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EKSTRAKSI FIKOSIANIN DARI SPIRULINA PLANTESIS SEBAGAI BIOPIGMEN DAN ANTIOKSIDAN Siti Irma Rahmawati; Syarif Hidayatullah; Mira Suprayatmi
Jurnal Pertanian Vol. 8 No. 1 (2017)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (865.657 KB) | DOI: 10.30997/jp.v8i1.639

Abstract

Pewarna alami lebih disukai karena tidak memiliki efek yang negatif terhadap tubuh manusia sehingga mempunyai tingkat keamanan pangan yang tinggi, selain itu juga pewarna alami mudah diuraikan. Bahan pewarna alami bisa diperoleh dari berbagai jenis sumber, salah satunya yaitu spesies alga yang merupakan tumbuhan tingkat rendah di perairan. Alga terdapat 2 jenis yaitu makroalga yang berukuran besar dan mikroalga yang berukuran kecil (renik). Spesies mikroalga yang dapat menghasilkan pewarna alami salah satunya adalah Spirulina. Jenis pewarna alami yang terkandung pada mikroalga tersebut yaitu fikosianin. Pada penelitian ini, dilakukan ekstraksi fikosianin dari Spirulina platensis dengan menggunakan tiga metode berbeda yaitu Maserasi, Ultrasound-Assisted-Extraction (UAE) dan Freezing untuk mengetahui metode mana untuk menghasilkan yield dan antioksidan tertinggi dari ekstrak yang dihasilkan. Hasil dari penelitian ini didapatkan bahwa berdasarkan nilai yield tertinggi dan kandungan fikosianin, freezing merupakan metode ekstraksi terbaik dengan kandungan fikosianin yang paling tinggi yaitu sebesar 26,53%. Sedangkan nilai aktivitas antioksidan terbesar dihasilkan oleh metode ekstraksi maserasi dengan nilai IC50 sebesar 49,59 ppm. Fikosianin yang dihasilkan dari ketiga metode ekstraksi termasuk antioksidan kuat.KATA KUNCI: ekstraksi, Spirulina plantesis, fikosianin, biopigmen, antioksidanEXTRACTION OF PHYCOCYANIN FROM SPIRULINA PLANTESIS FOR BIOPIGMENT AND ANTIOXIDANTABSTRACTRecently, biopigment known as a pigment which has no impact and easy to degradated in human body and better than artificial pigment. Biopigment can be resulted from the extraction of algae that are living in the water. Spirulina plantesis is one of algae resulting a pigment and known as phycocyanin. In this research, extraction of phycocyanin was done by three method of extractions; maceration, Ultrasound-Assisted-Extraction (UAE) and Freeze-thaw. Those extraction methods were compared to decide which method that resulted highest yield of extraction and has highest antioxidant activities. From the resulted data, the highest yield and highest phycocyanin concentration was obtained by freeze-thaw extraction method. Phycocyanin concentration from freeze-thaw ectract was 26,53% (w/w). However, the highest antioxidant activities was obtained by maceraion extraction mehod. The IC50 of extract from maceration was 49,59 ppm. Hence, all extracts from different extraction methods resulted high antioxidant activities. 
METODE EKSTRAKSI DNA UNTUK DETEKSI MOLEKULER Rosy Hutami; N Idzni; R Ranasasmita; Mira Suprayatmi
Jurnal Pertanian Vol. 8 No. 2 (2017): OCTOBER
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (714.715 KB) | DOI: 10.30997/jp.v8i2.1056

