P. P. Jain , N. P. Dobhal , R. P. Sethi , K. S. Ayyar

Abstract

Kernels constituting 45.5% of seeds of Albizia procera, Benth yielded 16.8% of a fixed oil which had acid value, 13.66; saponification niue, 178.28; iodine value (Wij's method), 102.51 and unsaponifiable. Matter, 4.11 per cent. Fatty acid composition. As determined by glc, is palmitic acid, 25.40; stearic acid, 4.93; oleic acid, 20.18; linoleic acid, 44.45; arachidic acid, 2.80 and behenic acid, 2.24 per cent. Fatty acid composition of the prescnt sample tallies to some extent with the results reported by Joshi et al. from Raipur (M.P), having linoleic acid as the major constituent wbich is also important from the nutritional point of view. Farooq et al. from Aligarh have reported oleic acid as the major constituent (50.89%).

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P. P. Jain , N. P. Dobhal , Rajendra Pal , K. S. Ayyar

Abstract

Results of analysis carried out on 31 forestry species have shown that oil contents of seeds of Abies pindrow. Picea smithiana. Pirus roxburghii, Prinsepia utilis, Schima wallichii and Viburnum cylindricum range from 18.77 to 28.7% and hence may be considered as good for their commercial exploitalion provided sufficient quantities of these seeds can be made available at reasonable rates. Seeds of Adenanthera microsperma and Albizia procera are hard. Hence special type of decorticators are required for separating the kernels. Seeds of Lannea coromandelica and Michelia champaca contain low percentages of kernels the oil contents of which are good. The seeds of other species cannot be considered as oil seeds.

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R. S. Bhandari , Jia Lal , K. S. Ayyar , Pratap Singh

Abstract

Methanol extractives of neem seed and nine chromatographic fractions (F₁, - F₁₀) were tested against poplar defoliator P. cupreata for their antifeedant activity. Preliminary studies indicate antifeedant activity by Methanol extract, Fraction 2 and Fraction 10. These three active extractives were further tested following method of Nakanishi. Five replications of ten insects each were used for test. The methanol extract and fraction 2 were found significantly effective gustatory phagodeterrent when compared to fraction 10 and controls. These extractives can be used for foliage protection of Populus deltoides against P. cupreata.

Keywords

Neem Seed Extractives, Pygaera Cupreata, Antifeedant Activity.

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P. P. Jain , N. P. Dobhal , K. S. Ayyar

Abstract

The kernel (48.8% of seeds) of Olea dioica Roxb received from Nasik (Maharashtra) yielded 24.54% of a fixed oil' having refractive index' 1.4369/25°C; acid value' 42.35' saponification value' 208.97 and Iodine value' 87.67. Gas-liquid chromatographic analysis of the mixed acids has shown the fatty acid composition as palmitic' 24.10%; arachidic' 7.93%; behenic' 0.77%; Oleic' 41.45%; linoleic' 15.04% and others (unidentified acids), 10.71%. The seed oil may be recommended for edible use after ascertaining its non-toxic nature.

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Kuldip Bhatia , Jia Lal , K. S. Ayyar

Abstract

Bark samples collected from the trunk portion of mature trees belonging to 31 species were examined for the yield in which oxalic acid could be isolated from them. The bark of Tectona grandis of more than 40 years of age gave oxalic acid in 8.3% to 15.55%) yield. While the bark of Toon ciliata collected from trees growing in the campus of Forest Research Institute was found to contain rich deposits of oxalates (yield of oxalic acid 10.86% to 18.98%), samples of the bark drawn from trees growing in other parts of India gave oxlic acid only in moderate yields of 5.15% to 10.87%. Barks of other species either did not give any oxalic acid or gave it in meagre quantities.

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P. L. Soni , Anuradha Agarwal , K. S. Ayyar

Abstract

no abstract

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Kuldip Bhatia , Jia Lal , A. S. Gulati , K. S. Ayyar

Abstract

no abstract

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R. M. Dobiiai , K. S. Ayyar , P. C. Beri

Abstract

Dekusked seeds of Prosopis cineraria on solvent extraction yield 7.6 percent fat. Fatty acid composition of the fit and the amino acid make-up of the proteins isolated from fat free kernels are reported.

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Kuldip Bhatia , Jia Lal , K. S. Ayyar

Abstract

Essential oil from the heartwood of Cryptomeria japonica was obtained by steam distillation of the petroleum ether (60-80) extract of the heartwood. Its infrared spectrum and gas-liquid chromatographic analysis indicated the presence of at least 14 compounds with hydroxyl and/or carbonyl groups. Further work on the isolation and identification of individual compound is in progress.

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Kuldip Bhatia , K. S. Ayyar

Abstract

The paper describes the various important uses and methods of preparing oxalic acid. Merits of the method of making oxalic acid using Terminalia barks has been discussed. Some suggestions to make the industry viable and job oriented have been given.

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