Bioprocessing of coconuts for value added product development

Aduja, Naik (2014) Bioprocessing of coconuts for value added product development. PhD thesis, University of Mysore.

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Abstract

The coconut palm alone is said to be sufficient to build, rig and freight a ship with food, water, oil, vinegar, sugar and other commodities. The research work for the thesis entitled “Bioprocessing of coconuts for value added product development” deals with diversification and value addition to coconut products such as virgin coconut oil, coconut milk and coconut protein powder. Tray drying was found to be most suitable in moisture removal from fresh coconut gratings for the production of virgin coconut oil. The optimum moisture content of fresh coconut gratings for expelling virgin coconut oil was determined and found to be in the range of 2 – 5% (w/w). Enzyme assisted extraction of oil from copra gratings was found to yield higher quantity of oil using hydraulic press. Stabilization studies of coconut milk were carried out using silica nanoparticles and compared to that with conventional additives. High stability with added advantage of low viscosity enables silica nanoparticles to be a potential coconut milk stabilizer. An improved enzymatic process was developed for the production of virgin coconut oil which consists of only a single centrifugation step without the need of overnight cold storage. Membrane filtration and dehydration methods were optimized to convert coconut skim milk, which is generally discarded as waste, into coconut skim milk powder, a product with good sensory and functional properties. A value added product namely, coconut protein powder was recovered from coconut wet processing waste with high protein content. Storage studies of coconut protein powder indicated that its shelf life was about 6 months under ambient conditions (27 ± 1°C, 65% RH) when metalized polyester is used as the packaging material.

Item Type:	Thesis (PhD)
Uncontrolled Keywords:	value addition, coconut, coconut products
Subjects:	600 Technology > 08 Food technology > 18 Processed foods 600 Technology > 08 Food technology > 33 Nuts > 01 Coconut
Divisions:	Food Engineering
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	18 May 2016 08:11
Last Modified:	18 May 2016 08:11
URI:	http://ir.cftri.res.in/id/eprint/12159

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