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1

Vitality and implication of natural products from Viburnum Grandiflorum: an eco-friendly approach

100%
Suleman M., Nouren S., Hassan S. M., Faiz A. H., Sahr G. A., Soomro G. A., Tahir M. A., Iqbal M., Nazir A.
Polish Journal of Environmental Studies
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2018
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tom 27
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nr 3
In this study we screened Viburnum grandiflorum for bioactive secondary metabolites and biological activity. Secondary metabolites were detected by phytochemical tests, and biological activity was confirmed through antimicrobial and anti-oxidant assays. Phytochemical screening (alkaloidal, tannins, terpenoids, flavonoids, anthraquinones, and glycosides) was performed with methanol, and aqueous and ethyl acetate extracts. Antibacterial activity against four bacterial strains — staphylococcus auries, Escherichia Coli, Bacillus subtillus, and salmonella typhi – were measured. Methanolic extract showed maximum inhibitory activity with diameter of zone of inhibition (11.66 mm), followed by n-hexane extract (9.33 mm) and then ethyl acetate extract. Four different fungi (Penicillium chrysogenum, Aspergillus flavus, Rhodotorula mucilaginosa, and Stachybotrys chartarum) were also tested against plant stem extract using different solvents. Dimethyl sulfoxide extract showed a maximum zone of inhibition at 20 mg/ml. Anti-oxidant activity of stem extract of Viburnum grandiflorum was evaluated by 1, 1-diphenyl- 2-picryl-hydrazyl (DPPH). Then we measured absorbance, and percentage activity at each concentration was found for three solvent extracts to get Ic50 values. These data support Viburnum grandiflorum as having enough potential to be used safely as an antimicrobial drug.
2

Statistical modeling for the extraction of dye from natural source and industrial applications

100%
Jabeen S., Ali S., Nadeem M., Arif K., Quereshi N., Shar G. A., Soomro G. A., Iqbal M., Nazir A., Siddiqua U. H.
Polish Journal of Environmental Studies
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2019
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tom 28
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nr 4
This study is intended to scrutinize the consequence of extraction conditions of Lawsonia Inermis (henna) leaves on the color strength values of dyed fabric. Extraction pH, M:L ratio, and time were optimized using central composite design (CCD) under response surface methodology (RSM). We investigated how the maximum colour strength values were obtained at pH 6.64 in about 78 minutes extraction with an M:L ratio of 1:44. ANOVA results showed that all the extraction parameters significantly affect the colour strength values of dyed samples. 99% variation in the response was indicated in the 2nd-order regression equation for K/S. The fastness properties with respect to light, washing, and rubbing were quite satisfactory of dyed samples under optimized extraction conditions.
3

Estimating total phenolics in Taraxacum officinale (L.) extracts

81%
Khan A. S., Arif K., Munir B., Kiran S., Jalal F., Qureshi N., Hassan S. M., Soomro G. A., Nazir A., Ghaffar A., Tahir M. A., Iqbal M.
Polish Journal of Environmental Studies
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2019
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tom 28
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nr 1
This study focuses on evaluating total phenolic contents (TPC) in Taraxacum officinale (L.), a member of the family Asteraceae (compositae). The TPC were estimated by Folin-Ciocalteu’s reagent and gallic acid was taken as standard. The amount of phenolics was communicated as gallic acid equivalent (GAE). The TPC varied from 41.47 mg/g to 691.6 mg/g in the Taraxacum officinale (L.) extracts. The maximum phenolic contents were found in hydro-alcoholic extract (691.6 mg/g GAE) in comparison with aqueous extract. These extracts have a significant role as antibacterial and antimicrobial agents.
4

Managing paper and pulp industry by-product waste utilizing sludge as a bio-fertilizer

81%
Fahim S., Nisar N., Ahmad Z., Asghar Z., Said A., Atif S., Ghani N., Qureshi N., Soomro G. A., Iqbal M., Nazir A.
Polish Journal of Environmental Studies
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2019
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tom 28
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nr 1
An enormous amount of waste material (sludge) generated from paper and pulp industries is either dumped or incinerated. However, this pulp is an enriched source of macronutrients and can be employed on agricultural land to improve its fertility. The current study was therefore performed to analyze phosphorus (P) and calcium (Ca) by flame photometer, nitrogen (N) by Kjeldahl method, and magnesium (Mg) by back titration from sludge. The application of sludge significantly increases macronutrients in the plants lady finger (Abelmoschus esculentus) and garden mint (Mentha sachalinensis).We applied primary (initial husk treatment) and secondary (after primary treatment) sludge to observe the growth of Abelmoschus esculentus and Mentha sachalinensis. However, primary sludge showed the highest concentration of nutrients, i.e., 96.5% P, 99.6% N, 86% Ca, and 0.008% Mg. The application of paper and pulp waste to the soil indicates that these bio-solids are good for soil fertility, biomass production, and plant growth; however, they are slightly less efficient than synthetic fertilizers. However, the synthetic fertilizers are probable candidates for holding heavy metals, so these bio-solids can be considered a better source for soil fertility.
5

Sweet lime-mediated decolorization of textile industry effluen

81%
Nouren S., Sarwar M., Muhi-ud-Din G., Yameen M., Bhatti H. N., Soomro G. A., Suleman N., Bibi I., Kausar A., Nazir A., Iqbal M.
Polish Journal of Environmental Studies
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2019
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tom 28
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nr 1
This study looks at using partially purified peroxidase extracted from peels of sweet lime (Citrus limetta) for decolorizing textile industry effluent. The ideal pH and thermal conditions of the enzyme were 7 and 35ºC. The Km and Vmax for guaiacol were 0.66 mM and 6666 μmol/mL/min, respectively. We found that sweet lime peroxidase was very effective in decolorizing textile industry effluent. Almost complete decolorization (>99 %) of effluent was attained at a pH of 5.0, temperature of 55ºC, H₂O₂ concentration of 2 mM, and enzyme dose of 40 U/mL within 60 minutes of incubation. The effluent was also analysed in terms of physicochemical parameters before and after treatment with sweet lime peroxidase. The reduction in toxicity after the enzymatic treatment was evidenced by chemical oxygen demand (COD) and total suspended solids (TSS) values.
6

Investigating the antibacterial activity of POMA nanocomposites

81%
Hussain A., Ahmad M. N., Jalal F., Yameen M., Falak S., Noreen S., Naz S., Nazir A., Iftikhar S., Soomro G. A., Iqbal M.
Polish Journal of Environmental Studies
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2019
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tom 28
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nr 6
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