Table 1.

Additives for 8 treatments. With the exception of sodium chloride (SALT), high-concentration treatment contains 10 times the additive compared to the corresponding low-concentration treatment.

Set	Treatment	Additives
Monosodium glutamate (MSG)	High MSG (H MSG)	0.025% (w/v) MSG
	Low MSG (L MSG)	0.0025% (w/v) MSG
Benzoic acid (BA)	High BA (H BA)	0.025% (w/v) BA
	Low BA (L BA)	0.0025% (w/v) BA
Sodium chloride (SALT)	High SALT (H SALT)	1% (w/v) NaCl
	Low SALT (L SALT)	No additive
Combination (COMB)	High COMB (H COMB)	0.025% (w/v) MSG, 0.025% (w/v) BA, and 1% (w/v) NaCl
	Low COMB (L COMB)	0.0025% (w/v) MSG and 0.0025% (w/v) BA