?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=AKTIVITAS+ANTIOKSIDAN+DAN+ANTIBAKTERI+EKSTRAK+ETANOL%0D%0ADAUN+KOPI+ROBUSTA+LAMPUNG+BARAT+(Coffee+canephora)+DENGAN%0D%0A%0D%0AMETODE+ULTRASONIC+ASSISTED+EXTRACTION&rft.creator=Jesica+%2C+Virginia%09&rft.subject=610+Ilmu+kedokteran%2C+ilmu+pengobatan+dan+ilmu+kesehatan&rft.description=Latar+Belakang%3A+Tanaman+kopi+biasanya+dipangkas+daunnya+agar+tidak%0D%0Amenyulitkan+hasil+pemanenan+dan+mendorong+pembungaan+serta+meningkatkan%0D%0Apembuahan.+Daun+kopi+hasil+pemangkasan+biasanya+terbuang+begitu+saja+sehingga%0D%0Aperlu+pemanfaatan+lebih+lanjut%2C+dimana+daun+kopi+memiliki+potensi+sebagai+agen%0D%0Aterapi+dalam+pengobatan+tradisional+dan+berpotensi+memiliki+aktivitas+antioksidan%0D%0Adan+antibakteri+karena+kandungan+fenolnya+yang+tinggi.+Penelitian+ini%2C+bertujuan%0D%0Auntuk+mengetahui+aktivitas+antioksidan+dan+antibakteri+yang+terkandung+pada+daun%0D%0Akopi+robusta.%0D%0AMetode%3A+Penelitian+ini+merupakan+penelitian+eksperimental+skala+laboratorium.%0D%0AEkstraksi+dilakukan+dengan+metode+sonikasi%2C+pengukuran+total+fenolik+dengan%0D%0Ametode+Folin-Ciocalteu+dan+pengukuran+total+flavonoid+dengan+metode%0D%0Akolorimetri.+Uji+aktivitas+antioksidan+dengan+metode+DPPH+serta+uji+aktivitas%0D%0Aantibakteri+dengan+metode+difusi+silinder.%0D%0AHasil%3A+Ekstrak+daun+kopi+robusta+memiliki+aktivitas+antioksidan+sangat+kuat+dengan%0D%0Anilai+IC50+34%2C26+ppm%2C+Nilai+kadar+total+fenolik+sebesar+219%2C46+mg+GAE%2Fg+dan+kadar%0D%0Atotal+flavonoid+261%2C93+mg+QE%2Fg%2C+serta+menghasilkan+diameter+zona+hambat%0D%0Atertinggi+terhadap+bakteri+Staphylococcus+aureus+sebesar+11%2C1+mm+dan+terhadap%0D%0Abakteri+Escherichia+coli+sebesar+9%2C5+mm+pada+konsentrasi+1000+ppm.%0D%0ASimpulan%3A+Daun+kopi+robusta+memiliki+aktivitas+antioksidan+yang+sangat+kuat%0D%0Adengan+kadar+total+fenolik+dan+flavonoid+yang+tinggi+serta+memiliki+kemampuan%0D%0Ayang+baik+dalam+menghambat+pertumbuhan+bakteri+Staphylococcus+aureus+dan%0D%0AEscherichia+coli.%0D%0AKata+kunci%3A+Daun+kopi+robusta%2C+sonikasi%2C+total+fenolik%2C+total+flavonoid%2C%0D%0Aantioksidan%2C+antibakteri%2C+Staphylococcus+aureus%2C+Escherichia+coli%0D%0A%0D%0A%0D%0ABackground%3A+Coffee+plants+usually+have+their+leaves+pruned+to+avoid+complicating%0D%0Aharvesting+and+to+encourage+flowering+and+increase+fruiting.+Coffee+leaves+resulting%0D%0Afrom+pruning+are+usually+just+thrown+away+so+they+need+further+utilization%2C+where%0D%0Acoffee+leaves+have+the+potential+as+a+therapeutic+agent+in+traditional+medicine+and%0D%0Ahave+the+potential+to+have+antioxidant+and+antibacterial+activity+due+to+their+high%0D%0Aphenol+content.+This+research+aims+to+determine+the+antioxidant+and+antibacterial%0D%0Aactivity+contained+in+robusta+coffee+leaves.%0D%0AMethod%3A+This+research+is+a+laboratory+scale+experimental+research.+Extraction+was%0D%0A%0D%0Acarried+out+using+the+sonication+method%2C+measuring+total+phenolics+using+the+Folin-%0D%0ACiocalteu+method+and+measuring+total+flavonoids+using+the+colorimetric+method.%0D%0A%0D%0AAntioxidant+activity+test+using+the+DPPH+method+and+antibacterial+activity+test%0D%0Ausing+the+cylinder+diffusion+method.%0D%0AResults%3A+Robusta+coffee+leaf+extract+has+very+strong+antioxidant+activity+with+an%0D%0AIC50+value+of+34%2C26+ppm%2C+a+total+phenolic+content+value+of+219%2C46+mg+GAE%2Fg+and+a%0D%0Atotal+flavonoid+content+of+261%2C93+mg+QE%2Fg%2C+and+produces+the+highest+inhibitory+zone%0D%0Adiameter+against+Staphylococcus+aureus+bacteria+was+11%2C1+mm+and+against%0D%0AEscherichia+coli+bacteria+was+9%2C5+mm+at+a+concentration+of+1000+ppm.%0D%0AConclusion%3A+Robusta+coffee+leaves+have+very+strong+antioxidant+activity+with+high%0D%0Alevels+of+total+phenolics+and+flavonoids+and+have+a+good+ability+to+inhibit+the+growth%0D%0Aof+Staphylococcus+aureus+and+Escherichia+coli+bacteria.%0D%0AKeywords%3A+Robusta+coffee+leaves%2C+sonication%2C+total+phenolics%2C+total+flavonoids%2C%0D%0Aantioxidants%2C+antibacterial%2C+Staphylococcus+aureus%2C+Escherichia+coli&rft.publisher=FAKULTAS+KEDOKTERAN&rft.date=2024-04-01&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F82347%2F1%2FABSTRAK%2520-%2520jesica%2520virginia.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F82347%2F2%2FSKRIPSI%2520FULL%2520-%2520jesica%2520virginia.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F82347%2F3%2FSKRIPSI%2520TANPA%2520PEMBAHASAN%2520%25282%2529%2520-%2520jesica%2520virginia.pdf&rft.identifier=++Jesica+%2C+Virginia+++(2024)+AKTIVITAS+ANTIOKSIDAN+DAN+ANTIBAKTERI+EKSTRAK+ETANOL+DAUN+KOPI+ROBUSTA+LAMPUNG+BARAT+(Coffee+canephora)+DENGAN+METODE+ULTRASONIC+ASSISTED+EXTRACTION.++FAKULTAS+KEDOKTERAN%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F82347%2F