Studi Kandungan Kimia Ekstrak Buah Pakoba Merah (Syzygium sp)

Kumajas, Jenny; Howan, Dian Herlinda Octorina

doi:10.37033/fjc.v3i2.39

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…One of them is because tannins are polyphenolic compounds, which means they have a place with a group of phenolic compounds. Both examples show positive tannins by showing a blackish green stain 24 .…”

Section: Phytochemical Screeningmentioning

confidence: 96%

Identification of Secondary Metabolites and Antibacterial Activity of Non Polar Fraction from Heterotrigona itama Propolis

Aziz¹,

Yuliawan²,

Kustiawan³

2021

JFAPS

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Propolis is one of the natural products produced by kelulut bees and is still not widely used. The type of stingless bee that is the prima donna in the community is Heterotrigona itama. This study aims to determine the phytochemical content of the n-hexane fraction of Heterotrigona itama bee propolis collected from Kutai Kartanegara, East Kalimantan. The n-hexane fraction was obtained from the methanol extract of H. itama propolis by the liquid-liquid partition method. After obtaining the n-hexane fraction, the research continued with a qualitative phytochemical test to identify the compound and determine total phenolic. Antibacterial activity was determined by the agar well diffusion method with a serial concentration in Escherichia coli bacteria. Qualitative phytochemical analysis in the form of color changes showed that the n-hexane fraction of H. itama propolis contained flavonoids, alkaloids, saponins, and tannins. Based on the results, the total phenolic content of the n-hexane fraction sample was 490 mgGAE/100 g. It caused the n-hexane fraction to have lower phenolic content than the methanol extract (792 mg GAE100 g). Furthermore, this result indicated that the non-polar fraction was not substantial enough to extracted phenolic compounds. It correlated to the antibacterial activity of the n-hexane fraction, which was very weak (2 mm ± 1.5) at 200µg/mL concentration.

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Section: Phytochemical Screeningmentioning

confidence: 96%

Identification of Secondary Metabolites and Antibacterial Activity of Non Polar Fraction from Heterotrigona itama Propolis

Aziz¹,

Yuliawan²,

Kustiawan³

2021

JFAPS

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Isolation and Identification Of Glycoside Compounds from n-Butanol Fraction of Red Pakoba (Syzygium sp.)

Kahiking

Rumampuk

Pongoh

2020

fuller. j. of chem.

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The red pakoba (Syzygium sp.) is a plant originating from north sulawesi that is often used by local people as a basic ingridient of medicine. This research was conducted to isolate and identify glycoside compounds contained in the n-butanol fraction of red pakoba fruits (Syzygium sp.). The isolation process was carried out using the maceration method, for the separation and purification of compounds using Thin Layer Chromatography (TLC) and Gravity Column Chromatography and obtained F2.4 sub-fraction isolates with a sample weight of 4.5 mg. Identification of compound using Proton Nuclear Magnetic Resonance (NMR-1H) and Carbon Nuclear Magnetic Resonance (NMR-13C) tecniques. The result of identification of isolate F2.4 sub-fraction as flavonoid glycoside compounds with the proposed name 3-O-methyl-butyrate-6,7,3',4' tetrahydroxy-5-methoxy-8-methyl flavan with molecular formula (C22H25O8)

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Studi Kandungan Kimia Ekstrak Buah Pakoba Merah (Syzygium sp)

Cited by 2 publications

References 3 publications

Identification of Secondary Metabolites and Antibacterial Activity of Non Polar Fraction from Heterotrigona itama Propolis

Identification of Secondary Metabolites and Antibacterial Activity of Non Polar Fraction from Heterotrigona itama Propolis

Isolation and Identification Of Glycoside Compounds from n-Butanol Fraction of Red Pakoba (Syzygium sp.)

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