Abstract
The aim of study was to formulate solid soap made from Eucheuma cottonii seaweed which has antiseptic properties. This study used a Complate Randomized Design (CRD) with one factor adding extract<br />E. cottonii seaweed (0 ppm, 250 ppm, 500 ppm and 750 ppm). The steps included sample preparation, extraction, production of antiseptic soap, chemical physics test (moisture content, pH, free alkali, foam stability, and hardness) and antibacterial test. The results showed that the addition of E. cottonii seaweed extract had a significant effect on free alkali, foam stability, and soap hardness except the moisture content<br />and acidity (pH) of the soap. Moisture content of solid soap ranged 20.03-27.62%, pH 11.22-11.57, the free alkali value was 0.05-0.53%, foam stability was 42.77-74.42%, and hardness was in the range of 102.10-387.84%. Antibacterial activity test showed inhibitory diameter in E. cottonii extract soap ranged 11.08-17.15 mm, classified as a strong antibacterial activity (&gt; 11 mm), while the antibacterial inhibitory diameter of E. cottonii extract was 0–12.26 mm. The higher the concentration of seaweed extract E. cottonii, the higher the inhibition zone (antibacterial activity) of soap produced. The best treatment of antiseptic soap produced was seaweed extract with concentration of 750 ppm which had the highest inhibition zone against S. aureus compared to other treatments.
Highlights
The aim of study was to formulate solid soap made from Eucheuma cottonii seaweed which has antiseptic properties
The results showed that the addition of E. cottonii seaweed extract had a significant effect on free alkali, foam stability, and soap hardness except the moisture content and acidity of the soap
Moisture content of solid soap ranged 20.03-27.62%, pH 11.22-11.57, the free alkali value was 0.05-0.53%, foam stability was 42.77-74.42%, and hardness was in the range of 102.10 -387.84%
Summary
Ace Baehaki*, Shanti Dwita Lestari, Dica Fusva Hildianti Program Studi Teknologi Hasil Perikanan Fakultas Pertanian Universitas Sriwijaya Indralaya. Pemanfaatan rumput laut Eucheuma cottonii dalam pembuatan sabun antiseptik. Abstrak Penelitian ini bertujuan untuk mendapatkan formula sabun padat menggunakan bahan aktif rumput laut Eucheuma cottonii yang memiliki sifat antiseptik. Tahapan yang dilakukan pada penelitian ini meliputi preparasi sampel, ekstraksi sampel, pembuatan sabun antiseptik, uji fisika kimia (kadar air, pH, alkali bebas, stabilitas busa dan kekerasan) dan uji antibakteri. Hasil penelitian menunjukkan penambahan ekstrak rumput laut E. cottonii berpengaruh nyata terhadap alkali bebas, stabilitas busa dan kekerasan sabun kecuali kadar air dan derajat keasaman (pH) sabun. Kadar air sabun antiseptik dengan bahan dasar rumput laut adalah 20,03-27,62% dan pH 11,22-11,57, nilai alkali bebas 0,05-0,53%, stabilitas busa 42,77-74,42%, kekerasan 102,10-387,84%. Perlakuan terbaik dari sabun antiseptik adalah perlakuan ekstrak rumput laut dengan konsentrasi 750 ppm yang memiliki zona hambat terhadap bakteri S. aureus paling tinggi dibandingkan dengan perlakuan lainnya. The Utilization of Seaweed Eucheuma cottonii in the Production of Antiseptic Soap
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