Vacuum Concentration Improves the Quality and Antioxidant Capacity of Pear Paste

Table 2

Response characteristics of electronic nose sensor PEN3.

Number	Model	Sensors	Response characteristics
1	W1C	Aromatic	Sensitive to aromatic compounds
2	W5S	Broad range	Sensitive to nitrogen oxides
3	W3C	Aromatic	Sensitive to ammonia and aromatic compounds
4	W6S	Hydrogen	Sensitive to hydrogen
5	W5C	Aliph-arom	Sensitive to alkane and aromatic compounds
6	W1S	Broad-methane	Sensitive to methane
7	W1W	Sulphur-organic	Sensitive to sulfides and terpenes
8	W2S	Broad-alcohol	Sensitive to alcohols and some aromatic compounds
9	W2W	Sulphachlor	Sensitive to organic sulfides and aromatic compounds
10	W3S	Methane-aliph	Sensitive to alkanes