Abstract

Dalam teknik deteksi molekuler seperti Loop-Amplification Mediated Polymorphism (LAMP) dan Polymerase Chain Reaction (PCR), pembuatan hulu asam deoksiribonukleat (DNA) sangat penting. Ekstraksi fase cair dan ekstraksi fasa padat merupakan beberapa metode ekstraksi DNA yang tersedia. Tujuan dari penelitian ini adalah untuk mengkarakterisasi metode dan produk ekstraksi DNA berdasarkan kemurnian DNA, visualisasi DNA, konsentrasi DNA, dan waktu pemrosesan metode ekstraksi DNA. Metode ekstraksi yang dievaluasi meliputi metode fenol-kloroform (Metode A) sebagai ekstraksi fasa cair dan metode Ekstraksi Surefood kit (Metode B) sebagai ekstraksi fasa padat. Hasil penelitian menunjukkan bahwa Metode A dapat dilakukan pada sampel dengan konsentrasi DNA sangat rendah berkisar antara 7,00 sampai 9,45 ng / μl dengan kemurnian yang baik (1,80-2,10). Meski tidak menunjukkan DNA isolat band pada gel agarosa 1% dan membutuhkan waktu pemrosesan ± 30 jam. Metode B memiliki performa yang baik dalam mengekstraksi sampel dengan DNA dengan konsentrasi tinggi (49,67 sampai 357,28 ng / μl) dengan kemurnian yang baik (1,93 sampai 2,07). Metode ini menunjukkan band untuk setiap sampel DNA pada gel agarose 1% dan membutuhkan waktu ±1 jam. Kedua metode tersebut dapat digunakan untuk preparasi sampel dalam analisis molekuler termasuk tujuan otentikasi halal.KATA KUNCI: fenol, kloroform, Surefood kit, LAMP  DNA EXTRACTION METHOD FOR MOLECULAR DETECTIONABSTRACTIn molecular detection technique such as Loop-Amplification Mediated Polymorphism (LAMP) and Polymerase Chain Reaction (PCR), right upstream preparation of deoxyribonucleic acid (DNA) is very important. Liquid phase extraction and solid phase extraction are some of DNA extraction methods those are available. The purpose of this research was to characterizedthe method and product of DNA extraction based on DNA purity, DNA visualization, DNA concentration, and processing time of DNA extraction methods. Extraction methods evaluated included phenol-chloroform method (Method A)as liquid phase extraction and Surefood Extraction kit method (Method B) as solid phase extraction. Result showed that Method A could be performed on samples with very low DNA concentrations ranging from 7.00 to 9.45 ng/µl with a good purity (1.80 to 2.10). Although,  it showed no DNA isolates bands on gel agarose 1% and need ± 30 hours processing time. Method B had a good performa in extracting sample with high concentration DNA (49.67 to 357.28 ng/µl) with a good purity (1.93 to 2.07). This method showed bands for each DNA samples on gel agarose 1% and need about ± 1 hour processing time. Both methods can be used for sample preparation in molecular analysis including halal authentication purposes.  
MINUMAN FUNGSIONAL READY TO DRINK BERBAHAN BAKU REMPAH LOKAL Mardiah Mardiah; Rafiqa Noor; Mira Suprayatmi; Elisa Listianti
Jurnal Ilmiah Pangan Halal Vol. 1 No. 2 (2019): Jurnal Ilmiah Pangan Halal
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/jiph.v1i2.3104

Abstract

The purpose of this study was to study the extraction process of spices, obtain selected formulations based on organoleptic tests and physical stability tests. The research methodology is divided into two stages: the first stage is determining the composition of the spices (ginger, tamarind, turmeric, cardamom,  lemongrass, cinnamon and cloves), using a one factor design that is the difference in the composition of the spices with 3 levels of treatment, namely (A1), (A2) and (A3) .   The second stage uses the formula selected from the first stage and then is treated with 3 concentrations of spice extract (15%, 20% dan 25%) and the concentration of additional CMC (0%, 0.05% , 0.1% ). The results stated that the selected products were A3 composition spices (7.5% Curcuma xanthorrhiza extract, 25% tamarindus indica extract, 10% turmeric extract, 15% cardamom extract, 15% cinnamon extract, 15% lemongrass extract, 12.5% clove extract) with concentrations herbs 15% and CMC concentration 0.1%. This product was chosen because it was rated the most preferred. The results of physical stability analysis of selected products are quite stable with a sedimentation height of 0.04 cm on the 16th day. The selected product has a pH of 3.44, with a curcumin value of 13.70 ppm, and a total phenol of 31 ppm and an antioxidant of 2.97 ppm.