scholarly journals Pengaruh Salinitas terhadap Pertumbuhan dan Aktivitas Antioksidan Dunaliella salina (Chlorophyceae: Dunaliellaceae)

2020 ◽  
Vol 9 (2) ◽  
pp. 181-185
Author(s):  
Intan Budi Setiasih ◽  
Agus Sabdono ◽  
Rini Pramesti
Keyword(s):  
Antioxidant Activity ◽  
Dunaliella Salina ◽  
Ethanol Extract ◽  
Optimal Growth ◽  
Antioxidant Compounds ◽  
Green Microalgae ◽  
Optimal Salinity ◽  
Dpph Method ◽  
Experimental Laboratory ◽  
Biology Laboratory

ABSTRAK: Dunaliella salina merupakan salah satu jenis mikroalgae hijau yang mengandung berbagai senyawa bioaktif termasuk senyawa antioksidan untuk melawan radikal bebas. Pertumbuhan mikroalgae dipengaruhi oleh lingkungan salah satunya adalah salinitas. Penelitian ini bertujuan mengetahui salinitas optimal untuk pertumbuhan dan aktivitas antioksidan D. salina berdasarkan nilai persen inhibisi. Penelitian ini dilaksanakan di Laboratorium Terpadu dan Laboratorium Biologi Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro, Semarang pada bulan Mei - Juli 2018. Metode penelitian yang digunakan adalah eksperimental laboratoris. D. salina dikultur pada lima salinitas yang berbeda yaitu 20, 25, 30, 35 dan 40 ppt.  Pengamatan dilakukan selama 7x24 jam, dipanen dan diekstrak dengan pelarut etanol yang selanjutnya dianalisis aktivitas antioksidannya dengan metode 1,1-difenil-2-pikrilhidrazil (DPPH). Hasil penelitian menunjukkan pertumbuhan optimal terjadi pada salinitas 30 ppt, dan aktivitas antioksidan tertinggi dicapai pada salinitas 20 ppt (9,88±0,59) yang termasuk dalam kategori lemah.ABSTRACT: D. salina is a type of green microalgae that contains various bioactive compounds including antioxidant compounds to fight free radicals. Microalgal growth is influenced by the environmental conditions such as  salinity. This study aims were to determine the optimal salinity of growth and antioxidant activity in ethanol extract based on percent inhibition values. This research was conducted in the Integrated Laboratory and Biology Laboratory of the Faculty of Fisheries and Marine Sciences, Diponegoro University, Semarang in May - July 2018.The research method used was an experimental laboratory. D. salina was cultivated with five different salinities on 20,  25, 30, 35 and 40 o/oo. Observation was carried out for 7x24 hours, harvested and extracted with ethanol solvent and then analyzed its antioxidant activity by 1,1-diphenyl-2-picrylhydrazyl (DPPH) method. The results showed that optimal growth of D. salina was 30 o/oo  in salinity, and the highest antioxidant activity was 20 o/oo in salinity (9.88 ± 0.59) and included in the weak category.

scholarly journals UJI AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL BULBUS BAWANG DAYAK (Eleutherine americana Merr) DENGAN METODE DPPH (1,1-Diphenyl-2-Picrylhydrazyl)

PHARMACON ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 451
Author(s):  
Rizkah V. Mokoginta ◽  
Herny E. I. Simbala ◽  
Karlah L.R Mansauda
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Ethanol Extract ◽  
Antioxidant Compounds ◽  
Onion Plant ◽  
Dpph Method ◽  
Ic50 Values ◽  
Experimental Laboratory ◽  
Ethanol Extracts ◽  
Eleutherine Americana

