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Predictive Modeling Coupled with Multiple Optimization Techniques for Assessing the Effect of Various Process Parameters on Oil and Pectin Extraction from Watermelon Rind

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Abstract

This study combines artificial neural network (ANN) with a novel metaheuristic technique, satin bowerbird optimizer (SBO) for predicting oil, and pectin yield from watermelon rind. The experimental design was based on two-level factors, drying temperature (°C) and heating time (hours) for oil yield (%) and three-level factors, drying temperature (°C), extraction time (min), and pH for pectin yield (%) using response surface methodology (RSM). The RSM and SBO optimization resulted oil yield of 17.7–26.6% at conditions of drying temperature (90–100°C), and heating time (8.7–9 h), while pectin yield is between 21 and 37.6% at extraction temperature (80–100), extraction time (46.3–60 min), and pH (1–3). However, ANN predicted more accurately than the RSM model, with a lower percentage relative error. It was observed that pH and extraction time are pertinent process parameters for predicting pectin yield. Similarly, drying temperature is significant for oil extraction from watermelon.

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Availability of Data and Material

All data generated or analyzed during this study are included in this article and its additional files. The experimental values of response surface methodology (RSM) design as well as the artificial neural networks (ANN) data used are contained in an Excel File. Requests for material should be made to the corresponding author.

Abbreviations

W:

weight of sample (g)

P:

amount of dry pectin (g)

RSM:

response surface optimization

ANN:

artificial neural network

SBO:

satin bower optimizer

SBBOA:

satin bower bird optimization algorithm

RMSE:

root mean square error

MAPE:

mean absolute percent error

MSE:

mean square error

CCRD:

central composite rotatable design

2FI:

two factorial interaction

k :

number of independent variables

h :

layer

out :

output

i :

initial

1 :

empty flask

2 :

flask and extracted oil

n:

number of repetition of experiments

V:

vector network input

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Correspondence to Ibiba Taiwo Horsfall.

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Olatunji, O.M., Itam, D.H., Akpan, G.E. et al. Predictive Modeling Coupled with Multiple Optimization Techniques for Assessing the Effect of Various Process Parameters on Oil and Pectin Extraction from Watermelon Rind. Process Integr Optim Sustain 6, 765–779 (2022). https://doi.org/10.1007/s41660-022-00248-0

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