Abstract
Abstract BACKGROUND In Mediterranean grazed woodlands, microclimate changes induced by trees influence the growth and development of the understory, although very little is known about its polyphenolic composition in relation to light intensity. We investigated the bioactive compounds and antioxidant capacity of different legume‐based swards and variations as a result of full sunlight and partial shade. The research was carried out in a cork oak agrosilvopastoral system in Sardinia. RESULTS The highest values of (1,1‐diphenyl‐2‐picrylhydrazyl) (DPPH) reached 7 mmol Trolox equivalent antioxidant capacity 100 g −1 dry weight (DW), total phenolics 67.1 g gallic acid equivalent kg −1 DW and total flavonoids 7.5 g catechin equivalent kg −1 DW. Compared to full sunlight, partial shade reduced DPPH values by 29% and 42%, and the total phenolic content by 23% and 53% in 100% legume mixture and semi‐natural pasture, respectively. Twelve phenolic compounds were detected: chlorogenic acid in 80% legume mixture (partial shade) and verbascoside in pure sward of bladder clover (full sunlight) were the most abundant. CONCLUSION Light intensity significantly affected antioxidant capacity, composition and levels of phenolic compounds. The results of the present study provide new insights into the effects of light intensity on plant secondary metabolites from legume‐based swards, highlighting the important functions provided by agroforestry systems. © 2018 Society of Chemical Industry
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Claims 10
Claim · model-written summary
The highest DPPH value of the legume-based swards was 7 mmol Trolox equivalent antioxidant capacity per 100 g dry weight.
Verbatim
e0“investigated the bioactive compounds and antioxidant capacity of different legume‐based swards and variations as a result of full sunlight and partial shade”
e1“The highest values of (1,1‐diphenyl‐2‐picrylhydrazyl) (DPPH) reached 7 mmol Trolox equivalent antioxidant capacity 100 g −1 dry weight (DW), total phenolics 67.1 g gallic acid equivalent kg −1 DW and total flavonoids 7.5 g catechin equivalent kg −1 DW”
Claim · model-written summary
The highest total phenolic content of the legume-based swards was 67.1 g gallic acid equivalent per kg dry weight.
Verbatim
e0“investigated the bioactive compounds and antioxidant capacity of different legume‐based swards and variations as a result of full sunlight and partial shade”
e1“The highest values of (1,1‐diphenyl‐2‐picrylhydrazyl) (DPPH) reached 7 mmol Trolox equivalent antioxidant capacity 100 g −1 dry weight (DW), total phenolics 67.1 g gallic acid equivalent kg −1 DW and total flavonoids 7.5 g catechin equivalent kg −1 DW”
Claim · model-written summary
The highest total flavonoid content of the legume-based swards was 7.5 g catechin equivalent per kg dry weight.
Verbatim
e0“investigated the bioactive compounds and antioxidant capacity of different legume‐based swards and variations as a result of full sunlight and partial shade”
e1“The highest values of (1,1‐diphenyl‐2‐picrylhydrazyl) (DPPH) reached 7 mmol Trolox equivalent antioxidant capacity 100 g −1 dry weight (DW), total phenolics 67.1 g gallic acid equivalent kg −1 DW and total flavonoids 7.5 g catechin equivalent kg −1 DW”
Claim · model-written summary
Partial shade reduced DPPH values by 29% in the 100% legume mixture compared with full sunlight.
Verbatim
e0“investigated the bioactive compounds and antioxidant capacity of different legume‐based swards and variations as a result of full sunlight and partial shade”
e1“Compared to full sunlight, partial shade reduced DPPH values by 29% and 42%, and the total phenolic content by 23% and 53% in 100% legume mixture and semi‐natural pasture, respectively”
e2“The research was carried out in a cork oak agrosilvopastoral system in Sardinia”
Claim · model-written summary
Partial shade reduced DPPH values by 42% in the semi-natural pasture compared with full sunlight.
Verbatim
e0“investigated the bioactive compounds and antioxidant capacity of different legume‐based swards and variations as a result of full sunlight and partial shade”
e1“Compared to full sunlight, partial shade reduced DPPH values by 29% and 42%, and the total phenolic content by 23% and 53% in 100% legume mixture and semi‐natural pasture, respectively”
e2“The research was carried out in a cork oak agrosilvopastoral system in Sardinia”
Claim · model-written summary
Partial shade reduced total phenolic content by 23% in the 100% legume mixture compared with full sunlight.
Verbatim
e0“investigated the bioactive compounds and antioxidant capacity of different legume‐based swards and variations as a result of full sunlight and partial shade”
e1“Compared to full sunlight, partial shade reduced DPPH values by 29% and 42%, and the total phenolic content by 23% and 53% in 100% legume mixture and semi‐natural pasture, respectively”
e2“The research was carried out in a cork oak agrosilvopastoral system in Sardinia”
Claim · model-written summary
Partial shade reduced total phenolic content by 53% in the semi-natural pasture compared with full sunlight.
Verbatim
e0“investigated the bioactive compounds and antioxidant capacity of different legume‐based swards and variations as a result of full sunlight and partial shade”
e1“Compared to full sunlight, partial shade reduced DPPH values by 29% and 42%, and the total phenolic content by 23% and 53% in 100% legume mixture and semi‐natural pasture, respectively”
e2“The research was carried out in a cork oak agrosilvopastoral system in Sardinia”
Claim · model-written summary
Chlorogenic acid was among the most abundant phenolic compounds in the 80% legume mixture under partial shade.
Verbatim
e0“chlorogenic acid in 80% legume mixture (partial shade) and verbascoside in pure sward of bladder clover (full sunlight) were the most abundant”
Claim · model-written summary
Verbascoside was among the most abundant phenolic compounds in the pure sward of bladder clover under full sunlight.
Verbatim
e0“chlorogenic acid in 80% legume mixture (partial shade) and verbascoside in pure sward of bladder clover (full sunlight) were the most abundant”
Claim · model-written summary
Light intensity significantly affected antioxidant capacity, composition and levels of phenolic compounds in legume-based swards.
- Taxon
- legume‐based swardse0
- Treatment
- Light intensitye1
- Outcome
- antioxidant capacity, composition and levels of phenolic compoundse1
Not reportedDirection
Verbatim
e0“investigated the bioactive compounds and antioxidant capacity of different legume‐based swards and variations as a result of full sunlight and partial shade”
e1“Light intensity significantly affected antioxidant capacity, composition and levels of phenolic compounds”