8 research outputs found
PEMURNIAN CATECHIN DARI GAMBIR KOTO PANJANG, PESISIR SELATAN
No full textVol 5 No 1ABSTRACT The research about catechin purification from gambier was purposed to find its solubility properties in various solvent such as in cold water, hot water, hexane, ethyl acetate, and methanol. By knowing its solubility properties, the easiest way to purify the catechin could be gotten which is yielding about 7.33%. Further, the molecular structure has been gotten by determining its melting point and using spectrophotometric measurements such as UV, IR, 1H NMR, 13C NMR. Based on those measurements, d-cathecin structure with a melting point of 175 - 177 ºC was founded. The expected benefit from this research is it could be benefiting the development of gambier purification industry in order to enhancing added value of West Sumatera’s commodities. It would make Western Sumatera gaining stronger bargaining position due to the capability on selling not only on the crude form to abroad. The result of this research has indicated that catechin purification can be performed using an organic solvent and water. Keywords: Purification, catechin, gambier</jats:p
STUDI PEMURNIAN GAMBIR (Uncaria gambir Roxb) DENGAN MENGGUNAKAN ARANG AKTIF DARI TEMPURUNG KELAPA SAWIT SEBAGAI ADSORBEN
No full text ABSTRACTThe purpose of this research is to know the effect of particle size and concentration activator MgCl2 to effectiveness the active carbon and examine the ability of the best active carbon that produced as adsorben to purifying gambier. This research is done in 3 steps: (A) the making of the active carbon from variety of size : ≥ 250µm (A1),180µm < F ≤ 250µm (A2), 125µm < F ≤ 80 µm (A3) and F ≤ 125 (A4) and some the activator concentration MgC12 : 0% (B1), 20% (B2), 40% (B3), 60% (B4) and 80% (B5), (B) the testing quality of the active carbon include the content of water and adsorbable Iod and (C) the testing of active carbon as adsorben to purifying of gambier. To examine about the quality of active carbon got the best active carbon from carbon of coconut shell of sawit by size ≤ 125µm with activator concentration 20% MgC12 with the content of water 2.23% and adsorbable Iod 3080.97 (mg/g). The gambir rendemen the best purifying that produced is 55.5% by the content of dust 1.303% and the content of catechin 72.40%. Keywords: Catechin compounds, Active carbon. </jats:p
Tubuh sebagai Manifesto: Pandangan Politik Sally Rooney dalam Normal People
No full textThis research explores the role of the body in the Irish literary work, Normal People. Written by renowned Irish author Sally Rooney, the novel narrates how contemporary Irish society experiences shifts in its social structure. It delves into the lives of young Irish characters as they navigate social and political upheaval in relation to the Western culture that serves as their cultural axis. This culture is, in part, represented through the colonized form of the body. Rooney elevates this concept to emphasize her political stance that the body has become a manifesto in the ideological struggle against the encroaching Western influences. By employing Lucien Goldmann’s theoretical framework, this article demonstrates the intersection of the body and alcohol, connecting the historical memory of the Republic of Ireland with Northern Ireland. Moreover, the article contends that the United States of America has colonized the bodies of the Republic of Ireland’s society through the consumer patterns of popular culture introduced in television advertisements.Keywords – Alcohol, Colonization, Political Beliefs, Popular Culture, Television Commercials
Identifikasi Senyawa Metabolit Sekunder, Uji Aktivitas Antioksidan, dan Uji Fenolik Total dariEkstrak Daun Benalu Jengkol (Scurrula ferruginea (Jack) Danser)
No full textABSTRACT
IDENTIFICATION OF SECONDARY METABOLITE COMPOUNDS, ANTIOXIDANT ACTIVITY TEST AND TOTAL PHENOLIC CONTENT OF LEAF EXTRACT OF JENGKOL PARASITE (Scurrula ferruginea (Jack.) Danser.)
By:
Alldila Ramadhani Rusita (BP 1310411015)
*Norman Ferdinal, M.Si, *Dr. Adlis Santoni
*Preceptor
ABSTRACT
Identification of secondary metabolite compounds, antioxidant activity test and total phenolic content of leaf extract of jengkol parasite (Scurrula ferruginea (Jack) Danser) have been done. Leaf extraction of parasite is done by maceration. Secondary metabolites contained in jengkol leaves are alkaloids, phenolic, and steroids. This study aims to determine the total phenolic content and antioxidant activity in the leaf extract of leaf parasite jengkol. Methanol, ethyl acetat, and hexane solvent are used to extract chemical compounds by maceration method. Determination of total phenolic content by Folin-Ciocalteau method and antioxidant activity by DPPH (1,1-diphenyl-2-pycrilhydrazil) method. Research result showed that the highest total phenolic content was found in the methanol extract (1,05 mg GAE/10 mg dry extract). Antioxidant activity third extract methanol with IC50 value (141,7723 mg/L) classified as medium antioxidant, while extracts of ethyl acetat (295,3028 mg/L) and extracts of hexane (358,0365 mg/L) classified as weak antioxidant.
