Temat: plant dyes - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Barwniki roślinne w estrach metylowych kwasów tłuszczowych. Część 1: Metodyki badań barwników roślinnych
Plant dyes in fatty acid methyl esters. Part 1: Methods of test of plant dyes
Autorzy:: Burnus, Z.
Powiązania:: https://bibliotekanauki.pl/articles/1835234.pdf
Data publikacji:: 2018
Wydawca:: Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Tematy:: barwniki roślinne
chromatografia cieczowa
biopaliwa
plant dyes
liquid chromatography
biofuels
Opis:: Przedstawiono nowy obszar badań substancji śladowych w estrach metylowych kwasów tłuszczowych wytworzonych z oleju rzepakowego, wykorzystywanych jako samoistne paliwo lub jako biokomponenty paliwa do silników z zapłonem samoczynnym. Dokonano przeglądu literatury w zakresie zastosowania techniki HPLC do badania różnych olejów roślinnych pod kątem zawartości barwników roślinnych. W odniesieniu do uzyskanych wyników badań olejów roślinnych, dla celów przyszłościowych badań, wytypowano barwniki roślinne, które mogą występować w handlowych próbkach FAME. Zebrane informacje wykorzystano przy doborze metodyki badania barwników roślinnych w próbkach FAME wytworzonych z oleju rzepakowego.
A new area of research of trace components in fatty acid methyl esters obtained from rapeseed oil, for use as a fuel or as a biocomponent of fuel for diesel engines is presented. A review of the literature in the area of the use of HPLC technique for the determination of selected plant dyes in various vegetable oils was done. Regarding the available results of vegetable oil tests, plant dyes were selected. As a result of the review of analytical methods, the methods for the determination of plant dyes in commercial FAME samples produced from rapeseed oil were selected.
Źródło:: Nafta-Gaz; 2018, 74, 5; 406-411
0867-8871
Pojawia się w:: Nafta-Gaz
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Extraction of Dyes from Petrocarpus santalinus and Dyeing of Natural Fibres Using Different Mordants
Ekstrakcja barwników z Petrocarpus santalinus i barwienie naturalnych włókien przy użyciu różnych zapraw farbiarskich
Autorzy:: Mariselvam, R.
Athinarayanan, G.
Ranjitsingh, A. J. A.
Nanthini, A. U. R.
Krishnamoorthy, R.
Alshatwi, A. A.
Powiązania:: https://bibliotekanauki.pl/articles/233547.pdf
Data publikacji:: 2018
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:: Petrocarpus santalinus
natural fibres
mordant
plant dyes
Pterocarpus santalinus
włókna naturalne
zaprawa
barwniki roślinne
Opis:: Aqueous extraction of natural dyes from Petrocarpus santalinus tree wood and dyeing of the following natural fibres: banana fibre, screw fine fibre, pineapple fibre, sisal fibre, korai and palm leaf using various mordants to fix the colour in the fibre materials were performed. Salt, sodium bicarbonate, oxalic acid, tannic acid, ferrous ammonium sulphate, stannous chloride (tin metal powder), alum and tamarind (Tamarindus indica) were used as a mordant for the dying of the natural fibres. Petrocarpus santalinus dye was effectively dyed on natural fibres using different mordants, producing different colours like tomato, maroon, orange red, chocolate, brown, quarry red, black, brick red, tile red, terra colla, sunbaked clay, gray, brick red, victorian red, firebrick, brown, crimson and orange, using these mordants.
W artykule omówiono wykonanie wodnej ekstrakcji naturalnych barwników z drzewa Petrocarpus santalinus oraz barwienie włókien naturalnych, m.in. bananowca, ananasa, sizalu, korai i liści palmowych przy zastosowaniu różnych zapraw farbiarskich, których użycie miało na celu utrwalenie koloru w materiałach włóknistych. Jako zapraw farbiarskich użyto soli, wodorowęglanu sodu, kwasu szczawiowego, kwasu garbnikowego, siarczanu żelazowo-amonowego, chlorku cyny (proszek cyny metalicznej), ałunu i tamaryndowca (Tamarindus indica). Włókna naturalne skutecznie zabarwiono barwnikiem Petrocarpus santalinus przy użyciu różnych zapraw uzyskując różne kolory takie jak: pomidorowy, bordowy, pomarańczowy, czerwony, czekoladowy, brązowy, czarny, czerwony ceglany, terra colla, glinka opalana, szara, ceglastoczerwona, wiktoriański czerwony, ognisty, brązowy, szkarłatny i pomarańczowy.
