德旺达叶的抗氧化活性研究乙醇提取及总黄酮、酚类含量测定

Khoirul Anwar, Faridha Maera Lokana, A. Budiarti
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The identification results show that the ethanol extract of Dewandaru leaves is a flavonoid compound of the dihydroflavonol type which has a bound OH functional group, aliphatic CH, C = O, C = C aromatic, C - O and aliphatic CH, and there are hydroxy groups on the C-3, C atoms. -5, and C-7. The results of phytochemical screening showed that the ethanol extract of Dewandaru leaves contains saponins, tannins, phenolics, and flavonoids. The ethanol extract of Dewandaru leaves has antioxidant activity with an IC50 value of 33.92 ppm and trolox with an IC50 value of 19.24 ppm. Based on the IC50 value, both are categorized very strong antioxidant activity. 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Selanjutnya ekstrak etanol daun dewandaru ditetapkan kandungan flavonoid dan fenolik totalnya secara spektrofometri UV/Vis hingga diperoleh kadarnya (mg/g sampel). Hasil identifikasi menunjukkan ekstrak etanol daun dewandaru mengandung senyawa golongan flavonoid jenis dihidroflavonol yang mempunyai gugus fungsi OH terikat, CH alifatik, C = O, C = C aromatik, C – O dan CH alifatik, serta terdapat gugus hidroksi pada atom C-3, C-5, dan C-7. Hasil skrining fitokimia  menunjukkan bahwa ekstrak etanol daun dewandaru mengandung senyawa saponin, tanin, fenolik, dan flavonoid. Ekstrak etanol daun dewandaru memiliki aktivitas antioksidan dengan nilai IC50 sebesar 33,92 ppm dan trolox dengan nilai IC50 sebesar 19,24 ppm. Berdasarkan nilai IC50 keduanya dikategorikan memiliki aktivitas antioksidan yang sangat kuat. Sedangkan kadar fenolik total serta flavonoid total sebesar 327,52 mgGAE/g dan 35,65 mgQE/g.\nKata kunci: antioksidan; Eugenia uniflora L.; fenolik; flavonoid","PeriodicalId":17715,"journal":{"name":"JURNAL ILMIAH SAINS","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Antioxidant Activity of Dewandaru Leaf (Eugenia Uniflora L.) Ethanol Extract and Determination of Total Flavonoid and Phenolic Content\",\"authors\":\"Khoirul Anwar, Faridha Maera Lokana, A. Budiarti\",\"doi\":\"10.35799/jis.v22i2.43913\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Dewandaru (Eugenia uniflora L.) is a plant that has antioxidant activities. 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引用次数: 1