ABSTRACTDayak onion plant (Eleutherine americana Merr.) or commonly called forest onion is a typical plant of Central Kalimantan that has been used by local peoples for cure a various types of diseases. This study aims to determine the activity of antioxidant compounds from Dayak bulb ethanol extracts from Kotamobagu City. This research method is an experimental laboratory. Initially the Dayak bulb sample was extracted maceration with 96% ethanol solvent then evaporated until a thick extract was obtained. As a parameter, the DPPH method (1,1-diphenyl-2-picrylhydrazyl) was used to test the antioxidant activity of the samples at concentrations of 50, 60, 70, 80 and 90 mg / L and as a comparison standard used Vitamin C with concentrations of 2, 4, 6, 8 and 10 mg / L. The results obtained showed antioxidant activity in Dayak bulb ethanol extracts with IC50 values of 41.46 mg / L and on vitamin C IC50 values of 1.04 mg / L. Based on these results it can be concluded that the onion bulb ethanol extract has very strong antioxidant activity. Keywords: Dayak Onion bulbs, Activity, Antioxidant, DPPH  ABSTRAK Tanaman bawang Dayak (Eleutherine americana Merr.) atau biasa disebut bawang hutan merupakan tanaman khas Kalimantan Tengah yang sudah dipergunakan masyarakat lokal sebagai obat berbagai jenis penyakit. Penelitian ini bertujuan untuk mengetahui aktivitas senyawa antioksidan dari ekstrak etanol bulbus bawang Dayak yang berasal dari Kota Kotamobagu. Metode penelitian ini adalah eksperimental laboratorium. Awalnya sampel bulbus bawang Dayak diekstraksi maserasi dengan pelarut etanol 96% kemudian dievaporasi hingga didapatkan ekstrak kental. Sebagai parameter, digunakan metode DPPH (1,1-diphenyl-2-picrylhydrazyl) untuk pengujian aktivitas antioksidan sampel pada konsentrasi 50, 60, 70, 80 dan 90 mg/L dan sebagai standar pembanding digunakan Vitamin C dengan konsentrasi 2, 4, 6, 8 dan 10 mg/L. Hasil penelitian yang didapat menunjukkan aktivitas antioksidan pada ekstrak etanol bulbus bawang Dayak dengan nilai IC50 sebesar 41,46 mg/L dan pada vitamin C nilai IC50 sebesar 1,04 mg/L. Berdasarkan hasil tersebut dapat disimpulkan bahwa ekstrak etanol bulbus bawang Dayak memiliki aktivitas antioksidan yang sangat kuat. Kata kunci: Bulbus Bawang Dayak, Aktivitas, Antioksidan, DPPH

scholarly journals Aktivitas Antioksidan Ekstrak Etanol Daun Ganitri (Elaeocarpus Ganitrus Roxb.) dengan Metode DPPH (2,2 Difenil-1-Pikrilhidazil)

2021 ◽  
Vol 18 (1) ◽  
pp. 60-67
Author(s):  
Naelaz Zukhruf Wakhidatul Kiromah ◽  
Sadam Husein ◽  
Titi Pudji Rahayu
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Leaf Extract ◽  
Ethanol Extract ◽  
Antioxidant Compounds ◽  
Synthetic Antioxidant ◽  
Activity Test ◽  
Impaired Liver ◽  
Ic50 Value ◽  
Dpph Method

Free radicals are one of the cause of various diseases. The use of synthetic antioxidant compounds could prevent the effect of the free radicals, however may cause adverse effects on the human body such as impaired liver, lung, intestinal and poisoning. Therefore antioxidant from natural resources needs to be developed. The purpose of this research was to determine the antioxidant activity and IC50 value of the ethanol extract of ganitri (Elaeocarpus ganitrus Roxbs.) leaves. Ganitri leaf ethanol extract activity test was carried out using DPPH method with vitamin C as a standard. Antioxidant activity was determined as a decreas in the absorbance of DPPH at 517 nm wavelength after an addition of the extract with the concentrations of 20, 40, 80, and 100 ppm. The antioxidant acitivity measurement of the ganitri leaf extract showed that the linier regression equation obtained was y = 0.3669x + 29.546, r = 0.4573 while the IC50 value was 54,12 ppm. Based on the result, it is concluded that the ethanol extract of ganitri (Elaeocarpus ganitrus Roxb.) leaf showed was categorized as strong antioxidant.

scholarly journals UJI AKTIVITAS ANTIOKSIDAN DARI EKSTRAK ETANOL BUNGA KANA MERAH (Canna coccinea Mill) MENGGUNAKAN METODE DPPH

