Pembuatan Ekstrak Rhizophora mucronata Sebagai Bahan Baku Inhibitor Korosi Skala Lab dan Skala Aplikasi

Wajilan Wajilan; Andrian Fernandes; Arif Wahyudianto

doi:10.30588/jeemm.v5i1.777

Pembuatan Ekstrak Rhizophora mucronata Sebagai Bahan Baku Inhibitor Korosi Skala Lab dan Skala Aplikasi

Wajilan Wajilan⁽¹⁾, Andrian Fernandes^(2*), Arif Wahyudianto⁽³⁾,

(1) Politeknik Negeri Samarinda
(2) Babes Litbang Ekosistem Hutan Dipterokarpa
(3) Politeknik Negeri Samarinda
(*) Corresponding Author

Abstract

Pembuatan inhibitor dalam bentuk ekstrak pekat dari bahan organik pada skala lab telah banyak dilakukan, namun percobaan dalam skala aplikasi yang lebih besar jarang dilakukan. Bahan organik pembuatan ekstrak pekat dapat menggunakan daun bakau (Rhizopora mucronata) banyak ditemukan di daerah mangrove. Penelitian bertujuan untuk membandingkan proses pembuatan inhibitor berupa ekstrak pekat dari daun bakau skala lab dengan skala aplikasi yang lebih besar terkait waktu pemekatan, daya listrik yang digunakan, sifat fisik (berat jenis dan sifat warna), sifat fitokimia (alkaloid, flavonoid, saponin dan tannin) dari ekstrak pekat yang dihasilkan. Pada skala lab, 500 gram daun kering bakau, dilarutkan dalam 500 ml etanol 96%, setelah 2 hari filtrate disaring dan dipekatkan hingga menjadi 10 ml menggunakan rotary evaporator. Pada skala aplikasi 20 kali lebih besar dari skala lab dan proses pemekatan menggunakan kipas angin. Hasil penelitian menunjukkan bahwa proses pembuatan 10 ml ekstrak pekat skala lab menggunakan rotary evaporator memerlukan waktu 4 jam, dengan menghabiskan daya listrik sebesar 10,4 KWH. Ekstrak pekat memiliki berat jenis 0,958 dan sifat warna L* = 2,8, a* = 6,6 dan b* = 3,2. Sedangkan proses pembuatan 200 ml ekstrak pekat skala aplikasi yang lebih besar yang menggunakan kipas angin memerlukan waktu 72 jam, dengan menghabiskan daya listrik sebesar 3,6 KWH. Ekstrak pekat memiliki berat jenis 0,965 dan sifat warna L* = 6,8, a* = 17,4 dan b* = 8,8. Kedua cara ekstraksi memiliki komponen fitokimia yang sama, yaitu flavonoid, saponin dan tannin.

Keywords

inhibitor; ekstrak pekat; Rhizophora mucronata; skala lab; skala aplikasi

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DOI: https://doi.org/10.30588/jeemm.v5i1.777