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Effects of Variety and Harvesting Period on Total Flavonoids, Total Polyphenols and Antioxidant Activity of Quinoa Sprouts
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Wenqi Li1, Xueyan Duan2, Yichen Hu1, Zhaohui Huang3, 4, Peiyou Qin2
Crops | 2026, 42(2) : 134 - 142
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Crops | 2026, 42(2): 134-142
Effects of Variety and Harvesting Period on Total Flavonoids, Total Polyphenols and Antioxidant Activity of Quinoa Sprouts
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Wenqi Li1, Xueyan Duan2, Yichen Hu1, Zhaohui Huang3, 4, Peiyou Qin2
Affiliations
  • 1College of Food and Bioengineering, Chengdu University, Chengdu 610106, Sichuan, China
  • 2Institute of Agri-Food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
  • 3Hainan Tropical Ocean University, Sanya 572000, Hainan, China
  • 4Yazhou Bay Innovation Institute of Hainan Tropical Ocean University, Sanya 572000, Hainan, China
Published: 2026-04-15 doi: 10.16035/j.issn.1001-7283.2026.02.016
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Using 19 quinoa varieties from Hebei and Xinjiang as experimental materials, the total polyphenol and total flavonoid contents of quinoa sprouts during 21-49 d were analyzed, and their antioxidant activities were evaluated by DPPH (1,1-diphenyl-2-picrylhydrazyl) and ABTS [2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid)] methods. The results showed that with the change of growth period, plant height and fresh weight of quinoa sprouts increased significantly; the total polyphenol and total flavonoid contents showed an overall downward trend; and the antioxidant activity also changed accordingly and was significantly positively correlated with the total polyphenol and total flavonoid contents. Combined with the results of cluster analysis, it was found that when the quinoa varieties Y1-Y10 from Hebei Province grew to 35 d, the total polyphenol (10.38-12.71 mg GAE/g DW) and total flavonoid (21.92-26.28 mg RE/g DW) contents were relatively high, and they exhibited certain antioxidant activities (DPPH scavenging activity: 11.65-15.64 mg TE/g DW; ABTS scavenging activity: 24.56-33.98 mg TE/g DW). Furthermore, these varieties showed high biological yields (plant height: 27.97-33.93 cm; fresh weight: 8.81-29.17 g/plant) and relatively tender quality.

Chenopodium quinoa Willd.  /  Sprouts  /  Total polyphenol  /  Total flavonoid  /  Antioxidant activity
Wenqi Li, Xueyan Duan, Yichen Hu, Zhaohui Huang, Peiyou Qin. Effects of Variety and Harvesting Period on Total Flavonoids, Total Polyphenols and Antioxidant Activity of Quinoa Sprouts[J]. Crops, 2026 , 42 (2) : 134 -142 . DOI: 10.16035/j.issn.1001-7283.2026.02.016
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Year 2026 volume 42 Issue 2
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Article Info
doi: 10.16035/j.issn.1001-7283.2026.02.016
  • Receive Date：2024-12-02
  • Online Date：2026-04-30
  • Published：2026-04-15
Article Data
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History
  • Received：2024-12-02
  • Revised：2025-01-17
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Affiliations
    1College of Food and Bioengineering, Chengdu University, Chengdu 610106, Sichuan, China
    2Institute of Agri-Food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
    3Hainan Tropical Ocean University, Sanya 572000, Hainan, China
    4Yazhou Bay Innovation Institute of Hainan Tropical Ocean University, Sanya 572000, Hainan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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