?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=IMOBILISASI+ENZIM+%CE%B1-AMILASE+DARI+Aspergillus+sp.%0D%0A%0D%0AMENGGUNAKAN+KITIN&rft.creator=Rusmauli+%2C+Defana+Panjaitan&rft.subject=500+ilmu+pengetahuan+alam+dan+matematika&rft.subject=540+Kimia+dan+ilmu+yang+berhubungan&rft.description=Enzim+%CE%B1-amilase+merupakan+enzim+yang+umum+digunakan+dalam+proses%0D%0Aindustri+kimia%2C+seperti+industri+makanan%2C+farmasi%2C+dan+tekstil.+Pada+proses+industri%0D%0Adibutuhkan+enzim+yang+stabil+yaitu+enzim+yang+mampu+bekerja+secara+optimum%0D%0Apada+suhu+dan+pH+yang+ekstrem%2C+namun+enzim+tidak+dapat+bekerja+secara%0D%0Aoptimum+pada+suhu+dan+pH+yang+ekstrem+sehingga+perlu+dilakukan+peningkatan%0D%0Akestabilan+enzim.%0D%0APenelitian+ini+bertujuan+untuk+meningkatkan+kestabilan+enzim+%CE%B1-amilase%0D%0Adari+Aspergillus+sp.+menggunakan+matriks+kitin.+Untuk+mencapai+tujuan+tersebut%2C%0D%0Amaka+enzim+%CE%B1-amilase+diproduksi%2C+diisolasi%2C+dimurnikan+dengan+metode+fraksinasi%0D%0Amenggunakan+amonium+sulfat+dan+dialisis.+Enzim+hasil+pemurnian+diimobilisasi%0D%0Amenggunakan+matriks+kitin%2C+selanjutnya+dilakukan+karakterisasi+terhadap+enzim%0D%0Ahasil+pemurnian+dan+enzim+hasil+imobilisasi.%0D%0AHasil+penelitian+ini+menunjukkan+bahwa+enzim+hasil+pemurnian+meningkat%0D%0Akemurniannya+sebesar+9+kali+lebih+tinggi+dari+ekstrak+kasar+enzim.+Uji+stabilitas%0D%0Atermal+pada+suhu+60%C2%B0C+selama+80+menit+pada+enzim+hasil+imobilisasi+memiliki%0D%0Aaktivitas+sisa+sebesar+49+%25+dan+waktu+paruh+sebesar+82%2C52+menit+sedangkan+enzim%0D%0Ahasil+pemurnian+sebesar+24+%25+dan+waktu+paruh+sebesar+42%2C27+menit.+Hasil+ini%0D%0Amenunjukkan+bahwa+enzim+yang+telah+diimobilisasi+mengalami+peningkatan%0D%0Akestabilan+sebesar+dua+kali+lipat+dibandingkan+enzim+hasil+pemurnian.+Pada%0D%0Apemakaian+berulang%2C+enzim+hasil+imobilisasi+masih+memiliki+aktivitas+sisa+sebesar%0D%0A47+%25+setelah+penggunaan+sebanyak+enam+kali.%0D%0AKata+kunci%3A+%CE%B1-amilase%2C+Aspergillus+sp.%2C+imobilisasi%2C+kitin.%0D%0A%0D%0A%0D%0AThe+%CE%B1-amylase+enzyme+is+an+enzyme+commonly+used+in+chemical%0D%0Aindustrial+processes%2C+such+as+the+food%2C+pharmaceutical%2C+and+textile+industries.+In%0D%0Aindustrial+processes%2C+stable+enzymes+are+needed%2C+namely+enzymes+that+can+work%0D%0Aoptimally+at+extreme+temperatures+and+pH%2C+but+enzymes+cannot+work+optimally+at%0D%0Aextreme+temperatures+and+pH%2C+so+it+is+necessary+to+increase+enzyme+stability.%0D%0AThis+research+aims+to+increase+the+stability+of+the+%CE%B1-amylase+enzyme+from%0D%0AAspergillus+sp.+using+a+chitin+matrix.+To+achieve+this+goal%2C+the+%CE%B1-amylase+enzyme%0D%0Awas+produced%2C+isolated%2C+purified+by+fractionation+method+using+ammonium+sulfate%0D%0Aand+dialysis.+The+purified+enzyme+was+immobilized+using+a+chitin+matrix%2C+then%0D%0Acharacterization+was+carried+out+on+the+purified+enzyme+and+the+immobilized%0D%0Aenzyme.%0D%0AThe+results+of+this+study+showed+that+the+purity+of+the+purified+enzyme%0D%0Aincreased+by+9+times+compared+to+the+crude+extract+of+the+enzyme.+Thermal%0D%0Astability+test+at+60%C2%B0C+for+80+minutes+showed+that+the+immobilized+enzyme+had+a%0D%0Aresidual+activity+of+49%25+and+a+half-life+of+82.52+minutes%2C+while+the+purified%0D%0Aenzyme+was+24%25+and+a+half-life+of+42.27+minutes.+These+results+show+that+the%0D%0Aimmobilized+enzyme+has+a+two-fold+increase+in+stability+compared+to+the+purified%0D%0Aenzyme.+With+repeated+use%2C+the+immobilized+enzyme+still+has+residual+activity+of%0D%0A47%25+after+six+uses.%0D%0AKeywords%3A+%CE%B1-amylase%2C+Aspergillus+sp.%2C+immobilization%2C+chitin.&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2024-08-08&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F82440%2F1%2FABSTRAK%2520-%2520rusmauli%2520rusmauli.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F82440%2F2%2FFull%2520Skripsi%2520Tanpa%2520Lampiran%2520-%2520rusmauli%2520rusmauli.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F82440%2F3%2FSkripsi%2520Tanpa%2520Pembahasan%2520-%2520rusmauli%2520rusmauli.pdf&rft.identifier=++Rusmauli+%2C+Defana+Panjaitan++(2024)+IMOBILISASI+ENZIM+%CE%B1-AMILASE+DARI+Aspergillus+sp.+MENGGUNAKAN+KITIN.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F82440%2F