Influence of Some Physical Properties of Cassava Tubers on Mechanical Compressive Cracking force of TMS 30572 and TMS 4(2)1425 Cassava Varieties

Olutosin, O Ilori; Dare, A. A.; Ayowumi, R Soji-Adekunle; Oluwaseun, Omikunle; Adeleke, Kehinde M.; Olumide, O Towoju

doi:10.12691/ajfst-5-6-2

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…The results showed that average peel thicknesses of 2.36 (±0.54) mm, 2.41 (±0.58) mm and 2.60 (±0.41) mm were obtained for the Sika bankye root, Duade kpakpa and Dudze root respectively with no significant differences (p < 0.05). Similar average values have been reported by Oriola and Raji (2013), Nwachukwu and Simonyan (2015) and Ilori et al (2017).…”

Section: Resultssupporting

confidence: 90%

Cutting resistance assessment for three varieties of cassava roots

Amoah,

Amoah Asante,

Amuaku

et al. 2023

JGhIE

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Confronted with limited data on the physical and mechanical properties of cassava peel and root to aid machine developers, an efficient model has been developed to assess the peel and root resistance to cutting. The evaluation was done with knife thicknesses of 1.0, 1.5 and 2.0 mm using cassava varieties such as Duade kpakpa, Dudze and Sika bankye as experimental samples for three postharvest delays. The knife penetrated the tuber at 50, 100 and 150 mm away from the proximal end. An average peel thickness obtained was in the range of 1.81 – 3.01 mm. The average diameters recorded ranged from 52.52 mm to 60.40 mm. The cutting resistance assessed for the Duade kpakpa, Sika bankye and Dudze cassava roots were 44.85 N, 50.01N and 53.53 N respectively with no significant differences (P ˃ 0.05). Furthermore, the strength of the peel for the Sika bankye root was 10.31 % higher than that of the Duade kpakpa root and the resistance of the Dudze peel was 6.58 % higher than that of the Sika bankye root. The penetration resistance of the tuber decreased with increasing postharvest delay and increased with increasing knife thickness. The effect of the treatments on the response variables evaluated by factorial analysis showed that significant differences generally decrease with increasing interation. Comparing the results, cutting resistances of 229.02 N, 223.09 N and 204.43 N in maximum were obtained for the Dudze, Sika bankye and Duade kpakpa cassava roots, respectively. The average cutting resistance of Dudze cassava root was 0.24 % higher than the value for Sika bankye root and the value for the Sika bankye root was 7.82 % higher than the Duade kpakpa cassava roots. It is therefore clear that the penetration resistance of the cassava cultivar to compressive cutting could be ranked as (Dudze cassava root > Sika bankye root > Duade kpakpa cassava root). The quantitative assessment by PLSR model under the knife thicknesses (R2 = 0.9689; RMSE = 2.1020) was significantly better than PLSR model under postharvest delay (R2 = 0.7845; RMSE = 4.0183). The technique employed in assessing the cutting resistance gave emphasis to the cultivar differences and provided a measuring sequence and outstanding quantitative analysis.

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Section: Resultssupporting

confidence: 90%

Cutting resistance assessment for three varieties of cassava roots

Amoah,

Amoah Asante,

Amuaku

et al. 2023

JGhIE

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A study on the influence of the loading rate and orientation on some mechanical properties of cassava tubers of different ages

Ogunnigbo¹,

Adetan²,

Morakinyo³

et al. 2021

Res. Agric. Eng.

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The study determined the effects of the speed of loading and the loading orientation on some selected mechanical properties of the TME 419 cassava tuber variety at different ages of the tuber which are essential in the design and construction of the processing and handling equipment of a cassava peeler. The properties considered include the bioyield and rupture points, compressive and rupture strengths, toughness and firmness, and moduli of stiffness and toughness, which were carried out in the transverse and longitudinal loading direction using an Instron Universal Testing Machine (UTM). As the loading rate increased from 5.00 to10.00 mm·min–1 and the age of the tuber varies from 1.00 to 2.00 years, the bioyield and rupture points, compressive and rupture strengths, toughness, firmness, moduli of stiffness and toughness in the transverse and longitudinal direction varies from 1 619.61 to 3 636.19 N and 136.08 to 384.52 N, 0.48066 to 1.07913 N·mm–2 and 0.26604 to 0.75173 N·mm–2, 766 to 1055 N·mm–1 and 1 262 to 2 965 N·mm–1, 303.98 to 553.68 mm·min–1 and 28.08 to 53.71 mm·min–1 2.30 to 4.19 N·mm–2 and 5.376 to 8.94N·mm–2 respectively. Generally, the values of the properties examined are higher in the longitudinal loading orientation than in the transverse and for a year and half old tuber which will be useful in designing an efficient cassava peeling system.

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Impact of Farming Methods on Some Anti-nutrients, Nutrients and Toxic Substances of Cassava Roots

Akpokodje

Uguru

2019

IJSRST

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This study was carried out to evaluate the effect of farming methods (organic and convectional) on some nutrients and heavy metals contents of cassava roots. Two cassava cultivars (TME 419 and pro vitamin A) were planted, employing organic and convectional farming methods. Within the organic farming, organic soil amendment was carried out, while in the convectional farming, synthesize fertilizers (NPK 15:15:15 and Maxi Calmag) were used. The organic amendment (compost manure) was formulated from poultry waste, cattle dung and wood sawdust in the ratio of 50%:25%:25% (volume to volume). The two cassava cultivars were planted and closely monitored for 10 months, applying all the relevant agronomic in relation to each farming method. Chemical analyses of the soil and cassava roots were carried out in accordance to standard methods. From the results, the farming methods had significant (p ≤ 0.05) effect on all the parameters (nitrate, copper, lead, iron, calcium and potassium) studied in the two cassava cultivars. The average nitrate content of the convectional cassava roots was 248.84 mg/kg, which was higher than the 108.59 mg/kg recorded in the organic cassava roots. In addition, the organic cassava roots had lower average calcium content (646.47 mg/kg) Compared to the convectional cassava roots (1788.36 mg/kg). However, significantly lower lead and copper contents of organic cassava roots were recorded, when compared with conventional cassava roots. The lower content of nitrate (a toxic substance) and other heavy metals (copper and lead) in the organic cassava roots, than in the convectional cassava roots shows the relevance of organic farming in modern agriculture.

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Influence of Some Physical Properties of Cassava Tubers on Mechanical Compressive Cracking force of TMS 30572 and TMS 4(2)1425 Cassava Varieties

Cited by 3 publications

References 4 publications

Cutting resistance assessment for three varieties of cassava roots

Cutting resistance assessment for three varieties of cassava roots

A study on the influence of the loading rate and orientation on some mechanical properties of cassava tubers of different ages

Impact of Farming Methods on Some Anti-nutrients, Nutrients and Toxic Substances of Cassava Roots

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