PHARMACON ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 542
Author(s):  
Afrilia Veronika Rumangu ◽  
Adithya Yudistira ◽  
Henki Rotinsulu
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Ornamental Plants ◽  
Radical Scavenging ◽  
Ethanol Extract ◽  
Free Radical Scavenging ◽  
Antioxidant Compounds ◽  
Dpph Method ◽  
The Family ◽  
Concentration Test

Cana plants are flower ornamental plants whose genus or margins are the only ones in the family Cannacea. This study aims to determine the activity of antioxidant compounds from ethanol extract of  Canna coccinea  Mill flower. by using the DPPH method. Flowers Canna coccinea  Mill  extracted using maceration with ethanol as a solvent. As a parameter, testing of antioxidant activity was carried out using the DPPH (1,1 – diphenyl-2-pikrilhidrazil) method which was measured using UV-Vis Spectrophotometry at a wavelength of 517nm. The result showed that ethanol of Canna coccinea Mill,flower proven to have antioxidant activity in each concentration test. The highest concentration has an free radical scavenging activity by reaching of 56,00%.Keywords: Flowers Canna coccinea Mill, Antioxidant, Extraction, DPPH ABSTRAKTanaman kana adalah tanaman hias bunga yang genus atau marganya merupakan satu-satunya dalam family Cannaceae. Penelitian ini bertujuan untuk mengetahui aktivitas senyawa antioksidan dari ekstrak etanol bunga Canna coccinea Mill. dengan menggunakan metode DPPH. Bunga Canna coccinea Mill. diekstraksi menggunakan metode maserasi dengan etanol sebagai pelarut. Sebagai parameter, pengujian aktivitas antioksidan dilakukan dengan metode DPPH (1,1-difenil-2-pikrilhidrazil) yang diukur menggunakan Spektrofotometri UV-Vis pada panjang gelombang 517 nm. Hasil penelitian menunjukkan ekstrak etanol bunga Canna coccinea Mill. terbukti memiliki aktivitas antioksidan disetiap konsentrasi pengujian. Konsentrasi tertinggi memiliki aktivitas penangkal radikal bebas dengan mencapai presentase 56,00%.Kata Kunci : Bunga Canna coccinea Mill, Antioksidan, Ekstraksi, DPPH

scholarly journals EVALUASI AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL SPONS Aplysina sp. DIPESISIR PANTAI LEMBEH KOTA BITUNG

PHARMACON ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 458
Author(s):  
Hendra Hendra ◽  
Adithya Yudistira ◽  
Surya Sumantri
Keyword(s):  
Antioxidant Activity ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Marine Biota ◽  
Terrestrial Plants ◽  
Lembeh Strait ◽  
Dpph Method ◽  
Experimental Laboratory ◽  
Concentration Test ◽  
Free Radical Activity

ABSTRACT Aplysina sp., is one of the marine biota, which forms the coral reefs that contain active compounds, whose percentage of activity is greater than the compounds produced by terrestrial plants. This study aims to analyze the antioxidant activity of the sponge Aplysina sp. Sponge sample Aplysina sp., obtained from the waters of the Lembeh Strait, Bitung. This research is an experimental laboratory by testing the ethanol extract of sponge Aplysina sp., with the DPPH method [1,1-diphenyl-2-picrilhidrazil] to analyze antioxidant activity using a spectrophotometer UV-Vis. The results of this study showed that the ethanolic extract of the sponge Aplysina sp. Lembeh straits waters have antioxidant activity in each concentration test. The highest concentration has an antidote to free radical activity by reaching a percentage of 24,83%. Keywords : Aplysina sp., Antioxidants, Ethanol, DPPH ABSTRAK Spons Aplysina sp. merupakan salah satu biota laut penyusun terumbu karang yang mengandung senyawa aktif yang presentase keaktifannya lebih besar dibandingkan dengan senyawa-senyawa yang dihasilkan oleh tumbuhan darat.Penelitian ini bertujuan untuk menganalisis aktivitas antioksidan dari spons Aplysina sp. Sampel spons Aplysina sp. di peroleh dari perairan Selat Lembeh, Bitung. Penelitian ini merupakan eksperimental laboratorium dengan pengujian terhadap ektrak etanol spons Aplysina sp.dengan metode DPPH [1,1-difenil-2-pikrilhidrazil] untuk menganalisis aktivitas antioksidan dengan menggunakan sprektrofotometer UV-Vis. Hasil penelitian ini memperlihatkan ekstrak etanol spons Aplysina sp.di perairan selat lembeh mempunyai aktivitas antioksidan disetiap konsentrasi pengujiannya. Konsetrasi tertinggi memliki aktivitas penangkal radikal bebas dengan mencapai presentase 24,83%. Kata kunci :Aplysina sp., Antioksidan, Etanol, DPPH

