Evaluation of vegetable extracts from the semi - arid as natural ph indicator Report as inadecuate




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F. Í. S. P. VALDEVINO ; F. B. OLIVEIRA NETO ; F. F. M. SILVA ; L. M. BERTINI ; L. A. ALVES ;HOLOS 2015, 1

Author: S. E. T. BRILHANTE

Source: http://www.redalyc.org/articulo.oa?id=481547176002


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HOLOS ISSN: 1518-1634 holos@ifrn.edu.br Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte Brasil BRILHANTE, S.
E.
T.; VALDEVINO, F.
Í.
S.
P.; OLIVEIRA NETO, F.
B.; SILVA, F.
F.
M.; BERTINI, L.
M.; ALVES, L.
A. EVALUATION OF VEGETABLE EXTRACTS FROM THE SEMI - ARID AS NATURAL pH INDICATOR HOLOS, vol.
1, 2015, pp.
3-12 Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte Natal, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=481547176002 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative BRILHANTE ET AL.
(2015) EVALUATION OF VEGETABLE EXTRACTS FROM THE SEMI-ARID AS NATURAL pH INDICATOR S.
E.
T.
BRILHANTE, F.
Í.
S.
P.
VALDEVINO, F.
B.
OLIVEIRA NETO, F.
F.
M.
SILVA, L.
M.
BERTINI and L.
A.
ALVES* Instituto Federal do Rio Grande do Norte leonardo.alcantara@ifrn.edu.br* Article received December-2013 and accepted in February-2015 DOI: 10.15628-holos.2015.1868 ABSTRACT Given the various difficulties to expose the contents of the subject of chemistry is a constant search for alternative materials to facilitate learning.
This may partly be due to chemical science to be a significant practical character.
However, due to professional educational institutions and material limitations ends up being passed on to the student of predominantly theoretical way, requiring a high degree of abstraction and consequently in their disinterest the same.
In this context , we investigated the use of ethanol extracts of various plants, such as: Jitirana (Ipomoea glabra ), Íxora (Ixora coccínea), Centro (Centrosema brasilianum) and Candlebush (Senna alata) flowers, Beet (Beta vulgaris L.) fruit and Urucum (Bixa orellana) seeds as an acids and bases natural indicator, from laboratory tests ca...





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