Analysis of flavonoids and antioxidants in extracts of ferns from Tianmu Mountain in Zhejiang Province (China)

Published Date
Industrial Crops and Products
March 2017, Vol.97:137–145, doi:10.1016/j.indcrop.2016.12.013

• Author 

• Xin Wang ^a,b,c
• Minglong Wang ^a
• Jianguo Cao ^a
• Yuhuan Wu ^d
• Jianbo Xiao ^e
• Quanxi Wang ^a,f,,

• aCollege of Life and Environmental Sciences, Shanghai Normal University, 100 Guilin Rd., Shanghai 200234, China
• bUniversity of Chinese Academy of Sciences, 19A Yuquan Rd., Beijing 100049, China
• cInsititute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Rd., Shenyang 110016, China
• dCollege of Life and Environmental Sciences, Hangzhou Normal University, 16 Xuelin Rd., Hangzhou 310036, China
• eState Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau
• fShanghai Key Laboratory of Plant Functional Genomics and Resources, Chinese Academy of Sciences, Shanghai Chenshan Botanical Garden, 3888 Chenhua Rd., Shanghai 200234, China

Received 9 September 2016. Revised 28 November 2016. Accepted 8 December 2016. Available online 20 December 2016.

Highlights

• •
  Flavonoids contents and antioxidant activity of extracts from ferns in Tianmu Mountain (China) were investigated in detail.
• •
  44 species of ferns were investigated for the first time.
• •
  DPPH and ABTS free radicals scavenging activities of flavonoid extracts from 44 ferns were investigated for the first time.
• •
  Total flavonoid contents and radical scavenging potentials of fern allies were lower than those of filicinae.
• •
  Effects of ecological factors on total flavonoid concentrations and antioxidant activity were significant.

Abstract
Flavonoid extracts of fern are conductive to phylogeny and genesiology as well as pharmacological activities. Ferns are widely distributed in Tianmu Mountain. Flavonoid concentrations and antioxidant activity in extracts of 49 ferns from Tianmu Mountain were investigated and analyzed. The result showed that the total flavonoid contents of 49 ferns ranged from 3.3 to 191.7 mg/g (w/w). Total flavonoid contents and antioxidant activity of fern allies were lower than those of filicinae. Woodwardia japonica^a contained the highest flavonoid content (191.7 mg/g). The results also showed that most of ferns from Tianmu Mountain had strong antioxidant activity. The extracts from A. rhomboidea showed the highest DPPH scavenging activity, while extracts from W. japonica^a showed the highest ABTS scavenging activity. The flavonoid contents of ferns are affected by ecological factors. In general, ferns living under dimmer sunshine have higher flavonoid contents and stronger ABTSscavenging activity than those living under strong sunshine. The ferns grown in trees, high altitude and high latitude contain higher flavonoid concentrations, whereas the ferns grown in soil, high altitude contain higher antioxidant activity.

Keywords

Flavonoid concentrations

Antioxidant activities

Tianmu mountain

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• ⁎ 
  Corresponding author at: College of Life and Environmental Sciences, Shanghai Normal University, 100 Guilin Rd., Shanghai 200234, China.

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