IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0936951
(1978-08-25)
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발명자
/ 주소 |
- Strobel Rudolf G. K. (Cincinnati OH)
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출원인 / 주소 |
- The Procter & Gamble Company (Cincinnati OH 02)
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인용정보 |
피인용 횟수 :
12 인용 특허 :
1 |
초록
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A stable water-soluble Desorbate instant tea having a flavor, aroma, appearance and chemical composition approximating that of fresh expertly brewed tea is made by a process comprising passing steam at reduced pressures through a columnar bed of ground tea leaves to pre-wet and pre-swell an upper po
A stable water-soluble Desorbate instant tea having a flavor, aroma, appearance and chemical composition approximating that of fresh expertly brewed tea is made by a process comprising passing steam at reduced pressures through a columnar bed of ground tea leaves to pre-wet and pre-swell an upper portion of said leaves; and then passing water and wet steam at reduced pressures and low temperatures through said bed to desorb and extract from said tea leaves an aqueous tea extract while maintaining a weight ratio of said extract to dry tea leaves of from about 0.5:1 to about 3:1, and collecting said extract in a cold trap. Decreaming of the extract prepared by this process is not necessary to provide a water-soluble dry instant tea which, upon reconstitution in water, provides an iced beverage that tastes like an iced tea made from fresh, expertly brewed tea. The solubility and solution stability of the Desorbate tea of this invention are surprisingly improved by treating the process water with a minor amount of a higher chain polyphosphate glass, a bilsulfite, a sulfite and/or a suitable carrageenan.
대표청구항
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A process for making an improved initial aqueous water soluble tea extract having improved overall fresh brewlike tealike aroma, flavor and flavor strength, said process comprising the steps of: (1) pre-wetting and pre-swelling a finite upper portion of a columnar bed of ground tea leaves by passing
A process for making an improved initial aqueous water soluble tea extract having improved overall fresh brewlike tealike aroma, flavor and flavor strength, said process comprising the steps of: (1) pre-wetting and pre-swelling a finite upper portion of a columnar bed of ground tea leaves by passing substantially dry steam through said bed in such a manner so as to pre-wet and pre-swell only an upper portion of said ground tea leaves in said bed, said bed being held at a temperature of below about 65°F. and an absolute pressure of about 13 mbar to about 400 mbar; (2) slowly passing water and wet steam through said bed at a flow rate that avoids flooding said bed and thereby providing a moving interface between wet swollen ground tea leaves and substantially dry tea leaves until an initial aqueous tea extract breaks through said bed, continuing the application of said water and wet stream in an amount sufficient to provide an initial aqueous tea extract having a draw-off weight ratio of extract to dry tea leaves of from 0.5:1 to 3:1, said bed being held at said temperature and said pressure until about one-half of said water and wet steam have been applied, and then maintaining a temperature in said bed below about 72°C.; (3) collecting said initial aqueous tea extract in a cold trap to provide said improved water soluble tea extract, said cold trap being held at an absolute pressure of about 1 to about 613 mbar and a temperature from about -180°C. to about 20°C.; and wherein said improved water soluble tea extract composition which, upon reconstitution in water, comprises flavanols, theaflavins, thearubigins, caffeine, amino acids, and other tea compounds, in approximately the same relative amounts as a freshly brewed tea prepared from a comparable tea blend, and wherein said tea extract is more soluble at temperatures below about 20°C. than freshly brewed tea, wherein said reconstituted tea remains substantially soluble upon cooling with ice. An improved substantially dry water soluble tea composition made by the process of claim 1 which, upon reconstitution in water, comprises: flavanols, theaflavins, thearubigins, caffeine, amino acids, and other tea compounds, in approximately the same relative amounts as a freshly brewed tea prepared from a comparable tea blend, and wherein said composition has a density of about 0.05 to about 0.15 g/cc, and wherein said tea composition is more soluble at temperatures below about 20°C. than freshly brewed tea, and wherein said reconstituted tea remains substantially soluble upon cooling with ice.
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