Cohobation system
In the distillation method after the oil has been separated from water,
the condensed water which called hydrosol [113] can be recycled and
reused for another distillation process and never runs out. This process
is called ”Cohobation” (figure 17 [114]). It is believed that this
will controls the loss of water-soluble oxygen compounds in hydrosol. It
is due to the reused water is saturated with dissolved constituents and
further dissolution constituents are prevented. It is worth noting that
the cohobation method is not recommended for high temperatures (above
100 °C), because in the case of continuous and direct contact of an
oxygenated element with heat, the possibility of degradation and
hydrolysis will have promoted [54, 55, 115]. This type of system is
a kind of continuous system and reduces extraction time and costs.