Sesame oil press plant :hot press or cold press ?

The complete sesame oil extraction plant includes five parts:
cleaning,hot blast air frying(hot press), pressing, filtration, and precipitation.
For clients' question of sesame oil press of cold press or hot press,this is the brief introduction.

Sesame oil extraction plant

Hot press : fry the sesame before pressing
The advantage of hot press:
1.fragant smell
2.deep color
3.high yield
4.less residue
5.easy storage
6.without solvent residue

The disadvantage of hot press:
1.acid value increase
2.less nutrition than cold press,beacause the bioactive substance such as vitamin lost in pressing process
3.final oil should better be refined

Cold press:without frying
In general,temperature of cold press should be under 60℃ so that nutrition can be save to an extreme.
The advantage of cold press:
1.high nutrition
2.light color
3.frying without bubble in cooking

The disadvantage of cold press:
1.moisture content is not stable
2.storage problem because of uncertain moisture content
3.sometimes need to be second or third press