scholarly journals Antioxidant activity ethanol extract of gotu kola (Centella asiatica (L.) Urban) with DPPH method (2,2-Diphenyl-1-Pikrilhidrazil)

2020 ◽  
Vol 3 (2) ◽  
pp. 106
Author(s):  
Muhammad Ainul Yahya ◽  
Iif Hanifa Nurrosyidah
Keyword(s):  
Air Pollution ◽  
Antioxidant Activity ◽  
Free Radicals ◽  
Centella Asiatica ◽  
Ethanol Extract ◽  
The Body ◽  
Antioxidant Compounds ◽  
Test Results ◽  
Ic50 Value ◽  
Dpph Method

Unhealthy lifestyles and air pollution cause the number of free radicals in the body to increase. To protect the body from free radicals, there are antioxidant compounds as an antidote and stabilize free radicals. One of the Indonesian plants that can be used as antioxidants is gotu kola (Centella asiatica (L.) Urban. Objective: This study aims to determine the antioxidant activity of the ethanol extract of gotu kola herb using the DPPH (2,2-Diphenyl-1-pikrilhidrazil) method. with IC50 value. Method: Gotu kola (Centella asiatica (L.) Urban) was extracted by the soxhletation method using 96% ethanol solvent. The testing of antioxidant activity was carried out using the DPPH (2.2 Diphenyl-1-Pikrihydrazil) method. Result: Test results of antioxidant activity The ethanol extract of gotu kola herb showed an IC50 value of 78.20 ppm. Conclusion: This indicated that the ethanol extract of gotu kola herb was included in the criteria for strong antioxidants. 

scholarly journals UJI AKTIVITAS ANTIOKSIDAN ALGA Halimeda opuntia DENGAN METODE DPPH [1,1-difenil-2-pikrilhidrazil]

PHARMACON ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Alfredo Yeheskel Kaligis ◽  
Adithya Yudistira ◽  
Henki Rotinsulu
Keyword(s):  
Antioxidant Activity ◽  
Green Algae ◽  
Value Added ◽  
Ethanol Extract ◽  
Lembeh Strait ◽  
Dpph Method ◽  
Experimental Laboratory

Macroalgae genus Halimeda has potential as an antioxidant. Halimeda Opuntia is one type of green algae that is quite dominant in the waters of Lembeh Strait, Bitung. The research aims to analyse the antioxidant activity of Halimeda Opuntia. This research is an experimental laboratory with testing the ethanol extract of the Halimeda algae with the DPPH method [1,1-difenil-2-pikrilhidrazil] to analyse antioxidant activity by using Spectrophotometer. The research shows the antioxidant levels of Halimeda Opuntia algae in the waters of Lembeh Strait has antioxidant activity and the higher the concentration higher also the antioxidant levels are produced. The highest antioxidant levels are found in the Halimeda opuntia with a concentration of 100mg/L. This results show that extract of Halimeda opuntia possesses a vital potency as an antioxidant that give value added in pharmacy industries.Keywords: Activity, Antioxidants, DPPH, Halimeda opuntia.ABSTRAKMakroalga genus Halimeda terdapat potensi sebagai antioksidan. Halimeda opuntia merupakan salah satu jenis alga hijau yang cukup dominan di perairan Selat Lembeh, Bitung. Penelitian ini bertujuan untuk menganalisis aktivitas antioksidan dari Halimeda opuntia. Penelitian ini merupakan eksperimental laboratorium dengan pengujian terhadap ektrak etanol alga Halimeda opuntia dengan metode DPPH [1,1-difenil-2-pikrilhidrazil] untuk menganalisis aktivitas antioksidan dengan menggunakan spektrofotometer. Hasil penelitian ini memperlihatkan kadar antioksidan dari alga Halimeda opuntia di perairan Selat lembeh mempunyai aktivitas antioksidan dan semakin tinggi konsentrasi semakin tinggi pula kadar antioksidan yang dihasilkan. Kadar antioksidan yang paling besar terdapat pada alga Halimeda opuntia dengan konsentrasi 100mg/L. Hal ini menunjukkan bahwa ekstrak Halimeda opuntia memiliki potensi vital sebagai antioksidan yang memberikan nilai tambah dalam industri farmasi.Kata kunci: Aktivitas, Antioksidan, DPPH, Halimeda opuntia.

