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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Journey: Journal of English Language and Pedagogy
Aji, Bayu Prasetyo
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Computer Science & IT Education Engineering Languange, Linguistic, Communication & Media

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Optimasi Asam Sitrat Limbah Batang Pisang (Musa Paradisiaca L.) Dengan Metode Kultivasi Cair Prihastuti, Putri; Aji, Bayu Prasetyo; Fitriani, Dea Syifa; Maharani, Farikha; Hartati, Indah
Prosiding Sains Nasional dan Teknologi Vol 11, No 1 (2021): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 11 2021
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36499/psnst.v1i1.5370

Abstract

Asam sitrat merupakan salah satu produk kimia yang aman digunakan pada makanan oleh semua badan pengawasan makanan nasional maupun internasional. Asam sitrat dapat diproduksi melalui proses fermentasi mikroorganisme penghasil asam sitrat. Aspergillus niger merupakan salah satu mikroorganisme yang dapat digunakan pada proses produksi asam sitrat. Penelitian ini bertujuan membuat asam sitrat dari limbah batang pisang dengan variasi penambahan volume starter (10, 20, 30, 40, 50) mL dan lama waktu kultivasi cair (1, 2, 3, 4, 5) hari. Sumber karbon yang digunakan adalah hidrolisa cair hasil pretreatment limbah batang pisang, sedangkan sumber nitrogen yang digunakan adalah (NH4)2SO4. Analisis yang dilakukan mencakup perubahan pH, total asam, biomassa dan rendemen (yield) yang dihasilkan. Hasil penelitian ini menunjukkan bahwa asam sitrat paling banyak diproduksi pada penambahan volume starter 20 mL serta lama waktu fermentasi 5 hari dengan total asam 8,06 mg/ml, pH 2,8 dan rendemen 46%.
ENHANCING EFL LEARNERS’ SPEAKING SKILLS THROUGH THE AUDIO-LINGUAL METHOD Putra, Muhammad Ashari; Fridayanto, Didha; Aji, Bayu Prasetyo; Karim, Sayit Abdul; Sudiro, Suryo
Journey: Journal of English Language and Pedagogy Vol. 5 No. 1 (2022): Journey: Journal of English Language and Pedagogy
Publisher : UIBU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33503/journey.v5i1.514

Abstract

The teaching method is one of the contributing factors to successful English language learning. The appropriate use of a teaching method is one of the ways to enhance learners’ speaking skills. The present study aims at reviewing the use of the Audio-Lingual Method (ALM), one of the teaching methods to enhance EFL learners’ speaking skills. The present study employs library research to delineate the use of ALM to enhance learners' mastery of speaking skills. The data were obtained from documentation study and previous research findings and further analyzed qualitatively. Therefore, it reviews the brief of ALM, the purposes of ALM. Moreover, it scrutinizes the strategies used in ALM, the benefits of using and the implication of using ALM in classroom teaching. Finally, some important points on the use of ALM are highlighted in the conclusion part.
Co-Authors Farikha Maharani Fitriani, Dea Syifa Fridayanto, Didha Indah Hartati Prihastuti, Putri Putra, Muhammad Ashari Sayit Abdul Karim Suryo Sudiro