The Chemistry of Foods: Tea, coffee, cocoa, sugar, etcCommittee of Council on Education, 1881 - Food |
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Page 7
... dissolves rather freely in hot water , less so in cold water and alcohol , and with still greater difficulty in ether . It is altered by boiling with nitric acid , the product forming , with vapour of ammonia , a coloured substance ...
... dissolves rather freely in hot water , less so in cold water and alcohol , and with still greater difficulty in ether . It is altered by boiling with nitric acid , the product forming , with vapour of ammonia , a coloured substance ...
Page 8
... dissolved by alkalis ; but its separation by this means from the cellulose of the leaf is unsatisfactory . The cellulose of tea is readily acted on by the fixed alkalis , so that the albumin can be only partially recovered in an impure ...
... dissolved by alkalis ; but its separation by this means from the cellulose of the leaf is unsatisfactory . The cellulose of tea is readily acted on by the fixed alkalis , so that the albumin can be only partially recovered in an impure ...
Page 17
... dissolved in a little water , and left to re - crystallize . The mother liquor still contains a little theine ... dissolved in warm water and made up to 1 litre ; then I grain of the finest tannic acid is dissolved in 40 cubic ...
... dissolved in a little water , and left to re - crystallize . The mother liquor still contains a little theine ... dissolved in warm water and made up to 1 litre ; then I grain of the finest tannic acid is dissolved in 40 cubic ...
Page 18
... dissolved in 100 cubic centimetres of water , and introduced into a burette ; 10 cubic centimetres of the lead solution are measured into a beaker , and diluted with 90 cubic centimetres of water . This solution is made hot , and the ...
... dissolved in 100 cubic centimetres of water , and introduced into a burette ; 10 cubic centimetres of the lead solution are measured into a beaker , and diluted with 90 cubic centimetres of water . This solution is made hot , and the ...
Page 19
... dissolving 1.66 grams of the salt in a litre of water . 2. Solution of pure sulphate of indigo : 30 grams dissolved in water and made up to a litre . 3. Solution of pure tannic acid : 2 grams in 1 litre of distilled water . 4. Dilute ...
... dissolving 1.66 grams of the salt in a litre of water . 2. Solution of pure sulphate of indigo : 30 grams dissolved in water and made up to a litre . 3. Solution of pure tannic acid : 2 grams in 1 litre of distilled water . 4. Dilute ...
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Common terms and phrases
250 cubic centimetres Acorns added adulteration albumin alcohol alkaloid analysis appearance bean benzol berries boiling water caffeic acid Caffeine cane caramel cells cellulose cent centimetres of water chemists chicory cloth cocoa cocoa nibs coffee cold water colouring matter Congou consists constituents contains copper crown 8vo crystals cubic centimetres Demy 8vo dextrin dextro-glucose dilute dissolved distilled dried estimation ether evaporated exhausted leaves Fehling's fermentation filtered filtrate glucose grains grams granules green tea husk India infusion insoluble invert-sugar kernel laticiferous laticiferous tissue leaf magnesia mangold wurzel manufacture mineral matter mixture nitrogen obtained Orange Pekoe oxide Parsnips percentage of ash portion potash powder precipitate prepared present proportion Prussian blue pure cane-sugar raw sugar removed roasted sample of coffee seeds Silica skin soluble in water solution Souchong specific gravity starch sulphuretted hydrogen sulphuric acid tannic acid tannin temperature theine theobromine Trinidad vegetable substances weight wurzel
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