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Yalegama, Chandi
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The Physical and Functional Properties of Partially Defatted Coconut Testa Flour Marasinghe, S. S. K.; Yalegama, Chandi; Pathirana, D. T. H.; Marikkar, J. M. N.
International Coconut Community Journal Vol 37 (2021): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v37i.424

Abstract

Coconut testa is an important byproduct of the coconut industry. In this study, particle size distribution, physical and functional properties of flour produced from partially coconut testa of four local cultivars namely san raman, gon thembili, ran thembili, TallxTall were compared with those of commercial hybrid (COM) using relevant procedures. Results showed that particle size distribution, physical and functional properties of flours of different coconut cultivars were varied significantly (p<0.05). The highest bulk density value was observed for SR (0.67 g/ml) while the lowest for TxT (0.54 g/ml) (p<0.05). Maximum swelling capacity (35.00 ml) and oil absorption capacity (142.67%) were recorded for COM while the least swelling capacity (20.67 ml) and oil absorption capacity (85.67%) were recorded for RT (p<0.05). The highest emulsion activity was found for COM (50.00%) while the least value recorded for SR (42.95) (p<0.05). The maximum emulsion stability was displayed by COM (54.86%) while the least emulsion stability was recorded for GT (27.51%) (p<0.05). The observed physical properties suggested that coconut testa flour of COM variety has certain advantages over others. It could be used for partial replacement with wheat flour for value addition leading to non-cereal based products.
Physicochemical Properties of Virgin Coconut Oil Extracted from Different Coconut (Cocos nucifera L) Varieties Hewa Pathirana, Dilani; Yalegama, Chandi; Jayawardhana Arachige, Darshana; Senarathne, Malki
International Coconut Community Journal Vol 37 (2021): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v37i.440

Abstract

Virgin coconut oil (VCO) is a superior edible oil extracted from fresh coconut (Cocos nucifera L) kernel using mixed coconut varieties without considering the varietal effect. Therefore, this research focuses on the quality evaluation of VCO extracted from four types of coconut varieties, namely Sri lanka Tall×Tall (TT), a tall variety of Gon Thambili (GT), a tall variety of Ran Thambili (RT) and Philippines tall variety of San Ramon (SR). Mature coconuts from each variety were collected from the Bandirippuwa Estate of the Coconut Research Institute, Sri Lanka to extract VCO by cold press oil extraction method. The extractability of VCO from different varieties was investigated. Moisture, free fatty acid (FFA), fatty acid profile (gas chromatography), peroxide value (PV), color (Lovibond scale), total phenolic substances (Galic acid equivalent), antioxidant capacity (α,α-diphenyl-β-picrylhydrazyl, 0.1mM – DPPH method) and sun protection factor (SPF) of VCO extracted from each variety were analyzed. The experiment was conducted as a completely randomized design with three replicates. Data were analyzed using ANOVA using Tukey’s test by MINITAB 17. Oil extractability (58%-59%), FFA (0.04%-0.12%), color (0.43–0.93) and fatty acid profile of VCO did not show variation among varieties. A higher concentration of total phenolic substances was observed in GT (0.24±0.03mg GAE/100g) while antioxidant capacity (857.19±14.99mg/ml) and SPF (8.99±1.26) was rich in RT.
Evaluation of Staple Foods Supplemented with Defatted Coconut Testa Flour Fareed, Rushdah; Ulpathakumbura, Savani; Yalegama, Chandi; Hewapathirana, Dilani; Marikkar, Nazrim
International Coconut Community Journal Vol 38 (2022): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v38i.443

Abstract

Coconut testa is an important byproduct of coconut processing. In this study, the acceptability of staple foods incorporated with defatted coconut testa flour (CTF) was investigated. Foods supplemented with CTF will be ideal as a functional food for diabetes. Formulations of string hoppers incorporated with CTF were done by mixing white rice flour (RF) with CTF in four different ratios; F1 (RF: CTF=70:30), F2 (RF: CTF=75:25), F3 (RF: CTF=80:20) and F4 (RF: CTF=85:15). Likewise, formulation of flat-bread rotti were prepared by mixing wheat flour (WF) with CTF in four different ratios; P1 (WF: CTF=60:40), P2 (WF: CTF=70:30), P3 (WF: CTF=80:20) and P4 (WF: CTF=90:10). Acceptability of the formulations was determined using Friedman test and preference ranking test. According to sensory evaluation, the highest score of overall acceptability and other sensory attributes were observed for composite flour mixtures incorporated with 25% of CTF in rice flour for string hoppers (idiyappa) and 20% of CTF in wheat flour for flat- bread (rotti). The proximate analysis of the finished products namely, string hopper (idiyappa) and flat-bread (rotti) showed better nutritional properties with regard to protein, dietary fiber, fat and mineral content than respective composite flour mixtures used in their preparation. Furthermore, IF and string hopper (idiyappa) samples showed increased nutritional compositions in terms of dietary fiber, mineral content when compared to RF and flat-bread rotti samples. In conclusion, the quality attributes and dietary fibre content of the two formulated products indicated their potential use as anti-diabetic foods.
Co-Authors Fareed, Rushdah Hewa Pathirana, Dilani Hewapathirana, Dilani Jayawardhana Arachige, Darshana Marasinghe, S. S. K. Marikkar, J. M. N. Marikkar, Nazrim Pathirana, D. T. H. Senarathne, Malki Ulpathakumbura, Savani