Temat: toxicity analysis - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: In vitro evaluation of antimicrobial efficacy of silver zeolite against common oral pathogens
Autorzy:: Panda, S.
Rath, S.
Garhanayak, M.
Bal, S.C.B.
Nagarajappa, R.
Powiązania:: https://bibliotekanauki.pl/articles/2086492.pdf
Data publikacji:: 2021
Wydawca:: Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:: silver zeolite
oral pathogens
antimicrobial efficacy
toxicity analysis
pharmaceutical applications
Opis:: Objectives. Antimicrobial efficacy and toxicity analysis of 5 different concentrations of silver zeolite (SZ) compound against 5 common oral pathogens Streptococcus mutans, Streptococcus pyogenes, Lactobacillus sp., Staphylococcus aureus, Candida albicans. Material and methods. The antimicrobial efficacy of 5 different concentrations of SZ was tested against 5 common oral pathogens using the agar well diffusion method and the MIC and MBC values were determined using the micro broth dilution method. The toxicity of all 5 different concentrations was evaluated using brine shrimp assay and lethal concentration (Lc50) value was determined. Results. At 10 μg/mL the antimicrobial activity of SZ was almost negligible. The antimicrobial activity was observed in an increasing trend against all the test microorganisms as the concentration increased. At 75 & 100 μg/mL the zone of inhibitions was more than the control. Furthermore, MIC and MBC values of SZ with concentrations 25, 50, 75, and 100 μg/mL were determined and recorded. SZ was equally effective against all the test organisms. The LC25 (lethal concentration25) value was 1.6 μg/mL, whereas the LC50 value was 1.77 μg/mL and the LC75 value was 1.90 μg/mL, calculated from the probit computational method. Conclusion. SZ has the potential to change the ongoing system and bring about a revolution as an antimicrobial drug. However, the dose must be regulated as it can be toxic in higher concentrations. SZ compounds with the correct study of physicochemical properties and toxicity analysis can increase their pharmacological use and market value.
Źródło:: Roczniki Państwowego Zakładu Higieny; 2021, 72, 2; 203-208
0035-7715
Pojawia się w:: Roczniki Państwowego Zakładu Higieny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Ocena pobrania kadmu i olowiu z warzywami przez konsumentow wwojewodztwie katowickim
Autorzy:: Lorek, E
Powiązania:: https://bibliotekanauki.pl/articles/875695.pdf
Data publikacji:: 1994
Wydawca:: Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:: olow
analiza zywnosci
zywnosc
woj.katowickie
zanieczyszczenia zywnosci
kadm
konsumenci
toksycznosc
warzywa
produkty spozywcze
lead
food analysis
food
Katowice voivodship
food contaminant
cadmium
consumer
toxicity
vegetable
food product
Opis:: W pracy dokonano oceny stopnia pobrania występujących w warzywach metali ciężkich takich jak Cd i Pb przez konsumentów z czterech grup gospodarstw domowych w województwie katowickim. Analizie poddano tę grupę warzyw, która jest w tym regionie produkowana, a także sprowadzana na rynek województwa katowickiego przez sklepy Wojewódzkiej Spółdzielni Ogrodniczej z innych rejonów kraju.
The amounts of Cd and Pb consumed with vegetables were determined in four groups of households: workmen, workmen-peasants, farmers and pensioned workers and persons receiving disability allowances. The chemical analysis was done, in the first place, of vegetables with edible roots in which Pb and Cd were determined by atomic absorption spectrophotometry. The vegetables were bought in 1986-1987 by the Province Gardeners Cooperative in the Province of Katowice (mining and industrial region) and from the Province of Katowice and Warsaw. The amount of Cd or Pb found in weight unit of a given vegetable multiplied by the amount of this vegetable consumed in a week served as a measure of the amount of these metals taken by the consumer. After comparing of this amount with the acceptable dose the per cent of this dose obtained from vegetables was calculated. The study showed that the vegetables brought from other provinces than Katowice contained several times less Cd and Pb than those grown in the Province of Katowice. The lowest intake of Cd and Pb with vegetables was found in the households of workmen and the highest one in the households of farmers who consumed nearly exclusively vegetables grown on their farms. The vegetables from the Province of Katowice accounted in farmer families for 40% of the acceptable maximal weekly intake of cadmium, and the intake of lead was even above this maximal level. The differences in the weekly intake of these metals between the studied groups of households were due to differences in the amounts of consumed vegetables. Improvement is postulated of the control of the quality of vegetables in the Silesian market, and vegetables should be brought preferably from these regions where Cd and Pb content in vegetables is safe.
Źródło:: Roczniki Państwowego Zakładu Higieny; 1994, 45, 1-2; 37-43
0035-7715
Pojawia się w:: Roczniki Państwowego Zakładu Higieny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Zawartosc fluoru i olowiu w wybranych warzywach uprawianych w zasiegu emisji zwiazkow tych pierwiastkow przez Hute Szkla Gospodarczego [ HGS ] Irena w Inowroclawiu
Autorzy:: Zommer-Urbanska, S
Bojarowicz, H.
Kuczynska, I.
Powiązania:: https://bibliotekanauki.pl/articles/873175.pdf
Data publikacji:: 1994
Wydawca:: Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:: zagrozenia zdrowia
zywnosc
Inowroclaw
dzialki
Huta Szkla Gospodarczego Irena
zanieczyszczenia srodowiska
warzywa
olow
analiza zywnosci
fluor
uprawa roslin
toksykologia zywnosci
toksycznosc
health hazard
food
Inowroclaw town
garden plot
environment contaminant
vegetable
lead
food analysis
fluorine
plant cultivation
food toxicology
toxicity
Opis:: Metodami spektroskopowymi oznaczono zawartość fluoru i ołowiu w niektórych warzywach zebranych 1990 roku z Pracowniczych Ogródków Działkowych (POD) „Transportowiec" odległych ok. 500 m od HSG ,,Irena" oraz z POD „Irena"położonych w odległości ok. 2600 m od emitorów huty. Otrzymane wyniki badań porównano z wynikami badań z poprzednich ośmiu lat jak i z analogicznymi badaniami roślin zebranych w 1989 roku z POD „Podzamcze" w Szczytnej położonych w bezpośrednim sąsiedztwie Huty Szkła „Sudety".
By means of spectroscopy fluorine and lead were determined in selected vegetables gathered in 1990 from Workers' Gardening Plots "Transportowiec" lying about 500 m from the Irena glass plant and similar plots "Irena" situated about 2600 m from the emitters of the plant. The obtained results were compared with those of similar measurements in the preceding 8 years, and with analogous determinations in the vegetables gathered in 1989 from "Podzamcze" gardening plots in Szczytna in immediate vicinity of the glass plant "Sudety". The study extended over many years showed that in the vicinity of such plants, the soil, the vegetables and fruit are contaminated with fluorine and lead. Moving of "Irena" gardening plots from 50 - 350 m from the plant to a distance of 1800 m from it caused that only the parts of the vegetables above soil level contained higher amounts of fluorine and lead. Certain above-soil parts of the plants from the "Podzamcze" gardening plots contained fluorine in amounts exceeding the acceptable level. Most vegetables, both roots and higher parts, were contaminated with lead, indicating that the soil was contaminated with lead also.
Źródło:: Roczniki Państwowego Zakładu Higieny; 1994, 45, 1-2; 13-18
0035-7715
Pojawia się w:: Roczniki Państwowego Zakładu Higieny
Dostawca treści:: Biblioteka Nauki

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