The Use of Salvia macrosiphon and Lepidium sativum Linn. Seed Gums in Nanoencapsulation Processes: Improving Antioxidant Activity of Potato Skin Extract

Table 3

Effect of adding free extract 2 and nanoencapsulated extract produced by SMSG, LSSG, and CSL at 1000 ppm and TBHQ (100 ppm) on peroxide value, thiobarbituric acid value, and oil/oxidative stability index of soybean oil under accelerated storage at 50°C for 40 days.

Time (days)	Peroxide value
	Control	PSE	Nanoencapsulated PSE produced by			TBHQ
			SMSG	LSSG	CSL
0	0.5 ± 0.05^a	0.4 ± 0.03^a	0.4 ± 0.03^a	0.4 ± 0.05^a	0.4 ± 0.06^a	0.5 ± 0.03^a
8	8 ± 0.5^a	4 ± 0.4^c	4 ± 0.5^c	4 ± 0.4^c	5 ± 0.6^c	6 ± 0.3^b
16	16 ± 1^a	10 ± 0.9^c	9 ± 0.7^c	9.6 ± 0.4^c	9.1 ± 0.5^c	11.7 ± 0.7^b
24	40 ± 2.2^a	27 ± 0.8^c	26 ± 0.8^c	27 ± 0.5^c	26.3 ± 0.7^c	32 ± 0.9^b
32	72.5 ± 1.2^a	45 ± 1.5^c	42 ± 1.2^d	41.5 ± 1^d	40.7 ± 1.3^d	48.9 ± 1.5^b
40	85 ± 2.3^a	55 ± 0.4^c	52 ± 0.4^d	49.8 ± 0.6^e	48.5 ± 0.4^f	60.2 ± 1.7^b
Time (days)	Thiobarbituric acid value
	Control	PSE	Nanoencapsulated PSE produced by			TBHQ
			SMSG	LSSG	CSL
0	0.085 ± 0.004^a	0.085 ± 0.004^a	0.085 ± 0.003^a	0.085 ± 0.004^a	0.085 ± 0.004^a	0.085 ± 0.004^a
8	0.095 ± 0.005^a	0.092 ± 0.004^a	0.091 ± 0.003^a	0.098 ± 0.004^a	0.099 ± 0.006^a	0.094 ± 0.003^a
16	0.201 ± 0.006^b	0.175 ± 0.005^d	0.194 ± 0.004^c	0.206 ± 0.006^b	0.216 ± 0.007^a	0.194 ± 0.005^c
24	0.865 ± 0.004^a	0.458 ± 0.005^cd	0.464 ± 0.007^c	0.448 ± 0.007^e	0.451 ± 0.005^d	0.511 ± 0.008^b
32	1.347 ± 0.007^a	0.752 ± 0.005^c	0.702 ± 0.008^d	0.667 ± 0.005^e	0.630 ± 0.007^f	0.790 ± 0.007^b
40	1.614 ± 0.005^a	0.962 ± 0.007^b	0.830 ± 0.008^d	0.802 ± 0.007^e	0.768 ± 0.007^f	0.808 ± 0.006^c
Time (days)	Oil/oxidative stability index					TBHQ
	Control	PSE	Nanoencapsulated PSE produced by
			SMSG	LSSG	CSL
0	3.23 ± 0.04^d	3.47 ± 0.04^b	3.19 ± 0.05^d	3.36 ± 0.07^c	3.43 ± 0.05^bc	3.97 ± 0.04^a
8	2.95 ± 0.04^d	3.13 ± 0.05^c	2.97 ± 0.03^d	3.23 ± 0.04^b	3.29 ± 0.04^b	3.74 ± 0.05^a
16	2.6 ± 0.04^d	3.09 ± 0.05^b	2.79 ± 0.04^c	3.03 ± 0.03^b	3.1 ± 0.04^b	3.32 ± 0.04^a
24	1.92 ± 0.04^e	2.48 ± 0.05^d	2.6 ± 0.03^c	2.69 ± 0.04^b	2.77 ± 0.05^b	2.95 ± 0.05^a
32	2.09 ± 0.02^e	2.16 ± 0.03^d	2.22 ± 0.04^c	2.23 ± 0.04^c	2.33 ± 0.03^b	2.48 ± 0.05^a
40	1.15 ± 0.02^d	1.07 ± 0.03^e	1.18 ± 0.02^c	1.23 ± 0.04^c	1.33 ± 0.03^b	1.42 ± 0.02^a

Extract 2, water-ethanol extract of potato skin treated with ultrasonic waves; SMSG, Salvia macrosiphon Seed Gum; LSSG, Lepidium sativum Linn. Seed Gum; CSL, complex of SMSG and LSSG (1 : 1).