Determination of the Content of Phenolic Compounds and the Changes of Polyphenol Oxidase and Each Index during Browning of Phyllanthus emblica at Different Storage Temperatures

Table 2

Recovery of 1-galloyl-glucose, GA, TGG and EA from P. emblica.

Composition	Sampling quantity (g)	Sample content (µg)	Amount of addition (µg)	Measured quantity (µg)	Recovery rate (%)	Average recovery (%)	RSD (%)
1-Galloyl-glucose	5.0003	1.5632	1.5452	3.0106	98.84	100.69	3.11
	4.9978	1.6204	1.6050	3.0702	99.04
	5.1104	1.5811	1.6040	2.9231	101.44
	5.0639	1.6061	1.5689	2.9703	97.67
	4.9987	1.5524	1.5521	3.0228	99.98
	5.0629	1.5229	1.6319	3.0192	107.15
GA	5.0003	0.8952	0.9547	2.2508	106.64	102.51	3.54
	4.9978	0.9124	0.8964	2.1056	98.24
	5.1104	0.9703	1.0246	2.1986	105.58
	5.0639	0.9192	0.9092	2.2570	98.91
	4.9987	0.9593	1.0256	2.3822	105.58
	5.0629	0.9680	0.9666	2.2334	99.85
TGG	5.0003	0.9067	0.9658	2.1184	106.51	101.88	2.52
	4.9978	0.9100	0.9292	2.1058	102.11
	5.1104	0.9206	0.9173	2.4543	99.63
	5.0639	0.9094	0.9103	2.4537	100.10
	4.9987	0.8982	0.9296	2.0560	103.49
	5.0629	0.9284	0.9234	2.0414	99.46
EA	5.0003	1.2229	1.2978	2.9731	106.12	97.48	5.36
	4.9978	1.2975	1.2229	3.3873	94.24
	5.1104	1.2020	1.1287	3.4569	93.89
	5.0639	1.2121	1.0893	3.4486	89.87
	4.9987	1.2782	1.2831	3.2424	100.38
	5.0629	1.2350	1.2396	2.9682	100.37

RSD means relative standard deviation.