Margarin merupakan produk lemak setengah padat yang merupakan emulsi dengan tipe water in oil (w/o) yaitu fase air berada di dalam fase minyak, dengan persyaratan mengandung tidak kurang 80 persen lemak sisanya adalah air dan bahan aditif. Penelitian ini menggunakan lemak kakao dan minyak Virgin Coconut Oil (VCO) sebagai sumber lemak dan minyak sebagai bahan baku pembutan margarin. Pembuatan margarin menggunakan proses blending, yaitu menyatukan dua titik leleh lemak dan minyak yang berbeda sehingga titik leleh nya berada diantara keduanya. Margarin yang dihasilkan ini tidak memiliki warna seperti margarin komersil yang dijual dipasaran, karena tidak adanya penambahan pewarna dalam proses pembuatannya. Dalam penelitian ini pemberian warna alami pada margarin menggunakan bubuk angkak, sehingga warna margarin yang dihasilkan berwarna kemerahan. Hasil penelitian menunjukkan margarin dengan penambahan bubuk angkak tidak memberikan pengaruh terhadap sifat fisik dan kimia margarin yang dihasilkan. Margarin yang dihasilkan telah memenuhi standar SNI 01-3541-2002.
Cocoa fruit peel is one of the natural wastes that has not been widely used. Cocoa fruit peel is thought to have secondary metabolites that can kill bacteria. The purpose of this study is to determine the antibacterial properties of liquid cocoa peel smoke and, determining minimum inhibitory concentration as well as concentration growth of Escherichia coli and Staphylococcus aureus pathogenic bacteria. This research had been conducted in April to May 2019. Testing of antibacterial activity was Well method. The results of study showed that the liquid smoke of cocoa peel at 10% moisture content was able to inhibit the growth of E.coli and, S.aureus bacteria at the highest level compared to the liquid smoke of brown skin moisture content of 15%, 20% and 25%. The inhibitory zone value in Cocoa fruit peel liquid smoke with moisture content of 10% against E.coli bacteria was 25.1 mm, while S.aureus bacteria had an inhibition zone value of 32.6 mm. E.coli bacteria showed stronger resistance compared to S.aureus. This was indicated by the E.coli inhibition zone was smaller than the S. Aureus inhibition zone. The minimum inhibitory concentration and, the minimum kill concentration in a row were at concentrations of 3.125% and 12.5% for E.coli bacteria.
Sago hampas is waste from processing sago starch. Sago hampas is generally thrown away without any further treatment. Sago hampas contain nutrients that can be used as a substrate for fermentation of angkak. The study aims to determine the stability and toxicity of angkak pigment powder from sago hampas-rice flour substrate. The study used exploratory research design through experiments in the laboratory. This study used the UV-vis spectrophotometer method in observing the stability of the Angkak powder pigment and the brine shrimps method of angkak pigment powder toxicity test. The results showed that the level of solubility of angkak pigment powder will increase at higher temperatures. Stability of angkak pigment powder tends to decrease with longer heating, the higher of heating temperature and the longer of irradiation. Angkak pigment powder are more stable at neutral and alkaline pH compared with acidic pH. And it is not toxic to experimental animals with LC50 value of angkak pigment powder of 2,897.05 ppm. The conclusion of this study is that temperature affects the intensity of the angkak pigment. Angkak is unstable along with heating time, heating temperature and longer of irradiation.
Penelitian ini bertujuan untuk mengetahui mutu dan aktivitas antioksidan dari produk brownies panggang dari substitusi tepung terigu dengan tepung beras ungu. Rancangan Acak Lengkap (RAL) dengan perlakuan 6 taraf dan 3 kali ulangan digunakan sebagai rancangan penelitian. Perlakuan dalam penelitian ini adalah substitusi tepung terigu dengan tepung beras ungu, yaitu: A = 100 : 0, B = 80 : 20, C = 60 : 40, D = 40 : 60, E = 20 : 80 dan F = 0 : 100. Hasil memperlihatkan bahwa substitusi tepung terigu dengan tepung beras ungu memberikan pengaruh terhadap mutu yaitu : kadar air, abu, lemak, protein, serat pangan dan aktivitas antioksidan brownies panggang. Brownies panggang dengan perlakuan F (perbandingan tepung terigu : tepung beras ungu = 0 : 100) paling disukai oleh panelis berdasarkan uji organoleptik dan memenuhi syarat mutu dengan komposisi kadar air (2,60 %), kadar abu (0,72 %), kadar protein (7,09 %), kadar lemak (2,66 %), kadar serat pangan (10,09 %) dan aktivitas antioksidan (41,35 %).
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