초록 ▼

An aqueous extract of a vegetable material is treated with a view to reducing its caffeine and/or chlorogenic acid content. The treatment is with a solid ligneous adsorbent of vegetable origin in divided form at a temperature of from 0°to 100°C. so as to absorb the caffeine and the chlorogenic acid.

An aqueous extract of a vegetable material is treated with a view to reducing its caffeine and/or chlorogenic acid content. The treatment is with a solid ligneous adsorbent of vegetable origin in divided form at a temperature of from 0°to 100°C. so as to absorb the caffeine and the chlorogenic acid. The combination of extract and ligneous adsorbent is dried by freeze-drying. The dried combination is thereafter introduced into infusing bags. On infusing the bags in hot water, an extract is obtained in partially decaffeinated and partially deacidified form.

대표청구항 ▼

A process for treating an aqueous extract of a vegetable material to reduce its caffeine and/or chlorogenic acid content, which comprises contacting said aqueous extract containing caffeine and/or chlorogenic acid with a solid ligneous adsorbent of vegetable origin in divided form at a temperature o

A process for treating an aqueous extract of a vegetable material to reduce its caffeine and/or chlorogenic acid content, which comprises contacting said aqueous extract containing caffeine and/or chlorogenic acid with a solid ligneous adsorbent of vegetable origin in divided form at a temperature of from 0°to 100°C. so as to adsorb caffeine and chlorogenic acid by suspending said adsorbent in said extract with stirring, drying the suspension without separation of the adsorbent by freeze-drying, introducing the dry mixture obtained into infusing bags wherein the extract is obtained in partially decaffeinated and partially deacidified form by infusing the bags in hot water.