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  Introduction
 Common Name
 Jatropha curcas Plant
 Plantation and Cultivation
 History of Jatropha curcas
 Uses of Jatropha curcas
 Medicinal Properties
 Storage and Trading
 Modern Study
 Economy
 Toxicity
 More information

 
   Introduction 
   The  energy crop that produces biofuels and holds particular promise for sustainable development and a sustainable environment is Jatropha a non-food crops. The seeds of Jatropha contain 27-40% oil  that can be processed to produce a high-quality biodiesel fuel, usable in a standard diesel engine. Since feedstock is the single largest cost component in biodiesel production, this considerably less expensive feed stock give the producers a significant cost advantage over producers use rapeseed and soybean oil. To break the link between biodiesel feedstock and food products; Jatropha a non-food oil bearing crops are the cheapest and the viable business propositions.
   Recently artificial blood vessels were developed from Jatropa by IIT-Madras.
 Jatropha plant begin to produce at 4-5 months and reach full productivity at about 3 years. The female flowers are 4-5 times more numerous than the male ones.
 
  Common Name
 Family name:    Euphorbiaceae       
 Latin name:       Jatropha Curcas L            
 English name :  Purging Tree, Curcas Nut, Physic Nut, castor oil 
 Sanskrit:           kananaeranda, kananaerend, parvataranda           
 Hindi:                Ratanjyot, bagbherenda, jangliarandi, safedarand
 Bengali:            bagbherenda, erandagachh         
 Tamil:               kadalamanakku, kattamanakku     
 Telgu:               Pepalam         
 Malayalam        Katamanak
 Gujarathi -        Jepal  
 Nepal   :           kadam      
 Chinese:          yu-lu-tzu :          
 

  Jatropha curcas  fruit
  Jatropha curcas fruit

   Jatropha curcas plant
  
  Jatropha curcas plant
   Jatropha  curcas seeds
 
Jatropha curcas seeds
 

  Jatropha curcas Plant
  Jatropha curcas is a small evergreen  shrub, 3 to 4 meters high of significant importance with several  industrial and medicinal uses. In India it is found almost in all states and Gujarat, Rajasthan, Maharashtra and Tamil Nadu are the main states cultivating this crop. It is with smooth gray bark, which exudes a whitish colored, watery, latex when cut.
Leaves:  It has large green to pale-green leaves, alternate to sub-opposite, three-to five-lobed with a spiral  phyllotaxis. It shedding the leaves in the dry season.
Flowers:  The petiole length ranges between 6-23 mm. The inflorescence is formed in the leaf axil. Flowers are formed terminally, individually, with female flowers usually slightly larger and occurs in the hot seasons.  In conditions where continuous growth occurs, an unbalance of pistillate or staminate flower production results in a higher number of female flowers. Flowering occurs during the wet season and two flowering peaks are often seen. In permanently hu-mid regions, flowering occurs throughout the year. .
Fruits:  Fruits are produced in winter when the shrub is leafless, or it may produce several crops during the year if soil moisture is good and temperatures are sufficiently high. Each inflorescence yields a bunch of  approximately 10 or more ovoid fruits. A three, bi-valved cocci is formed after the seeds mature and the fleshy exocarp dries.
Seeds: The seeds become mature when the capsule changes from green to yellow, after two to four months. The seeds mature about three months after flowering.
  
Plantation and Cultivation
  Jatropha curcus is a drought-resistant perennial, growing well in marginal/poor soil. It is easy to establish, grows relatively quickly and lives, producing seeds for 50 years. Jatropha curcas grows almost anywhere , even on gravelly, sandy and saline soils. It can thrive also on the stony soil.
  The plant is easily propagated by direct seeding, precultivation of seedlings, transplanting of spontaneous wild plants and direct planting of cuttings. Seed should be collected when capsules split open. Use of fresh seeds improves germination. Intervals of presoaking and drying, or partial removal of the testa, are more successful than presoaking alone. With good moisture conditions, germination takes 10 days. The seed shell splits, the radicula emerges and 4 small peripheral roots are formed. Soon after development of the 1st leaves, the cotyledons wither and fall off. Further growth is sympodial.
  Seedlings are susceptible to competition from weeds during their early development. Therefore weed control, either mechanical or with herbicides, is required during the establishment phase. Satisfactory planting widths are 2 x 2  m, 2.5 x 2.5 m, and 3 x 3 m. This is equivalent to crop densities of 2500, 1600  and 1111 plants/ha, respectively. Under good rainfall conditions, nursery plants bear fruit after the 1st rainy season, while directly seeded plants bear for the 1st time after the 2nd rainy season. With vegetative propagation, the 1st seed  yield is higher. At least 2-3 t of seeds/ha can be achieved in semi-arid areas. 
  
