The Chemistry of Foods: Tea, coffee, cocoa, sugar, etcCommittee of Council on Education, 1881 - Food |
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Page 16
... distilling about 100 grains of the tea in presence of water . The distillate possesses a strong odour of tea , and contains a ... distilled water , filtering after each operation . The alcohol is recovered by distillation from 16 TEA .
... distilling about 100 grains of the tea in presence of water . The distillate possesses a strong odour of tea , and contains a ... distilled water , filtering after each operation . The alcohol is recovered by distillation from 16 TEA .
Page 17
... distillation , or evaporation of the benzol , the theine is left in a crystalline and almost colourless state . Second Method . - One hundred grains of dried tea are reduced to a powder , and thoroughly exhausted with boiling water . To ...
... distillation , or evaporation of the benzol , the theine is left in a crystalline and almost colourless state . Second Method . - One hundred grains of dried tea are reduced to a powder , and thoroughly exhausted with boiling water . To ...
Page 18
... distilled water is prepared of a strength equal to 5 grams in the litre . 1-10th gram of pure tannic acid is dissolved in 100 cubic centimetres of water , and introduced into a burette ; 10 cubic centimetres of the lead solution are ...
... distilled water is prepared of a strength equal to 5 grams in the litre . 1-10th gram of pure tannic acid is dissolved in 100 cubic centimetres of water , and introduced into a burette ; 10 cubic centimetres of the lead solution are ...
Page 19
... distilled water . 4. Dilute sulphuric acid : 200 cubic centimetres of concen- trated sulphuric acid diluted to 1 litre , or 1 in 5 . 5. Solution of pure gelatine : 25 grams of best glue dissolved in warm water , and made up to 1 litre ...
... distilled water . 4. Dilute sulphuric acid : 200 cubic centimetres of concen- trated sulphuric acid diluted to 1 litre , or 1 in 5 . 5. Solution of pure gelatine : 25 grams of best glue dissolved in warm water , and made up to 1 litre ...
Page 44
... distillation , when it is found as a brown oil heavier than water . Caffeic Acid . This is also known by the ... distilled with peroxide of manganese and sulphuric acid , yields quinone . Sugar . The raw coffee beans contain from ...
... distillation , when it is found as a brown oil heavier than water . Caffeic Acid . This is also known by the ... distilled with peroxide of manganese and sulphuric acid , yields quinone . Sugar . The raw coffee beans contain from ...
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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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