摘要

德万达鲁(Eugenia uniflora L.)是一种具有抗氧化活性的植物。这些化合物含有酚类化合物和类黄酮。本研究旨在用ABTS法测定德万达叶乙醇提取物的抗氧化活性,并测定其总黄酮和总酚类化合物的含量。用96%的乙醇浸渍法获得了德旺达鲁叶的乙醇提取物。用傅里叶变换红外光谱(FTIR)和植物化学筛选等方法对芦笋叶乙醇提取物的活性成分进行了鉴定。采用ABTS法测定德万大叶乙醇提取物的抗氧化活性,得到IC50值;采用紫外/可见分光光度法测定总黄酮和酚类含量,得到其含量(mg/g样品)。鉴定结果表明,德万达叶乙醇提取物为二氢黄酮醇型类黄酮化合物,具有结合OH官能团、脂肪族CH、C = O、C = C芳香、C- O和脂肪族CH,且C-3、C原子上有羟基。-5和-7。植物化学筛选结果表明,德万大叶乙醇提取物中含有皂苷、单宁、酚类物质和黄酮类物质。德旺达鲁叶乙醇提取物的抗氧化活性IC50值为33.92 ppm,三洛克斯的IC50值为19.24 ppm。根据IC50值,两者都具有很强的抗氧化活性。总酚和总黄酮水平分别为327.52 mgGAE/g和35.65 mgQE/g。关键词:抗氧化剂;uniflora .;类黄酮;【摘要】独角龙珠(Eugenia Uniflora L.)总黄酮(Flavonoid dan Fenolik)。仙牙牙阳terkandung didalamnya antara躺仙牙牙牙丹黄酮。黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物。Ekstrak乙醇,dewandaru, diperoleh, dengan, maserasi, menggunakan乙醇,96%。用傅里叶变换红外光谱(FTIR)和皮膜氧化法鉴别了一种新型的膜氧化法。estrak乙醇,dewandaru diuji活性抗氧化和孟古那坎方法ABTS - 2 - 2 - 1 - 2 - 1 - 2 - 1。黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物、黄酮类化合物(mg/g样品)。研究鉴定了龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮、龙舌兰类黄酮。哈西尔skrning fitokia menunjukkan bahwa ekstrak乙醇,dewanaru mengandung senyawa皂苷,单宁,黄酮,丹黄酮。estrak乙醇,dewandaru, meiliki活性,抗氧化,dengan nilai IC50 sebesar 33,92 ppm和trolox dengan nilai IC50 sebesar 19,24 ppm。Berdasarkan nilai IC50 keduanya didiategorikan memoriliki aktivitas antioksidan yang sangat kuat。Sedangkan kadar fenolik总seta类黄酮总sebesar 327,52 mgGAE/g dan 35,65 mgQE/g。Kata kunci: antioksidan;uniflora .;fenolik;类黄酮
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Antioxidant Activity of Dewandaru Leaf (Eugenia Uniflora L.) Ethanol Extract and Determination of Total Flavonoid and Phenolic Content
Dewandaru (Eugenia uniflora L.) is a plant that has antioxidant activities. The compounds contained phenolic compounds and flavonoids.  This study aimed to test the antioxidant activity of the ethanol extract of Dewandaru leaves (Eugenia uniflora L.) with ABTS method and determine the content of flavonoid and total phenolic compounds. Ethanol extract of Dewandaru leaves was obtained by maceration using 96% ethanol. The ethanol extract of Dewandaru leaves identified the active compounds by FTIR (Fourier Transform Infra Red) and phytochemical screening. Ethanol extract of Dewandaru leaves was tested for its antioxidant activity using the ABTS method to obtaine the IC50 value and determined total flavonoid and phenolic content using UV/Vis spectrophotometry to obtain the levels (mg/g sample). The identification results show that the ethanol extract of Dewandaru leaves is a flavonoid compound of the dihydroflavonol type which has a bound OH functional group, aliphatic CH, C = O, C = C aromatic, C - O and aliphatic CH, and there are hydroxy groups on the C-3, C atoms. -5, and C-7. The results of phytochemical screening showed that the ethanol extract of Dewandaru leaves contains saponins, tannins, phenolics, and flavonoids. The ethanol extract of Dewandaru leaves has antioxidant activity with an IC50 value of 33.92 ppm and trolox with an IC50 value of 19.24 ppm. Based on the IC50 value, both are categorized very strong antioxidant activity. The total phenolic and total flavonoid levels were 327.52 mgGAE/g and 35.65 mgQE/g. Keywords: Antioxidant; Eugenia uniflora L.; flavonoid; phenolic Aktivitas Antioksidan Ekstrak Etanol Daun Dewandaru (Eugenia Uniflora L.) serta Penetapan Flavonoid dan Fenolik Total ABSTRAK Dewandaru (Eugenia uniflora L.) termasuk salah satu tanaman yang mempunyai khasiat antioksidan. Senyawa yang terkandung didalamnya antara lain senyawa fenolik dan flavonoid. Penelitian ini bertujuan untuk melakukan uji aktivitas antioksidan ekstrak etanol daun dewandaru (Eugenia uniflora L.) menggunakan metode ABTS dan menetapkan kandungan senyawa flavonoid dan fenolik total. Ekstrak etanol daun dewandaru diperoleh dengan cara maserasi menggunakan etanol 96 %. Ekstrak etanol daun dewandaru diidentifikasi senyawa aktif dengan FTIR (Fourier Transform Infra Red) dan skrinning fitokimia. Ekstrak etanol daun dewandaru diuji aktivitas antioksidan menggunakan metode ABTS sehingga diperoleh nilai IC50. Selanjutnya ekstrak etanol daun dewandaru ditetapkan kandungan flavonoid dan fenolik totalnya secara spektrofometri UV/Vis hingga diperoleh kadarnya (mg/g sampel). Hasil identifikasi menunjukkan ekstrak etanol daun dewandaru mengandung senyawa golongan flavonoid jenis dihidroflavonol yang mempunyai gugus fungsi OH terikat, CH alifatik, C = O, C = C aromatik, C – O dan CH alifatik, serta terdapat gugus hidroksi pada atom C-3, C-5, dan C-7. Hasil skrining fitokimia  menunjukkan bahwa ekstrak etanol daun dewandaru mengandung senyawa saponin, tanin, fenolik, dan flavonoid. Ekstrak etanol daun dewandaru memiliki aktivitas antioksidan dengan nilai IC50 sebesar 33,92 ppm dan trolox dengan nilai IC50 sebesar 19,24 ppm. Berdasarkan nilai IC50 keduanya dikategorikan memiliki aktivitas antioksidan yang sangat kuat. Sedangkan kadar fenolik total serta flavonoid total sebesar 327,52 mgGAE/g dan 35,65 mgQE/g. Kata kunci: antioksidan; Eugenia uniflora L.; fenolik; flavonoid
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