scholarly journals In-Vitro Study of Antioxidant Activities from Ethanol Extracts of Akar Kuning (Arcangelisia flava)

2019 ◽  
Vol 4 (2) ◽  
pp. 66-71
Author(s):  
Suratno Suratno ◽  
Muhammad Ikhwan Rizki ◽  
Mohammad Rizki Fadhil Pratama
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
In Vitro Study ◽  
Ethanol Extract ◽  
Antioxidant Compounds ◽  
Dpph Method ◽  
Ic50 Values ◽  
Stem Extract ◽  
Ethanol Extracts

This study aims to determine the antioxidant activity of akar kuning (Arcangelisia flava) stem extract from Central Kalimantan using 1,1-diphenyl-2-picrylhydrazyl (DPPH) method. This research includes extraction of simplicia and test of antioxidant activity by DPPH method. Based on the analysis of antioxidant activity on ethanol extract from yellow root plant stem IC50 values of 136.81 ppm were obtained. This IC50 value indicates the antioxidant strength of the yellow root plant stems including in the moderate category. Further research on antioxidant activity in the fraction of akar kuning stems needs to be done to determine the composition of the antioxidant compounds in each solvent.

scholarly journals UJI AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL SPONS (Stylissa sp.) YANG DIKOLEKSI DARI TELUK MANADO

PHARMACON ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 756
Author(s):  
Krisnawati Sukmaningrum ◽  
Adithya Yudistira ◽  
Irma Antasionasti
Keyword(s):  
Antioxidant Activity ◽  
Active Compound ◽  
Ethanol Extract ◽  
Dpph Method ◽  
Experimental Laboratory

ABSTRACTThe Stylissa sp. were under the sea, and these sponge contains active compound, wich are more active than the compounds produced by teresterial plants. The purpose of this  study was intended to test the antioxidant activity of the stylissa sp. Sample of the stylissa sp sponge was from the territorial of manado bay. This research an experimental laboratory by testing the ethanol extract of Stylissa sp sponge using  DPPH method (1.1-diphenil-2-pikrhydrazil) to analyze antioxidant activity using spectrophotometri uv-vis with variations in concentrations 2, 4, 6, 8, and 10mg/ L. Was extracted Stylissa sp, sponge by maceration using ethanol 95% as a solvent. The  value results of % inhibisi (2mg/ L); 86.50% (4mg/ L); 90.5% (6mg/L); 90.53% (8mg/ L) and 90,83 (10mg/L). The highest antioxidant activity at 10mg/L concentration with mean precentage 90.83% inhibisi. The result for this study indicate that the extract from ethanol Stylissa sp  sponge has highest antioxidant activity.Keywords: Antioxidant, DPPH, Stylissa sp., bay of Manado ABSTRAKSpons Stylissa sp. terdapat di bawah laut dan spons ini mengandung senyawa aktif yang persentase keaktifannya lebih besar dibandingkan dengan senyawa-senyawa yang dihasilkan oleh tumbuhan darat. Penelitian ini bertujuan untuk menguji aktivitas antioksidan dari Stylissa sp. Sampel Spons Stylissa sp. di peroleh dari perairan Teluk Manado. Penelitian ini merupakan eksperimental laboratorium dengan pengujian terhadap ekstrak etanol Spons Stylissa sp dengan metode DPPH (1,1-diphenil-2-pikrihidrazil) untuk menguji aktivitas antioksidan yang diukur menggunakan Spektrofotometri UV-Vis dengan variasi konsentrasi 2, 4, 6, 8, dan 10mg/L. Ekstrak Spons Stylissa sp diperoleh dengan cara maserasi menggunakan pelarut etanol 95%. Hasil nilai % inhibisi rata-rata yang didapat yaitu 87,20% (2mg/L); 86,50% (4mg/L); 90,5% (6mg/L); 90,53% (8mg/L) dan 90,83 (10mg/L). Aktivitas antioksidan tertinggi terdapat pada konsentrasi 10mg/L  dengan nilai % inhibisi rata-rata 90,83%. Hal ini menunjukkan bahwa ekstrak etanol Spons Stylissa sp memiliki aktivitas antioksidan yang tinggi.Kata kunci : Antioksidan, DPPH, Spons Stylissa sp., Teluk Manado

