Process / Technology
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The raw material for the production of cachaça
is sugar cane, that must have good quality, must
have been harvested raw and at least less 48 hours
after cut. The main sugar cane quality factors are:
variety, environment, plagues and illnesses, agricultural
planning, involving maturation operations, burning,
harvest, shipment and transport. |
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| Sugar plants and
independent alcohol distilleries use modern agricultural
techniques with selected varieties of sugar cane for
sugar production, but there are not selected varieties
for alcohol and cachaça production in Brazil
yet. Small and medium sugar cane planters in the state
still use traditional cultivation methods and inadvisable
varieties of sugar cane. That can decrease agricultural
productivity and industrial efficiency, as well as the
cachaça quality.
Raw sugar cane arrived at distillery must be weighed
and, if it's possible, analyzed to determine its sugar
and fiber amount. Then, sugar cane is unloaded in the
Sugar Cane House or directly to the feeder table, where
it must be washed to separate sand and strange substances.
After that, sugar cane is unloaded in a transporting
mat, passes through a kind of forage machine, in the
small units, or through one or two of the rotatives
knife sets, where it is pricked or shredded, to be prepared
for milling. The cut or shredded sugar cane feeds the
millings that are from two to four ternos triplet responsible
for the extraction operation of the broth, which is
called grinding.
Sugar cane broth is extracted by millings, passes through
a metallic screen or sieve, to separate bagacilho, which
returns to millings, while pulp is sent to be burned
in boilers.
The bolted broth, passes through a (chicanas) chicane
decanter, where it is diluted to the convenient Brix
and from that step it's sent directly to fermentation
dornas, where must pH is corrected with sulfuric or
phosphoric acid and receives necessary nutrients to
nutrition of leavening or ferment, prepared in cubes
or pre-fermentators .
The fermentation process can be by batelada without
centrifugalization, with cuttings or decantation of
the must, adopted in small and medium cachaça
distilleries; or with centrifugalization to recover
the leaven, in the medium distilleries. The semi-continuous
and continuous processes of fermentation are used only
in the great alcohol distilleries. Leavened must or
wine, collected in a mobile dorna, is concentrated directly
to the distillation column or to the wine tank that
feeds it.
Wine distillation operation to obtain cachaça
is processed through copper stills, by discontinuous
operation or through "boatload"(with the meaning
of "too much"), used in small and medium aguardente
distilleries; or through continuous distillation columns
in medium and great distilleries to produce aguardente
or alcohol.
The newly distillated or raw Cachaça can be commercialized
as such or be aged in wood barrels to improve its quality,
as other distilled drinks. The Flowchart of cachaça
production and aging process comes as follows:
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