Sweet success for bio-battery


An enzyme cascade strips electrons from glucose and turns it into electricity that could be used to power a mobile phone © NPG

Sugar is an excellent source of energy. Most living cells generate their energy from glucose by passing it down an enzymatic chain that converts it into different sugars. This enzymatic cascade provides the necessary energy to create an electrochemical gradient. This, in turn, can be used to power an enzyme that synthesises adenosine triphosphate (ATP) – the universal biological energy currency. However, extracting this energy from a sugar if you’re not a biological organism is tricky – short of combustion, which is impractical to power handheld electronics.

To fuel their battery the team used maltodextrin – a polymer made up of glucose subunits. They then created an entirely new synthetic enzymatic pathway to extract energy from the sugar. Using 13 different enzymes they were able to strip, on average, 24 electrons from a single glucose molecule, which can then be harnessed to power an electrical device.

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Catalysis Science and Technology Selects Hua’s paper as a “Hot Article”

Green Chemistry @ MUN

The RSC journal Catalysis Science and Technology has selected our paper on Cr-catalyzed CO2/epoxide copolymerization as a “Hot Article” for January. The paper describes work performed by Hua Chen during her M.Sc. studies with Dr. Kozak. Thank you Hua for your hard work on this paper and thanks to Louise Dawe, whose ninja-like crystallographic skills were vital to solving the structure of one of the catalysts discussed in the paper. Access to the article can be found here.


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Unani medicine

New Drug Approvals

Unani-tibb or Unani Medicine also spelled Yunani Medicine (/juːˈnɑːni/Yūnānī in ArabicHindustanipashto and Persian) is a form oftraditional medicine widely practiced by Muslims. It refers to a tradition of Graeco-Arabic medicine, which is based on the teachings of Greek physician Hippocrates, and Roman physician Galen, and developed into an elaborate medical System by Arab and Persian physicians, such asRhazes (al-Razi), Avicenna (Ibn Sena), Al-Zahrawi, and Ibn Nafis.

Unani medicine is based on the concept of the four humoursPhlegm (Balgham), Blood (Dam), Yellow bile (Ṣafrā’) and Black bile (Saudā’).

The word Unani or Yunani has its origins in the Greek word Ἰωνία (Iōnía) or Ἰωνίη (Iōníe), a place name given to a Greek populated coastal region…

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Top 10 Reasons Se/\… Is Good for You

From making you smarter to reducing cancer risk, boning does more than make you feel good.

January 19, 2014  |
 When news broke this week that sex actually makes us smarter, the collective Internet did a cartoon double-take. Sex is supposed to make us  lose our minds, not  grow them. Lust turns us into beasts, not rocket scientists, right?
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Oxindole as starting material in organic synthesis (13-8074LR)

Arkivoc 2013 Part (i): Special Issue ‘Reviews and Accounts’ [pp. 470-535]

Full Text: PDF (1,621K)

http://www.arkat-usa.org/get-file/48468/    ,,,,,,,,,,,,,,,,,,,,,,free access

Ghodsi Mohammadi Ziarani,a* Parisa Gholamzadeh,aNegar Lashgari,a,b and Parvin Hajiabbasia

a  Department_of_ChemistryAlzahra University, Vanak Square, P.O. Box 1993891176,
Tehran, Iran
b  School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455,
Tehran, Iran

This review highlights the advances in the use of oxindole as starting material in the synthesis of
various organic compounds and drugs. The reactions can be performed on different reactive sites of
oxindole which are the carbonyl group, C-3 site, nitrogen atom, and aromatic ring. In addition, the
roles of oxindole in one-pot and domino reactions are discussed.

Persian miniature depicting Timur‘s campaign in India

File:4758976353 tehran b.jpg
teheran at night
Ayatollah Khomeini returns to Iran after 14 years exile on…

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