Źródło:: Fibres & Textiles in Eastern Europe; 2018, 5 (131); 20-23
1230-3666
2300-7354
Pojawia się w:: Fibres & Textiles in Eastern Europe
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Biodegradable polyester blends containing multifunctional substances of plant origin
Autorzy:: Latos-Brozio, M.
Masek, A.
Powiązania:: https://bibliotekanauki.pl/articles/24200609.pdf
Data publikacji:: 2022
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: biodegradable polyesters
PLA/PHB blends
plant additives
dyes
stabilisers
biodegradowalne poliestry
mieszanki PLA/PHB
dodatki roślinne
barwniki
stabilizatory
Opis:: Purpose: The research aimed to develop polyester materials based on biodegradable polymers (blends of polylactide PLA and poly(hydroxybutyrate) PHB) with additives of plant origin. Substances such as chlorophyll, β-carotene, tannic acid and comparative Magenta KeyplastTM dye have been added as stabilisers and dyes of polymer blends. Design/methodology/approach: The samples were subjected to thermooxidation and UV aging. Based on changes in mechanical properties, the ageing coefficients K of the composition were calculated. In addition, the colour change was analysed. Thermal transformations of the samples were also determined by differential scanning calorimetry in order to determine the glass transition temperature, melting and crystallisation of materials, as well as to compare the resistance to thermal oxidation of polymeric composition. Findings: Chlorophyll, β-carotene and tannic acid increased resistance to thermal oxidation of PLA/PHB blends (higher oxidation temperatures in the DSC analysis, indicating a higher resistance to thermal oxidation). Materials with chlorophyll, β-carotene and Magenta organic dye had higher ageing coefficientsand, thus, better resistance to degradation. The sample containing β-carotene showed a significant colour change under the influence of heat and UV ageing. Research limitations/implications: Concerned the short ageing time of the samples, which may have been insufficient to analyse the degradation process of polymer compositions and the effects of plant stabilising substances. In the future, the ageing time of materials can be extended, and other types of degrading factors can be used. Practical implications: Practical implications include the possibility of using PLA/PHB blends as packaging materials. Adding substances of plant origin allowed obtaining colorful, visually attractive materials, similar to the Magenta dye dedicated to using in polymers. Moreover, the additives allowed control of the degradability of the samples. Originality/value: The originality of the research was the preparation of PLA/PHB polyester blends with the addition of plant substances as multifunctional agents (stabilisers and dyes).
Źródło:: Archives of Materials Science and Engineering; 2022, 119, 1; 5--11
1897-2764
Pojawia się w:: Archives of Materials Science and Engineering
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Nowoczesne techniki i technologie inżynierii środowiska
Novel Methods and Technologies in Environmental Engineering
Autorzy:: Miksch, K.
Cema, G.
Felis, E.
Sochacki, A.
Powiązania:: https://bibliotekanauki.pl/articles/1818151.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: tlenowe granule
zewnątrzkomórkowe polimery
częściowa nitryfikacja
proces Anammox
zaawansowane procesy utleniania
systemy hybrydowe
oczyszczalnie hydrofitowe
dekoloryzacja barwników
bioremediacja gruntu
mikoryza roślin
techniki biologii molekularne
PCR
FISH
aerobic granules
granule formation
extracellular polymeric substances
partially nitrification
anammox process
advanced oxidation processes
hybrid systems
constructed wetlands
decolorization
synthetic dyes
soil bioremediation
plant mycorrhization
molecular biology techniques
Opis:: The novel technologies used in environmental engineering were discussed in this paper – the formation of aerobic granules, the Anammox process, the advanced oxidation processes, the use of fungi for dyes decolorization, constructed wetlands, the soil phytoremediation supported by rhizosphere microorganisms and the use of molecular biology technique in environmental engineering. The structure of granular sludge is influenced by EPS production. The average diameter and density of biogranules increase due to EPS production. Although polysaccharides are essential, proteins were found to be the predominant component of aerobic granular sludge. Compared to loosely bound EPS (LB-EPS), tightly bound EPS (TB-EPS) showed more significant correlations with granules formation. This investigation will contribute towards a better understanding of the behavior and composition of EPS in sequencing batch reactors. The traditional nitrification and denitrification processes proceed well with typical municipal wastewater. Nevertheless, there are also nitrogen-rich wastewater streams like landfill leachate or reject waters from dewatering of digested sludge, for which traditional nitrification/denitrification can be generally ineffective due to free ammonia inhibition of nitrification