History of Jatropha curcas
  The centre of origin of Jatropha curcus is believed to be Mexico and Central America.The specific name, curcas, was first used by Portuguese doctor Garcia de Orta more than 400 years ago  It has been introduced to Africa and Asia and is now culti-vated world-wide. This highly drought-resistant spe-cies is adapted to arid and semi-arid conditions. 
 
Uses of Jatropha curcas
 
Source of biofuel
  Biodiesel produced from Jatropha is one of the most promising solutions for tackling the growing carbon emissions from transport. That is why the Planning Commission of India has nominated it as ideal plant for biodiesel. 
  Jatropha
plant is a prominent and cheap source of biofuel. The oil obtained from decorticated seeds by expression or solvent extraction is known in the trade as 'Jatropha Oil'. The Crude oil can be processed & Used as Biofuel or Substitute HSD to the tune of 20%  blend. This is an environmentally safe, cost effective and renewable source of non-conventional energy as a promising substitute to Diesel, Kerosene, LPG, Coal, firewood, etc.The oil can be combusted as fuel without being refined. It burns with clear smoke-free flame, tested successfully as fuel for simple diesel engine. 
 The bi-product glycerin emanating out of biodiesel is used for soap making. Biogas is also produced from oil cake and it contains 70 percent methane. Its degradation rate is 70- 80 per cent. Bio-diesel is a nontoxic, biodegradable 100% natural energy alternative to petroleum fuel. It is an environmentally friendly fuel.
 Lipids:  The seeds yield up to 31-37% of a valuable oil. It is used to prepare varnish after calcination with iron oxides. Hardened Jatropha oil could be a satisfactory substitute for tallow or hardened rice bran oil. In Europe it is used in wool spinning and textile manufacture. Along with burnt plantain ashes, oil is used in making hard homemade soap.
 Wax: The bark contains a wax composed of a mixture of ‘melissyl alcohol’ and its melissimic acid ester.
 Erosion control:   Jatropha curcas was recently planted in arid areas for soil-erosion control. in Cape Verde
 Nitrogen fixing:  Press cake cannot be used in animal feed because of its toxic properties, but it is valuable as organic manure due to a nitrogen content similar to that of seed cake from castor bean and chicken manure. The nitrogen content ranges from 3.2 to 3.8%, depending on the source. Tender branches and leaves are used as a green manure for coconut trees. All plant parts can be used as a green manure.
 Boundary support:  Widely cultivated in the tropics as a living fence in fields and settlements. Jatropha  is not browsed by cattle; so it can grow without protection and can be used as a hedge to protect fields.
 Salt substitute:  It roots ashes are used as a salt substitute. HCN and Rotenone are present.
 Use as jet fuel:  Aviation fuels may be more widely substituted with biofuels such as jatropha oil than fuels for other forms of transportation.
 Light Hydrocarbon Fuel:  Researchers tested Jatropha's ability to produce light Hydrocarbon fuels.

 

   Medicinal Properties
 
Jatropha is used for diseases like cancer, piles, snakebite, paralysis, dropsy etc.
 
Jatropha 1-2 roasted seeds are reported  to act as a purgative but larger doses may be dangerous. The seeds have been substituted for castor oil and are sometimes called ‘larger castor oil’. The oil is widely used for skin diseases and to soothe pain such as that caused by rheumatism . 
  Jatropha
oil is used to stimulate hair growth. The seeds are also used in the treatment of syphilis.
  Juice or latex of Jatropha is applied directly to wounds and cuts as a styptic and astringent to clean teeth, gums, and to treat sores on the tongue and in the mouth.  
  Jatropha
also has coagulating effects on blood plasma. A methanol extract of Jatropha leaves afforded moderate protection for cultured human lymphoblastoid cells against the cytopathic effects of the human immunodeficiency virus.
  Preparations of the Jatropha plant, including seeds, leaves and bark, fresh or as a decoction, are used in traditional medicine and for veterinary purposes. A leaf infusion is used as a diuretic, for bathing, to treat coughs, and as an enema in treating convulsions and fits. Leaves are also used to treat jaundice, fevers, rheumatic pains, guinea worm sores and poor development of the fetus in pregnant women. The leaves produce a sap that has haemostatic properties; it is used to dress wounds. In Ghana the ashes from the burnt leaves are applied by rectal injection for haemorrhoids. The root bark is used to relieve the spasms of infantile tetanus and is used for sores, dysentery and jaundice. The juice of the flowers has numerous medicinal qualities.
 
Storage and Trading
  
Seeds are oily and do not store for long. Seeds older than 15 months show viability below 50%. High levels of viability and low levels of germination shortly after harvest indicate innate (primary) dormancy. 
  Modern Study
 
Recently an  Artificial blood vessels developed from Jatropha by IIT- Madras. A biodegradable polymer recently developed from Jatropha have attracted researchers from IIT-Madras to work towards a project in this direction. Medical institute SCTIMST and a belgium based multi-national company have also evinced interest in this project. .
 
