cover image: Journal of Scientific and Industrial Research. February 1947

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20.500.12592/206c52

Journal of Scientific and Industrial Research. February 1947

1947

In the course of these investigations it has been noted that the extraction of flowers with ether is better suited for the isolation of the essential oil in the form in which it appears to be present in the plant body but that it fails to extract the sterol-glucoside and the colouring matter which are obtained from the alcoholic extract of the flowers. [...] The total essential oil is obtained by steam distillation of the combined residues left on removal of the solvents from the petrol-ether layer and the mother liquors of nimbosterin. [...] The odorescent residues left after removal of the solvent from the filtrate and the combined alcoholic washings of the waxy matter were subjected to steam distillation. [...] Results.—Details regarding the light eposure tests carried out with all the three types of fabrics dyed with each of the five dyes are shown in Table I. Table II shows the relevant figures for the fluidity and tensile strength of nylon exposed and unexposed in the dyed and undyed condition to both the light sources. [...] It would be observed here that although the intensity of the visible light from this source was less than 1/30th of that of the sunlight the light fading action of the two sources were comparable while the tendering action on the fibre is much more pronounced in the ultraviolet light than in the sunlight partcularly with the dyed material.
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Frontmatter
i-ii unknown view
Chemical Examination of Nim Blossoms (Melia Azadirachta Flora)
19-24 Chittaranjan Mitra, P. Rao, Satyendra Bhattacharji, Salimuzzaman Siddiqui view
Action of Light on Some Direct and Vat Dyes Dyed on Nylon
24-28 K. S. Khandheria, B. K. Vaidya view
Enzyme Bates from the Pancreas of Cow Sheep and Pig
28-31 B. M. Das, S. K. Mitra view
Effect of Sunlight on T. N. T. and Tetryl
31-35 B. N. Mitra, M. Srinivasan view
Ultrasonic Velocity in Liquid Mixtures and Compound Formation
35-36 A. L. Rao, A. S. Bhatnagar, M. Pancholy view
Supplement Aromatic Plants of India Part I
i-24 S. Krishna, R. L. Badhwar view

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