Volume-5 , Issue-5 , Oct 2018, ISSN 2455-3174 (Online) Go Back

• Open Access   Article

  Oxidation of β-Cyclodextrin by Hexacyanoferrate(III) in Aqueous Alkaline Medium: a Kinetic and Mechanistic Study

  M.B. Bolattin, A.S. Kulkarni, N.M. Mulla, S.S. Badiger, M.S. Gurav, N.B. Banashetti

  Research Paper | Isroset-Journal (IJSRCS)

  Vol.5 , Issue.5 , pp.1-7, Oct-2018

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  Abstract
  The kinetics of redox reaction between β-cyclodextrin (β-CD) and hexacyanoferrate(III) has been studied spectrophotometrically in alkaline medium at 25oC and at an ionic strength of 1.10 mol dm–3. The order with respect to [Fe(CN)6]3- was found to be unity and order with respect to alkali and [β-CD] was found to be less than unity. Increasing alkali and ionic strength concentration accelerates the rate of the reaction. The reaction between β-CD and hexacyanoferrate(III) involves 1:2 stoichiometry. Oxidised products are confirmed by FT-IR and 1H-NMR spectral technique. The main reaction product is identified as (3S,4R,5S,6S)-4,5-dihydroxy-3,6-dimethoxy-tetrahydro-2H-pyran-2-carbaldehyde. Based on the experimental results a suitable mechanism is proposed and the rate law is derived. The reaction in alkaline medium proceeds through the formation of oxidant–reductant complex that decomposes slowly in a rate determining step followed by fast step to give the product. The activation parameters with respect to the slow step of the mechanism are calculated. The reaction constants involved in the mechanism have been computed. There is a good agreement between the experimental and calculated rate constants under different experimental conditions.

  Key-Words / Index Term
  Kinetics; Oxidation; β-cyclodextrin; Hexacyanoferrate(III); Mechanism

  References
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  Citation
  M.B. Bolattin, A.S. Kulkarni, N.M. Mulla, S.S. Badiger, M.S. Gurav, N.B. Banashetti, "Oxidation of β-Cyclodextrin by Hexacyanoferrate(III) in Aqueous Alkaline Medium: a Kinetic and Mechanistic Study," International Journal of Scientific Research in Chemical Sciences, Vol.5, Issue.5, pp.1-7, 2018

• Open Access   Article

  Albizia lebbeck (L.) Benth. : A Short Review

  Purendra Singh, Teena Agrawal

  Review Paper | Isroset-Journal (IJSRCS)

  Vol.5 , Issue.5 , pp.8-11, Oct-2018

  Abstract

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  Abstract
  Albizia lebbeck (L.) Benth. (Family- Fabacrae) are commonly known as shirisha, siris and shris in hindi [1]. It is a significant medicinal tree found in India and other countries [2] Folk medicine of the natures is the medicines of the local peoples. They are the resultant of the human close observation of the nature as well as their natural organisms. In this case they watch the plants and their products and the ultiseses them for the cure of the diseases. Magic and the witchcraft play a great role in it. In these days the diseases was supposes to be the factor for the resultant of the environment as well as the external factors are different from the chemical medicines; they are the part of their cultures. This information passes from the generation to the generation by the talking and by the other means. The main difference between modern chemical medicine and traditional folk medicine is the causal factors of the disease. While modern chemical medicine tries to explain the causes of disease by germ theory, traditional medicine, which also accepts the existence of germs, explains disease by magical and supernatural event. Here in this review articles we are presenting the general aspects of the A. lebbeck as well as the there some applications which are used by the peoples .The plant is very valuable from the ethnobtanical point of view and there parts extracts are used in the Indian Ayuerveda as well as in the homeopathy and the Arabic medicines.

  Key-Words / Index Term
  Albizia lebbeck (L.) Benth., germ theory, traditional medicine, the Indian Ayuerveda, Folk medicines’, homeopathy and the Arabic medicines

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  Citation
  Purendra Singh, Teena Agrawal, "Albizia lebbeck (L.) Benth. : A Short Review," International Journal of Scientific Research in Chemical Sciences, Vol.5, Issue.5, pp.8-11, 2018