Jatropha was recently recommended as a biofuels crop for developing countries by UN  It is also useful for:  Wasteland Reclamation and Reforestation, Income generation from previously unusable areas, Provide huge opportunities from new sustainable and renewable land resources  Jatropha also helps for crops Creating employment Nursery development, soil preparation, irrigation systems, Plantation maintenance, seed collection, oil extraction and Refinery control.  Benefit from the increased demand for employment in infrastructure, logistics and Transportation and Breaking the cycle of poverty
   On December 30, 2008 Air New Zealand successfully completed a test flight from Auckland using a 50/50 mixture of jatropha oil and Jet A1 in one of the four Rolls-Royce RB211 engines of a 747 jumbo jet. The two-hour test  flight could mark another promising step for the airline industry to find cheaper and more  environmentally friendly alternatives to fossil fuel. Air New Zealand announced plans to use the new fuel for 10% of its needs by 2013. Jatropha oil is significantly cheaper than crude oil, costing an estimated $43 a barrel.
 But the most regularly repeated claim about jatropha is that it will grow on so-called marginal land, and will therefore not compete with food crops, found two major flaws with this argument.
 First, marginal land is often used as a source of firewood or medicinal plants. Second, while jatropha may grow on such land, that does not mean it will produce enough oil to be economically viable.

  Economy   

  Jatropha cultivation generates an income of RS 25000(US$ 625) / ha and RS.150, 000(US$ 3750)/ha from 5th year onwards in existing system of farming and if grown in 200 hectares in a village, it can provide adequate employment to all landless workers all through the year.
  Seed yields under cultivation can range from 1,500 to 2,000 kilograms per hectare, corresponding to extractable oil yields of 540 to 680 litres per hectare (58 to 73 US gallons per acre).
  While Jatropha holds a great deal of potential as a biodiesel feedstock, it is also important to acknowledge many hurdles must be overcome before the crop can become economically viable in most parts of the world. 
  Jatropha is a valuable multi-purpose crop to alleviate soil degradation, desertification and deforestation,  which can be used for bio-energy to replace petro-diesel, for soap production and climatic protection, and hence deserves specific attention. Jatropha can help to increase rural incomes, self-sustainability and alleviate poverty for women, elderly, children and men, tribal communities, small farmers. It can as well help to increase income from plantations and agro-industries.
  
Toxicity
   Jatropha oil contains a toxin, curcasin. The albumen of the kernel is a poison, toxalbumen cursin, most abundant in the embryo. Another poison, a croton resin, occurs in the seeds and causes redness and pustular eruptions of the skin. The plant is listed as a fish poison. Aqueous extracts of J. curcas leaves were effective in controlling Sclerotium spp., an Azolla fungal pathogen.
  The seed oil, extracts of J. curcas seeds and phorbol esters from the oil have been used to control various pests, often with successful results. In Gabon, the seeds, ground and mixed with palm oil, are used to kill rats. The oil has purgative properties, but seeds are poisonous; even the remains from pressed seeds can be fatal.
 More information
 
1.Centre for Jatropha Promotion & Biodiesel (CJP)
     It is the Global authority for scientific commercialization of  Jatropha & other non-food biofuel crops and designs
     and implements the growing of non-food biofuel crops  worldwide in a structured Agri-Supply chain, Value additions
     and research activities  

 2 . Indian Council of Forestry Research and Education (ICFRE). Dehra Dun, India.
 3. Hahnemann Charitable Mission Society, 301,Mahaveer Nagar-II,Durgapura,Jaipur-302018
 4. CENTRE FOR JATROPHA PROMOTION & BIODIESEL, B-132, SAINIK BASTI, CHURU- 331001, Rajasthan  
 5. Global Jatropha Training Programme And Jatropha Distance Learning Programme
 6. Achten WMJ, Verchot L, Franken YJ, Mathijs E, Singh VP, Aerts R, Muys B  Jatropha bio-diesel production and use. 

  Jatropha curcas seed oil that are mosquito-repelling compounds

     mosquito
 US Department of Agriculture (USDA) scientists have identified components of Jatropha curcas seed oil that are responsible for mosquito repellency.
 Researchers from USDA's principal intramural scientific research agency,
Agricultural Research Service (ARS), learned that people in India burn J
curcas seed oil in lamps to keep insects out of their homes and other
areas.They extracted smoke from the plant in a laboratory and analysed its
properties. Free fatty acids and triglycerides were among a number of
active compounds found to be effective at preventing mosquitoes from biting.
 Scientists have identified triglycerides as having mosquito repellent activity, researcher Charles Cantrell said in a USDA statement.

 
 

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