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All Journal Jurnal Teknik Industri Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences AGRIVITA, Journal of Agricultural Science Al-Kimia
Rurini Retnowati
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Agriculture, Biological Sciences & Forestry Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Environmental Science Industrial & Manufacturing Engineering

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 1 
Synthesis Of L-Menthyl Acetic by Esterification L-Menthol and Acetic Anhydride with Variation Of Time Novia Suryani; A Ghanaim Fasya; Rurini Retnowati; Akyunul Jannah
Al-Kimia Vol 8 No 1 (2020): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (693.862 KB) | DOI: 10.24252/al-kimia.v8i1.11965

Abstract

l-menthyl acetic is an ester with specific aroma that synthesized by reaction of l-menthol and acetic anhydride and useful in fragrance industry. This paper reports influenced variation of time reaction toward ester product and characteristics l- menthyl acetic based on TLC, FTIR, GC and GC-MS. Reaction using l-menthol, acetic anhydride and catalyst H­2­SO­4­ 98 % in diethyl eter solvent at temperature 60 °C with variation of time reaction (45, 60, 75, 90, 105 minutes). The result of research is variation of time influence product with highest yield 88,43 % for 90 minutes. Monitoring TLC achived R­f­ = 0,82; analysis by FTIR achived specific wave number ester 1736,96 cm-1; analysis by GC achived t­r­ = 14,82 minutes and analysis by GC-MS achived t­r­ = 16,13 minutes with base peak m/z = 95.
The Effort to Improve The Economic Value Of Patchouli Oil: The Controlled Esterification at Production of The Aroma Compounds Base on Patchouli Oil Rurini Retnowati; Bambang Poerwadi
Jurnal Teknik Industri Vol. 8 No. 1 (2007): Februari
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/JTIUMM.Vol8.No1.67-70

Abstract

Patchouli oil is an excellent of the Indonesian essential oil, because 45% of essential oil government-reserve is gained from it. Patchouli oil is commonly used in soap industrial, hair tonic, mouthwash, and high quality perfume. In the utilizing, patchouli oil is mixed with other essential oil, such as: clove oil, rose oil, and vetiver oil; since the fixative nature with flavor substance could chain the other essential oil. The fixative nature and the odor resistance come from the tertier alcohol substance, e.i.: patchoulic alcohol as its main component. Although it has long odor resistance, as an aroma substance, the odor of patchouli oil has less strong. As the base character of aroma substances determined by ester component compiler, so it is interesting to study the esterification reaction controlling the amount of ester product. In this research, patchouli oil was converted into the ester substance by esterification reaction using anhydride acid and ZnCl2 catalyst. The esterification was optimized to various concentration of ZnCl2 catalyst from 1–5% and to obtained the most preferred ester dan patchoulic alcohol ratio. Characterization of trade patchouli oil and the product of esterification were conducted based on determining the physical nature, such as: density and refraction index, and also the patchouli oil component's profile from chromatogram and mass spectrum resulted from GC and GC-MS analysis. To know most preferred ester and pachoulic alcohol ratio, using hedonic test with 25 panelists was conducted. The research resulted that the esterification reaction of patchouli oil using anhydride acid could be done by using ZnCl2 catalyst. Characterization result using GC indicated that the component's profile change under esterification condition; while characterization result using GC-MS showed the existence of patchoulic acetate substance. Variation of anhydride acid composition affected the ratio profile of patchoulic acetate and patchoulic alcohol. Hedonic test results showed that panelists'most preferred ratio of patchoulic acetate and patchoulic alcohol is 0.7934.
DETERMINATION OF UREA-HUMIC ACID DOSAGE OF VERTISOLS ON THE GROWTH AND PRODUCTION OF RICE Retno Suntari; Rurini Retnowati; Soemarno Soemarno; Mochammad Munir
AGRIVITA, Journal of Agricultural Science Vol 37, No 2 (2015): JUNE
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v37i2.505

