Rambai laut (Sonneratia caseolaris L. Engl) is one of the typical plants of Borneo that the leaves are empirically used by the community as a medicinal plant. Compounds from plants can be obtained by extraction. The yield rendement on the extraction process can be influenced by several factors, one of which is the method of extraction. This study aims to determine the effect of extraction methods and the amount of yield produced on rambai laut extracts. The research design is experimental with descriptive analysis. Rambai laut which has become powder then in extraction by using maseration method, infundation method, reflux method and soxhletasi method. The result of rendement is then analyzed using statistic. Soxhletasi method yield average value of rendemen that is equal to 28,38%, reflux equal to 25,57%, maseration equal to 21,28% and infundasi with average value of rendemen that is equal to 17,20%. The soxhletation method yields the highest average yield value and infundation with the lowest average yield value. The result of staitistic test shows that the extraction method has an effect on each rendement with p value = 0,024 <α = 0,05.
Introduction: Faloak is one of the medicinal plants which grows wildly in Kupang-East Nusa Tenggara. People use faloak bark to treat several diseases. The faloak bark is usually processed by boiling and, the cooking water is drunk. Scientifically, faloak bark contains flavonoids which are known to have antioxidant properties. Preparation of faloak in other dosage forms is made so that people have other choices in using faloak. Faloak in the form of instant dosage has been made and has been measured for its antioxidant activity but has very weak antioxidant activity with an IC 50 value of 2,307.77 ppm ± 58.20 ppm or 2,249.57 ppm to 2,365.97 ppm (Soeharto & Tenda, 2018). Ginger is a plant that is known to have antioxidant activity. Objective: This study aimed to determine the antioxidant strength of instant faloak by adding ginger based on IC 50 value and the quality of the preparation. The sample is taken by taking the faloak bark that is not too old. The bark that has been extracted from the juice is then added with sugar and ginger juice and then recrystallized to get instant faloak with a ginger flavor. The instant faloak was identified qualitatively and measured its antioxidant activity against DPPH as a free radical at a wavelength of 517.4 nm using a UV-vis spectrophotometer. The quality of instant faloak preparations is measured including: water content and ash content. Results: The results showed that instant faloak wich added ginger had very weak antioxidant activity with values of IC 50 2,044.2 ppm ± 32.84 or 2,011.42 ppm to 2,077.1 ppm, water content of 2.40% and ash content of 1.46%.
Indonesian is still very dependent of soybean imports, so as to reduce the use of soybean need to find substitute materials in the manufacture of soybean. Corn can be an option because apart from being a source of carbohydrates, corn is also an important source of protein in the menu society in Indonesia. The purpose of this study to determine the levels of soybean protein maize (Zea mays) with a combination of soybean (Glycine max (L.) Merrill) with visible of spectrophotometry. The research design uses a comparison of corn: soybean as follows: P1 = 80: 20; P2 = 70: 30; P3 = 50: 50; P4 = 30: 70 and P5 = 20: 80. The results of this study indicate that P1 has a protein content of 6.7%, P2 = 8.06% = 10.76% P3, P4 and P5 = 13.46% = 14.8%. The greater the concentration ratio of soy protein obtained even greater. In organoleptic quality in soybean corn combination has the texture a little hard to hard, has no smell until the typical aroma smelled soybean, flat white to brown of white
Bawang dayak (Eleutherine palmifolia (L). Merr.) adalah salah satu jenis tumbuhan yang berkhasiat sebagai obat. Salah satu senyawa yang cukup banyak pada ekstrak etanol bawang dayak adalah flavonoid, sehingga dapat dilakukan pemisahan senyawa flavonoid dengan metode purifikasi. Penelitian ini bertujuan untuk mengetahui kadar flavonoid ekstrak terpurifikasi umbi bawang dayak dengan beberapa cara pengeringan secara spektrofotometri UV-Vis dan untuk mengetahui cara pengeringan yang menghasilkan kadar flavonoid paling tinggi. Cara pengeringan simplisia umbi bawang dayak adalah dengan sinar matahari langsung selama 6 jam (P1), pengeringan menggunakan oven dengan suhu ± 60ºC selama 6 jam (P2), pengeringan dengan cara ditutup dengan kain hitam (P3). Ekstrak terpurifikasi dibuat dengan mengekstraksi serbuk simplisia umbi bawang dayak dengan metode maserasi menggunakan etanol 70%, kemudian dilakukan purifikasi bertahap dengan menggunakan pelarut n-heksan. Uji kadar flavonoid ekstrak terpurifikasi umbi bawang dayak dilakukan dengan menggunakan metode spektrofotometri UV-Vis. Hasil yang diperoleh dari data spektrofotometri UV-Vis adalah kadar flavonoid ekstrak terpurifikasi umbi bawang dayak pada pengeringan sinar matahari (P1) 0,79%, pengeringan oven dengan suhu ± 60 0 C (P2) 1,57% dan pengeringan ditutup dengan kain hitam (P3) 1,02%. Tes LSD menunjukkan (P<0,05) ada perbedaan yang signifikan pada kadar flavonoid dengan perbedaan cara pengeringan.
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