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All Journal Sains Natural: Journal of Biology and Chemistry JFIOnline
Tisnadjaja, Djadjat
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Health Professions Medicine & Pharmacology

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PENGARUH SUHU DAN CAHAYA TERHADAP STABILITAS ANGKAK HASIL FERMENTASI Monascus purpureus 3090 PADA BERAS Indrawati, Teti; Tisnadjaja, Djadjat; Ismawatie, .
Jurnal Farmasi Indonesia Vol 5, No 2 (2010)
Publisher : Jurnal Farmasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35617/jfi.v5i2.42

Abstract

Red rice is the product of yeast Monascus purpureus grown on rice as a natural colorant but unstable. This research aims are to get the optimum of depository conditions for red yeast rice. This research was did by fermentating the yeast strain of Monascus purpureus 3090 on rice, later its product were characterised and tested its stability during 9 weeks at 6 depository conditions, that  is in   room ((24-27oC), 30oC, and  40oC temperature, hit by sunlight, lamp light and without light.The results exhibited that the red rice product were dust powder, red color, caramel smell, and water content 5,62 %. The water solution of 0,2% red rice had pH of 4,70 and 0,1093 color absorpstion, and in 70% ethanol solution had pH of 5,60 and 0,5348 color absorption at 523 nm.  Its stability didnâ??t influence by temperature, but influence by lamp light and sunlight. It was stable in depository without light, room temperature, 30oC and 40oC. ABSTRAK Angkak  merupakan pigmen berwarna kuning sampai merah hasil fermentasi beras (Oryza sativa) yang aman sebagai pewarna alami tetapi tidak stabil.  Penelitian ini bertujuan untuk mendapatkan kondisi penyimpanan angkak yang optimun. Penelitian dilakukan dengan cara beras difermentasi oleh kapang Monascus purpureus 3090, kemudian angkak yang dihasilkan  dikarakterisasi dan diuji stabilitasnya selama 9 minggu pada 6 kondisi penyimpanan, yaitu suhu kamar (24-27oC), 30oC, 40oC, terkena cahaya matahari, terkena cahaya lampu dan tanpa cahaya. Hasil penelitian menunjukkan bahwa angkak yang dihasilkan berupa serbuk halus, berwarna merah,  berbau karamel dan mengandung kadar air 5,62%. Larutan angkak 0,2 % dalam pelarut air suling memiliki pH 4,70 dan serapan warna 0,1093 pada λ 523 nm, dalam etanol 70% memiliki pH 5,60 dan serapan warna 0,5348 pada λ 523 nm. Stabilitasnya tidak dipengaruhi oleh suhu, tetapi dipengaruhi oleh cahaya lampu dan matahari. Angkak stabil pada penyimpanan tanpa cahaya, suhu kamar (24-27oC), 30oC dan 40oC selama 9 minggu.
Instant Granule Formulation Combining White Sweet Potato Leaves Extract (Ipomoea batatas (L.) Lam.) and Javanese Chili (Piper retrofractum Vahl) Irawan, Herman; Permata Sari, Indah; Tisnadjaja, Djadjat; Ekawati, Nurlaili; Hertati, Ai; Novianti, Ela; Masaenah, Eem
Sains Natural: Journal of Biology and Chemistry Vol. 14 No. 1 (2024): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v14i1.612

Abstract

Dengue haemorrhagic fever is a viral infection transmitted by the Aedes aegypti mosquito, which is one of the symptoms is thrombocytopenia. The extract from white sweet potato leaves is recognized for its potential to increase the number of platelet count. This research aimed to develop a formula for an instant granule combining white sweet potato leaves extract with Javanese chili extract meeting taste preferences and societal acceptability. The preparation of the extract was performed by maseration using 70% ethanol and then concentrated with a rotary evaporator. The result was a thick extract which was then dried in an oven at 50℃. The manufacture of instant granule formulations was conducted using wet granulation method. Various formulations were obtained by differentiated concentration of Javanese chili used in the formula (FI 1%, FII 2%, and FIII 3%). The instant granule formulation was evaluated by organoleptic assay and other essential parameters for instant granule, such as moisture content, flow rate, angle of repose, and particle size distribution. The FII 2% formulation emerged as the most acceptable with an average score of 2.17. Non-parametric analysis indicated no significant difference among the three formulas, as the obtained significant value (α) was ≥ 0.05, leading to the acceptance of the null hypothesis H0.
Co-Authors Ai Hertati, Ai Ekawati, Nurlaili Irawan, Herman Ismawatie, . Masaenah, Eem Novianti, Ela Permata Sari, Indah Teti Indrawati