摘要:
A process of preparing a sencha green tea, comprising the treatment of fresh tea leaves by steaming, cooling, rolling and drying to give an aracha, followed by roasting to give a sencha, characterised in that (a) prior to roasting, (i) the aracha is finely ground; (ii) water is added to the aracha to the extent of at least 10% by weight; (iii) the aracha is stored for at least 2 days at a maximum temperature of room temperature; and (b) the aracha is then roasted using only microwaves under vacuum conditions, until the beginning of burning of the leaves is observed. The resulting sencha has an especially desirable roasted-green flavour.
摘要:
A bush tea product is provided in which a bush tea prepared in substantially conventional manner by chopping harvested tea; subjecting the tea to wetting, fermenting and drying, optionally removing oversized particles and so-called dust as may be necessary or required and subjecting the tea to sterilisation has included therein at least 10 percent by weight of bush tea in a pulverised form resulting from a mechanical pulverising action performed thereon. Preferably, all of the bush tea present is in a pulverised form although as an alternative, a proportion of normal bush tea product is admixed with the pulverised bush tea. Typically, at least 50 percent by weight of the pulverised tea has a particle size selected to pass a 0.5 millimetre mesh screen and at least 10 percent by weight is in powder form that passes a 0.15 millimetre mesh screen.
摘要:
The present invention relates to hot water soluble instant tea and provides a method for preparing an extract, concentrate or powder, which is capable of being reconstituted as a tea beverage, having excellent organoleptic properties and substantially free of undesirable cloudiness and haze, and resembling conventional tea in taste and character.
摘要:
The present invention relates to the preparation of novel polyphenol fractions of Camellia sinensis (tea), the use thereof and formulations containing them. The invention relates specifically to the preparation of extracts deprived of caffeine but containing the polyphenols deriving from epigallocatechin in a natural ratio. The use of these novel extracts, alone or in combination with other active principles, is of interest to the food, pharmaceutical, and cosmetic industry, especially to treat cytotoxic and oxidative conditions.
摘要:
The present invention relates to a process for the preparation of a concentrated tea extract comprising the steps of:(a) extracting tea-leaves with water having a temperature between 15.degree. and 50.degree. C. and separating the first extract from the tea-leaves;(b) extracting tea-leaves which have previously been extracted with water between 15.degree. and 50.degree. C. for a second time, with water having a temperature of more than 50.degree. C. and separating the second extract from the tea-leaves;(c) concentrating said first extract to obtain a first concentrate;(d) concentrating said second extract to obtain a second concentrate; and(e) combining said first and second concentrate,wherein said first extract is concentrated by subjecting it to reverse osmosis at a temperature between 20.degree. and 50.degree. C. and said second extract is concentrated between 50.degree. and 100.degree. C.
摘要:
Dried tea flakes are prepared by vacuum drum drying a tea extract having a solids content of 40-55% which extract is applied to the drum in a film having a thickness of between 0.065 and 0.005 cm. The drum is maintained at an internal temperature of 95.degree.-125.degree. C. Water is evaporated from the film under vacuum from 3-15 torr over a period of from 10-150 seconds to result in a dried product having an apparent density of less than 12 grams per 100 cc.
摘要:
The preparation comprises the steps of freezing the water of an infusion into ice flakes or crystals, draining the resulting sherbet, injecting it under low pressure into a centrifuge, centrifuge draining it and forcing it out of the 'fuge under increased pressure. During each step, the liquid is collected. Finally, the liquid is thermally concentrated into a powder.
摘要:
Native gluten is subjected to successive extractions with anhydrous isopropanol, aqueous alkali isopropanol, and aqueous acidic isopropanol to remove astringent principles. The gluten is then hydrolyzed with dilute acid to convert amide groups to carboxy groups. The non-astringent deamidized gluten is incorporated in beverages including acidic beverages such as fruit juices.
摘要:
A PROCESS FOR MAKING A SPRAY-DRIED INSTANT TEA POWDER WITHOUT ADDING FOREIGN FILLER MATERIALS TO THE INSTANT TEA IN WHICH TO TEA EXTRACT IS PREPARED FROM TEA LEAVES BY HOT WATER EXTRACTION METHODS, CONTROLLED AMOUNTS OF PECTIC SUBSTANCES DERIVED FROM TEA LEAF ARE ADDED TO THE EXTRACT AND THE MIXTURE IS SPRAY-DRIED TO FORM AN INSTANT TEA POWDER HAVING THE DESIRED BULK DENSITY.