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EXTRACTION OF ANTIOXIDANT COMPOUNDS FROM RED PITAYA USING SOXHLET EXTRACTION METHOD - page 16 / 24

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osteoporosis and heart disease. Antioxidants also can help rid off these free radicals from our body (http://oregonstate.edu).

From the early discovery based on red pitaya, it is worth to extract the antioxidant from dragon fruit that is very useful for human health in term of avoiding the side effect of using synthetic antioxidants. In addition, antioxidants have many industrial uses, such as preservatives in food and cosmetics and also preventing the degradation of rubber and gasoline. With high antioxidant compound and the feasible market price; that is why dragon fruit is the choosen material for this research. However this research is just a preliminary step before it become commercialize.

1.3

Statement of Objective

The main objective of this research is to extract the Vitamin C from red pitaya using Soxhlet extraction method.

1.4

Scope of Study

In order to achieve the objectives, there are few scopes of work that have been identified as follows:

  • i.

    Study the effect of different drying temperature on extraction yield using oven at temperature 350C, 500C, 600C and 70 0C.

  • ii.

    Investigate the effect of different solvents using methanol, ethanol, n- hexane and toluene on extraction yields.

  • iii.

    Examine the effect of different solid to solvent ratios which are 5g:400 mL, 10g:400 mL, 15g:400 mL and 20g:400 mL to extraction yields

  • iv.

    Establish the suitable operating parameter for extraction of Vitamin C from red pitaya using Soxhlet extraction.

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