The Effect of Pre-Milling Treatments on Functional and Rheological Properties of Brachystagia eurycoma (Achi) Seed Flour and Gum
DOI:
https://doi.org/10.26765/DRJAFS10428200Keywords:
Flours, gums, soaking, boiling, toasting, fermentationAbstract
Brachystegia eurycoma has good gelation properties which can impact a gummy texture when used in soups. The aim of this study is to explore the effect of pre-milling treatments on the functional and rheological properties of B. eurycoma seed flour and gum which will enhance the knowledge on utilizing Achi as a versatile ingredient in various food products. This study evaluates the effect of pre-milling treatments on the functional and rheological properties of B. eurycoma (achi) seed flours and gums. Batches (1kg) of B. eurycoma (Achi) seeds were subjected to four different pre-milling treatments (soaking, boiling, toasting, and fermentation) at various time intervals followed by processing steps to obtain fine flour and gum samples. Locust bean flour and gum were used as control. The results from the different pre-milling treatments of B. eurycoma seed flours and gum showed that the wettability of the flour and gum samples were high and rapid which ranged from 35.33±0.58s to327.33±6.43s and 46.67±1.06s to 99.67±2.08 respectively, hence it tends to reduce clumping, ensuring efficient functionality. The Modulus of elasticity of B. eurycoma flours and gums were also high with a range of 75.47±0.00N/mm2 to 182.42±0.01N/mm2, this indicates a relatively incompressible fluid. Gums from seeds boiled for 30min and 45min had the highest emulsion capacity, foaming capacity and wettability (B30 = 72.87%, B45 = 76.50%; B30 = 23.83%, B45 = 27.40% and B30= 91.33 s, B45= 99.67 s respectively), hence, can be said to be the best gum with high stability for commercial purposes. Gum samples from seeds fermented for 18 hrs had low viscosity with high shear rate (44.66 NS/mm2 and 41.04 NS/mm2; 0.26S-1 and 0.28S-1) hence, can be said to show a pseudoplastic or shear thinning behavior of B. eurycoma gum. This will enhance the texture, mouth feel, stability and uniformity of the gums when incorporated into a food system. This study revealed that B. eurycoma flours and gums from different pre-milling treatments will be very useful for the large-scale manufacturers and consumers not just because it is economical but is also a natural additive.
References
Abbey, B.W. and Ibeh, G.O. (1998). Functional properties of raw and heat-treated cowpea (VignaunguculataWalp) flour. Journal of Food. Science. 53: 1775-1777.
Adewale, K.O. and Mozie, O.S. (2010). Names of different soup thickness in some tribes in Nigeria. 2:65.
Adikwu, M.U. and Enebeke, T.C. (2007). Evaluation of snail mucin dispersed in Brachystegia eurycoma gum gel as a wound healing agent. Animal Research International. 4(2): 685-697.
Ajayi, F.A., Oderinde, R.A., Kajogbola, D.O. and Uponi, J.I. (2006). Oil content and fatty acid composition of some underutilized legumes from Nigeria. Food chemistry. 4: 115 – 120.
Association of Official Chemists (A.O.A.C.) (2000). Official methods of analysis. 17th edition, Association: Official Applied Bacteriology. Washington, DC: 69: 609-633.
Aviara, N.A., Power, P. P. and Abbas, T. (2013). Moisture-dependent physical properties of moringaoleifera seed relevant in bulk handling and mechanical processing. Industrial Crops and Products. 42: 96-104.
Banigo, E.B. and Mepha, H.D. (2008). Isolation and some physicochemical characteristics of isolated starch from Nigerian varieties of African yam bean (Sphenostylisstenocarpa). Nigerian food Journals. 26(2):2-11.
Bouzouita, N., Khaldi, A., Zgoulli, S., Chebil, L., Chekki, R., Chaabouni, M.M. and Thonart, P. (2007) The Analysis of Crude and Purified Locust Bean Gum: A Comparison of Samples from Different Carob Tree Populations in Tunisia. Food Chemistry. 101: 1508-1515.
Dakia, P.A., Blecker, C., Robert, C., Wathelet, B. and Paquot, M. (2008). Composition and physiochemical properties of locust bean gum extracted from whole seeds by acid or water dehulling pre-treatment. Food hydrocolloids. 22(5), 807-818.
Ezeoke, C. (2010). The Effect of Processing on the Rheological Properties of Some Food Thickeners (Achi, Ukpo, Ofo). Biotechnological Thesis Submitted to the Department of Food Science and Technology, Federal University of Technology, Owerri Nigeria, 3 – 4.
Ikegwu, O.J., Okechukwu, P.E. and Ekumankana, E.U. (2010). Physico-Chemical and Pasting Characteristics of Flour and Starch from Achi; Brachystegiaeurycoma Seed. Journal of Food Science and Technology. 8(2): 58-66.
Makri E, Popalamprou E, Doxastakis G (2005). Study of Functional properties of seed storage proteins from indigenous European Legume crops (Lupin pear and brad bean) in a mixture with polysaccharide. Food Hydrocolloids. 19:583-594.
Moorthy, S. N., Rickard, J. and Blanshard, J. M. V. (1996). “Influence of gelatinization characteristics of cassava starch and flour on the textural properties of some food products”, Colombia. 150-155.
Moure, I. E. Francis, A. and Anumnu, I. U. (2006). Thesis B.Tech on the Effect of Emulsion Capacity on Legumes Flour. University of Port Harcourt. 20:40.
Nwakaudu, A.A., Nwakaudu, M.S., Owuamanam, C.I., Alagbaoso, S.O., Njoku, N.E., Agunwah, I.M., Ofoedu, C., Ojukwu, M., Ofoegbu, J.C. and Anikwenze, R.O. (2017). Extraction and Evaluation Of Hydrocolloids From “Achi” (Brachystegiaeurycoma) And Its Application On A Water Melon Fruit Juice. European Journal of Food Science and Technology. 5:22-28.
Nwosu, J.N., Ogueke C.C., Owuamanam, C.I. and Onuegbu, N. (2011). The Effect of Storage Conditions on the Proximate and Rheological Properties of Soup Thickener Brachystegiaeurycoma (Achi). 3(5): 52-29.
Nwosu, J. N. (2012). The Rheological and Proximate Properties of some Food thickeners (“Ukpo”,“Achi” and “Ofo”) as affected by processing. International Journal ofBasic and AppliedSciences. 4: 304-312.
Ohenhen, R. E. and Ikenbomeh, M. J. (2007). Shelf stability and enzyme activity studies of ogi: a corn meal fermented product. Journal of American Science. 3 (1): 38-42.
Onwuka, G. I. (2005). Food analysis and instrumentation theory and practice. Naphtali Prints Lagos. 134-135.
Thurston, G. (1996). Theory of oscillation of a viscoelastic fluid in a circular tube. Journal of the Acoustical Society of America. 32:210-213.
Udensi, B. A. and Onuora, J. O. (1992). Chemical and functional properties of some soya bean flours in Nigerian market. Book of abstracts, 16th Annual Conference of NIFST. 26 – 30.
Ukpabi, U.J. and Ndimele, C. (1990). Evaluation of Garri production in Imo state Nigeria. Nigerian food Journal. 8:105-110.
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