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Phenolic content and antioxidant activity of eight representative sweet corn varieties grown in South China

Ruifen ZhangSericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, China;College of Food Science & Technology, Huazhong Agricultural University, Wuhan, ChinaView further author information

Long HuangSericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, ChinaView further author information

Yuanyuan DengSericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, ChinaView further author information

Jianwei ChiSericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, ChinaView further author information

Yan ZhangSericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, ChinaView further author information

Zhencheng WeiSericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, ChinaView further author information

Mingwei ZhangSericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, ChinaCorrespondence[email protected]
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Table 1. Content of phenolics and flavonoids in different sweet corn varieties and percentage contribution of free and bound fractions to the total (means ± SD, n = 3).

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Table 2. The content of ferulic acid and p-coumaric acid in different sweet corn varieties tested (μg/100g FW) (means ± SD, n = 3).

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Table 3. IC₅₀ values of DPPH scavenging activity of different sweet corn varieties determined (mg FW of sample /mL) (means ± SD, n = 3).¹

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Figure 1. Antioxidant activity of the free and bound phenolic fractions of 8 sweet corn varieties determined by the FRAP assay (n=3, means ± SD) FRAP: Ferric reducing antioxidant power. Means without a common letter are significantly different (p < 0.05).

$Figure 1. Antioxidant activity of the free and bound phenolic fractions of 8 sweet corn varieties determined by the FRAP assay (n=3, means ± SD) FRAP: Ferric reducing antioxidant power. Means without a common letter are significantly different (p < 0.05).$

Figure 2. Antioxidant activity of the free and bound phenolic fractions of 8 sweet corn varieties determined by cellular antioxidant assay (CAA) (n=3, means ± SD). Means without a common letter are significantly different (p < 0.05).

$Figure 2. Antioxidant activity of the free and bound phenolic fractions of 8 sweet corn varieties determined by cellular antioxidant assay (CAA) (n=3, means ± SD). Means without a common letter are significantly different (p < 0.05).$

Table 4. Comparison of antioxidant quality of sweet corn extracts with the cellular antioxidant activity (CAA) assay (μmol quercetin equivalent/100 μmol phenolics).¹

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Phenolic content and antioxidant activity of eight representative sweet corn varieties grown in South China

Table 1. Content of phenolics and flavonoids in different sweet corn varieties and percentage contribution of free and bound fractions to the total (means ± SD, n = 3).

Table 2. The content of ferulic acid and p-coumaric acid in different sweet corn varieties tested (μg/100g FW) (means ± SD, n = 3).

Table 3. IC₅₀ values of DPPH scavenging activity of different sweet corn varieties determined (mg FW of sample /mL) (means ± SD, n = 3).¹

Table 4. Comparison of antioxidant quality of sweet corn extracts with the cellular antioxidant activity (CAA) assay (μmol quercetin equivalent/100 μmol phenolics).¹

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Phenolic content and antioxidant activity of eight representative sweet corn varieties grown in South China

Figures & data

Table 1. Content of phenolics and flavonoids in different sweet corn varieties and percentage contribution of free and bound fractions to the total (means ± SD, n = 3).

Table 2. The content of ferulic acid and p-coumaric acid in different sweet corn varieties tested (μg/100g FW) (means ± SD, n = 3).

Table 3. IC50 values of DPPH scavenging activity of different sweet corn varieties determined (mg FW of sample /mL) (means ± SD, n = 3).1

Table 4. Comparison of antioxidant quality of sweet corn extracts with the cellular antioxidant activity (CAA) assay (μmol quercetin equivalent/100 μmol phenolics).1

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Table 3. IC₅₀ values of DPPH scavenging activity of different sweet corn varieties determined (mg FW of sample /mL) (means ± SD, n = 3).¹

Table 4. Comparison of antioxidant quality of sweet corn extracts with the cellular antioxidant activity (CAA) assay (μmol quercetin equivalent/100 μmol phenolics).¹