Food or edible material: processes – compositions – and products – Inhibiting chemical or physical change of food by contact... – Treating liquid material
Patent
1995-05-18
1997-04-22
Lovering, Richard D.
Food or edible material: processes, compositions, and products
Inhibiting chemical or physical change of food by contact...
Treating liquid material
4263305, 426423, 2523132, 423338, 502407, C12H 1052
Patent
active
056227434
ABSTRACT:
A stabilizing agent for beer comprising a particular amorphous silica exhibiting a large negative zeta-potential in the pH region of the beer. The amorphous silica is of the xerogel type and has a specific surface area of from 100 to 600 m.sup.2 /g, a porous volume of 1 to 2 cc/g, and OH groups in a number of not larger than 7
m.sup.2 on the silica surface, and an aqueous suspension thereof exhibits a pH of from 4 to 6.2 and a zeta-potential of negative polarity, the absolute value thereof being not smaller than 20 mV. When used as a stabilizing agent for beer, the amorphous particulate silica effectively removes the haze since the aqueous suspension thereof exhibits a weakly acidic pH which is close to that of the beer and a large negative zeta-potential, and helps improve froth-holding property and fragrance-retaining property of the beer.
REFERENCES:
patent: 4515821 (1985-05-01), Armstead et al.
patent: 4636394 (1987-01-01), Hsu
patent: 4975405 (1990-12-01), Okamura et al.
Zhuravlev, L. T., "Concentration of Hydroxyl Groups on the Surface of Amorphous Silica", Langmuir 1987, vol. 3, No. 3, pp. 316-318.
Conley, Robert T., Infrared Spectroscopy Second Edition, Allyn and Bacon, Inc., Boston, Mass. (1972) pp. 188-195.
Kamon Akira
Morimoto Tatsuji
Ono Kinichi
Tanaka Masanori
Lovering Richard D.
Metzmaier Daniel S.
Mizusawa Industrial Chemicals Ltd.
Sapporo Breweries Limited
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