Tannin Concentration of Gyrinops Tea Taken Form Different Agarwood Plantation and Different Processing Method

Wangiyana, I Gde Adi Suryawan; Supriadi, _; Nikmatullah, Aluh; Sunarpi,; Mulyaningsih, L

doi:10.1088/1755-1315/913/1/012068

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…These leaves particles were extracted using distilled water with a concentration of 0.02 gr/L at 70 o C for 5 minutes. Filtrations using qualitative filter paper were carried to separate the filtrate and residue (Wangiyana et al 2021b). The filtrates produced from this process (Gyrinops tea) were stored at 4 o C for further analysis.…”

Section: Gyrinops Tea Extractionmentioning

confidence: 99%

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Diversity of Gyrinops versteegii from several agarwood plantation on Lombok Island (Indonesia) as raw material of Gyrinops tea

Wangiyana

Supriadi²,

Nikmatullah³

et al. 2022

Biodiversitas

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Abstract. Wangiyana IGAS, Supriadi, Nikmatullah A, Sunarpi, Triandini IGAAH. 2021. Diversity of Gyrinops versteegii from several agarwood plantation on Lombok Island (Indonesia) as raw material of Gyrinops tea. Biodiversitas 23: 178-186. The purpose of this research is to examine the diversity of Gyrinops versteegii as a raw material of agarwood Gyrinops tea based on morphology, phytochemical, and molecular characters. G. versteegii samples were taken from 5 agarwood plantation on Lombok Island: Lingsar, Rarung, Mataram, Kekait, and Pejaring. Variation of G. versteegii stem, leaves, and fruit was the morphology character observed in this study. Qualitative phytochemical screening, quantitative tannin concentration, and the hedonic score of Gyrinops tea were the essential phytochemical character in this study. DNA fingerprinting and RAPD analysis were the molecular characters of this study. All of those characters were used in numeric-phenetics analysis to construct a dendrogram. MVSP program with UPGMA algorithm as clustering method and Simple Matching Coefficient for similarity analysis was used to construct dendrogram. The result has shown variation topology of dendrogram based on morphology, phytochemical, molecular, and combination character. However, all dendrograms had the same number of clusters and cluster members. G. versteegii kekait and G. versteegii Pejaring were grouped to cluster 1 while G. versteegii Rarung and G. versteegii Mataram were grouped to cluster 2. G. versteegii Lingsar was grouped later on the node after cluster 1 or 2. It could be concluded that G. versteegii from Lombok Island Plantation could be divided into three different cluster groups based on the variation of morphology, chemical, and molecular characters.

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Section: Gyrinops Tea Extractionmentioning

confidence: 99%

“…Titration of indigo carmine solution without Gyrinops tea was carried for the blank test. Tannin concentration (%T) was calculated based on the equation (Wangiyana et al 2021b):…”

Section: Quantitative Tannin Assaymentioning

confidence: 99%

Diversity of Gyrinops versteegii from several agarwood plantation on Lombok Island (Indonesia) as raw material of Gyrinops tea

Wangiyana

Supriadi²,

Nikmatullah³

et al. 2022

Biodiversitas

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Phenolic Compounds, Free Radical Scavenging Activity and α-Glucosidase Inhibition Properties of Green, Oolong and Black Sacha Inchi Tea Extract

Zakaria,

Mat Shah,

Alwi

et al. 2023

Curr Res Nutr Food Sci

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Sacha Inchi leaves may possess antioxidant function which is naturally rich in bioactive ingredients and has been widely processed into herbal teas that has many benefits to human health. According to the global data from the World Health Organization (WHO), there has been a rise in the frequency of diabetes mellitus (DM) among adults. Sacha Inchi tea was prepared using several methods, with green tea not fermented, oolong partially fermented, and black tea completely fermented. The phenolic compounds (total phenolic content (TPC), total flavonoid content (TFC), tannin), free radical scavenging activity (DPPH) and inhibition properties of α-Glucosidase on green, oolong and black Sacha Inchi tea extract were determined. The green Sacha Inchi tea extract displayed the highest TPC and TFC values among the oolong and black Sacha Inchi tea extracts at a concentration of 500µg/mL, with values of 2.10±0.01 µg GAE/mL and 3.23±0.20 µg QE/mL, respectively. Meanwhile, at a concentration of 500µg/mL, Sacha Inchi black tea extract demonstrated strong antioxidant activity by DPPH with radical scavenging activity (%) (89.4±0.45). Furthermore, at a concentration of 15.625 µg/mL, black, oolong, and green tea extracts exhibited stronger inhibitory effects on α-Glucosidase (95%, 95%, 92%, respectively) than acarbose (90%). Therefore, the processing steps involved in tea production impact the phenolic compounds, free radical scavenging activity, and the ability to inhibit α-Glucosidase in green, oolong, and black tea extracts.

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Tannin Concentration of Gyrinops Tea Taken Form Different Agarwood Plantation and Different Processing Method

Cited by 2 publications

References 8 publications

Diversity of Gyrinops versteegii from several agarwood plantation on Lombok Island (Indonesia) as raw material of Gyrinops tea

Diversity of Gyrinops versteegii from several agarwood plantation on Lombok Island (Indonesia) as raw material of Gyrinops tea

Phenolic Compounds, Free Radical Scavenging Activity and α-Glucosidase Inhibition Properties of Green, Oolong and Black Sacha Inchi Tea Extract

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