Abstract
Abstract: Syzygium myrtifolium Walp. (pucuk merah) is a decorative species often found in urban settings, including sidewalks and gardens. The vibrant red foliage of this plant is rich in bioactive compounds, such as phenolics, flavonoids, alkaloids, triterpenoids, and steroids, which serve as natural antioxidants. This research aims to determine the concentration of phenolic compounds in a 70% ethanol extract of red shoot leaves, using gallic acid as a reference standard. The analysis revealed that the optimal wavelength for gallic acid was 770 nm, with a linear regression equation of ŷ = 0.1211 + 0.0087x. A coefficient of determination (R²) of 0.9969 and a correlation coefficient (r) of 0.9984 were achieved. The total phenolic content in the 70% ethanol extract of red shoot leaves was found to be 858.9 ± 0.0076 mg GAE/g of extract.
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Claims 5
Claim · model-written summary
The gallic acid calibration had an optimal wavelength of 770 nm.
- Taxon
- Syzygium myrtifolium Walp.
Syzygium myrtifoliumt0 - Outcome
- optimal wavelength for gallic acide0
- Value
- 770 nme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The analysis revealed that the optimal wavelength for gallic acid was 770 nm, with a linear regression equation of ŷ = 0.1211 + 0.0087x.”
t0“Syzygium myrtifolium Walp.”
Claim · model-written summary
The calibration regression equation was ŷ = 0.1211 + 0.0087x.
- Taxon
- Syzygium myrtifolium Walp.Syzygium myrtifoliumt0
- Outcome
- linear regression equatione0
- Value
- 0.1211 + 0.0087xe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with a linear regression equation of ŷ = 0.1211 + 0.0087x.”
t0“Syzygium myrtifolium Walp.”
Claim · model-written summary
The coefficient of determination was 0.9969.
- Taxon
- Syzygium myrtifolium Walp.Syzygium myrtifoliumt0
- Outcome
- coefficient of determination (R²)e0
- Value
- 0.9969e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A coefficient of determination (R²) of 0.9969 and a correlation coefficient (r) of 0.9984 were achieved.”
t0“Syzygium myrtifolium Walp.”
Claim · model-written summary
The correlation coefficient was 0.9984.
- Taxon
- Syzygium myrtifolium Walp.Syzygium myrtifoliumt0
- Outcome
- correlation coefficient (r)e0
- Value
- 0.9984e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A coefficient of determination (R²) of 0.9969 and a correlation coefficient (r) of 0.9984 were achieved.”
t0“Syzygium myrtifolium Walp.”
Claim · model-written summary
The 70% ethanol leaf extract contained 858.9 ± 0.0076 mg GAE/g of extract total phenolics.
- Taxon
- Syzygium myrtifolium Walp.Syzygium myrtifoliumt0
- Organ / stage
- red shoot leavese0
- Outcome
- total phenolic contente0
- Value
- 858.9 ± 0.0076 mg GAE/g of extracte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total phenolic content in the 70% ethanol extract of red shoot leaves was found to be 858.9 ± 0.0076 mg GAE/g of extract.”
t0“Syzygium myrtifolium Walp.”