?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PEMBUATAN+MIKROSELULOSA+DARI+RESIDU+ONGGOK+FRAKSI%0D%0AAMILUM+TERHIDROLISIS+%0D%0A&rft.creator=AISYAH+TRI+SETYANINGSIH%2C+1717011050&rft.subject=540+Kimia+dan+ilmu+yang+berhubungan&rft.description=%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A+%0D%0AABSTRAK%0D%0A%0D%0A+%0D%0A%0D%0A+%0D%0AOnggok+merupakan+limbah+padat+singkong+yang+dihasilkan+dari+industri+tapioka%0D%0Adengan+keberadaan+yang+berlimpah.+Onggok+memiliki+kandungan+serat+kasar%0D%0Aberupa+selulosa+59%2C9%25%2C+hemiselulosa+20%25%2C+dan+lignin+10%2C7%25.+Kandungan+selulosa%0D%0Apada+onggok+sangat+berpotensi+untuk+digunakan+dalam+pembuatan+mikroselulosa.%0D%0AMikroselulosa+merupakan+material+yang+berasal+dari+selulosa+dengan+peningkatan%0D%0Abeberapa+aspek+seperti+kristalinitas%2C+luas+permukaan%2C+dan+stabilitas+termal.%0D%0APenelitian+ini+bertujuan+untuk+memperoleh+selulosa+dari+limbah+onggok+dengan%0D%0Afraksi+amilum+terhidrolisis+untuk+selanjutnya+akan+diubah+menjadi+mikroselulosa%0D%0Amenggunakan+metode+mekanik+dengan+ultrasonikasi.+Metode+penelitian+meliputi%0D%0Aproses+isolasi+bakteri+indigen+amilolitik%2C+penentuan+kurva+pertumbuhan+sel%2C%0D%0Apenentuan+konsentrasi+substrat%2C+hidrolisis+amilum%2C+pembuatan+mikroselulosa%2C+dan%0D%0Akarakterisasi+mikroselulosa+menggunakan+Scanning+Electron+Microscope+(SEM)%0D%0Adan+Particle+Size+Analyzer+(PSA).+Hasil+penelitian+menunjukkan+bahwa+isolat%0D%0Abakteri+dengan+kode+SCWB-19+memiliki+indeks+amilolitik+sebesar+1%2C14+dengan%0D%0Awaktu+inkubasi+optimum+selama+48+jam+dan+konsentrasi+substrat+optimum+sebesar%0D%0A10%25.+Berdasarkan+hasil+pengukuran+PSA%2C+mikroselulosa+yang+melalui+proses%0D%0Aperlakuan+asam+memiliki+diameter+rata-rata+sebesar+1%2C256+%C2%B5m%2C+sedangkan%0D%0Amikroselulosa+tanpa+perlakuan+asam+memiliki+diameter+rata-rata+sebesar+1%2C360%0D%0A%C2%B5m.+Analisis+SEM+menunjukkan+adanya+efek+penghapusan+lignin+dan%0D%0Ahemiselulosa+pada+permukaan+sampel+yang+melalui+proses+perlakuan+asam.%0D%0AMikroselulosa+yang+dihasilkan+berpotensi+dalam+berbagai+bidang%2C+salah+satunya%0D%0Asebagai+bahan+baku+pembuatan+mikrokomposit+hidrogel.%0D%0A%0D%0A%0D%0AKata+kunci+%3A+bakteri+indigen+amilolitik%2C+mikroselulosa%2C+onggok.++%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A+%0D%0A+%0D%0A+%0D%0A%0D%0A%0D%0A+%0D%0AOnggok+is+a+solid+waste+of+cassava+produced+from+the+tapioca+industry+in%0D%0Aabundance.+Onggok+contains+crude+fiber+in+the+form+of+59.9%25+cellulose%2C+20%25%0D%0Ahemicellulose%2C+and+10.7%25+lignin.+The+cellulose+content+in+cassava+has+a+potential%0D%0Ato+be+used+in+the+manufacture+of+microcellulose.+Microcellulose+is+a+material%0D%0Aderived+from+cellulose+with+improved+several+aspects+such+as+crystallinity%2C+surface%0D%0Aarea%2C+and+thermal+stability.+The+aim+of+this+research+is+to+obtain+cellulose+from%0D%0Aonggok+waste+with+hydrolyzed+starch+fraction+which+will+be+converted+into%0D%0Amicrocellulose+using+mechanical+methods+with+ultrasonication.+The+steps+of+this%0D%0Aresearch+include+the+isolation+of+indigenous+amylolytic+bacteria%2C+determination+of%0D%0Acell+growth+curve%2C+determination+of+substrate+concentration%2C+starch+hydrolysis%2C%0D%0Amanufacture+of+microcellulose%2C+and+characterization+of+microcellulose+using%0D%0AScanning+Electron+Microscope+(SEM)+and+Particle+Size+Analyzer+(PSA).+The%0D%0Aresults+showed+that+the+bacterial+isolate+SCWB-19+had+an+amylolytic+index+of%0D%0A1.14+with+an+optimum+incubation+time+of+48+hours+and+an+optimum+substrate%0D%0Aconcentration+of+10%25.+Based+on+the+results+of+PSA+measurements%2C+microcellulose%0D%0Athrough+the+acid+treatment+process+had+an+average+diameter+of+1.256+%C2%B5m%2C+while%0D%0Amicrocellulose+without+acid+treatment+had+an+average+diameter+of+1.360+%C2%B5m.+SEM%0D%0Aanalysis+showed+the+effect+of+lignin+and+hemicellulose+removal+on+the+surface+of%0D%0Athe+samples+through+the+acid+treatment+process.+The+obtained+microcellulose+has%0D%0Apotential+in+various+fields%2C+including+as+a+raw+material+for+making%0D%0Amicrocomposites+hydrogel.%0D%0A%0D%0A%0D%0AKeywords%3A+cassava%2C+indigenous+amylolytic+bacteria%2C+microcellulose.+%0D%0A+&rft.publisher=FAKULTAS+MIPA&rft.date=2021&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F62004%2F1%2FABSTRAK%2520-%2520Aisyah%2520Tri%2520Setyaningsih.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F62004%2F2%2FSKRIPSI%2520FULL%2520-%2520Aisyah%2520Tri%2520Setyaningsih.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F62004%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN%2520-%2520Aisyah%2520Tri%2520Setyaningsih.pdf&rft.identifier=++AISYAH+TRI+SETYANINGSIH%2C+1717011050++(2021)+PEMBUATAN+MIKROSELULOSA+DARI+RESIDU+ONGGOK+FRAKSI+AMILUM+TERHIDROLISIS.++FAKULTAS+MIPA%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F62004%2F