?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=KLASIFIKASI+KOPI+ORGANIK+GHALKOFF+DENGAN+LAMA%0D%0AFERMENTASI+0%2C+2%2C+DAN+4+HARI+MENGGUNAKAN+UV-VISIBLE%0D%0A%0D%0ASPECTROSCOPY+DAN+METODE+SIMCA&rft.creator=Dimas+%2C+Sihanjaya&rft.subject=630+Pertanian+dan+teknologi+yang+berkaitan&rft.description=Kopi+termasuk+ke+dalam+salah+satu+produk+pertanian+pada+perkebunan%0D%0Ayang+berperanan+penting+dalam+perekonomian+Indonesia.+Pada+tahun+2011+ekspor%0D%0Akopi+mencapai+23%2C59+%25.+Proposisi+nilai+ekspor+kopi+yang+besar+mencerminkan%0D%0Abahwa+produk+kopi+layak+dijadikan+sebagai+salah+satu+komoditas+terpenting%0D%0AIndonesia.+Kopi+yang+akan+digunakan+pada+penelitian+ini+berasal+dari+PT.+Ghaly%0D%0ARoelies+Indonesia+yang+biasa+disebut+dengan+Kopi+Ghalkoff.+Kopi+Ghalkoff+yang%0D%0Adigunakan+pada+penelitian+ini+adalah+kopi+Ghalkoff+organik+yang+sudah+melalui%0D%0Aproses+fermentasi.+Fermentasi+sangat+berpengaruh+terhadap+kadar+kafein+dan+nilai%0D%0ApH+pada+kopi.+Nilai+pH+akan+semakin+menurun+apabila+proses+fermentasi+yang%0D%0Adilakukan+itu+semakin+lama.%0D%0ASampel+yang+digunakan+berjumlah+150+sampel+yaitu%2C+50+sampel+F0%2C+50%0D%0Asampel+F2%2C+dan+50+sampel+F4.+Sebelum+dilakukan+pengambilan+spektra%2C+beberapa%0D%0Ayang+harus+dilakukan+yaitu+penimbangan+sampel%2C+masing+masing+sampel%0D%0Aditimbang+dengan+berat+1+gram.+Kemudian+ekstraksi+kopi%2C+pengenceran+kopi%0D%0Adengan+aquades+dengan+menggunakan+perbandingan+1+%3A+50%2C+pengadukan%2C%0D%0Akemudian+dilakukan+pengambilan+spektra+menggunakan+UV-Vis+spektroskopi%0D%0Atipe+benchtop+dan+membuat+model+serta+mengujinya+dengan+metode+PCA+dan%0D%0ASIMCA.+Hasil+pengujian+PCA+menggunakan+data+original+diperoleh+jumlah+nilai%0D%0APC+kumulatif+pada+F0+sebesar+98%25%2C+nilai+PC+kumulatif+pada+F2+sebesar+98%25%2Cdan%0D%0Anilai+PC+kumulatif+pada+F4+sebesar+99%25.+Hasil+akurasi+data+original+pada+model%0D%0ASIMCA+F0+%2B+F2%2C+F0%2BF4%2C+dan+F2+%2BF4+diperoleh+jumlah+nilai+sebesar+100%25%2C+hasil%0D%0Asensitivitas+sebesar+100%25%2C+dan+hasil+spesifisitas+sebesar+100%25.+Hasil+PCA+terbaik%0D%0Adiperoleh+dengan+cara+perbaikan+spektra+menggunakan+pretreatment+smoothing%0D%0Amoving+average+5+segment+dengan+nilai+PC+kumulatif+pada+F0+sebesar+99%25%2C+PC%0D%0Akumulatif+pada+F2+sebesar+99%25%2C+dan+PC+kumulatif+pada+F4+sebesar+100%25.+Hasil%0D%0Aakurasi+pada+model+SIMCA+F0+%2B+F2%2C+F0%2BF4%2C+dan+F2+%2BF4+diperoleh+jumlah%0D%0Asebesar+100%25%2C+hasil+sensitivitas+sebesar+100%25%2C+dan+hasil+spesifisitas+sebesar%0D%0A100%25.+Kemudian%2C+hasil+nilai+absorbans%2C+akurasi%2C+sensitivitas+dan+spesifitas+model%0D%0ASIMCA+pada+sampel+kopi+F0%2C+F2%2C+dan+F4+dapat+digunakan+sebagai+acuan+atau%0D%0Arefrensi+untuk+melakukan+pengecekan+apabila+terdapat+pemalsuan+produk+yang%0D%0Amengatasnamakan+kopi+Ghalkoff+secara+ilegal+dan+juga+diharapkan+proses%0D%0Aklasifikasi+ini+dapat+dijadikan+sebagai+salah+satu+cara+untuk+menjaga+Quality%0D%0Acontrol+pada+produk+kopi+Ghalkoff.%0D%0AKata+kunci%3A+Klasifikasi%2C+Kopi+Ghalkoff%2C+Kopi+Fermentasi%2C+UV-Vis+spektroskopi%2C%0D%0APCA%2C+SIMCA.%0D%0ACoffee+is+one+of+the+agricultural+products+on+plantations+which+plays+an%0D%0Aimportant+role+in+the+Indonesian+economy.+In+2011+coffee+exports+reached%0D%0A23.59%25.