scholarly journals Aktivitas Antioksidan Ekstrak Etanol Muntingia calabura dengan Variasi Laju Pengadukan Menggunakan Macerator-Magnetic Stirrer (M-MS)

2020 ◽  
Vol 7 (2) ◽  
pp. 27
Author(s):  
Muhammad Zaini ◽  
Hajrah Hidriya ◽  
Japeri Japeri
Keyword(s):  
Antioxidant Activity ◽  
Ethanol Extract ◽  
Natural Compounds ◽  
Extraction Methods ◽  
Magnetic Stirrer ◽  
Stirring Rate ◽  
Yield Value ◽  
Dpph Method ◽  
Chemical Content ◽  
Muntingia Calabura

Maserasi merupakan salah satu metode ekstraksi yang digunakan untuk menarik kandungan kimia dari bahan alam. Macerator Magnetic Stirrer (M-MS) merupakan alat yang dikembangkan untuk memaksimalkan proses maserasi melalui pengadukan secara berkesinambungan. Tujuan penelitian ini adalah untuk mengetahui efektivitas penggunaan M-MS dalam proses ekstraksi senyawa bahan alam. Parameter yang digunakan yaitu persentase zat terekstraksi (% rendemen) dan aktivitas antioksidan (IC50) ekstrak etanol Muntingia calabura (EEMC) menggunakan metode DPPH (2,2-Diphenyl-1-Picrylhydrazil). Pengujian dilakukan terhadap simplisia daun Muntingia calabura yang  dimaserasi selama 24 jam menggunakan etanol 95% dengan maserator konvensional, M-MS dengan laju pengadukan 200 rpm dan 300 rpm. Pengadukan dengan maserator konvensional dilakukan sebanyak 3 kali setiap 8 jam, sedangkan dengan M-MS dilakukan secara kontinyu selama 24 jam. Nilai % rendemen EEMC dari maserator konevnsional, M-MS 200 rpm dan 300 rpm secara berturut-turut adalah 7,6 %, 8,4 % dan 10,2 %. Hasil uji aktivitas antioksidan menghasilkan nilai IC50 EEMC dengan maserator konvensional sebesar 18,19 ppm, M-MS 200 rpm adalah 14,35 ppm dan 300 rpm adalah 7,85 ppm. Nilai IC50 untuk masing-masing uji menunjukan < 50 ppm yang termasuk dalam kategori sangat kuat. Ekstraksi EEMC paling efektif adalah menggunakan M-MS dengan laju pengadukan 300 rpm. The maceration is one of the extraction methods used to extract chemical content from natural compounds. Macerator Magnetic Stirrer (M-MS) is a tool developed to maximize the maceration process through continuous stirring. The purpose of this study was to determine the effectiveness of using M-MS in the process of extracting natural compounds. The parameters used were the percentage of extracted substance (% yield) and antioxidant activity (IC50) of ethanol extract of Muntingia calabura (EEMC) using the DPPH method (2,2-Diphenyl-1-Picrylhydrazil). Tests were carried out on the simplicia of Muntingia calabura leaves which were macerated for 24 hours using 95% ethanol with a conventional macerator, M-MS with a stirring rate of 200 rpm and 300 rpm. Stirring with a conventional macerator was carried out 3 times every 8 hours, while with M-MS it was done continuously for 24 hours. EEMC yield value respectively of conventional macerator, M-MS at 200 rpm and 300 rpm showed 7.6 %, 8.4% and 10.2 %. The results of the antioxidant activity test resulted in the IC50 EEMC value with a conventional macerator is 18.19 ppm, M-MS 200 rpm is 14.35 ppm and 300 rpm is 7.85 ppm. The IC50 value for each test shows <50 ppm which is included in the very strong category. The most effective EEMC extraction is using M-MS with a stirring rate of 300 rpm.Keywords: maceration, M-MS, EEMC, antioxidant

