This study was conducted to investigate the influence of salicylic acid (SA) on the growth and changes of nucleic acids, protein, photosynthetic pigments, sugar content and photosynthesis levels in the green alga Chlorella vulgaris Beijerinck (Chlorophyceae). The most significant changes in the content of nucleic acids and proteins was observed at the concentration [ 0 -4 M SA between 8 and 12 day of cultivation. This concentration of SA increased the number of cells (about 40 %) and content of proteins (about 60 %) and its secretion to the medium. The slight stimulation of protein secretion occurred on the 12th 4 day of cultivation at concentration 10 M, while in the range of 10 -5 M to 10 -6 M the protein secretion was inhibited. SA also stimulated the content of nucleic acids, especially RNA by 20-60 %, compared with the control. The most stimulating influence upon the contents of chlorophylls a and b (50--70 %), total carotenoids (25-57 %), sugar (27-.41%) and intensity of net photosynthesis (~ 8-33 %) was found at 10 4 M of SA, At the 6 concentration of 10-M SA the slight inhibition of growth and biochemical activity of the algae was recorded at the first days of cultivation.
Introduction. The Institute of Natural Fibers and Medicinal Plants has been carrying out complex research connected with application of natural dyes on knitted fabrics and fabrics. The paper presents the results of the part of the research conducted at the Institute, related to the Project BIOAKOD – Bioactive curing clothing based on natural fibers. Aim. The aim of the project’s task 3 was to develop organic cotton and knitted linen dyeing technology using the extracts obtained from plants. Material and methods. Plant extracts depending on the content of active substances and their precious ingredients they can have the following properties: medicinal, soothing, moistening, anti-inflammatory, regenerative, antiviral, antifungal, antioxidant and protection against UV radiation. Several plants were tested during the project realization. Finally, were obtained the extracts from the following plants: Madder Rubia tinctorium L., Dyer’s greenweed Genista tinctoria L, Weld Reseda luteola L., Dyer's coreopsis Coreopsis tinctoria L., Oak Gall Quercus infectoria Oliv, Chebulic Myrobalan Terminalia chebula L. Results. In the final phase the 9 colours were chosen. The dyeing was performed in semi-industrial conditions in the factory Marko-Kolor. The registered patent is also the effect of this project grant. Conclusions. The interesting range of colours was achieved, and tested extracts showed healing properties.
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