Body scrub is a cosmetic product that contains slightly rough material that can remove dead skin cells. Natural ingredients such as Halimeda macroloba is potential to be used as scrub. H. macroloba deposits CaCO3 in the thallus which makes the texture of Halimeda flour is rougher than that of other flour so that it is potentially used as a scrub. The emulsion-forming agent for body scrub can use konjac flour. Konjac flour contains high glucomannan which can used as emulsifier. This study aimed to determine the characteristics of body scrub using H. macroloba and konjac flour. Formulation of body scrub in this study was carried out by mixing water base (propylene glycol, glycerine, aquadest) and oil base (cetyl alcohol, stearic acid, DEA, perfume) at temperatures of 70 °C and 80 °C. Afterwards the mixture was added with 3% of H. macroloba and 2% of konjac flour. Body scrub produced in this study contained moisture of 58.49-75.15%, viscosity 10 106.67-14 900.00 cP, pH 6.48-6.93, whiteness 67.74%-95.96%, and spread ability 1.63-2.17 cm. The highest macro mineral content was calcium (Ca) with an average of 8.24 mg g-1, while the highest micromineral was iron (Fe) with an average of 16.85 ppm. The most preferred formula for colour and aroma based on the result of hedonically assessment was formula 2 (fresh H. macroloba with chitosan 2%), while the most preferred for thickness and texture was formula 5 (dried H. macroloba with chitosan 2%).
Solusi masalah antibau kaki salah satunya yaitu penggunaan produk anti bau kaki. Salah satu bahan alami yang berpotensi sebagai agen anti bau kaki adalah kitosan. Kitosan apabila dalam bentuk nanopartikel lebih reaktif dan memiliki aktivitas antibakteri lebih tinggi. Limbah industri udang sampai saat ini belum banyak dieksplor, sehingga pemanfaatan limbah industri udang menjadi nano kitosan dapat meningkatkan nilai tambah limbah udang. Penelitian ini bertujuan menemukan formulasi foot spray terbaik dalam menghambat bakteri penyebab bau kaki. Tahapan penelitian ini yaitu pembuatan kitosan, nano kitosan, formulasi foot spray, uji sifat fisik, uji aktivitas antibakteri, uji stabilitas fisik, dan uji iritasi. Pembuatan nanokitosan menggunakan metode gelasi ionik. Kitosan dilarutkan dengan akuades, TPP 0,1%, dan Tween 80 serta disizing dengan kecepatan 23.000 rpm akan membentuk nanopartikel stabil. Konsentrasi nano kitosan 3.000 ppm memberi daya hambat tertinggi yakni 5,20 mm terhadap S. epidermidis dan 3,15 terhadap Micrococcus sp. Derajat keasaman, ukuran partikel, dan nilai sensori foot spray nano kitosan stabil selama penyimpanan 8 minggu, namun viskositasnya mengalami penurunan besar.
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