REVIEW OF LITERATURE

7
The yellowish white wax was distributed between petroleum ether and
90% methanol (MeOH) and the petroleum ether layer chromaographed
on Al2O3 (eluting finally with benzene) to give a compound, C20H40 (m.p.
51.5-2.5°, bromide, m.p 58-9°), hepta cosanol, m.p. 80-1° and
p-nitrobenzoate (m.p. 70-1°) identical with synthetic compound.
Yasue and Mivazaki (1959) described resins of Cedrus labani, Larix
kaempferi, Picea excelsa, P. morinda, P.koyamai and Tsuga canadensis.
In alcoholic solution they showed maximum absorption at 229, 282 and
315 nmμ and in alcoholic alkaline solution showed maximum absorption
at 250, 295 and 360 nmμ. They were all positive for the ferric chloride
test.
Saxena et al. (1964) described that Cedrus deodara trees (height
between 4-10,000 ft), are found growing in north west Himalayas. They
are most important conifers (hight between 5-8,000 ft). Seed oil contains
fatty acid compounds that are saturated acids C18 8.5 %, Palmitoleic acid
40.5 %, Oleic acid 41.5 and Linolic acid 9.5 %. The seeds contained
5.7% moisture, oil content 33.5%, acid value 46.7, saponification value
173.8, iodine no. 90.8 unsaponified matter 18.5 % The urea adduct
method, i.e. the step wise addition of urea with methanol as solvent is
described in detail.