الفهرس 
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Abstract
A polysaccharide was isolated from soybean (Glycine max L. variety Ford) in 2-4% yield, and waS l)uriliQd via its copper complex. Hydrolysis of t he polysaccharide afforded D-galactose. D-xylose, LLarcbinose and L-rhamnoso in tho molar ratio 9:5:5:1 respectively. Periodate oxidation of the polymer resulted in the consumption of twelve molar equivaalents of the oxidant and tho liberation of two molar
equivalents of formic ocid per twenty anhydroaldose unites containing tho above saccharides in the ra.tio referred to above. After oxidation by periodatc and SUbsequent hydrolysis of the polyaldehydic prOduct, D-galnctose and L-arabinose that had escaped oxidat ion wero ubserved to occur in the hydrolysate, thus offorring infJrmntion about the positions of linkages and brnnshing in the polysnccharide. An evaluation of the molecular weight of the polymer waS carried out by troctm0nt with sodium borohydride followed by oxidation by s8dium metaperiodato and subsequent estimation of
(.9.2 -1120) indic ated that pos it ions two and three in some units ccntaining the polymor are not engaged.
The absorption spectrum of the polysaccharido showed that the linkages betweQn tho units were of tho ~ -typo.
In conclusion •. a tentativQ formulation of the polysaccharido was offered~ It is suggested that the soybean (Glycino max L!v&rioty Ford) c~ntnins a polyysacoharide composed of a main straight chain of DDgalactopyranoso units joined by alternate ¥ l-~ and B 1-4 linkages and that branchos containing equal
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numbers of D-xy1opyran~se and L-arabinofuranose units
arc joined to the main chain at every fourth or tifth D-galactopyranose residues. The junction to the
latter residues are through 0-2 Or C-6 of the units. The D-xylopyranose and L-arabinofuranose units are joined such that the latter units are glycosidically joined to positions four of the former units and that the former units are glycosidically joined to positions two or three of the latter units. Tennina1 units in alternate branches are L-rhamnopyranose units ( See xxxvll).