteria at both temperatures.Heterotrophic bacterial isolates from the permanently cold sediments were examined with regard to Gram reaction, the obligate or facultative nature of anaerobes, ability to use ecologically important substrates, psychrophilic type, and temperature range for growth. Isolates recovered at 2 °C were predominantly Gram-negative bacilli, whereas isolates recovered at 37 °C were predominantly Gram-positive bacilli. The anaerobic isolates were mainly Gram-positive bacilli regardless of the isolation temperature, and most of those examined were obligately anaerobic. Many of the isolates tested were positive for gelatinase, chitinase, amylase, and lipase, but none was positive for cellulase. Most of the sediment isolates were facultatively psychrophilic and a considerable fraction of the 37 °C isolates were facultative psychrophiles.

scholarly journals CHARACTERIZATION OF SULFATE REDUCING BACTERIA FROM BIOFILM SULFATE REDUCTION AND CU PRECIPITATION BIOREACTOR (BATCH CULTURE).

2018 ◽  
Vol 2 (2) ◽  
pp. 1
Author(s):  
Tyas Nyonita Punjungsari
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Sulfate Reduction ◽  
Batch Culture ◽  
Microbial Community Structure ◽  
Sulfate Reducing Bacteria ◽  
Zeolite Surface ◽  
Sulfate Reducing ◽  
Reducing Bacteria

The biofilm is a microbial community structure formed on the zeolite surface in a sulfate reduction bioreactor and Cu deposition using a SRB consortium . The biofilm soluble microbial solvent is expected to have the capability in sulfate reduction and Cu deposition. Characterization of isolates is required for the optimization of pure culture . The aim of this study is to isolate and characterize the biofilm sulfate reducing bacteria in the sulfate reduction bioreactor and the precipitation of Cu in Batch Culture by a consortium of Sulfate Reducing Bacteria. The method used in this study cultivation was done by using postgate B medium, isolation was done by diluting biofilm on NaCl salt, bacteria grown on NB and postgate B media, characterization done by morphology and biochemistry. There were 3 isolates of B1 (Metylobacterium ), B3 ( Desulfucoccus ), and B2 ( Desulfobacter ). B3 ( Desulfococcus) has the best ability to reduce sulfate and Cu precipitation.Keywords : Sulfur Reducing Bacteria (SRB), Biofilm, Sulfate, Cu. Received: 26 August, 2017; Accepter: 10 September, 2017 

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