Application Of Peleg Model On Hydrothermal Treatment Of Tiger Nut Tubers (Cyperus Esculentus) And Effect Of Dehulling Efficiency On Microbial Load

Djomdi, Djomdi

doi:10.24966/fsn-1076/100070

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“…This absorption was not constrained by the various treatments applied to the tubers during soaking. This phenomenon was observed by other authors and it was attributed to plasticizing effect of water at the temperature of starch gelatinization [10,[13][14][15]24].…”

Section: Water Absorption Of Black Variety Of Tiger Nut Tuber In Ascorbic Acid Kanwa and Calcium Hydroxide Solutionssupporting

confidence: 67%

Chemical Treatment of Black Tiger nut Tubers (<em>Cyperus esculentus</em>) Variety to Obtain a Bio-based Product

Djomdi¹,

Ejoh²,

Pierre³

et al. 2021

Preprint

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Black variety of tiger nut tubers (Cyperus esculentus) were differently processed in ascorbic acid and alkaline (Ca(OH)2 and Kanwa) solutions at different concentrations and temperatures. The effect of these treatments on the water content (swelling), soluble loss, dehulling efficiency and microbial load was investigated. Water content or swelling of the tiger nut soaked in acid and alkaline solutions can be predicted by Peleg model like with brown variety. This swelling lead to enhance dehulling efficiency of tuber but caused soluble solute loss overall at the highest temperature of soaking in vitamin C solution. Like soaking in water, the constant of Peleg (k1) decrease with the increase of the temperature of soaking, whereas the constant of capacity of Peleg (k2) is approximately 0.018% for all the conditions. Dehulling efficiency also increased with increasing temperatures (65% at 20°C to 70% at 60°C) for tiger nut tubers soaked in water (0 g/L), dehulling efficiency appeared most strongly affected by concentrations and temperatures of soaking solutions. Like dehulling efficiency, ascorbic solutions has given the best results in term of reduction of microbial load compared to the other soaking solutions. This reduction is considerable at the higher temperatures, reaching a maximum of 4.8 log reduction. Soaking and dehulling treatments gave to tiger nut tuber effective decontamination in term of microbial load and obtained good microbiological quality for final process.

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Section: Water Absorption Of Black Variety Of Tiger Nut Tuber In Ascorbic Acid Kanwa and Calcium Hydroxide Solutionssupporting

confidence: 67%

Chemical Treatment of Black Tiger nut Tubers (<em>Cyperus esculentus</em>) Variety to Obtain a Bio-based Product

Djomdi¹,

Ejoh²,

Pierre³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

Application Of Peleg Model On Hydrothermal Treatment Of Tiger Nut Tubers (Cyperus Esculentus) And Effect Of Dehulling Efficiency On Microbial Load

Cited by 1 publication

References 0 publications

Chemical Treatment of Black Tiger nut Tubers (<em>Cyperus esculentus</em>) Variety to Obtain a Bio-based Product

Chemical Treatment of Black Tiger nut Tubers (<em>Cyperus esculentus</em>) Variety to Obtain a Bio-based Product

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