Food Adulteration and Its Detection. Jesse P. Battershall

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First Young Hyson, Regular Moyune. First Young Hyson, Plain Draw. Second Young Hyson, Moyune. Third Young Hyson, Plain Draw. Choice Gunpowder. Third Gunpowder. c. c. c. c. c. Price per lb. (wholesale). 28 to 30 25 17 to 18 14 35 23 p.c. p.c. p.c. p.c. p.c. p.c. Total ash 6·26 5·86 5·84 6·20 5·76 5·50 Ash soluble in water. 3·60 3·28 3·36 3·34 3·26 3·14 Ash insoluble in water. 2·66 2·58 2·48 2·86 2·50 2·36 Ash insoluble in acids. 0·64 0·58 0·50 0·52 0·54 0·52 Extract 40·60 41·00 39·80 30·40 39·60 36·00 Insoluble leaf 55·50 57·70 57·15 61·95 56·70 57·90 Tannin 18·00 19·96 18·53 16·99 20·09 17·87 Theine 2·26 2·30 1·16 1·08 1·78 1·42

Variety.	Uncoloured Japan, Choicest, First Picking.	Coloured Japan, Good Medium First Picking.	Coloured Japan, Good Medium, Third Picking	Japan Dust
				Coloured, Fine.	Uncoloured, Common.
	c.	c.	c.	c.	c.
Price per lb. (wholesale).	30	22	19	9	6
	p.c.	p.c.	p.c.	p.c.	p.c.
Total ash	5·44	6·06	6·50	9·74	6·66
Ash soluble in water.	3·46	2·84	2·90	1·48	2·78
Ash insoluble in water.	1·98	3·22	3·60	8·26	3·88
Ash insoluble in acids.	0·46	0·78	0·96	3·90	1·46
Extract	39·20	36·40	33·40	31·80	32·80
Insoluble leaf	56·85	57·10	59·90	61·45	60·05
Tannin	21·92	18·27	17·35	15·66	17·74
Theine	1·54	1·66	0·74	0·82	2·43

      

      The following analyses of several kinds of spurious tea, received from the U.S. Consuls at Canton and Nagasaki (Japan), have been made by the author:—

	1.	2.	3.	4.
	per cent.	per cent.	per cent.	per cent.
Total ash	8·62	8·90	7·95	12·58
Ash insoluble in water	7·98	6·04	4·95	8·74
Ash soluble in water	0·64	1·86	3·00	3·84
Ash insoluble in acid	3·92	3·18	1·88	6·60
Extract	7·73	14·00	12·76	22·10
Gum	10·67	7·30	Скачать книгу