FUNCTIONAL PROPERTIES OF STARCH ISOLATES FROM THE SEEDS OF Delonix Regia (FLAME OF THE FOREST) AND Lonchocarpus Sericeus (SENEGAL LILAC)

OYEDEJI, ABDULRASAQ and Odeyemi, Bibilomo (2019) FUNCTIONAL PROPERTIES OF STARCH ISOLATES FROM THE SEEDS OF Delonix Regia (FLAME OF THE FOREST) AND Lonchocarpus Sericeus (SENEGAL LILAC). In: 1st National Conference of WITED, Ilaro Chapter, August 13 - 19, 2019, The Federal Polytechnic Ilaro, Ogun state.

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Abstract

Functional properties are intrinsic physico-chemical attributes that affect the behaviour of properties in food systems during preparation, processing, manufacturing and storage. The functional properties of starches from the seeds of Delonix regia and Lonchocarpus sericeus were evaluated to determine their potential practical applications. The starches were isolated from the seeds after wet milling using the alkaline method and sedimentation. There was a significant difference between bulk and tapped density, oil and water absorption capacity, the effect of temperature on swelling power and effect of pH on solubility of the two starches. However, there was no significant difference between light transmittance, the effect of pH on swelling power and effect of temperature on solubility. The bulk and tapped density for D. regia and L. sericeus were 0.46±0.00 and 0.54±0.00 g/cm3, and 0.6±0.00 and 0.67±0.00g/cm3, respectively. Swelling power and solubility for D. regia were 5.09-2.59 g/g and 13-6.67%, respectively, and 5.35-4.67 g/g and 10.67-17.7%, respectively for L. sericeus. Oil and water absorption capacity for L. sericeus (93±0.05 and 126.67±0.12 ml/g, respectively) is lower than D. regia (144±0.18 and 333.33±0.23 ml/g, respectively). An increase in pH resulted in increased in swelling and solubility also for the two starches. Values obtained in the present study for the different parameters compared well with those reported in the literature for starches from popular legumes. The two starch isolates are therefore suggested for further studies, especially regarding the modification of their functional properties so they could be explored to meet the increasing demand for starch for domestic and industrial applications.

Item Type:	Conference or Workshop Item (Paper)
Subjects:	Q Science > Q Science (General)
Divisions:	Faculty of Medicine, Health and Life Sciences > School of Biological Sciences
Depositing User:	Unnamed user with email [email protected]
Date Deposited:	28 May 2021 11:08
Last Modified:	28 May 2021 13:32
URI:	http://eprints.federalpolyilaro.edu.ng/id/eprint/1388

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