and unfavorable biodegradable carbon content for denitrification. Because of high requirements for oxygen and the necessity for addition of external carbon source, treating such nitrogen-rich streams with nitrification/denitrification would become expensive and unsustainable. The least resources consuming pathway for the conversion of ammonium to nitrogen gas is a combination of partial nitrification and the Anammox process. The main advantages of this process compared to the conventional nitrification/denitrification are: low sludge production, decrease of the aeration costs by almost 60% (only half of the ammonia is oxidized to nitrite in the nitritation process without further oxidation to nitrate), and no need for external organic carbon source addition (Anammox process). Furthermore, anammox bacteria oxidize ammonium under anoxic conditions with nitrite as the electron acceptor, and converse energy for CO2 fixation. Additionally, the biomass yield of the Anammox process is very low (0.08 kg VSS kg NH4-N-1 in comparison to 1 kg VSS kg NH4-N-1 in conventional nitrification/denitrification process) consequently, little sludge is produced. The low sludge production is another factor that contributes to the substantially lower operation costs compared to conventional denitrification systems. Advanced oxidation processes (AOPs) are oxidative methods which are based on the generation of the hydroxyl radicals, which are very reactive and less selective than other oxidants. In the wastewater treatment technology, AOPs can be used in a combination with conventional biological techniques (so called hybrid processes), as pre- and post- treatment processes. The advanced oxidation processes have been used in order to increase the biodegradability and also detoxification of the wastewater. The ability of fungi to degrade lignin-cellulose debris is well known. In addition to these natural molecules they may also degrade synthetic compounds, including synthetic dyes. High effectiveness of Evans blue and brilliant green mixture removal by all tested strains was demonstrated. The process was the most effective and fast in shaken conditions. Finally strain MB removed 90% of tested mixture in shaken samples after 96h. It was the best result reached among all the strains used in the experiment. High removal efficiency was accompanied by a decrease of toxicity (from V class to III class in test with D. magna and from IV class even to non-toxic in test with L. minor). The highest decrease of phytotoxicity was noticed in samples with shaken biomass in which the effect of dyes mixture elimination was the best. The research indicates very high potential of tested strains for decolorization and detoxification of dyes mixture. Constructed wetlands are man-made system mimicking the process occurring in natural wetlands. These systems are considered to be an alternative to more technically advanced waste water treatment technologies. The development of constructed wetlands is envisaged to pursue the following directions grouped according to: the type of the waste water to be treated, target contaminants, treatment intensification methods, ancillary benefits and the locality. Mycorrhiza fungi can be used for phytoremediation proccess. They support plant growth by lowering the stress caused by the lack of phosphorus and water. They produce enzymes participating in several stages of xenobiotics decomposition, which is helpful in their further biodegradation performed by the other rhisospherical organisms. The natural colonisation of PAHs contaminated soil is a long-term process. It could be shortend by adding fungal propagules as an inoculum to the soil. Fungi used for the injections should be isolated from PAHs contaminated soil. That guarantees their survival and development in the contaminated environment. The level of PAHs elimination from soil depends on a type of bioremediation modification used. It was shown that the best results are obtained with monocotylous plants combined with bacterial and fungal biopreparations obtained from contaminated soil. The symbiosis of mycorrhiza fungi with monocotylous plants caused ca. 40% increase of 3, 4, 5 and 30% of 6-ring hydrocarbons removal from soil in comparison with the conventional methods. Important aspect of environmental protection and engineering is the possibility for qualitative and quantitative monitoring of complex microbial communities, responsible for biotechnological processes, such as: soil bioremediation, wastewater treatment or composting. Due to the fact that most of the environmental bacteria cannot be grown in the laboratory conditions molecular techniques are widely used in environmental engineering. Among these methods the Polymerase Chain Reaction (PCR)-based and hybridization-based (such as Fluorescent in situ Hybridization; FISH) techniques are known to be the most useful.
Źródło:: Rocznik Ochrona Środowiska; 2015, Tom 17, cz. 1; 833-857
1506-218X
Pojawia się w:: Rocznik Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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