Comparison of Phenolic Content and Antioxidant Capacity in Fruit Parts of Different Pomegranate Varieties

doi:10.11923/j.issn.2095-4050.cjas20191200293

Abstract

Abstract:

To analyze the phenolic characteristics of different pomegranate varieties and screen the varieties with high phenols and strong antioxidant capacity, 13 pomegranate varieties in Zaozhuang area were used as materials, the contents of total phenols, tannins, total flavonoids, proanthocyanidins, flavanols, etc in pericarp, juice and seeds were determined by colorimetry, and the antioxidant capacity were analyzed by DPPH method. There were significant differences in phenols among different varieties and different parts of the same variety, but the content of phenols in pericarp was the highest. ‘Ruanzi Xiehuatian’ not only had the highest contents of total phenols, tannins and total flavonoids in pericarp but also had the highest contents of total phenols, proanthocyanidins and flavanols in seeds. The contents of total phenol and tannin in juice of ‘Xiaoqingpisuan’ were the highest. There was a significantly positive correlation between antioxidant capacity and the contents of total phenols, tannins and total flavonoids in pericarp and seeds. The variety with high contents also had strong antioxidant capacity. In principal component analysis, the five or six phenolic substances indexes in the peel, seed and fruit juice were simplified to two principal component values to measure the phenolic substances content. The principal component values in different parts of different pomegranate varieties were different. The principal component values of ‘Ruanzi Xiehuatian’ ranked at the top 5, which was an excellent variety worth of promotion and further development and utilization. The content of phenolic substances in pomegranate peel was high, so the residue of pomegranate peel could be comprehensively utilized to develop related products.

Key words: Pomegranate, Fruit, Polyphenols, Antioxidant Capacity, Principal Component Analysis

CLC Number:

S663.1

Zhang Yan, Zou Qinyan, Wu Shuai, Zhao Zunle, Yan Xin, Zhang Lihua, Tan Wei. Comparison of Phenolic Content and Antioxidant Capacity in Fruit Parts of Different Pomegranate Varieties[J]. Journal of Agriculture, 2020, 10(12): 57-67.

Figures/Tables 12

References 31

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部位	指标	DPPH清除率
果皮	总酚	0.912^**
	单宁	0.922^**
	总类黄酮	0.932^**
	黄烷醇	0.004
	原花色素	0.341
果汁	总酚	0.444
	单宁	0.377
	总类黄酮	0.218
	黄烷醇	-0.001
	原花色素	-0.259
	总花色苷	-0.234
种子	总酚	0.927^**
	单宁	0.886^**
	总类黄酮	0.886^**
	黄烷醇	-0.179
	原花色素	0.007

部位	指标	DPPH清除率
果皮	总酚	0.912^**
	单宁	0.922^**
	总类黄酮	0.932^**
	黄烷醇	0.004
	原花色素	0.341
果汁	总酚	0.444
	单宁	0.377
	总类黄酮	0.218
	黄烷醇	-0.001
	原花色素	-0.259
	总花色苷	-0.234
种子	总酚	0.927^**
	单宁	0.886^**
	总类黄酮	0.886^**
	黄烷醇	-0.179
	原花色素	0.007

部位	酚类物质	第1主成分	第2主成分
果皮	总酚	0.5684	0.0963
	单宁	0.5656	0.0980
	总类黄酮	0.5572	0.0924
	总黄烷醇	-0.3489	0.7538
	原花色素	0.2129	-0.6359
	特征根	3.0080	1.2725
	贡献率/%	0.6016	0.2545
	累计贡献率/%	0.6016	0.8561
果汁	总酚	0.3406	0.5934
	单宁	0.3614	0.5342
	总类黄酮	0.473	0.0442
	总黄烷醇	0.4407	-0.2962
	原花色素	0.3728	-0.4494
	总花色苷	0.4432	-0.2663
	特征根	4.3750	1.3289
	贡献率/%	0.7292	0.2215
	累计贡献率/%	0.7292	0.9507
种子	总酚	0.5941	0.0103
	单宁	0.5589	-0.1316
	总类黄酮	0.5578	-0.1384
种子	总黄烷醇	0.0750	0.6994
	原花色素	0.1338	0.6887
	特征根	2.6408	1.3815
	贡献率/%	0.5282	0.2763
	累计贡献率/%	0.5282	0.8045

部位	酚类物质	第1主成分	第2主成分
果皮	总酚	0.5684	0.0963
	单宁	0.5656	0.0980
	总类黄酮	0.5572	0.0924
	总黄烷醇	-0.3489	0.7538
	原花色素	0.2129	-0.6359
	特征根	3.0080	1.2725
	贡献率/%	0.6016	0.2545
	累计贡献率/%	0.6016	0.8561
果汁	总酚	0.3406	0.5934
	单宁	0.3614	0.5342
	总类黄酮	0.473	0.0442
	总黄烷醇	0.4407	-0.2962
	原花色素	0.3728	-0.4494
	总花色苷	0.4432	-0.2663
	特征根	4.3750	1.3289
	贡献率/%	0.7292	0.2215
	累计贡献率/%	0.7292	0.9507
种子	总酚	0.5941	0.0103
	单宁	0.5589	-0.1316
	总类黄酮	0.5578	-0.1384
种子	总黄烷醇	0.0750	0.6994
	原花色素	0.1338	0.6887
	特征根	2.6408	1.3815
	贡献率/%	0.5282	0.2763
	累计贡献率/%	0.5282	0.8045

部位	主成分1		主成分2		总主成分
部位	品种	分值	品种	分值	品种	分值	排序
果皮	软籽谢花甜	1.3487	岗榴	1.6343	岗榴	0.6244	1
	大青皮酸	1.0542	秋艳	1.3255	软籽谢花甜	0.5942	2
	大青皮甜	0.6363	硬籽谢花甜	1.1029	大青皮甜	0.5753	3
	蚂蚁咂	0.6105	大青皮甜	0.7561	小青皮酸	0.5196	4
	小青皮酸	0.5566	小青皮酸	0.7260	大青皮酸	0.4491	5
果汁	实生wonderful	2.5753	小青皮酸	2.1008	实生wonderful	1.6572	1
	小青皮酸	0.7340	大青皮酸	1.7589	小青皮酸	1.0006	2
	突尼斯芽变	0.5126	软籽谢花甜	0.3491	大青皮酸	0.5533	3
	软籽谢花甜	0.3886	岗榴	0.1876	软籽谢花甜	0.3607	4
	大青皮酸	0.2245	小青皮甜	0.0712	突尼斯芽变	0.0229	5
种子	小青皮酸	1.3372	软籽谢花甜	2.1344	软籽谢花甜	1.1675	1
	实生wonderful	1.2542	大红袍	1.1782	实生wonderful	0.8946	2
	软籽谢花甜	1.0938	实生wonderful	0.8403	小青皮酸	0.4170	3
	小青皮甜	0.7749	突尼斯芽变	0.3087	岗榴	0.2866	4
	大青皮酸	0.6240	岗榴	0.2062	大青皮酸	0.0189	5