Abstract. Sukweenadi J, Yunita O, Setiawan F, Kartini, Siagian MT, Danduru AP, Avanti C. 2020. Antioxidant Activity Screening of Seven Indonesian Herbal Extract. Biodiversitas 21: 2062-2067. Kumis kucing (Orthosiphon stamineus), pegagan (Centella asiatica), seledri (Apium graveolens), kunyit (Curcuma domestica), temulawak (Curcuma xanthorrhiza), tempuyung (Sonchus arvensis) and meniran (Phyllanthus niruri) are herbs that commonly used in the Indonesia folk medicine. The constituents that responsible for several important biological activities are phenolic and flavonoid compounds which also possess antioxidant activity. Antioxidant activity of those seven Indonesian herbal extracts was evaluated using DPPH, ABTS and FRAP methods. The extraction was done with the reflux method by using 80% ethanol as a solvent. The total phenol and total flavonoids from each herbal extract were measured using Folin–Ciocalteu reagent and spectrophotometry. Antioxidant activity results by DPPH method on O. stamineus, C. asiatica, A. graveolens, C. domestica, C. xanthorrhiza, S. arvensis, and P. niruri showed IC50 value at 132; ND; 2221; 361; 538; 1118; and 102 ppm, respectively. Results from ABTS method, showed IC50 value at 22; 1199; 169; 100; 82; 143; and 20 ppm respectively. While results from the FRAP method showed that the ethanolic extract of P. niruri at a concentration of 20 ppm possesses the strongest antioxidant activity (17.41 ppm AEAC/ppm extract). The content of total phenolic compounds are 22.50; 0.67; 2.16; 11.40; 7.80; 7.22; and 2.62% GAE, while the total flavonoid compounds were 19.88; 6.67; 4.06; 71.02; 34.62; 3.78; and 8.34% QE, respectively. It can be concluded that ethanolic extract of P. niruri and O. stamineus obtain the highest antioxidant activity based on DPPH, ABTS and FRAP method.

The leaves of Sauropus androgynus (L.) Merr. have been traditionally used in Malaysia, Thailand and Indonesia as food and herbal product for various medicinal purposes. It is worth noting that different concentrations of metabolites in herbal medicine, cultivated in several different geographic locations, may result in different therapeutic effects. The present study was aimed to identify the metabolic profiles of S. androgynus extracts. This is the first report on metabolomic study of S. androgynus leaf extracts from six different geographic locations. S. androgynus leaf extracts from twelve samples were subjected to study the metabolic fingerprinting using Gas Chromatography -Mass Spectroscopy (GC-MS) method. S. androgynus data from various locations were grouped and classified by Principle Component Analysis (PCA) and Cluster Analysis, respectively. The samples from Purwosari alone was merged into one group or a cluster and the other samples were merged into the other cluster, while samples from East Surabaya and Trenggalek showed the close relationship in score plot of PCA and in the dendrogram. Metabolic fingerprinting of S. androgynus by GC-MS shows clearly that S. androgynus leaf extracts from several various different geographic locations contain many biologically active compounds in various concentrations. Research Article

DNA sequence analysis of the nuclear ribosomal internal transcribed spacer (ITS) region was exploited for its applications in the authentication of Sauropus androgynus (L.) Merr. as raw-material herbal medicine and supplement. Leaf samples from 12 different geographic locations in Indonesia were collected. Twelve DNA sequences from the samples were analysed. The sequences were trimmed before sequence alignment. The sequences ranged from 626 to 664 bp in length after trimming. Based on the multiple sequence alignment, a phylogenetic tree was generated using the MrBayes program. It consisted of two groups: one group comprised sequences from Trawas and the other one comprised sequences from Batu, Trawas and Surabaya. These results strongly suggest that ITS sequence analysis is a valuable tool for distinguishing intraspecific differences among S. androgynus cultivars from Indonesia.

