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Phytoextraction of Nickel by Selected Ornamental Plants

Bosiacki M., Wojciechowska E.

Ecological Chemistry and Engineering. S

2012

Vol. 19, nr 3

331-345

In the pot experiment the effect of increasing doses of Ni (the control, 25, 50, 75, 150, 300 mg ź dm–3 substrate) on the content of this metal in individual organs of aboveground parts was investigated in three selected species of ornamental plants: Aztec marigold (Tagetes erecta L.), sunflower (Helianthus annus L.) and love-lies-bleeding (Amaranthus caudatus L.). A significant effect of increasing Ni doses on the content of this metal was found in individual organs of selected species. In Tagetes erecta L. and Amaranthus caudatus L. the highest amounts of nickel were accumulated in leaves, while in sunflower growing in the substrate, to which nickel was introduced at 25, 50, 75 and 150 mgźdm–3, the highest amounts of this metal were accumulated in inflorescences. Among the analyzed species of ornamental plants growing in the substrate with no addition of this metal and in the substrate with an addition of 25 and 50 mg Ni ź dm–3 the highest nickel uptake was observed in Tagetes erecta L. plants. For the substrate with an addition of 75, 150 and 300 mg Ni ź dm–3 the biggest nickel accumulation was recorded in Amaranthus caudatus L.

W doświadczeniu wazonowym badano wpływ rosnących dawek Ni (kontrola, 25, 50, 75, 150, 300 mg ź dm–3 podłoża) na zawartość tego metalu w poszczególnych organach części nadziemnych trzech wybranych gatunków roślin ozdobnych: aksamitka wyniosła (Tagetes erecta L.), słonecznik ogrodowy (Helianthus annus L.), szarłat zwisły (Amaranthus caudatus L.). Stwierdzono istotny wpływ rosnących dawek Ni na zawartości tego metalu w poszczególnych organach wybranych gatunków. Tagetes erecta L. i Amaranthus caudatus L. najwięcej niklu akumulowały w liściach, natomiast słonecznik ogrodowy rosnący w podłożu, do którego wprowadzono nikiel w ilości 25, 50, 75 i 150 mgźdm–3, najwięcej tego metalu akumulował w kwiatostanach. Spośród badanych gatunków roślin ozdobnych rosnących w podłożu bez dodatku metalu oraz w podłożu z dodatkiem 25 i 50 mg Ni ź dm–3 największym pobraniem niklu charakteryzowały się rośliny Tagetes erecta L. W podłożu z dodatkiem 75, 150 i 300 mg Ni ź dm–3 największe pobranie niklu stwierdzono u Amaranthus caudatus L.

Extraction of natural dyes from african marigold flower (Tagetes erecta L.) for textile coloration

Jothi D.

Autex Research Journal

2008

Vol. 8, no. 2

49--53

African marigold [Tagetes erecta L.], a major source of carotenoids and Lutin, is grown as a cut flower and a garden flower, in addition to being grown for its medicinal values. Marigold flowers [Tagetes], which are yellow to orange red in colour, are a rich source of lutein, a carotenoid pigment. Nowadays, Lutein is becoming an increasingly popular active ingredient used in the Food Industry and Textile coloration. This pigment has acquired greater significance because of its excellent colour value. Although marigold flower extract has been used in veterinary feeds, the potential use of marigold as a natural textile colorant has not been exploited to its full extent. This is due to the lack of information on its safety, stability, and compatibility in textile coloration. In this study, an experiment was conducted to study the use of an extract isolated from marigold as a natural dye. The dye potential of the extract was evaluated by dyeing, using the flower, in 100 % cotton and silk fabrics under normal dyeing conditions. Studies of the dyeability, wash fastness, light fastness, and colour hue were undertaken. The, L,a and 'b' of materials dyed using the extract were studied with the use of Computer Colour Matching software. The surface colour was not affected by washing, and the quality of the flower was maintained even washing at 60o C for 30 minutes. Studies have indicated that the change of some of the colors have been noticed after washing with soap. Most of the metal salts exhibited the highest K/S values, due to their ability to form coordination complexes with the dye molecules. These findings reveal that the extract of Marigold flower can be used for coloration of !00 % cotton, silk, and wool fabrics. This article deals with the chemistry, processing, and stability of the pigment and its applications in textile coloration.