Rancidity Estimation of Perilla Seed Oil by Using Near-Infrared Spectroscopy and Multivariate Analysis Techniques

Table 1

Statistics of acid values and peroxide values of perilla seed oil according to storage time.

Measurements	Storage conditions	Time (h)
		0	24	48	72	96	120	144
Acid value (mg/g)	60°C, 40% RH	3.32 ± 0.02	3.81 ± 0.05	3.92 ± 0.04	3.9 ± 0.14	4.19 ± 0.23	—	—
	80°C, 10% RH	3.57 ± 0.04	3.63 ± 0.01	3.65 ± 0.01	3.71 ± 0.19	3.78 ± 0.13	3.80 ± 0.06	3.82 ± 0.08
Peroxide value (meq/kg)	60°C, 40% RH	1.48 ± 0.68	2.18 ± 0.50	2.99 ± 0.30	3.65 ± 0.45	4.22 ± 0.45	—	—
	80°C, 10% RH	2.91 ± 0.10	2.98 ± 0.38	5.64 ± 0.54	8.45 ± 0.66	10.33 ± 0.50	12.03 ± 0.29	14.00 ± 0.11