?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=IDENTIFIKASI+KEASLIAN+KOPI+ROBUSTA+DEKAFEINASI+MENGGUNAKAN+TEKNOLOGI+UV-VIS+SPECTROSCOPY+DAN+KEMOMETRIKA&rft.creator=SOFYAN+SAMBUDI+%2C+1314071053&rft.subject=Budidaya+tanaman&rft.description=Banyak+peminat+kopi+yang+tidak+toleran+terhadap+kafein+yang+ada+dalam+kopi%2C+sehingga+jika+mengkonsumsi+kopi+maka+akan+mengakibatkan+keluhan+kesehatan.+Dengan+adanya+kopi+dekafeinasi+atau+kopi+rendah+kafein+maka+peminat+kopi+yang+tidak+toleran+terhadap+kafein+tetap+dapat+menikmati+kopi+tanpa+menyebabkan+keluhan+kesehatan.+Penelitian+ini+bertujuan+untuk+mengidentifikasi+keaslian+kopi+robusta+dekafeinasi+menggunakan+UV-Vis+Spectroscopy+dan+software+The+Unscrambler+versi+9.2+dengan+metode+soft+independent+modelling+of+class+analogy+(SIMCA).+Hipotesis+dari+penelitian+ini+adalah+model+SIMCA+yang+sudah+dibuat+dapat+mengklasifikasi+sampel+kopi+dekafeinasi+dan+kopi+nondekafeinasi+ke+dalam+kelasnya+masing-masing.%0D%0APengujian+dilakukan+pada+bubuk+kopi+berukuran+0%2C297+milimeter+(mesh+50)+dengan+berat+1+gram+pada+setiap+sampelnya.+Sampel+kopi+1+gram+diekstraksi%0D%0Aiii%0D%0Amenggunakan+air+distilasi+sebanyak+50+ml+dengan+suhu+90-98oC.+Kemudian+dihomogenisasi%2C+disaring+menggunakan+kertas+saring%2C+diencerkan+dengan+perbandingan+1+ml+sampel+ekstraksi+kopi+dengan+20+ml+air+distilasi%2C+dan+diambil+data+absorbansinya+menggunakan+UV-Vis+Spectroscopy+dan+didapatkan+data+berupa+data+absorbansi+pada+panjang+gelombang+190+%E2%80%93+1100+nm.%0D%0AHasil+klasifikasi+menunjukkan+bahwa+metode+PCA+dan+SIMCA+mampu+membedakan+kopi+robusta+nondekafeinasi+dan+kopi+robusta+dekafeinasi.+Hasil+analisis+PCA+pada+semua+data+dan+semua+panjang+gelombang+memberikan+informasi+bahwa+PC1+menunjukkan+nilai+keragaman+data+sebesar+59%25+dan+PC2+menunjukkan+nilai+keragaman+data+sebesar+25%25.+Sedangkan+untuk+klasifikasi+SIMCA+pada+panjang+gelombang+penuh+(190+%E2%80%93+1100+nm)+maupun+pada+beberapa+panjang+gelombang+terpilih+(190+%E2%80%93+700+nm%2C+190+%E2%80%93+600+nm%2C+190+%E2%80%93+500+nm%2C+dan+190+%E2%80%93+400+nm)+diperoleh+nilai+akurasi+(AC)+sebesar+100%25%2C+nilai+sensitivitas+(S)+sebesar+100%25%2C+nilai+spesifisitas+(SP)+sebesar+100%25%2C+dan+nilai+error+(FP)+sebesar+0%25.+Panjang+gelombang+dengan+interval+270+%E2%80%93+350+nm+memiliki+nilai+akurasi%2C+sensitivitas%2C+dan+spesifisitas+sebesar+100%25+dan+nilai+error+sebesar+0%25%2C+dengan+jumlah+variabel+paling+sedikit+pada+panjang+gelombang+270+%E2%80%93+350+nm+dapat+dipilih+untuk+identifikasi+keaslian+kopi+robusta+dekafeinasi.%0D%0AKata+kunci+%3A+kopi+robusta+dekafeinasi%2C+UV-Vis+spektroscopy%2C+the+unscrambler%2C+PCA%2C+SIMCA.