Category Archives: Bahan Kuliah

MAPS database

MAPSIntroduction

MAPS database provides phytochemicals, activities , structural and test target information about medicinal plants with reference to original research papers, PubMed Cental Id and PubChem structures. This web resource enables user to search plants with different activities, plants possessing specfic activity against specific test target (i.e virus, fungi, bacteria etc…), download phytochemical structures in .mol format with reference and hyperlink to PubChem Id.

Activities

MAPS database provides user with more than 20 activities possessed by medicinal plants. Each activity is linked with plant information with its name (Scientific Name), test target on which it found to be effective and literature as a reference( PubMed Id, Title, Abstract, Authors and PubMed Central id if available). Baca lebih lanjut

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Filed under Bahan Kuliah, Metabolit Sekunder

2015 in review

Asisten statistik WordPress.com menyiapkan laporan tahunan 2015 untuk blog ini.

Berikut ini kutipannya:

Museum Louvre dikunjungi 8,5 juta orang setiap tahun. Blog ini telah dilihat sekitar 110.000 kali di 2015. Jika itu adalah pameran di Museum Louvre, dibutuhkan sekitar 5 hari bagi orang sebanyak itu untuk melihatnya.

Klik di sini untuk melihat laporan lengkap.

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2014 in review

Asisten statistik WordPress.com menyiapkan laporan tahunan 2014 untuk blog ini.

Berikut ini kutipannya:

Museum Louvre dikunjungi 8,5 juta orang setiap tahun. Blog ini telah dilihat sekitar 120.000 kali di 2014. Jika itu adalah pameran di Museum Louvre, dibutuhkan sekitar 5 hari bagi orang sebanyak itu untuk melihatnya.

Klik di sini untuk melihat laporan lengkap.

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2013 in review

The WordPress.com stats helper monkeys prepared a 2013 annual report for this blog.

Here’s an excerpt:

The Louvre Museum has 8.5 million visitors per year. This blog was viewed about 110,000 times in 2013. If it were an exhibit at the Louvre Museum, it would take about 5 days for that many people to see it.

Click here to see the complete report.

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Hybridization

Hybridisation

Click the link for animation : http://www.mhhe.com/physsci/chemistry/essentialchemistry/flash/hybrv18.swf

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How to Dilute a Stock Solution

A. Why dilute?
Here are two situations that arise repeatedly in molecular biology labs:
1. You have a stock solution of some compound,  let’s say an antibiotic, and you want to add the compound to growth medium, at a much smaller concentration than the stock solution.
2. You have a tube of very concentrated bacteria, perhaps a billion cells per milliliter. You want to put a few hundred of them on a petri plate, so that the colonies that arise will be easily distinguishable.
In both cases, the way out of the problem is to dilute the original solution. If you work in a lab, you need to know how to do this. Baca lebih lanjut

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Isolation and identification of antibacterial compound from diethyl ether extract of Plantago major L

Ahmad Najib,1 Gemini Alam2 and Musdalifah Halidin1

1Faculty of Pharmacy, Moslem Universty of Indonesia
2Faculty of Pharmacy, Hasanuddin University

Abstract:

Plantago major L is a plant of the Plantaginaceae family which has been investigated on diethyl ether extract generate active spot as an antibacterial. The aim of the investigation was to identify the antibacterial compound from diethyl ether extract of daun sendok. as much 500 gram material was extracted maceration method was obtained 50 gram methanol extract, continued by partition with diethyl ether obtained 19.5 gram dried extract, the extract diethyl ether which isolated by suction column chromatography obtained 3 fractions (F1, F2 and F3). The third fraction (F3) was isolated by column chromatography obtained 2 fractions (3-1 and 3-2). The 3-1 active fraction (inhibit the Escherichia coli) isolated by preparative-TLC obtained 2 compounds. Compound 1 was active, single spot and visualization with Lieberman-Buchard and vanillin-sulfate acid. It have a steroid compound.

Keywords: Plantago major L, antibacterial, diethyl ether extract.

Source : Pharmacognosy Journal, 2012; 4(31):59-62

 

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