1. New method for the extraction of licorice
Licorice is extracted from the plant’s root, which contains many active
ingredients, including glycyrrhizic acid (GA). The traditional process is
performed by percolation of water at room temperature. The juice is then
concentrated by adding a strong acid causing precipitation of the GA. The
new process developed by RLD produces a Natural Purified Extract (no
chemical agent is used), i.e. an ‘organic’ product.
The extraction is carried out by percolation of "liquorice" in an alcoholic
solution heated to 50°C. The concentration of licorice is obtained by heating,
with gradual evaporation of all the alcohol and most of the water. Alcohol
vapours are condensed and the alcohol is recycled. The heating of the
percolator and evaporators is provided by steam. Set-point temperatures are
adjustable from + 80°C to +130°C depending on the process stage. The entire
installation is inerted with nitrogen.
7 avenue Marie Curie - 38 500 VOIRON - France - t: +33 4 76 05 03 88 - m: +33 6 73 74 38 79 - contact@thermique-ingenierie.fr
General Engineering
Special exchangers
Expertise
Ingénierie Génerale
Through the diversity of demands and problems already addressed, RLD has built an extensive
network of knowledge and experience in the field of industrial heat and cryogenics. Customer
problems are analyzed and quantified so as to write an optimized tender specifications. The
expertise of RLD in low temperatures brings to the industrial fields innovative thermal solutions
little or not known to the traditional engineering institutes. RLD is able to offer solutions combined
with recommendations of suppliers and with supervision services from the design stage to
completion.
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