?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=STUDI+PENGGUNAAN+METODE+ANALISIS+BERBASIS+%0D%0AUV-Vis+SPECTROSCOPY+DAN+METODE+REGRESI+PLS+UNTUK+PENENTUAN+KONSENTRASI+KOPI+CAMPURAN+LANANG-BIASA+%0D%0A(PEABERRY+DAN+NORMAL)%0D%0A%0D%0A&rft.creator=+RIYAN+WAHYUDI%2C++1314071048&rft.subject=Budidaya+tanaman&rft.description=Karena+kelangkaan+dan+kerumitan+penyortiran%2C+membuat+kopi+lanang+mahal+harganya.+meskipun+demikian+namun+permintaan+kopi+lanang+terus+meningkat.++Tidak+jarang+produsen+yang++memalsukan+atau+mencampur+kopi+lanang+ini+dengan+kopi+biasa+dengan+kualitas+rendah+untuk+memenuhi+permintaan+konsumen.++Pencampuran+kopi+lanang+dan+kopi+biasa+bisa+terjadi+pada+bentuk+biji+dan+bubuk.+Biji+kopi+lanang+dan+kopi+biasa+sebelum+dan+sesudah+disangrai+dapat+dibedakan+karena+bentuknya+yang+berbeda.++Kopi+lanang+bentuknya+bulat%2C+sedangkan+kopi+biasa+berbentuk+oval.++Namun+di+pasaran+kopi+lanang+banyak+dijual+dalam+bentuk+kopi+bubuk.++Pencampuran+kopi+lanang+dan+kopi+biasa+dalam+bentuk+bubuk+sulit+dibedakan+dengan+mata%2C+karena+informasi+bentuknya+telah+hilang.+Untuk+itu+pada+penelitian+ini%2C+UV-Vis+spectroscopy+digunakan+untuk+mendeteksi+adanya+pencampuran+pada+kopi+bubuk+lanang.+%0D%0ABahan+yang+digunakan+adalah+kopi+lanang+murni+100%25%2C+dan+kopi+campuran+lanang-biasa+dengan+komposisi+lanang+%3A+biasa+%3D+10%25+%3A+90%25%2C+20%25+%3A+80%25%2C+30%25+%3A+70%25%2C+40%25+%3A+60%25%2C+50%25+%3A+50%25%2C+60%25+%3A+40%25%2C+70%25+%3A+30%25%2C+80%25+%3A+20%25%2C+90%25+%3A+10%25%2C+95%25+%3A+5%25.++Pada+penelitian+ini+model+kalibrasi+dan+validasi+dibangun+menggunakan+metode+partial+least+squares+(PLS)+regresi+dengan+program+The+Unscrambler+versi+9.2.++Kemudian+untuk+melakukan+uji+taraf+kepercayaan+dari+model+yang+dibangun+uji+paired+t-test+menggunakan+perangkat+lunak+SPSS.%0D%0AHasil+penelitian+menunjukan+persamaan+kalibrasi+terbaik+dihasilkan+untuk+tipe+spektra+Savitzky+Golay+first+derivative+pada+panjang+gelombang+190-300+nm.++Persamaan+ini+memiliki+nilai+koefisien+determinasi+yaitu+R2kal+%3D+0%2C99%2C++Nilai+RPD+kal+%3D+10%2C68+dan+faktor+(F)+%3D+3%2C+nilai+SEC+%3D+2%2C564697%25+dan+SECV+%3D+2%2C753615%25%2C+dengan+selisih+SEC+dan+SECV+yang+rendah+yaitu+0%2C188918%25.++Dan+hasil+prediksi+memiliki+nilai+R2pred+%3D+0%2C99%2C+nilai+RPDpred+%3D+11%2C94%2C+SEP+%3D+2%2C472629%25%2C+dan+bias+%3D+0%2C396732%25.++Dengan+uji+paired+t-test+pada+taraf+kepercayaan+95%25+dapat+dibuktikan+bahwa+kandungan+kopi+lanang+aktual+dan+prediksi+tidak+berbeda+nyata.++Dengan+demikian+penentuan+konsentrasi+kopi+lanang+dalam+kopi+campuran+lanang-biasa+menggunakan+metode+analisis+berbasis+UV-Vis+spectroscopy+dapat+terbangun+dengan+baik.%0D%0A%0D%0AKata+Kunci+%3A+Kopi+lanang%2C+Kopi+robusta%2C+Regresi+PLS%2C+Uji+keaslian%2C+UV-Vis+spectroscopy.%0D%0A+%0D%0A%0D%0AABSTRACT%0D%0A%0D%0A%0D%0ADue+to+the+scarcity+and+complexity+of+sorting%2C+the+price+of+peaberry+coffee+is+expensive.++However%2C+the+demand+for+peaberry+coffee+is+increasing.