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Acta Prataculturae Sinica ›› 2022, Vol. 31 ›› Issue (3): 207-213.DOI: 10.11686/cyxb2020599

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Effect of catechol on the quality and antioxidant activity of Toona sinensis leaf silage

De-kui CHEN(), Shuo WU, Xuan ZOU, Wei ZHOU, Xiao-yang CHEN(), Qing ZHANG()   

  1. Guangdong Research Center of Woody Forage Engineering Technology Guangzhou,Guangdong Key Laboratory for Innovation Development and Utilization of Forest Plant Germplasm,Guangzhou 510642,China
  • Received:2020-12-30 Revised:2021-03-10 Online:2022-03-20 Published:2022-01-15
  • Contact: Xiao-yang CHEN,Qing ZHANG


This study investigated the effect of catechol on the nutritional quality and antioxidant activity of ensiled Toona sinensis leaves (TSL). The results showed that the protein fraction of TSL silages was preserved well, with the non-protein nitrogen and ammonia concentrations maintained at a low level. Antioxidant activity was decreased slightly by catechol but remained high. Compared with the CK treatment, catechol significantly increased (P<0.05) 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity and ferric-reducing antioxidant potential (FRAP). Pearson correlation analysis showed that the antioxidant activity of TSL silage was positively correlated with the total flavonoid content (P<0.01). The nutritional quality and antioxidant activity of TSL were well preserved by ensiling. With the addition of catechol, the antioxidant activity of TSL silage was significantly improved. TSL silage had high nutritional value and antioxidant activity.

Key words: Toona sinensis leaves, catechol, silage additive