@article{IPI1698810, title = "AKTIVITAS BAKTERI AMILOLITIK YANG DIISOLASI DARI SUMBER AIRPANAS SINGGAHAN, TUBANACTIVITY OF AMILOLYTIC BACTERIA ISOLATED FROM HOT SPRING OFSINGGAHAN, TUBAN", journal = "Unesa Journal of Chemistry", volume = "Vol 3, No 3 (2014): Volume 3, Number 3, 2014", pages = "", year = "2014", url = http://jurnalmahasiswa.unesa.ac.id/index.php/unesa-journal-of-chemistry/article/view/9801 author = "PRATAMI PUTRI, UNIQUE", abstract = "Abstrak. Penelitian ini bertujuan untuk mengetahui aktivitas ekstrak kasar amilase dan mengetahui spesiesisolat aktivitas amilase tertinggiyang telah diisolasi dari Sumber Air Panas Singgahan, Tuban. Berdasarkanpenelitian sebelumnya, diperoleh 51 isolat yang telah positif menghasilkan amilase ditunjukkan denganclear zone. Lima puluh satu isolat tersebut diuji aktivitasnya menggunakan metode Miller (1959) denganreagen 3,5-Dinitrocalycilic acid (DNS). Diperoleh hasil isolat ST-21 memiliki aktivitas amilase tertinggiyaitu sebesar 1,4413 U/mL. Berdasarkan uji morfologi dan fisiologi isolat ST-21 menunjukkan spesiesBacillus amylolifaciens.Kata kunci:bakteri amilolitik termofilik, pati, aktivitas amilaseAbstract. This research aims tofound out amylase crude extract activity and found out species of isolates thathave highest activityisolated from hot spring Singgahan, Tuban. Building on last research, obtained 51isolates that positive produced amylase based on clear zone. One and fifty isolates tested their activity usedMiller metode (1959) with 3,5-Dinitrocalycilic acid (DNS) reagent. Obatained that isolate ST-21 that havethe highest amylaseactivityis 1,4413 U/mL. Based on morphology and phisiology ST-21 isolate shownspeciesBacillus amylolifaciens.Keywords:amylolytic thermophilic bacteria, starch, amylase activity", }