Abstract-A total of (218) samples from Eleven different foods were processed between October 2016 and February 2017 which include (Tomato, Chicken meat, red meat, falafel, potato, bread, eggplant, cabbage, celery, cucumber and onion
Equilibrium biosorption of mercury (II) onto new developed biosorbent (1,10-phenanthroline-graft- cell/Filamentous fungi) in both free, immobilized and dead cell were investigated. The product was characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). In this work several isotherm models applied to predict the process design for the adsorption system. Hill, Sips, Langmuir and Freundlich utilized to determine the adsorption parameters, the equilibrium data fitted well to Hill and Sips isotherm models followed by Langmuir. Meanwhile, the maximum adsorption capacity proposed by Hill model was 78.67(mg/g) and Sips 78.42(mg/g) were lower than Langmuir models which was 85.16(mg/g). In other hand, the equilibrium data almost fitted to the Freundlich isotherm supporting the postulation of the heterogeneous shape of biosorption to certain range. Hence, On the bases of Langmuir model the biosorption of Hg2+ onto 1,10-phenanthroline-graft- cell/Filamentous was in the favourable area and that confirmed by calculating the separation factor (RL< 1). Nevertheless, new isotherm (Eq. 4) has been derived by the combination of a Langmuir and Freundlich models. The new model agreed well enough (R2 = 0.9863) with the experimental data.
The total phenolic compound and fatty acid profiles of lipids from microalgae are unique. The present study was designed to investigate aqueous, ethanolic and acetone extracts of several algae (Spirogyra sp., Spirulina sp.,Chlorella sp and Chara sp.) for their antioxidant capacities of the crude extracts and fractions by radical scavenging activity against the stable radical 1,1-diphenyl-2-picrylhydrazyl DPPH as well; total phenolic content. The results showed that Spirulina sp. indicated significantly higher total phenolic compound and antioxidant activities compared to the other species (P < 0.05) and acetone extracts showed higher quantity among three extracts. The fatty acids analysis using High performance liquid chromatography –HPLC showed the presence of palmitic acid, stearic acid, oleic acid, and linoleic acid, palmitic acid showed high quantity than other fatty acid classes in all studied algae. This study concluded that high antioxidant capacity of microalgae could be inspected for different industrial applications.
The control of wastewater pollution has become of increasing importance in recent years. The release of dyes into the environment constitutes only a small proportion of water pollution, but dyes are visible in small quantities due to their brilliance. In this study Spirulina subsalsa and Scenedesmus ecornis microalgae isolated from Chnarok and Taq-Taq Koya city and its ability to uptake different dyes. Batch studies were conducted at separate biosorbent doses ,dye concentration, pH, temperature and agitation speed. Optimum adsorption of dyes by Spirulina subsalsa and Scenedesmus ecornis showed in reactive yellow (89.3%, 90.4%) respectively at 50 mg l-1, 30℃, pH 8, 150 rpm, dosage 1.2 g ml-1.
Back ground and Objectives: Milk is a highly nutritious food that serves as an excellent growth medium for a wide range of microorganisms. Rapid, simple and inexpensive microbiological quality determination methods including Methylene Blue Reduction (MBRT) test could be commonly used as a quick method to assess the microbiological quality of raw and pasteurized milk. The aim of study is to determine quality of kids milk using Methylene Blue Dye Reduction Test Methods: A total of 37 samples comprising of kids milk collected at different levels of collection and processed. Accordingly 12 different milk samples from hypermarket, 8 different milk samples from unlicensed hawker (retail market), 11 different samples with additives from hyper market samples and 6 different samples with high p rice. Samples were collected. One ml of the Methylene Blue Thiocyanate solution added into a test tube then 10 ml of milk poured into test tube. Tubes incubated at 37 o C Results: Results showed that all types of milk that purchased from super market, local market and high price milk types shown no change of methylene Blue color appear on the base of time, that indicate very good quality of the milk. On the base of milk types with additive materials only one milk showed change in colour but after confirm test the colour remained blue and not changed.
Conclusion:Methylene blue reduction test is rapid economic method that can be used for detection of milk quality. Approximately all the kids of milks that is purchased in our market and local markets showed sterility and the source contamination if take place may be by storage condition and transvers vehicle.
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