?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENENTUAN+AKTIVITAS+ANTIOKSIDAN+FIKOBILIPROTEIN+DARI%0D%0APorphyridium+cruentum+MENGGUNAKAN+METODE+VOLTAMMETRI%0D%0A%0D%0ASIKLIK&rft.creator=ANISA+SAFITRI%2C+1517011070&rft.subject=502+Aneka+ragam+tentang+ilmu+pengetahuan+alam&rft.description=Peranan+senyawa+antioksidan+menjadi+sangat+penting+saat+ini%2C+dikarenakan%0D%0Ameningkatnya+dampak+dari+radikal+bebas.+Dampak+dari+senyawa+radikal+bebas%0D%0Apada+konsentrasi+yang+tinggi+dapat+menimbulkan+penyakit+kronis%2C+kerusakan%0D%0ADNA%2C+dan+jaringan.+Antioksidan+dapat+menangkal+radikal+bebas+dan+juga%0D%0Amerupakan+senyawa+pemberi+elektron+atau+reduktan.+Penelitian+ini+bertujuan%0D%0Auntuk+menentukan+aktivitas+antioksidan+fikobiliprotein+dari+P.+cruentum+pada%0D%0AMEBIT+(+Media+Efluen+Biogas+Industri+Tapioka)+dengan+metode+voltammetri%0D%0Asiklik.+Tahapan+penelitian+ini+dibagi+menjadi+sampling+dan+karakterisasi+MEBIT%2C%0D%0Akultivasi+mikroalga%2C+pemanenan%2C+ekstraksi%2C+pemurnian+fikobiliprotein%0D%0Amenggunakan+kromatografi+kolom+hidroksiapetit%2C+karakterisasi+fikobiliprotein%2C%0D%0Apengukuran+antioksidan+menggunakan+metode+voltammetri+siklik.+MEBIT+yang%0D%0Adikarakterisasi+pada+penelitian+ini+terdapat+kandungan+nitrogen+(N)%2C+fosfat%2C+dan%0D%0Aorganik+karbon+(C)+yang+dibutuhkan+oleh+mikroalga+P.cruentum+sebagai%0D%0Amakronutrien.+Pertumbuhannya+menunjukkan+adanya+fase+lag+pada+kultur+media%0D%0AMEBIT+mulai+dari+hari+ke-0+sampai+hari+ke-2%2Cdan+fase+eksponensial+dari+hari+ke-1%0D%0Asampai+hari+ke-8.+Fase+eksponensial+P.cruentum+pada+media+f%2F2+dan+MEBIT%0D%0Aterjadi+sampai+hari+ke-8+dilihat+dari+nilai+Optical+Density+(OD)+dengan+nilai%0D%0Aabsorbansi+masing-+masing+0%2C75+dan+0%2C60.+Pemanenan+mikroalga+P.cruentum%0D%0Amenghasilkan+biomassa+sebanyak+2%2C4+g%2FL.+Identifikasi+ekstrak+kasar+maupun%0D%0Amurni+dari+fikobiliprotein+menggunakan+spektrofotometer+UV-Vis+muncul%0D%0Aserapan+pada+546+dan+280+nm.+Data+menunjukkan+kemurnian+fikoeretrin+sebesar%0D%0A17%2C20%2C+lebih+tinggi+dibandingkan+dengan+kemurnian+ekstrak+kasar+fikobiliprotein%0D%0Asebesar+2%2C56.+Voltammogram+pigmen+murni+fikoeretrin+dan+ekstrak+kasar%0D%0Afikobiliprotein+dari+P.+cruentum+sama-+sama+diperoleh+pada+daerah+%2B1%2C1+V.%0D%0A%0D%0AKata+kunci%3A+Antioksidan%2C+MEBIT%2C+P.+cruentum%2C+fikobiliprotein%2C+fikoeretrin.%0D%0AThe+role+of+antioxidant+compounds+is+very+important+at+this+time%2C+due+to+the%0D%0Aincreasing+impact+of+free+radicals.+The+impact+of+free+radical+compounds+at+high%0D%0Aconcentrations+can+cause+chronic+disease%2C+DNA+and+tissue+damage.+Antioxidants%0D%0Acan+counteract+free+radicals+and+are+also+electron+donating+compounds+or%0D%0Areductants.+This+study+aimed+to+determine+the+antioxidant+activity+of%0D%0Aphycobiliproteins+from+P.+cruentum+in+MEBIT+(Medium+Effluent+Biogas+Tapioca%0D%0AIndustry)+by+cyclic+voltammetry+method.+The+stages+of+this+research+were+divided%0D%0Ainto+MEBIT+sampling+and+characterization%2C+microalgae+cultivation%2C+harvesting%2C%0D%0Aextraction%2C+purification+of+phycobiliproteins+using+hydroxyapetite+column%0D%0Achromatography%2C+phycobiliprotein+characterization%2C+and+measurement+of%0D%0Aantioxidants+using+cyclic+voltammetry+method.+MEBIT+which+was+characterized%0D%0Ain+this+study+contained+nitrogen+(N)%2C+phosphate%2C+and+organic+carbon+(C)+content%0D%0Arequired+by+P.+cruentum+microalgae+as+macronutrients.+Its+growth+showed+a+lag%0D%0Aphase+in+MEBIT+media+culture+starting+from+day+0+to+day+2%2C+and+an+exponential%0D%0Aphase+from+day+1+to+day+8.+The+exponential+phase+of+P.cruentum+on+media+f%2F2+and%0D%0AMEBIT+occurred+until+day+8+seen+from+the+value+of+Optical+Density+(OD)+with%0D%0Aabsorbance+values+of+0.75+and+0.60%2C+respectively.+Harvesting+P.cruentum%0D%0Amicroalgae+produced+biomass+of+2.4+g%2FL.+Identification+of+crude+and+pure+extracts%0D%0Aof+phycobiliprotein+using+UV-Vis+spectrophotometer+showed+absorption+at+546%0D%0Aand+280+nm.+The+data+shows+the+purity+of+phycoerethrin+is+17.20%2C+higher+than+the%0D%0Apurity+of+the+crude+extract+of+phycobiliprotein+which+is+2.56.+Voltammograms+of%0D%0Apure+pigment+phycoerethrin+and+crude+extract+of+phycobiliprotein+from+P.%0D%0Acruentum+were+both+obtained+in+the+%2B1.1+V+region.%0D%0A%0D%0AKeywords%3A+Antioxidant%2C+MEBIT%2C+P.+cruentum%2C+phycobiliprotein%2C+phycoerethrin.&rft.publisher=FAKULTAS+MATEMATIKA+ILMU+PENGETAHUAN+ALAM&rft.date=2021&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F61331%2F1%2FABSTRAK%2520-%2520Anisa%2520Safitri.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F61331%2F2%2FSKRIPSI%2520FULL%2520-%2520Anisa%2520Safitri.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F61331%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN%2520-%2520Anisa%2520Safitri.pdf&rft.identifier=++ANISA+SAFITRI%2C+1517011070++(2021)+PENENTUAN+AKTIVITAS+ANTIOKSIDAN+FIKOBILIPROTEIN+DARI+Porphyridium+cruentum+MENGGUNAKAN+METODE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