Page 20 - วิจัยการใช้ประโยชน์ไม้สะเดา

ABSTRACT

Analysis of chemical composition of Azadirachta indica Juss. var. siamensis Val. at the

age of 16 years from Lopburi province. Chopped the tree for separating wood, bark and leaves
then ground to sawdust and sifted through 40-60 mesh sieve sizes were analyzed by standard

analysis of pulp and paper, moisture content of the samples were 6-10%. Hot water solubility

after extracted with alcohol-benzene of wood, bark and leaves were value about of 2 %, 8% and
15% by wt. of mfs., respectively. Alcohol-benzene solubility of the samples were value about of

6%, 8-10% and 12%, respectively. The solubility in 1% sodium hydroxide of the samples were

value about of 16%, 37% and 70%, respectively. The content of lignin in the samples were value
of 30-38% by wt. of mfs.. There were very high cellulose content (64.97-66.69%)and very low

ash content (0.49-0.55%) in the wood.

Detection result of the active ingredient groups of Azadirachta indica Juss. var. siamensis

Val. by phytochemical screening of flavonoid glycosides nonvolatile coumarin glycosides and

polyphenol in wood, bark and leaves of Azadirachta indica Juss. var. siamensis Val.

Key words: Chemical constituents, Active ingredient, Azadirachta indica Juss. var. siamensis Val.

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