Lipton, Division of Conopco, Inc.

Unilever Plc

Unilever, N.v.

Timothy Graham Jones

Richard Safford

Andrew David Parry

Christopher William Goodsall

Ambalavanar Thiru

Joseph Kipsiele Mitei

Matthew John Barrett

Mark Richard Birch

Devamanohari Pillai

Matthias Berger

Aboagyewa Asumadu-Mensah

Annabel Louise Wilkinson

Marian Jean Blyth

A method for preparing a cold water infusing leaf tea. Green tea leaves are macerated, treated with tannase, fermented in the presence of hydrogen peroxide in an amount that is sufficient to activate endogenous peroxidases to oxidize gallic acid and other compounds that are liberated by the tannase treatment, and then dried. The final product is a black leaf tea that infuses in hot or cold water to give good flavor and color.

Cold water infusing leaf tea

A method for preparing a cold water infusing leaf tea. Green tea leaves are macerated, treated with tannase, fermented in the presence of hydrogen peroxide in an amount that is sufficient to activate endogenous peroxidases to oxidise gallic acid and other compounds that are liberated by the tannase treatment, and then dried. The final product is a black leaf tea that infuses in hot or cold water to give good flavour and colour.

Tea products, particularly black leaf tea and tea powder, derived from green tea leaf are manufactured by a process involving addition of zeolite, preferably a synthetic sodium or potassium zeolite, for reaction with tea ingredients present or subsequently produced to generate red colour species. The tea products produce beverages having enhanced colour characteristics, in terms of colour properties and speed of colour generation, compared with conventional products.

Tea processing with zeolites

Growing community of inventors

Bedford, United Kingdom

Timothy Graham Jones