Diabetic foot ulcer (DFU) is commonly complication of diabetes mellitus. Antimicrobial and antioxidant herbs can be used as complementary therapy in DFU and these properties will be strengthened by silver nanoparticles (AgNPs). This study was performed for screening of Indonesian herbs promising as antioxidant which can be subsequently involved in the green synthesis of AgNPs. Antioxidant of eight herbs extracts were evaluated using 1,1-diphenyl-2-picrylhydrazyl method. Their total group of compounds were quantified as well. Phyllanthus niruri and Orthosiphon stamineus exhibited the strongest antioxidant power with IC50 of 102 and 133 μg/ml, followed by Curcuma domestica, Stelechocarpus burahol, and Curcuma xanthorriza with the IC50 of 363, 481, and 540 μg/ml, respectively. Sonchus arvensis, Apium graveolens, Centella asiatica did not have antioxidants activity. Total phenolics from the highest is: O. stamineus > C. domestica > C. xanthorrizha > P. niruri > S. burahol > S. arvensis > A. graveolens > C. asiatica, whereas total flavonoids order is O. stamineus > S. burahol > P. niruri > A. graveolens > C. asiatica > S. arvensis > C. xanthorrizha > C. domestica. We concluded that O. stamineus was the most suitable herb to be used as a bioreductor in the green synthesis of AgNPs.

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Kedelai (Glycine max) mengandung banyak nutrisi dan senyawa aktif berkhasiat obat yang berperan penting dalam mengurangi resiko berbagai jenis kanker, penyakit kardiovaskular, masalah pascamenopause, diabetes, dan beberapa gangguan neurodegeneratif. Beberapa kejadian alergi yang disebabkan oleh protein di dalam kedelai menjadi salah satu pemicu perlunya kontrol kualitas kedelai sebagai bahan baku obat tradisional atau produk herbal. Upaya kontrol kualitas kedelai dilakukan dengan karakterisasi morfologis dan karakterisasi molekuler dengan metode Random Amplified Polymorphic DNA (RAPD). Autentikasi molekuler dengan RAPD lebih dapat membedakan 35 varietas kedelai dibandingkan dengan karakterisasi morfologis.

Authentication of Strychnos ligustrina Bl. had been performed at molecular level (DNA) with Random Amplified Polymorphic DNA (RAPD) method, based on the amplification of random DNA fragments by Polymerase Chain Reaction (PCR) with a single arbitrary primer. The aim of this research was obtaining similar banding patterns between DNA of plant Strychnos ligustrina Bl. and DNA of its lignum on local market. Strychnos ligustrina Bl. was determined by UPT Balai Konservasi Tumbuhan Kebun Raya Purwodadi and plants sold as Strychnos ligustrina Bl. were collected as lignum from traditional market at Wonokromo, Rungkut, Genteng, Benowo dan Pabean. DNA from these plants were extracted by modified Cetyltrimethylammonium bromide (CTAB) method and amplified by RAPD method. Amplification had been performed by primer OPO-4 had shown banding patterns on the gel electrophoresis which banding patterns were shown by Strychnos ligustrina Bl. and plants sold as Strychnos ligustrina Bl. on Benowo. Based on this early result, we assume that plants sold as Strychnos ligustrina Bl. on Benowo has closely genetic relationship with Strychnos ligustrina Bl.

The dark green leaves of Sauropus androgynus (Euphorbiaceae) have various nutritive values and are commonly used for human consumption as food, medicine, and natural dye substance in South-east Asia. Shoot cultures of this plant were established by adding various concentrations of kinetin (Kn) and benzyl adenine (BA) using nodal explants. The best results were recorded when Kn 0.1 mg/L was used with BA 1 mg/L (BA1Kn0.1). Spectrophotometric analysis showed two peaks of green pigment in shoot cultures, A pigment (λmax = 663.6 - 663.8 nm, absorbance 0.1111) and B pigment (λmax= 611.3 - 613.9 nm, absorbance 0.0390). Thin Layer Chromatography (TLC) analysis showed two green spots (Rf Y = 0.31 and Rf Z = 0.25) of shoot cultures on medium supplemented with BA1Kn0.1 for 10 days. Pigment profiles of shoot culltures were similar to their corresponding mother plants. Random Amplified Polymorphic DNA (RAPD) was used as a preliminary technique to evaluate the genetic similarity of the shoot cultures and their corresponding mother plants. It showed four similar DNA banding patterns to their leaves, ranging from 271-765 bp.