%0D%0A%0D%0AABSTRACT%0D%0A%0D%0AMany+coffee+enthusiasts+are+not+tolerant+of+caffeine+in+coffee%2C+so+if+consuming+coffee+that+it+will+get+result+in+health+complaints.+The+decaffeination+coffee+or+low+caffeine+coffee+so+coffee+enthusiasts+which+are+not+tolerant+of+caffeine+so+they+can+still+enjoy+coffee+without+causing+health+complaints.+This+study+aims+to+identify+the+authenticity+of+robusta+dekafeinasi+coffee+using+UV-Vis+Spectroscopy+and+software+The+Unscrambler+version+9.2+with+soft+independent+modeling+of+class+analogy+(SIMCA)+method.+The+hypothesis+of+this+study+is+the+SIMCA+model+that+has+been+created+can+classify+the+samples+of+decaffeination+coffee+and+nondecaffeination+coffee+into+their+respective+classes.%0D%0AThe+test+was+performed+on+a+0%2C297+millimeter+(mesh+50)+coffee+powder+weighing+1+gram+in+each+sample.+The+1+gram+sample+of+coffee+was+extracted+using+distilled+water+as+much+as+50+ml+with+temperature+90+%E2%80%93+98oC.+Then+homogenized%2C+filtered%0D%0Av%0D%0Ausing+filter+paper%2C+dilution+with+a+ratio+of+1+ml+sample+of+coffee+extraction+with+20+ml+distilled+water%2C+and+taken+absorbansice+data+using+UV-Vis+Spectroscopy+and+obtained+data+in+the+form+of+absorbansice+data+at+wavelength+190+-+1100+nm.%0D%0AClassification+results+indicate+that+the+PCA+and+SIMCA+methods+are+able+to+distinguish+the+nondecaffeination+robusta+coffee+and+decaffeination+robusta+coffee.+PCA+analysis+results+in+all+data+and+all+wavelengths+provide+information+that+PC1+shows+a+datum+diversity+value+of+59%25+and+PC2+shows+a+datum+diversity+value+of+25%25.+As+for+the+classification+of+SIMCA+at+full+wavelength+(190+-+1100+nm)+and+at+selected+wavelengths+(190+-+700+nm%2C+190+-+600+nm%2C+190+-+500+nm%2C+and+190+-+400+nm)+accuracy+value+(AC)+%25%2C+sensitivity+value+(S)+is+100%25%2C+specificity+value+(SP)+is+100%25%2C+and+error+value+(FP)+is+0%25.+Wavelengths+with+intervals+of+270+-+350+nm+have+100%25+accuracy%2C+sensitivity%2C+and+specificity+value+and+an+error+value+of+0%25%2C+with+the+smallest+number+of+variables+at+wavelengths+270+-+350+nm+can+be+selected+to+identify+the+authenticity+of+decaffeination+robusta+coffee.%0D%0AKeywords%3A+decaffeination+robusta+coffee%2C+Uv-Vis+spectroscopy%2C+the+unscrambler%2C+PCA%2C+SIMCA.&rft.publisher=FAKULTAS+PERTANIAN+&rft.date=2018-01-30&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F30528%2F1%2FABSTRAK%2520%2528ABSTRACT%2529.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F30528%2F3%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F30528%2F2%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++SOFYAN+SAMBUDI+%2C+1314071053++(2018)+IDENTIFIKASI+KEASLIAN+KOPI+ROBUSTA+DEKAFEINASI+MENGGUNAKAN+TEKNOLOGI+UV-VIS+SPECTROSCOPY+DAN+KEMOMETRIKA.++FAKULTAS+PERTANIAN+%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F30528%2F