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z Available online at http://www.journalcra.com INTERNATIONAL JOURNAL OF CURRENT RESEARCH International Journal of Current Research Vol. 5, Issue, 03, pp.472-478, March, 2013 ISSN: 0975-833X RESEARCH ARTICLE COMPARATIVE ANALYSIS OF CALCIUM OXALATE CRYSTALS OF THREE EDIBLE TAXA IN SOUTH WEST BENGAL, INDIA Sk Md Abu Imam Saadi and *Amal Kumar Mondal Department of Botany and Forestry Plant Taxonomy, Molecular Taxonomy and Biosystematics Laboratory Vidyasagar University, Midapore-721102, Paschim Medinipore, West Bengal ARTICLE INFO ABSTRACT Article History: Calcification and the formation of crystals is a common phenomenon in many plant groups under normal conditions. In Angiosperms, calcium oxalate is predominantly deposited as calcium salt and the most commonly Received 19th December, 2012 encountered shapes include the raphides, druses, styloids, prismatic and crystal sands. They are varies from species Received in revised form to species or with in species, mainly occurs sporadically in all organs. Raphides (long, slim, pointed crystals) were 08th January, 2013 most common, but druses (crystal aggregates) were also found in most of the plant organ, which also give Accepted 24th February, 2013 mechanical support, mineral balance, waste sequestration, and protection against herbivores have all been proposed Published online 19th March, 2013 as crystal functions. Raphides have long been associated with the acridity of the aroids, meaning that when eaten raw they cause swelling of the lips, mouth and throat. Detoxification via cooking, pounding or leaching neutralizes Key words: the chemical, hence making the aroids edible, but does not destroy or degrade the raphides The edibility is depend Araceae, Calcium oxalate crystals, upon the distribution and frequency of calcium oxalate crystals (COCs).
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