Jurnal Ilmiah Mahasiswa STKIP PGRI Sumbar

Nama / NPM Nia Lionita Sari / 15010031
Program Studi Pendidikan Biologi
Pembimbing I Dra. Gustina Indriati
Pembimbing II Dr. Ruth Rize Paas Megahati
Tahun 2019

Abstrak :

The high demand and trade of protease enzymes is still dominated by thermostable bacteria. However, the bacteria produce protease enzymes that tolerate acidic pH are unknown. Biology teacher at SMAN 1 Sungai Limau cannot carry out bacteria isolation activities because there are not facilities and infrastructure available to carry out these activities. The aim of this research is to get acidophil bacteria isolates that produce enzymes and know the validity of learning resources on bacteri material.This research includes two stages. The first stages of this research is to know the ability of bacteria to produce enzymes by looking at the clear zone around the bacteria and measure the proteolytic index. The second stages of this research is to develop learning resources research results using four-D models until the develop stage. The results of this research are getting two bacteria isolates that produce protease enzymes.The results of the learning resources validity test obtained an average of 92,11% with very valid criteria. The conclusion of this research are that in Danau Biru Sawahlunto is getting two bacteria isolates that produce protease enzymes and the results of the validity of the learning resources are very valid. 

Keyword :

Danau Biru, Acidophil, Proteases, Source

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