Influence of light intensity and temperature on antioxidant activity in Premna serratifolia L.

Abstract

Premna serratifolia has been used to treat inflammatory disorders because it was believed to have antioxidant properties. However, scientific research on this species is currently lacking. This work assesses the antioxidant activity of P. serratifolia in relation to light intensity and temperature. Harvesting time significantly influenced the antioxidant activities in P. serratifolia leaves; the highest 1,1-diphenyl-2-picryl-hydrazil (DPPH) free radical scavenging activity and lowest flavonoid and phenolic contents were observed at 9 am. The opposite trend was observed at 12 noon. Temperature had a significant influence on the DPPH free radical scavenging activity and phenolic content. The DPPH antioxidant activity was negatively correlated with light intensity. The results of this study indicated that harvesting time of P. serratifolia leaves should be tailored according to the preferred antioxidant activity.

The Morphological Dimension and Antioxidant Composition of Selected Indigenous Flavouring Plants in Bintulu, Sarawak

“…Our study revealed that the concentration of phenolic varied widely from 343.27 to 3245.67 mg GAE/ 100 g where P. serratifolia showed the highest concentrations whereas the lowest value was recorded in S. borneensis. The total phenolic compounds in P. serratifolia were found to be significantly high in comparison to a previous study by Simamora et al (2020) (212 mg GAE/ 100 g) but lower than the findings of Chua et al (2015) (5900 mg GAE/ 100 g). Phenolic compounds can be found abundantly in plant food and beverages which play vital parts in pabulum and healthcare (Lin et al, 2016).…”

Phytochemical compositions and antioxidant activity of green and purple basils altered by light intensity and harvesting time

“…In the green basil cultivar, the plants harvested in the early morning had more antioxidants than at the noon. In a study on Premna serratifolia , similar results were obtained that correlated with temperature changes, so it was stated that there is an inverse relationship between the antioxidant levels and the temperature; if the temperature elevates (at noon), the antioxidant levels decrease [ 41 ]. In another study conducted on basil (cv.…”

“…Still, it was the opposite in the plants exposed to 30 % sunlight, and the highest total phenolic content was detected in samples collected in the early morning. The previous study reported an increase in the phenolic content of Premna serratifolia L. followed by an increase in the temperature at noon [ 41 ]. Furthermore, an increase in total flavonoid contents has been demonstrated in various medicinal and aromatic plants by exposure to high light intensity [ 42 ].…”

Hyposalinity affects diurnal photoacclimation patterns in the rhodophyte Palmaria palmata under mimicked Arctic summer conditions

“…The antioxidant activity was determined using the DPPH assay (2.2diphenyl-1-picrylhydrazyl). -DPPH is a free radical used in plant extracts to determine radical scavenging activity by hydrogen donation [35,36]. For this study, the antioxidative potential was determined following the methodology by Springer et al [37].…”