A Comparison of the Nutrient and Antinutrient Composition of Industrially Processed Zimbabwean Jatropha curcas and Glycine max Meals
Abstract:
In a study to compare the nutritive and Anti-nutritional Factors (ANFs) composition of industrially processed shelled Jatropha curcas (Physic nut) kernels and soyabean (Glycine max) seed; samples of industrially processed Soyabean Meal (SBM) generated from the traditional industrial hexane extraction method were used. Samples of J. curcas Meal (JCM) were derived from double solvent extraction of shelled J. curcas kernels in a hexane-ethanol extraction system followed wet extrusion (126°C, 2 atmospheres, 10 min contact time) and then re-extraction with hexane. The re-extracted JCM was then heated with pressurized steam at 121°C for 30 min before dried samples were used in the laboratory analyses. Significant differences (p<0.05) in both the nutrient and ANFs existed between the seed meals. The JCM had a significantly higher (p<0.05) Crude Protein (CP) with 577.00 g kg-1 DM versus 470.80 g kg-1 DM in SBM. Similarly JCM had a higher (p<0.05) ash, calcium and phosphorus content with 119.7, 12.4 and 22.26 g kg-1 DM, respectively versus the 73.8, 3.43 and 7.31 g kg-1 DM, respectively in SBM. The SBM and JCM registered statistically similar levels of Acid Detergent Fibre (ADF); however JCM had a significantly higher (p<0.05) Neutral Detergent Fibre content (NDF) at 177.30 g kg-1 DM with the SBM having 125.60 g kg-1 DM Neutral Detergent Fibre. The JCM had a residual Phorbol Esters (PEs) concentration of 0.8 mg g-1 that was equivalent to a decrease of 87.69% from the 6.5 mg g-1 PEs content in raw shelled Jatropha curcas kernels. The SBM registered 19.40 TUI mg-1 as trypsin inhibitor activity while the JCM did not show any such activity. Both meals did not cause agglutination and haemolysis of erythrocytes indicating that lectins and saponins were completely inactivated during the industrial processing of each meal.
How to cite this article
E. Chivandi, B. Kachigunda and F. Fushai, 2005. A Comparison of the Nutrient and Antinutrient Composition of Industrially Processed Zimbabwean Jatropha curcas and Glycine max Meals. Pakistan Journal of Biological Sciences, 8: 49-53.
REFERENCES
Mtimuni, J.P., 1995. Ration Formulation and Feed Guides. Likuni Press, Lilongwe, Malawi, ISBN: 9789990890600, Pages: 57
Mapako, M., 1998. Background Information on Makosa Ward, Mutoko District. In: Exploring the Potential of Jatropha Curcas in Rural Development and Environmental Protection, Foidl, N. and A. Kashyap (Eds.). Scientific and Industrial Research and Development Centre, Harare, Zimbabwe, pp: 52-53
Gaydou, A.M., L. Menet, G. Ravelojaona and P. Geneste, 1982. Vegetable energy sources in Madagascar: Ethyl alcohol and oil seeds (French). Oleagineux, 37: 135-141.
Heller, J., 1996. Physic Nut, Jatropha curcas L. IPGRI, Rome, Italy
Makkar, H.P.S. and K. Becker, 1997. Potential of Jatropha curcas Seed Meal as a Protein Supplement to Livestock Feed, Constraints to its Utilization and Possible Strategies to Overcome Constraints. Nicaragua Publishers, Managua
Nell, F.J., F.K. Siebrits and J.P. Hayes, 1992. Studies on nutritive value of cowpeas (Vigna unguiculata). S. Afr. J. Anim. Sci., 22: 157-160.
Wink, M., C. Koschmieder, M. Sauerwein and F. Sporer, 1997. Phorbol Esters of Jatropha curcas-Biological Activities and Potential Applications. Nicaragua Publishers, Managua
AOAC, 1990. Official Methods of Analysis. 15th Edn., Association of Official Analytical Chemists, Washington, DC., USA., pp: 200-210
Direct Link
van Soest, P.J., J.B. Robertson and B.A. Lewis, 1991. Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. J. Dairy Sci., 74: 3583-3597.
CrossRef PubMed Direct Link
Reed, J.D., P.J. Horvath, M.S. Allen and P.J. van Soest, 1985. Gravimetric determination of soluble phenolics including tannins from leaves by precipitation with trivalent ytterbium. J. Sci. Food Agric., 36: 255-261.
CrossRef
Gordon, J.A. and M.D. Marquardt, 1974. Factors affecting haemaglutination by concanavalin A and soyabean agglutinin. Acta Biochim. Biophys., 332: 136-144.
Gaborit, T., L. Quillien and J. Gueguen, 1993. Determination of Trypsin Inhibitor Activity in Seeds by Microtitre Plate Method. Wageningen Press, The Netherlands
Aderibigbe, A.O., C.O.L.E. Johnson, H.P.S. Makkar, K. Becker and N. Foidl, 1997. Chemical composition and effect of heat on organic matter- and nitrogen-degradability and some antinutritional components of Jatropha meal. Anim. Feed Sci. Technol., 67: 223-243.
CrossRef Direct Link
GenStat, 2003. GenStat Release 7.1. 7th Edn., Lawes Agricultural Trust, Rothamsted Experimental Station, UK
Chivandi, E., J.P. Mtimuni, J.S. Read and S.M. Makuza, 2004. Effect of processing method on phorbol esters concentration, total phenolics, trypsin inhibitor activity and the proximate composition of the Zimbabwean Jatropha curcas provenance: A potential livestock feed. Pak. J. Biol. Sci., 7: 1001-1005.
CrossRef Direct Link
McDonald, P., R.A. Edwards, J.F.D. Greenhalgh and C.A. Morgan, 1995. Animal Nutrition. 5th Edn., Longman Singapore Publishers (Pvt.) Ltd., Singapore
Price, K.R., I.T. Johnson, G.R. Fenwick and M.R. Malinow, 1987. The chemistry and biological significance of saponins in foods and feedingstuffs. Crit. Rev. Food Sci. Nutr., 26: 27-135.
CrossRef PubMed Direct Link
Makkar, H.P.S., K. Beaker, F. Sporer and M. Wink, 1997. Studies on nutritive potential and toxic constituents of different provenances of Jatropha curcas. J. Agric. Food Chem., 45: 3152-3157.
CrossRef
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