Polysaccharides in Pollen. II. The Xylogalacturonan from Mountain Pine (Pinus mugo Turra) Pollen.

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Abstract
The polysaccharides in Mountain pine pollen were isolated by alkaline extraction combined with mild ultrasonic treatment. Fractionation of the extract afforded the previously reported xylogalacturonan in an almost pure state with reference to other polysaccharides. By methylation analysis and enzymic and acidic hydrolysis it was shown to consist of chains of [alpha]-(l[forward arrow]4)-linked D-galacturonic acid residues, approximately every 2nd being substituted in the 3-position by a [beta]-D-xylopyranose residue. A few [alpha]-D-galacturonic acid residues might also be linked to the main chains through 3 -positions.