Antioxidant Activity of &lt;i&gt;Syzygium polyanthum&lt;/i&gt; Extracts

Hidayati, Mutia Devi; Ersam, Taslim; Shimizu, Kuniyoshi; Fatmawati, Sri

doi:10.22146/ijc.23545

Cited by 53 publications

(61 citation statements)

References 10 publications

(10 reference statements)

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“…This result is in line with the results of the study of Badriyah [31] that liquidity does not have a significant effect on tax avoidance. Furthermore, research conducted by Fatmawati [32] also cannot prove that liquidity has a significant effect on ETR.…”

Section: Research Resultsmentioning

confidence: 93%

The Effect of Corporate Governance Mechanism, Liquidity and Company Size on Tax Avoidance

Novita¹,

Herliansyah²

2019

SJEF

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This research is to examine the effect of corporate governance mechanisms, liquidity and firm size on tax avoidance. The population this research are all logistics and transportation service companies on the Indonesia Stock Exchange in the period 2012-2017. The selection samples using purposive sampling method with non-probability sampling techniques so that the number of samples is determined by 18 logistics and transportation service companies listed on the Indonesia Stock Exchange for the period 2012-2017. This research data analysis method used multiple linear regression models with the help of SPSS version 20.00. The results of this research prove that independent commissioners, managerial ownership, size of directors, liquidity, and company size partially have no significant effect on tax avoidance. Whereas institutional ownership and audit committees have a significant effect on tax avoidance. The results of the study simultaneously proved that independent commissioners, managerial ownership, board size, liquidity, institutional ownership, audit committee, and company size had a significant effect on tax avoidance.

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Section: Research Resultsmentioning

confidence: 93%

The Effect of Corporate Governance Mechanism, Liquidity and Company Size on Tax Avoidance

Novita¹,

Herliansyah²

2019

SJEF

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“…Reactive Oxygen Species (ROS) merupakan radikal berbahaya terhadap tubuh manusia (Hidayati et al, 2017). Bahaya radikal bebas dalam jangka panjang dihubungkan dengan penyakit kronis seperti kanker, diabetes, penyakit neurodegenerative dan kardiovaskuler (Putri et al, 2018).…”

Section: Antioksidanunclassified

Metabolit sekunder dari Muntingia calabura dan bioaktivitasnya

Putri

Fatmawati

2019

ALCHEMY J.Pen.Kim

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Muntingia calabura (Muntingiaceae) merupakan Jamaican cherry yang dikenal di Indonesia sebagai Kersen atau Talok. Metabolit sekunder sebagai konstituen kimia telah diisolasi dari daun, batang dan akar M. calabura. Flavonoid merupakan konstituen utama penyusun metabolit sekunder dari tanaman ini. Kelompok flavonoid telah dilaporkan memiliki efek farmakologi yang baik. Beberapa literatur melaporkan bioaktivitas M. calabura sebagai antioksidan, antidiabetes, antimikroba, antikanker, anti-inflamasi dan lain-lain. Review ini bertujuan memberikan fakta ilmiah terkait sinergitas metabolit sekunder dan bioaktivitas M. calabura yang diperlukan untuk penelitian kimia bahan alam lebih lanjut.The secondary metabolites of Muntingia calabura and its bioactivity. Muntingia calabura (Mutingiaceae) was recognized as Jamaican cherry called as Kersen or Talok in Indonesia. The chemical constituents have been isolated from leave, stem and root of M. calabura. The main chemical constituent of the secondary metabolite is flavonoid. The flavonoid group has been reported as a good source in pharmacological aspect. Most of literatures reported that M. calabura has a good bioactivity as an antioxidant, antidiabetic, antimicrobial, anticancer, anti-inflammatory and others. This review aims to provide the scientific evidences related to the synergism of secondary metabolites and the bioactivities of M. calabura for further research on natural products.

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“…Daun salam (Syzygium polyanthum [Wight.] mengandung minyak atsiri (sitral dan eugenol), tanin, flavonoid, dan eugenol dan mempunyai aktivitas antioksidan yang bermanfaat bagi kesehatan serta berperan penting dalam mempertahankan mutu produk pangan dari kerusakan oksidatif (Hidayati et al, 2017;Yulianti dan Cakrawati, 2017). Ekstrak etanol daun salam bersifat antioksidan sangat kuat (Bahriul et al, 2014;Hidayati et al, 2017).…”

Section: Pendahuluanunclassified

“…Nilai ini jauh lebih kecil dibanding penelitian sebelumnya (Bahriul et al, 2014;Hidayati et al, 2017). Nilai uji RSA-DPPH (159,73 μg/mL) dari ekstrak metanol, etil asetat, diklorometan dan heksan daun Salam berturutturut sebesar 84,9%; 79,9%; 52,7% dan 47,5% (Hidayati et al, 2017). Nilai IC50 ekstrak metanol daun Salam (EMDS) sebesar 44,35 µg/mL.…”

Section: Karakteristik Eedsunclassified

Penggunaan Ekstrak Etanol Daun Salam (Syzygium polyanthum Wight) pada Sosis Daging Sapi untuk Penghambatan Kerusakan Oksidatif

Pirimoy

Rohadi

Iswoyo³

2019

J. Tek. Ind. Pert. Ind.

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Oxidation is a major cause of damage to fats and fatty prcts. Beef sausages are susceptible to quality damage due to oxidation. The synthetic antioxidants BHA and BHT are often added to sausages for inhibition of fat oxidation. Consumers have not fully received the use of synthetic antioxidants, because they worry about the negative impact in health. This study aimed to analyze the effect of adding salam leaves (EEDS) ethanolic extract at various concentrations (500, 750, 1000, 1250 and 1500 ppm) on the inhibition of oxidative damage to beef sausage during storage (0-114 hours) at room temperature. This study used randomized complete design (RAL) of one factor (EEDS concentration) with 6 treatments, 3 replications. Variables include peroxide number, acid and thiobarbituric acid reactive substances (TBARS) number. Data analysis used in this study was variance analysis (ANOVA), if there were significant differences between treatments, it was carried out further testing by using Duncan's Multiple Range Test (DMRT) at the 5% level. Data were presented as mean ± standard deviation (SD). The result showed that the values of total phenolic and EEDS flavonoids were 13.36 ± 0.49 g-GAE / 100g and 1.67 ± 0.018 g-QE / 100g, respectively. The antioxidant activity of EEDS in the radical scavenging activity (RSA) -DPPH test was stronger than the BHT, it was respectively 75.68% and 60% (60 μl / ml). There was a significant difference in the value of peroxide number, acid number and TBARS of beef sausage in addition to various EEDS concentrations (500-1500 ppm) during storage (p <0.05). The addition of EEDS 1500 ppm was the most effective against the inhibition of oxidative damage in beef sausage.

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Antioxidant Activity of <i>Syzygium polyanthum</i> Extracts

Cited by 53 publications

References 10 publications

The Effect of Corporate Governance Mechanism, Liquidity and Company Size on Tax Avoidance

The Effect of Corporate Governance Mechanism, Liquidity and Company Size on Tax Avoidance

Metabolit sekunder dari Muntingia calabura dan bioaktivitasnya

Penggunaan Ekstrak Etanol Daun Salam (Syzygium polyanthum Wight) pada Sosis Daging Sapi untuk Penghambatan Kerusakan Oksidatif

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