Food Adulteration and Its Detection: With photomicrographic plates and a bibliographical appendixBattershall, Jesse P. (Jesse Park)
Science
Food Adulteration and Its Detection: With photomicrographic plates and a bibliographical appendix
Battershall, Jesse P. (Jesse Park)
Food adulteration and inspection; Food adulteration and inspection -- United States
[98] Recent reports of the vintage in France for the year 1886,
indicate that, while a decided improvement has been experienced in the
Champagne, Burgundy, Hérault, and Rousillon districts, this has failed
to be the case in Charentes and Gironde, where the phylloxera has again
seriously injured the crops.
[99] F. Schaffer (Zeits. Anal. Chem., xxiv. p. 559) has made the
following analyses of artificial wine (grammes in 100 c.c.):--
------------------------+--------+--------+-------
Alcohol (by volume) | 8·05 | 9·55 | 7·02
Extract | 2·395 | 1·962 | 1·797
Sugar | 0·330 | 0·409 | 0·321
Ash | 0·209 | 0·135 | 0·160
Acidity (as tartaric) | 0·743 | 0·501 | 0·772
Free tartaric acid | -- | traces | traces
Cream of tartar | 0·264 | 0·227 | 0·471
Sulphuric anhydride | 0·0374 | -- | --
Phosphoric anhydride | 0·0196 | 0·0135 | 0·0172
------------------------+--------+--------+-------
[100] It is asserted by a prominent wine merchant in New York that the
monthly production of two manufacturers of artificial wine in this city
exceeds 30,000 gallons.
[101] Blyth, op. cit., p. 445.
[102] According to J. Carter Bell (‘Analyst,’ vi. pp. 197, 221), the
average composition of the ash of pure grape-juice is as follows:--
K_{2}O Na_{2}O CaO MgO Fe_{2}O_{3} & Al_{2}O_{3}
42·14 3·37 11·48 9·67 0·75
SiO_{2} P_{2}O_{6} SO_{3} Cl
0·29 9·60 9·14 1·09
[103] Curtman (Jour. Pharm., xiv. p. 523) states that salicylic acid
can be detected by adding to 4 c.c. of the wine (or beer) 2 c.c. of
methylic alcohol and 2 c.c. of sulphuric acid. Shake the mixture, heat
gently for two minutes, then allow to cool. Next heat to boiling,
when, in presence of the acid, the odour of oil of wintergreen will be
perceptible.
[104] Zeit. f. Anal. Chem., xxi. p. 3, 1882.
[105] Journ. Chem. Soc., xxxvii. p. 572.
[106] Schweizer Wochenschrift, xxii. p. 143.
[107] ‘Comptes Rendus,’ 101, pp. 823, 1011, 1167.
[108] Répert de Pharm. xii. p. 504.
[109] Reichsanzeiger, 1884, No. 154.
[110] R. Borgman (loc. cit.) gives the follow average relations of
ingredients in pure wine:--
Alcohol : glycerine = 100 : 10·5
Extract : acidity = 1000 : 16·6
Acidity : ash = 10 : 3·4
Ash : extractives = 1 : 11·2
Phosphoric acid : ash = 1 : 6·8
LIQUORS.
The ordinary forms of liquors (namely, whisky, rum, and gin), are
prepared by the distillation of alcoholic infusions. The process of
distillation is preceded either by the conversion of the amylaceous
constituents of grain, first into sugar, then into alcohol, or by the
fermentation of saccharine bodies into alcohol, or, as in the case of
brandy, it may be directly applied to a solution containing alcohol.
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