galactan

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“
Schultze and Maxwell state that raw coffee contains galactan, mannan, and pentosans, the latter present to the extent of 5 percent in raw and 3 percent in roasted coffee.

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  1. A gummy substance, C6H10O5 (γ-galactan), allied to manna, which is extracted from the seeds of legumes and is formed to a small extent during certain fermentations. It is oxidized to mucic acid by means of nitric acid and yields galactose on hydrolysis.

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Examples (1)

  • Schultze and Maxwell state that raw coffee contains galactan, mannan, and pentosans, the latter present to the extent of 5 percent in raw and 3 percent in roasted coffee. —  All About Coffee
 

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