Results 101 to 110 of about 8,408 (243)

ONE-STEP CONVERSION OF EUGENOL TO METHYL ISOEUGENOL USING MICROWAVE IRRADIATION IN SOLVENT-FREE CONDITIONS

open access: yesIndonesian Journal of Chemistry, 2010
A research on conversion of eugenol to methyl isoeugenol via one-step reaction with microwave irradiation has been carried out. Mixtures containing eugenol, sodium or potassium carbonate as solid support, with or without sodium or potassium hydroxide as ...
Marcellino Rudyanto, Lanny Hartanti
doaj   +1 more source

Fraksinasi dan Identifikasi Senyawa Volatil pada Asap Cair Tempurung Kelapa Hibrida [PDF]

open access: yes, 2010
Tempurung kelapa hibrida merupakan salah satu bahan baku potensial untuk asap cair karena mengandung lignin dan selulosa sebagaimana halnya pada tempurung kelapa lokal.
Darmadji, P. (Purnama)   +3 more
core  

Extraction of wood compounds by use of subcritical fluids [PDF]

open access: yes, 2003
A study of the extraction of oak wood compounds with subcritical water-ethanol mixtures as extractant, with an ethanol content between 0-60%, is reported.
Gonzalez-Rodriguez, Jose   +2 more
core   +1 more source

Potency of Medicinal Plants for Eradication of Avian Influenza : in Vitro Test on Vero Cells [PDF]

open access: yes, 2013
Some of medicinal plants indicate their potency as anti-viral such as Sambiloto (Andrographis paniculata Nees), Temu Ireng (Curcuma aeruginosa L.), Beluntas (Pluchea indica L.) Sirih Merah (Piper crocatum) and Adas (Foeniculum vulgare). Avian Influenza (
Bermawie, N. (Nurliani)   +1 more
core   +2 more sources

Potensi Pengembangan Minyak Daun Cengkih sebagai Komoditas Ekspor Maluku [PDF]

open access: yes, 2011
Minyak daun cengkih dihasilkan melalui penyulingan (distilasi uap) daun cengkih gugur. Potensi daun cengkih gugurdiperkirakan 2.368.043 t/tahun dari area tanam 455.393 ha dengan rendemen minyak 14%.
Bustaman, S. (Sjahrul)
core  

Bioactivity of Sweet Flag (Acorus Calamus Linnaeus) Essential Oils Against Spodoptera Litura Fabricius (Lepidoptera: Noctuidae) [PDF]

open access: yes, 2016
The study aims to determine the chemical compounds, toxicity, and antifeedant activity of sweet flag (Acorus calamus) essential oils against third instar larvae of Spodoptera litura.
Afandhi, A. (Aminudin)   +2 more
core   +2 more sources

Aplikasi Reaksi Katalisis Heterogen untuk Pembuatan Vanili Sintetik (3-Hidroksi 2-Metoksibenzaldehida) dari Eugenol (4-Allil-2-Metoksifenol) Minyak Cengkeh

open access: yesMakara Seri Sains, 2002
An Application of heterogenous catalysis reaction for synthesis of synthetic vanillin (3-hydroxy-2-methoxybenzaldehyde) from eugenol (4-allyl-2-methoxyphenol) of clove oil.
Henny Purwaningsih   +3 more
doaj  

Radical-scavenging Activity of Natural Methoxyphenols vs. Synthetic Ones using the Induction Period Method

open access: yesMolecules, 2007
The radical-scavenging activities of the synthetic antioxidants 2-allyl-4-X-phenol (X=NO2, Cl, Br, OCH3, COCH3, CH3, t-(CH3)3, C6H5) and 2,4-dimethoxyphenol, and the natural antioxidants eugenol and isoeugenol, were investigated using differential ...
Ichiro Yokoe   +5 more
doaj   +1 more source

Optimasi Ekstraksi Oleoresin Pala (Myristica Fragrans Houtt) Asal Maluku Utara Menggunakan Response Surface Methodology (RSM) [PDF]

open access: yes, 2012
Tujuan dari penelitian ini adalah untuk memperoleh kondisi ekstraksi yang optimum dengan melakukan optimasi suhu dan lama ekstraksi dan karakterisasi komponen kimia penyusun oleoresin pala (Myristica fragrans Houtt) Asal Maluku Utara. Oleoresin diekstrak
Assagaf, M. (Muhammad)   +3 more
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Estudos de cromatografia aplicados à arqueologia romana: apresentação de resultados preliminares [PDF]

open access: yes, 2014
Neste estudo apresentam-se os resultados das análises por cromatografia gasosa com espectrometria de massa acoplada (GC/MS) aos resíduos orgânicos presentes em contentores cerâmicos como ânforas, potes meleiros e colmeias.
Morais, Rui, Oliveira, César
core  

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