Abstract

The main problem of the use of N fertilizer in paddy soil Vertisols is the low efficiency. Urea-humic acid applications at certain dosage are believed to increase rice growth and production. This study was aimed to examine the effect of urea and urea-humic acid to the amount and form of N-available, N uptake, plant growth, and the production of rice. Five dosage levels of urea-humic acid were applied for rice on Vertisols. Results of the research showed that the urea-humic acid fertilizer could increase the content of N-NH4+ soil at 28 days and N-NO3- soil at 42 days. The urea-humic acid could improve plant height, number of tillers, and total dry weight. The highest rice production is achieved by 100% humic acid-urea, especially on parameters of dry weight effectively harvested and effectively milled, with 5.56 tons and 4.61 tons per hectare respectively. Correlation between soil N-NO3- level with soil N-NH4+  level was significant at p = 0.05 (r = 0.871). Efficiency of urea-humic acid fertilizer at 100% recommended dosage (200 kg urea-humic acid) to the dry weight of  effectively harvested crop with dry weight of effectively milled crop was 22% compared to the recommended urea fertilizer (200 kg ha-1).
THE CURCUMIN CONTENT OF TEMULAWAK(Curcuma xanthorriza Roxb.) RHIZOME AS AFFECTED BY N, K AND MICRONUTRIENTS B, Fe, Zn Ellis Nihayati; Tatik Wardiyati; Rurini Retnowati; Soemarno Soemarno
AGRIVITA, Journal of Agricultural Science Vol 35, No 3 (2013)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v35i3.210

Abstract

A polybag experiment to study the influence of N, K, and micronutrients B, Fe, Zn and the curcumin content in temulawak was conducted in Malang from February – September 2012. Using RBD, 8 treatments (P1  Inseptisol, without fertilizer, P2  Inseptisol  300 urea kg.ha-1, P3  Inseptisol  200 KCl kg.ha-1, P4  Inseptisol  300 kg.ha-1and 200 kg.ha-1 urea and KCl, P5  Alfisol, without fertilizer, P6  Alfisol  300 urea kg.ha-1, P7  Alfisol  200 KCl kg.ha-1, P8  Alfisol  300 kg.ha-1 and 200 kg.ha-1 urea and KCl in 3 replications. The micronutrients in vitro applied RCD by 4 treatments (MS medium, MS without B, Fe and Zn) in 10 replications. The results of experiment showed that dry weight of rhizome per plant in Inseptisol and Alfisol is 30.98 and 9.75 g, content of curcumin 6 month after planting was 3.60 and 4.72%. The highest rhizome weight of 8 months after planting was a combination of N and K of Inseptisol (48.28) and Alfisol (35.75 g per plant).The highest content of curcumin 6 months after planting was on Alfisol (7.99%) and Inseptisol (6.7%) by 200 KCl kg.ha-1.The curcumin content in complete media was higher than that without B, Fe and Zn i.e. 6.26 compared with 1.86–2.39%. Keywords : temulawak (Curcuma xanthorriza Roxb. Synm. Curcuma javanica), N, K, B, Fe, Zn, curcumin content
The Curative Activity of Isolated Fraction from Spathodea campanulata Beauv Stem Bark on Rats Exposed to Benzopyrene Masruri Masruri; Mohamad Lutfillah; Ady Sumaryanto; Rurini Retnowati; Aulanni'am Aulanni'am
Journal of Tropical Life Science Vol. 4 No. 3 (2014)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.04.03.01

Abstract

This paper reports a screening results of the secondary metabolites composed in Spathodea campanulata Beauv stem bark, evaluate inhibiting activity of malondialdehyde (MDA) on rats cancer model exposed with benzopyrene, and the histology of its lung. The secondary metabolite of the stem bark fraction consisted of alkaloids, flavonoids-phenolic, terpenoid and steroid compounds. The isolated fraction contained of these metabolites significantly indicate bioactivity by reducting of malondialdehyde (MDA) level, and also histology appearance of the lung tissue prepared from the benzopyrene-exposed rat indicated a curative activity.
Co-Authors A Ghanaim Fasya Ady Sumaryanto Akyunul Jannah Aulanni'am Aulanni'am Bambang Poerwadi Ellis Nihayati Masruri Masruri Mochammad Munir Mohamad Lutfillah Novia Suryani Retno Suntari Soemarno Soemarno Tatik Wardiyati