Morphological, thermal, and pasting properties of cocoyam (Xanthosoma sagittofolium) starch from three locations in Mollucas Islands

Lopulalan, Cynthia G C; Pranoto, Yudi; Marsono, Yustinus; Marseno, Djagal Wiseso

doi:10.1088/1757-899x/980/1/012031

Cited by 1 publication

(2 citation statements)

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“…It is not a surprise that the wild ground cocoyam contained about 84% carbohydrate given starch comprises the main component (Lopulalan et al, 2020). Despite their nutritional role, carbohydrates remains the structural material that occupy a space among the members of cell membranes, and shown to participate in cellular recognition processes (Ruiz-Matute et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

“…Optimising the utilisation of natural starch cocoyam is needed in food bioprocessing, as it serves as raw materials and as additives like gelling, stabilising, and thickening agents (Lopulalan et al, 2020). Meanwhile, to achieve process improvement and optimisation of operational factors associated with agro-food products, statistical approaches such as response surface methodology (R.S.M.)…”

Section: Introductionmentioning

confidence: 99%

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Optimisation of enzymatic fermented glucose production of wild cocoyam starch using response surface methodology

2022

Global NEST Journal

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<p>The enzymatic fermentation of starch from non-edible sources using Aspergillus niger could help supplement the increasing glucose demand within the Nigeria food supply chain. Also, response surface methodology could help optimise the glucose production of starch hydrolysed from cocoyam tubers. In this work, we evaluated and optimized the enzymatic-fermented glucose production of wild cocoyam starch using response surface methodology. Wild cocoyam starch was hydrolyzed using A. niger isolated from the soil. The optimization process involved temperature, time, pH, and enzyme dosage, alongside the kinetics and thermodynamics of enzymatic hydrolysis. Optimum conditions for glucose yield of 95 % by enzyme hydrolysis included: temperature = 35 °C; time = 5 days; pH = 5.5; and enzyme dosage =0.16 g/mL, with wild cocoyam showing promising as substrate. The F-value of quadratic model terms appeared statistically significant (F= 65.42, p<0.0001). Fourier Transform Infra-Red Spectrometer (FTIR) and Gas Chromatography-Mass Spectrophotometer (GC-MS) analyses confirmed characteristic bands of glucose as industrially promising with 60% purity. Further, the enzymatic hydrolysis adhered to Michaelis-Menten kinetic model with maximum reaction rate of 82.6 ml/day at 35 °C.</p>

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%