+The+large+value+proposition+of+coffee+exports+reflects+that+coffee+products%0D%0Adeserve+to+be+one+of+Indonesia's+most+important+commodities.+The+coffee+that+will%0D%0Abe+used+in+this+research+comes+from+PT.+Ghaly+Roelies+Indonesia+which+is+usually%0D%0Acalled+Ghalkoff+Coffee.+The+Ghalkoff+coffee+used+in+this+research+is+organic%0D%0AGhalkoff+coffee+which+has+gone+through+a+fermentation+process.+Fermentation%0D%0Agreatly+influences+the+caffeine+content+and+pH+value+of+coffee.+The+Ph+value+will%0D%0Adecrease+the+longer+the+fermentation+process+is+carried+out.%0D%0AThe+samples+used+were+150+samples%2C+namely%2C+50+F0+samples%2C+50+coffee%0D%0Asamples+F2%2C+and+coffee+samples+F4.+Before+taking+the+spectra%2C+several+things+must%0D%0Abe+done%2C+namely+weighing+the+samples%2C+each+sample+is+weighed+with+a+weight+of+1%0D%0Agram.+Then+extract+the+coffee%2C+dilute+the+coffee+with+distilled+water+using+a+ratio+of1%3A50%2C+stir%2C+then+take+the+spectra+using+Benchtop+type+UV-Vis+spectroscopy+and%0D%0Amake+a+model+and+test+it+using+the+PCA+and+SIMCA+methods.+The+results+of+the%0D%0APCA+test+using+original+data+showed+that+the+cumulative+PC+value+at+F0+was+98%25%2C%0D%0Athe+cumulative+PC+value+at+F2+was+98%25%2C+and+the+cumulative+PC+value+at+F4+was%0D%0A99%25.+The+original+data+accuracy+results+for+the+SIMCA+F0+%2B+F2%2C+F0+%2B+F4%2C+and+F2%0D%0A%2B+F4+models+obtained+a+total+value+of+100%25%2C+a+sensitivity+result+of+100%25%2C+and+a%0D%0Aspecificity+result+of+100%25.+The+best+PCA+results+were+obtained+by+improving+the%0D%0Aspectra+using+5+segment+smoothing+moving+average+pretreatment+with+a%0D%0Acumulative+PC+value+at+F0+of+99%25%2C+cumulative+PC+at+F2+of+99%25%2C+and+cumulative%0D%0APC+at+F4+of+100%25.+The+original+data+accuracy+results+for+the+SIMCA+F0+%2B+F2%2C%0D%0AF0%2BF4%2C+and+F2+%2BF4+models+obtained+a+total+value+of+100%25%2C+a+sensitivity+result+of%0D%0A100%25%2C+and+a+specificity+result+of+100%25.+Then%2C+the+results+of+the+SIMCA+model%0D%0Aaccuracy%2C+sensitivity+and+specificity+on+F0%2C+F2+and+F4+coffee+samples+can+be+used%0D%0Aas+a+reference+or+reference+to+check+if+there+is+illegal+counterfeiting+of+products+in%0D%0Athe+name+of+Ghalkoff+coffee+and+it+is+also+hoped+that+this+classification+process%0D%0Acan+be+used+as+a+way+to+maintain+quality+control+on+Ghalkoff+coffee+products.%0D%0AKeywords%3A+Classification%2C+Ghalkoff%E2%80%99s+Coffee%2C+Fermented+Coffee%2C+UV-Vis%0D%0Aspectroscopy%2C+PCA%2C+SIMCA&rft.publisher=PERTANIAN&rft.date=2024-03-14&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F84330%2F1%2F3.%2520SKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN%2520-%2520Dimas%2520Sihanjaya.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F84330%2F2%2F2.%2520SKRIPSI%2520FULL%2520-%2520Dimas%2520Sihanjaya.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F84330%2F3%2F3.%2520SKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN%2520-%2520Dimas%2520Sihanjaya.pdf&rft.identifier=++Dimas+%2C+Sihanjaya++(2024)+KLASIFIKASI+KOPI+ORGANIK+GHALKOFF+DENGAN+LAMA+FERMENTASI+0%2C+2%2C+DAN+4+HARI+MENGGUNAKAN+UV-VISIBLE+SPECTROSCOPY+DAN+METODE+SIMCA.++PERTANIAN%2C+UNIVERSITAS+LAMPUNG+.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F84330%2F