The Antioxidant Activity Components Change of Pears Subject to Static and Dynamic Loads

Figures & data

Figure 1. Static quasi-load diagram of pear

A: The force-deformation device (Inestrone), B: Jaw’s wide edges and thin edges C: Load Cell D: Computer E: Information Extract.

Figure 2. Schematic of the impact machine

A: Pendulum at a 90 degree angle B: Walking along the path C: Collapse pendulum to pear D: Main device profile E: Place the pear F: Pendulum blow G: the base of the device.

Table 1. Analysis of variance (ANOVA) results for the effect of loading force (Wide and Thin edge) and storage period on Total phenol content, antioxidant activity and vitamin C

			Thin Edge Pressure		Wide Edge Pressure
Total Phenolic Content	Variables	DF	Mean Squares	F value	Mean Squares	F value
	Storage	2	58.0979	40.02**	128.4510	158.54**
	Loading	2	67.3828	46.41**	115.6095	142.69**
	Storage × Loading	4	0.8927	0.61^ns	2.9291	3.62*
	Error	18	1.451		0.810
Antioxidants	Storage	2	164.5165	65.79**	251.7637	73.98**
	Loading	2	94.3304	37.72**	184.1869	54.13**
	Storage × Loading	4	8.4394	3.37*	5.6386	1.66^ns
	Error	18	2.500		3.40
Vitamin-C	Storage	2	2.9081	91.30**	3.1033	118.01**
	Loading	2	1.0159	31.90**	0.8744	33.25**
	Storage × Loading	4	0.0025	0.08^ns	0.0844	3.21*
	Error	18	0.031		0.026

** Significant at level 1%, * Significant at 5% level, ns insignificant.

Figure 3. (a): The effect of loading force and (b: storage period on DPPH radical scavenging activity of pear in the wide edge pressure. In A section same letters indicate the non-significance in loading. In B section same letters indicate the non-significance in storage period

Figure 4. Interaction effect of loading force during storage period on total phenolic content at Wide edge pressure

The same lowercase letters indicate the non-significance in a force and the same capital letters indicate the non-significance of each storage period.

Figure 5. Interaction effect of loading force during storage period on Vitamin-C at Wide edge pressure

The same lowercase letters indicate the non-significance in a force and the same capital letters indicate the non-significance of each storage period.

Figure 6. Interaction effect of loading force during storage period on percentage of antioxidant active at thin edge pressure

The same lowercase letters indicate the non-significance in a force and the same capital letters indicate the non-significance of each storage period.

Figure 7. The effect of loading force and (b): storage period on the Total Phenol Content in the Thin edge pressure

In a section same letters indicate the non-significance in loadingIn b section same letters indicate the non-significance in storage period.

Figure 8. (a): The effect of loading force and (b): storage period on the Vitamin-C in the Thin edge pressure

In a section same letters indicate the non-significance in loadingIn b section same letters indicate the non-significance in storage period.

Table 2. Analysis of variance (ANOVA) results for the effect of dynamic loading and storage period on Total phenol content, antioxidant activity and vitamin C

Total Phenolic Content	Variables	DF	Mean Squares	F value
	Storage	2	172.3893	114.10**
	Impact	2	126.3586	83.64**
	Storage × Impact	4	4.9047	3.25*
	Error	18	1.51
Antioxidants	Storage	2	395.0222	130.22**
	Impact	2	232.5037	76.65**
	Storage × Impact	4	10.3145	3.40*
	Error	18	3.03
Vitamin-C	Storage	2	2.0181	25.58**
	Impact	2	2.2737	28.82**
	Storage × Impact	4	0.0959	1.22^ns
	Error	18	0.07

** Significant at level 1%, * Significant at 5% level, ns insignificant.

Figure 9. Interaction effect of loading force during storage period on DPPH radical scavenging activity Dynamic Loading

The same lowercase letters indicate the non-significance in a force and the same capital letters indicate the non-significance of each storage period.

Figure 10. Interaction effect of loading force during storage period on Total Phenol Content at Dynamic Loading

The same lowercase letters indicate the non-significance in a force and the same capital letters indicate the non-significance of each storage period.

Figure 11. (a):The effect of loading force and (b): storage period on the Vitamin-C in the Dynamic Loading