Key words: Scurrula ferruginea (Jack.) Danser., antioxidant, total phenoli
PENENTUAN AKTIVITAS ANTIOKSIDAN, KANDUNGAN FENOLIK TOTAL, DAN TOKSISITAS DAUN JARAK MERAH (Jatropha gossypifolia (L.))
No full textPENENTUAN AKTIVITAS ANTIOKSIDAN, KANDUNGAN FENOLIK TOTAL, DAN TOKSISITAS DAUN JARAK MERAH (Jatropha gossypifolia (L.))
Oleh :
Cynthia Mayasari Wijaya (BP 1410411033)
Norman Ferdinal M.Si*, Prof. Dr. Adlis Santoni*
*Pembimbing
Jarak merah merupakan salah satu tumbuhan liar yang ditemukan di berbagai daerah di Indonesia. Secara tradisional telah banyak dimanfaatkan dalam pengobatan diabetes, hipertensi, malaria, antiseptik, luka bakar, insektisida, pestisida, dan bisa gigitan ular. Pada penelitian ini dilakukan penentuan total fenolik dengan metode Folin-Ciocalteau, uji aktivitas antioksidan dengan metode DPPH (1,1-diphenyl-2-picrylhydrazyl), dan uji toksisitas dengan metode Brine Shrimp Lethality Test (BSLT) dari sampel yang diekstraksi dengan metode maserasi mengunakan 3 macam pelarut. Hasil penelitian menunjukkan ekstrak metanol memiliki kandungan fenolik total terbesar (5,345 mg GAE/10 mg ekstrak kering) diikuti ekstrak etil asetat (3,15 mg GAE/10 mg ekstrak kering) dan ekstrak heksana (0,61 mg GAE/10 mg ekstrak kering). Aktivitas antioksidan dilihat dari nilai IC50 secara ekstrak metanol 29,568 mg/L yang bersifat kuat, etil asetat 87,116 mg/L yang bersifat aktif, dan heksana 594,392 mg/L yang bersifat tidak aktif. Hasil uji toksisitas dilihat dari nilai LC50 ekstrak etil asetat memiliki sifat sangat toksik (16,4589 mg/L), serta memiliki sifat toksik pada ekstrak heksan (59,7310 mg/L) dan metanol (97,3640 mg/L).
Kata kunci : Jatropha gossypifolia L., antioksidan, fenolik total, toksisita
A Simple Purification Method of Catechin from Gambier
No full textIsolation of catechin gambier has been done by maceration using methanol, then treated with water. For purification using ethyl acetate-Hexana with only one repetition time, this is a much simpler way than previous studies. The result catechins weighing 9.594 g from 21,997 g of dirty catechins, with TL = 175.5 to 177.2 ° C, the maximum wavelength of 280.10 nm by UV spectroscopy and the presence of OH groups, stretching C-O, C = C aromatic and alkane CH stretching, followed by CH2 bend by IR spectroscopy
Analysis of Chemical Content, Cytotoxic and Anti-Bacterial Activity Essential Oil of Lantana Camara Linn Leaves from Various Regions
No full textLantana camara Linn is a family of Verbenaceae that grows in tropical and subtropical areas and spread in about 50 countries in the world. This plant contains essential oils with different contents based on the difference in the place of growth. The purpose of this study was to isolate and determine the chemical content of the essential oil of L. camara Linn leaves obtained from Agam, Tanah Datar, Kampar Regency, Padang Panjang City and to determine its cytotoxic and antibacterial activity. Isolation was carried out by hydro distillation method and chemical content analysis using Gas Chromatography-Mass Spectrometry (GC-MS). The high yield from the isolation of essential oil from leaves of L. camara Linn obtained from Tanah Datar Regency was 0.095% (w/w). The results of the analysis of the essential oil content with the main compounds for all Regency and City being caryophyllene with the high area percent was Tanah Datar Regency (19.74%). Cytotoxic activity test using the Brine Shrimp Lethality Test (BSLT) method showed that L. camara Linn essential oil was highly toxic with an LC50 value of 28.34 µg/mL from Padang Panjang City. Antibacterial activity test by disc diffusion method showed that L. camara Linn essential oil had moderate antibacterial activity againts Staphylococcus aureus and Escherichia coli bacteria, with high clear zone from Agam Regency was 12.9 mm and Tanah Datar Regency was 7.8 mm, respectively, at concentration of 100%