scholarly journals UJI AKTIVITAS ANTIOKSIDAN SPONS Stylissa sp. DENGAN MENGGUNAKAN METODE DPPH (1,1-difenil-2-pikrilhidrazil)

PHARMACON ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 419
Author(s):  
Samuel I.M. Sibarani ◽  
Adithya Yudistira ◽  
Deby A. Mpila
Keyword(s):  
Antioxidant Activity ◽  
Cell Wall ◽  
Free Radicals ◽  
Ethanol Extract ◽  
Dna Bases ◽  
Oxidation Reactions ◽  
Terrestrial Plants ◽  
Dpph Method ◽  
High Antioxidant Activity ◽  
Ethanol Extracts

ABSTRACTHabitat of sponge Stylissa sp., were under the sea and these sponges contain active compounds, which are more active than the compounds produced by terrestrial plants. Antioxidants are inhibitors of oxidation reactions due to the free radicals, which can cause weak damage to unsaturated cells, cell wall membranes, blood vessels, DNA bases, and lipid tissue, that causing disease. The study was conducted to determine the antioxidant activity of ethanol extracts  of sponge Stylissa sp., which is located on the Bangka Island, Likupang District, North Minahasa Regency. Sponge Stylissa sp., was extracted by maceration with using ethanol. Testing of antioxidant activity was carried out by the DPPH method measured by a UV-Vis spectrophotometer. The results of the study showed that ethanol extracts of sponge Stylissa sp., has antioxidant activity in each concentration and the highest at a concentration of 100 mg / L. The conclusion is a ethanol extract of sponge Stylissa sp. have high antioxidant activity with a concentration of 25 mg/L (77,40%), concentration of 50 mg/L (85,63%), concentration of 75 mg/L (88,66%), and concentration 100 mg/L (88,96%). Key words: Stylissa sp. Sponge, Antioxidant, DPPH (1,1-diphenyl-2-picrylhydrazyl) ABSTRAKHabitat dari spons Stylissa sp. terdapat di bawah laut dan spons ini mengandung senyawa aktif yang persentase keaktifannya lebih besar dibandingkan dengan senyawa-senyawa yang dihasilkan oleh tumbuhan darat. Antioksidan adalah zat penghambat reaksi oksidasi akibat radikal bebas yang dapat menyebabkan kerusakan lemah tak jenuh, membran dinding sel, pembuluh darah, basa DNA, dan jaringan lipid sehingga menimbulkan penyakit. Penelitian dilakukan untuk mengetahui aktivitas antioksidan ekstrak etanol biota laut spons Stylissa sp. yang terdapat di pulau Bangka, Kecamatan Likupang, Kabupaten Minahasa Utara. Spons Stylissa sp. ini diekstrak dengan metode maserasi menggunakan etanol. Pengujian aktivitas antioksidan ini dilakukan dengan metode DPPH yang diukur dengan alat spektrofotometer UV-Vis. Hasil dari penelitian menunjukan bahwa ekstrak etanol spons Stylissa sp. memiliki aktivitas antioksidan disetiap konsentrasi dan yang tertinggi pada konsentrasi 100 mg/L. Kesimpulan yang didapat bahwa ekstrak etanol spons Stylissa sp. memiliki aktivitas antioksidan yang tinggi dengan konsentrasi 25 mg/L (77,40%), konsentrasi 50 mg/L (85,63%), konsentrasi 75 mg/L (88,66%), dan konsentrasi 100 mg/L (88,96%). Kata Kunci : Spons Stylissa sp., Antioksidan, DPPH (1,1-difenil-2-pikrilhidrazil)

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