PHYSICOCHEMICAL PROPERTIES AND SENSORY EVALUATION OF MIXED FRUIT JUICE (ORANGE, WATERMELON AND TANGERINE) USING DATE SYRUP AS A SWEETENER.


Chinyere Nkem Onyekwelu

Abstract


Objective

The main objective of this study was to evaluate physicochemical and sensory properties of mixed fruit juice produced from blends of orange, watermelon and tangerine using date fruit syrup as a sweetener.

Methods

Sweet orange and tangerine were sorted, peeled, squeezed to extract juice and sieved  while watermelon was washed, peeled deseeded, blended and sieved to obtained watermelon juice. The orange, tangerine and watermelon juice were blended in ratios of 50:25:25, 25:50:25, 25:25:50 and 33.33:33.33:33.33 v/v orange: watermelon: tangerine designated as O50WT, OW50T, OWT50 and OWT respectively. Twenty milliliters (20ml) of date fruit syrup was added into different proportion of mixed fruit juice pasteurized at 85oC for 15min and filled into bottle. Samples were evaluated for physicochemical properties and consumer’s acceptability.

Results

Addition of date fruit syrup significantly increased pH from 4.05 to 4.15, total soluble solid 9.50 to 10.50oBrix, vitamin C 1.46 to1.79mg/100g and calcium from 2.55 to 4.77 mg/100g. Sensory evaluation revealed that sample O50WT50% orange, 25% watermelon and 25% tangerine) was the most preferred in term of flavor (6.40), taste (7.40) and overall acceptability (7.40) while sample OWT was least accepted.

Conclusion

It is concluded that addition of date fruit syrup in mixed fruit juice improved the quality and sensory attributes of mixed fruit juice.

Keywords mixed fruit juice, date fruit syrup, physicochemical properties, sensory attributes


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About this article

Title

PHYSICOCHEMICAL PROPERTIES AND SENSORY EVALUATION OF MIXED FRUIT JUICE (ORANGE, WATERMELON AND TANGERINE) USING DATE SYRUP AS A SWEETENER.

Date

01-01-2017

Additional Links

Manuscript Submission

Journal

Innovare Journal of Food Sciences
Vol 5 Issue 1 2017 (Jan-Feb) Page: 1-4

Statistics

215 Views | 304 Downloads

Authors & Affiliations

Chinyere Nkem Onyekwelu
Federal Polytechnic Oko
Nigeria


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