Wyniki wyszukiwania - AGRO

1

Isolation of polynuclear aromatic hydrocarbons from sewage sludges using the extraction method

100%

Bakowski W., Janoszka B.

Polish Journal of Environmental Studies

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1993

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tom 02

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nr 3

Determination of polynuclear aromatic hydrocarbons (PAH-s) in sewage sludges is necessary before utilizing the sludges in agriculture, especially in industrial regions. Separation of PAHs has been the most difficult step of analysis. In this work, PAHs were separated by extraction. The best extraction solvents were chosen after reviewing literature. A new method of determining the partition coefficient has been proposed and applied to check if the chosen solvents were good enough for the present purposes. The results have shown that in the case of methanol and dimethylfor- mamide, extraction was nearly complete but the problems of finding a better solvent and mixing the solvents remained.

2

Use of high-pressure carbon dioxide extraction with modifiers for the preliminary isolation of organic pollutants

88%

Bakowski W.

Polish Journal of Environmental Studies

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1997

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tom 06

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nr 5

The effect of different solvents on extraction with liquid carbon dioxide was studied. Extracted polynuclear aromatic hydrocarbons (PAHs) were applied on Sephadex C-50 gel. The model PAHs were phenanthrene, pyrene and benzo(a)pyrene. It is stated that the percentage of PAH model extractions was diminished when water-immiscible solvents (cyclohexane, chloroform and benzene) and methanol were added to the system. The addition of acetone and dimethylformamide caused increases in extraction percentage. The optimum content of both these solvents was shown to be approximately 0.8% in relation to the volume of C02 used .Under these conditions, a single extraction in the presence of acetone made it possible to recover 67% of phenanthrene, 62% of pyrene and 86% of benzo(a)pyrene, whereas in the presence of dimethylformamide these numbers were 66%, 80% and 9%, respectively.

3

Evaluation of chelating agents as heavy metals extractants in agricultural soils under threat of contamination

88%

Kocialkowski W. Z., Diatta J. B., Grzebisz W.

Polish Journal of Environmental Studies

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1999

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tom 08

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nr 3

4

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Importance of sampling, extraction and preservation for the quantitation of biologically active endotoxin

88%

Laitinen S. K.

Annals of Agricultural and Environmental Medicine

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1999

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tom 06

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nr 1

5

Microwave-assisted extraction of phenolic compounds from coffee (Coffea robusta L. Linden) bee pollen

75%

Quoc L. P. T.

Herba Polonica

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2021

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tom 67

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nr 3

6

Chemical composition of dried Stevia rebaudiana Bertoni leaves and effect of ultrasound-assisted extraction on total steviosides content in extract

75%

Yen N. T. H., Quoc L. P. T.

Herba Polonica

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2021

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tom 67

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nr 1

7

Optimization of extraction of polyacetylenes from Daucus carota L. using response surface modelling (RSM)

75%

Valverde J., Quesada L., Brunton N.

Polish Journal of Food and Nutrition Sciences

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2011

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tom 61

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nr Suppl.1

8

A new approach to the dibetting of bitter lupine seeds

75%

Ciesiolka D., Kolanowska A., Markiewicz M., Michalski Z., Peretiatkowicz M., Wojtaszek P., Gulewicz K.

Bulletin of the Polish Academy of Sciences. Biological Sciences

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1988

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tom 36

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nr 1-3

9

Application of extraction with 0.03 M CH3COOH as the universal method in orchard soil analysis

75%

Domagala-Swiatkiewicz I.

Folia Horticulturae

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2005

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tom 17

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nr 2

10

Investigations on exploitation perspectives and yielding of diverse, antioxidant-rich plant extracts

75%

Forgo P., Kiss A., Muranyi Z.

Polish Journal of Food and Nutrition Sciences

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2011

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tom 61

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nr Suppl.1

11

New green solvents for the extraction of gamma-linolenic acid from Spirulina. A chemometric optimization

75%

Mendiola J. A., Golmakani M. T., Rezaei K., Ibanez E.

Polish Journal of Food and Nutrition Sciences

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2011

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tom 61

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nr Suppl.1

12

Analysis of acquisition and potential usage of conifer cones from Polish seed extraction houses between 2009-2012

75%

Aniszewska M., Kuszpit D.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

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2015

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nr 65 Agric.Forest Eng.

The paper presents data on acquisition of conifer cones from 16 seed extraction plants operating on the territory of Poland during four consecutive years from 2009 to 2012. A high variability was observed in provision of seed units to the seed exaction plants related to specificity of a given seed year. During the four analyzed years the most commonly acquired cone was that of Scots pine – above 1.3 thousand Mg, and the most rare were pines of common fir – 31 Mg. The plants that process the largest number of cones are seed extraction plants in forest districts of Jarocin, Kluczbork and Rytel where over 600 Mg of cones were extracted. Conifer cones, which are usually treated as waste, may be utilized as an energy source. After seed extraction their mass decreases from 16 to 30% depending on the species. The analysis showed that the annual quantity of conifer cones that can be used as an energy source is on average 270 Mg of empty cones.

13

Green ultrasound-assisted extraction of anthocyanin and phenolic compounds from purple sweet potato using response surface methodology

75%

Zhu Z., Guan Q., Guo Y., He J., Liu G., Li S., Barba F. J., Jaffrin M. Y.

International Agrophysics

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2016

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tom 30

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nr 1

14

The degree of aluminum extraction to tea infusions due to its interaction with citric acid

75%

Binczak O., Zmudzinski W.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

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2018

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nr 3

15

Systems of raising deep-water concretions

75%

Sukach M.

Motrol. Motoryzacja i Energetyka Rolnictwa

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2015

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tom 17

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nr 8

16

Extraction of cordycepic acid from the fruiting body of Cordyceps militaris (L.)

75%

Do T. H., Nguyen H. C.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2019

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tom 100

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nr 3

17

Sensitive and selective extraction-free spectrophotometric determination of quetiapine fumarate in pharmaceuticals using two sulphonthalein dyes

75%

Rajendraprasad N., Basavaiah K., Vinay K. B.

Journal of Pre-Clinical and Clinical Research

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2010

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tom 04

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nr 1

18

Extraction from cereal grain soluble proteins with the high inhibitory activities against insects alpha-amylase

75%

Warchalewski J. R., Piasecka-Kwiatkowska D., Madaj D.

Food Science and Technology. Scientific Papers of Agricultural University of Poznan

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1997

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tom 01

19

The suitability of 1M HCl and 2M HNO3 for heavy metals extraction in arable soils under threat of contamination

75%

Diatta J. B., Grzebisz W., Potarzycki J.

Roczniki Akademii Rolniczej w Poznaniu. Melioracje i Inżynieria Środowiska

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1997

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tom 19

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nr 1

20

Microwave methods of sample preparation for the purposes of environmental analysis

75%

Szablewski L., Jastrzebska A., Buszewski B.

Polish Journal of Environmental Studies

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1997

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tom 06

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nr 5

The application of microwave techniques for environmental sample preparation is described. Special attention has been given to the theoretical foundations and the possibilities of using microwave radiation in mineralization and extraction. These techniques are compared with conventional methods and examples of their application are supplied.

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