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\hypersetup{pdftitle={Development of a Chopping"=extracting Machine for Pineapple Fruit Juice Extraction in the Rural Communities},pdfauthor={Adesoji Olaniyan},pdfsubject={Tropentag 2010: Abstract},pdfkeywords={Construction, design, extraction, juice, machine, pineapple},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 14-16, 2010, Zurich}}\\[1ex] \Large{``World Food System  ---\\A Contribution from Europe''\\[2ex]}}
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\Large{\textbf{Development of a Chopping"=extracting Machine for Pineapple Fruit Juice Extraction in the Rural Communities\footnote{\textbf{Contact Address:} Adesoji Olaniyan, University of Ilorin, Department of Agricultural and Biosystems Engineering, 54 Old Bungalow, Senior Staff Quarters, University of Ilorin, 240003~Ilorin, Nigeria, \mbox{e-mail}: \email{amolan397@hotmail.com}}\\[0.8ex]}}
\normalsize{\textsc{Adesoji Olaniyan}}
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\item[]{\small{\textit{University of Ilorin, Department of Agricultural and Biosystems Engineering, Nigeria}}}
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\index[author]{Olaniyan, Adesoji}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
A chopping"=extracting machine was designed, constructed and tested for small scale pineapple fruit (\textit{Ananas comosus}) juice extraction in the rural communities. While in designing and in material selection, consideration was given to the techno"=economic status of the micro and small scale fruit juice processors who are the intended users of the machine. The major components of the machine included hopper, chopping unit, extraction unit, juice outlet, waste outlet, frame, prime mover (electric motor) and motor stand. The chopping unit consists of a shaft with spirally attached spikes which chop whole pineapple fruit into smaller pieces and convey the chopped product to the position where it enters the extraction unit through a lower hopper. The extraction chamber houses a worm shaft which conveys, crushes, grinds and presses the product from the chopping unit. The juice extracted is drained through the juice channel into the juice outlet from where it is collected while the residual waste is collected at the waste outlet. The machine was tested using freshly harvested whole pineapple fruits and result revealed a juice yield, extraction efficiency and extraction loss of \mbox{69.47\,\%}, \mbox{72.42\,\%} and \mbox{11.95\,\%} respectively. Powered by a 2 hp single"=phase electric motor, the machine has a production cost of \$600 with the construction materials being locally available at affordable costs. A cottage pineapple juice extraction plant based on this technology can provide employment for at least two persons at the same time providing fresh juice at low costs and residual waste as an ingredient for livestock feed manufacturing}

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\noindent \textbf{Keywords:} Construction, design, extraction, juice, machine, pineapple
\index[key]{Construction}
\index[key]{Design}
\index[key]{Extraction}
\index[key]{Juice}
\index[key]{Machine}
\index[key]{Pineapple!yield}
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