++It+is+frequently+to+be+adulterated+with+ordinary+coffee+with+low+quality+to+meet+consumer+demand.++Blends+of+peaberry+coffee+and+normal+coffee+can+occur+in+the+form+of+coffee+bean+and+coffee+powder.++In+the+form+of+coffee+beans%2C+peaberry+and+normal+coffee+before+and+after+roasted+can+be+well+distinguished+because+of+the+different+in+shapes.++Peaberry+coffee+is+round%2C+while+the+normal+coffee+is+oval.+++However+in+the+trading%2C+peaberry+coffee+frequently+sold+in+the+form+of+coffee+powder.++Blends+of++peaberry+coffee+and+normal+coffee+in+powder+form+is+difficult+to+be+distinguished+using+human+eyes.++Then+the+information+of+shape+has+been+lost.++There+for%2C+in+this+study%2C+UV-Vis+spectroscopy+is+used+to+detect+the+presence+of+adulteration+in+peaberry+coffee+powder.%0D%0AThe+composition+samples+used+in+are+100%25+pure+peaberry+coffee%2C+and+blend-peaberry+coffee+with+composition+peaberry+%3A+normal+%3D+10%25%3A+90%25%2C+20%25%3A+80%25%2C+30%25%3A+70%25%2C+40%25%3A+60%25%2C+50%25%3A+50+%25%2C+60%25%3A+40%25%2C+70%25%3A+30%25%2C+80%25%3A+20%25%2C+90%25%3A+10%25%2C+and+95%25%3A+5%25.++In+this+research%2C+calibration+and+validation+model+was+built+using+partial+least+squares+(PLS)+regression+method+with+The+Unscrambler+version+9.2+program.++Then+to+test+the+degree+of+confidence+of+the+developed+model%2C+a+student+paired+t-test+was+using+performed+SPSS+software.++%0D%0AThe+results+show+that+the+best+calibration+models+was+obtained+for+Savitzky+Golay+first+derivative+spectra+at+wavelengths+of+190-300+nm.++This+model+has+coefficient+of+determination+(R2cal)+%3D+0%2C99%2C+RPDcal+%3D+10%2C68+and+factor+(F)+%3D+3%2C+SEC+%3D+2%2C564697%25+and+SECV+%3D+2%2C753615%25%2C+with+low+SEC+and+SECV+difference+%3D+0%2C188918%25.++The+predicted+result+has+value+R2pred+%3D+0%2C99%2C+RPDpred%3D+11%2C94%2C+SEP+%3D+2%2C472629%25%2C+and+bias+%3D+0%2C396732%25.++With+paired+t-test+test+at+95%25+confidence+level+can+be+proven+that+actual+peaberry+coffee+content+and+prediction+in+blend+are+not+significantly+different.++Thus%2C+the+determination+of+peaberry+coffee+concentration+in+a+blends-peaberry+coffee+based+on++UV-Vis+spectroscopy+can+be+well+established.%0D%0A%0D%0AKeywords%3A+Peaberry+coffee%2C+Robusta+cofee%2C+PLS+regression%2C+Test+of+authenticity%2C+UV-Vis+spectroscopy.%0D%0A%0D%0A%E2%80%83%0D%0A&rft.publisher=FAKULTAS+PERTANIAN+&rft.date=2018-01-12&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F30418%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F30418%2F20%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F30418%2F21%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=+++RIYAN+WAHYUDI%2C+1314071048++(2018)+STUDI+PENGGUNAAN+METODE+ANALISIS+BERBASIS+UV-Vis+SPECTROSCOPY+DAN+METODE+REGRESI+PLS+UNTUK+PENENTUAN+KONSENTRASI+KOPI+CAMPURAN+LANANG-BIASA+(PEABERRY+DAN+NORMAL).++FAKULTAS+PERTANIAN+%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F30418%2F