Abstract
Quantitative evaluation for foliar pigments, nutrients, flavonoids, polyphenol and antioxidant activities of Gynura procumbens (Lour). Merr. was done on three different growing seasons within a year. A pot culture based experiment was conducted during February, 2017 to January, 2018 at the Botanical Garden of Chittagong University. Maximum foliar photosynthetic pigments, nutrients, polyphenol were observed in monsoon (June-August) and minimum in late monsoon (September-November) respectively. Whilst the highest flavonoids content was determined in the leaf extract of early monsoon (March-May) and the lowest in late monsoon (September-November) respectively. Furthermore, the maximum antioxidant activity was estimated in the leaf extract of late monsoon (September-November) and the lowest in early monsoon (March-May) respectively. The present study concludes that monsoon (June-August) is suitable for efficient photosynthesis, nutrient as well as polyphenol accumulation in Gynura and early monsoon (March-May) is favourable for maximum flavonoid synthesis and late monsoon (September-November) is the right time for harvesting the leaves of Gynura to obtain maximum antioxidant activity for medicinal use.
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Claims 7
Claim · model-written summary
foliar photosynthetic pigments, nutrients, polyphenol peaked in monsoon (June-August).
- Taxon
- Gynura procumbens (Lour). Merr.
Gynura procumbenst0 - Outcome
- foliar photosynthetic pigments, nutrients, polyphenole0
- Direction
- Maximume0
- Setting
- monsoon (June-August)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum foliar photosynthetic pigments, nutrients, polyphenol were observed in monsoon (June-August) and minimum in late monsoon (September-November) respectively.”
t0“Gynura procumbens (Lour). Merr.”
Claim · model-written summary
foliar photosynthetic pigments, nutrients, polyphenol was lowest in late monsoon (September-November).
- Taxon
- Gynura procumbens (Lour). Merr.Gynura procumbenst0
- Outcome
- foliar photosynthetic pigments, nutrients, polyphenole0
- Direction
- minimume0
- Setting
- late monsoon (September-November)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum foliar photosynthetic pigments, nutrients, polyphenol were observed in monsoon (June-August) and minimum in late monsoon (September-November) respectively.”
t0“Gynura procumbens (Lour). Merr.”
Claim · model-written summary
flavonoids content peaked in early monsoon (March-May).
- Taxon
- Gynura procumbens (Lour). Merr.Gynura procumbenst0
- Outcome
- flavonoids contente0
- Direction
- higheste0
- Setting
- early monsoon (March-May)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Whilst the highest flavonoids content was determined in the leaf extract of early monsoon (March-May) and the lowest in late monsoon (September-November) respectively.”
t0“Gynura procumbens (Lour). Merr.”
Claim · model-written summary
flavonoids content was lowest in late monsoon (September-November).
- Taxon
- Gynura procumbens (Lour). Merr.Gynura procumbenst0
- Outcome
- flavonoids contente0
- Direction
- loweste0
- Setting
- late monsoon (September-November)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Whilst the highest flavonoids content was determined in the leaf extract of early monsoon (March-May) and the lowest in late monsoon (September-November) respectively.”
t0“Gynura procumbens (Lour). Merr.”
Claim · model-written summary
antioxidant activity peaked in late monsoon (September-November).
- Taxon
- Gynura procumbens (Lour). Merr.Gynura procumbenst0
- Outcome
- antioxidant activitye0
- Direction
- maximume0
- Setting
- late monsoon (September-November)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furthermore, the maximum antioxidant activity was estimated in the leaf extract of late monsoon (September-November) and the lowest in early monsoon (March-May) respectively.”
t0“Gynura procumbens (Lour). Merr.”
Claim · model-written summary
antioxidant activity was lowest in early monsoon (March-May).
- Taxon
- Gynura procumbens (Lour). Merr.Gynura procumbenst0
- Outcome
- antioxidant activitye0
- Direction
- loweste0
- Setting
- early monsoon (March-May)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furthermore, the maximum antioxidant activity was estimated in the leaf extract of late monsoon (September-November) and the lowest in early monsoon (March-May) respectively.”
t0“Gynura procumbens (Lour). Merr.”
Claim · model-written summary
Late monsoon was recommended to harvest Gynura leaves for maximum antioxidant activity.
_Gynura_aurantiaca_-_flower_and_leaf.jpg?width=60){kind=small}
GynuraOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
_Gynura_aurantiaca_-_flower_and_leaf.jpg?width=500)
Verbatim
e0“late monsoon (September-November) is the right time for harvesting the leaves of Gynura to obtain maximum antioxidant activity for medicinal use.”