eprintid: 21546 rev_number: 8 eprint_status: archive userid: 3858 dir: disk0/00/02/15/46 datestamp: 2023-04-01 13:35:36 lastmod: 2023-04-01 13:35:36 status_changed: 2023-04-01 13:35:36 type: thesis metadata_visibility: show creators_name: Hidayah, Lidia Nur creators_name: Wahyudi, Priyo creators_name: Rachmania, Rizky Arcinthya title: SKRINING POTENSI BAKTERI ENDOFIT RANTING KETAPANG (Terminalia catappa L.) SEBAGAI PENGHASIL ENZIM XILANASE DAN AMILASE ispublished: pub subjects: R subjects: RS divisions: 48201 abstract: Ranting ketapang (Terminalia catappa L.) mengandung pati dan xilan yang dapat diubah menjadi glukosa dan xilosa oleh suatu enzim yaitu, xilanase dan amilase. Xilanase dan amilase dapat diproduksi oleh bakteri endofit yang dapat ditemukan pada tanaman berkayu keras. Penelitian ini bertujuan untuk menskrining bakteri endofit ranting ketapang yang dapat menghasilkan enzim xilanase dan amilase tertinggi. Isolasi endofit dilakukan dengan menggunakan metode teknik tanam lansung pada medium nutrient agar (NA). Isolat yang diperoleh dikarakterisasi morfologinya secara makroskopis dan mikroskopis. Uji aktivitas enzim xilanase dan amilase secara kualitatif dilakukan dengan mengamati zona bening di sekitar koloni pada media. Isolat yang memiliki aktivitas enzim tertinggi kemudian dikultur dalam medium fermentasi cair. Uji aktivitas enzim amilase secara kuantitatif dilakukan dengan menggunakan metode asam dinitrosalisilat (DNS). Tiga isolat bakteri endofit diperoleh dari ranting ketapang, salah satunya isolat KP1 yang memiliki aktivitas enzim amilase tertinggi sebesar 8,5664 U/ml. Namun isolat tersebut tidak menunjukkan adanya aktivitas xilanase. Kata Kunci: Bakteri Endofit, Ranting Ketapang (Terminalia catappa L.), Xilanase, Amilase. date: 2021 date_type: completed full_text_status: public institution: Universitas Muhammadiyah Prof. DR. 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