Johari, Johari (2025) Evaluation of nutritional properties and sensory acceptance of commercially available orange juices in Kota Bharu, Kelantan. Project Report. Universiti Sains Malaysia. (Submitted)
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Abstract
Orange juice is well-known for its nutritional benefits and has been a popular fruit juice choice worldwide. However, information on the nutritional content and sensory acceptance of commercial orange juices in the Malaysian context is limited. This study aimed to evaluate the sugar, vitamin C, calcium, magnesium, potassium and sensory acceptance of five different brands of orange juice (samples A, B, C, D and E) available in Kota Bharu. Five orange juice samples were analysed for their nutritional properties using enzymatic method for sugars, indophenol titration method for vitamin C and atomic absorption spectrophotometry (AAS) for minerals. Results of nutritional properties obtained showed the following range of values for total sugars (7.94 – 11.00 mg/100 mL), glucose (2.24 – 5.93 mg/100 mL), fructose (2.35 – 3.67 g/100 mL), sucrose (1.86 – 6.40 g/100 mL), vitamin C (0.16 – 1.41 mg/100 mL), calcium (0.30 – 0.68 mg/100 mL), magnesium (1.10 – 2.20 mg/100 mL) and potassium (11.65 – 19.70 mg/100 mL). The sugars, vitamin C and mineral contents varied among the different orange juice samples. Sample A had the highest magnesium (2.20 mg/100 mL) and potassium (19.70 mg/100 mL) content while sample C had the highest total sugar content (11.00 mg/100 mL). Next, sample D had the highest calcium content (0.68 mg/100 mL) while sample E had the highest vitamin C (1.41 mg/100 mL). For sensory acceptance, five samples were subjected to sensory evaluation, in which the samples were rated using a 7-point hedonic scale. Sample B had the most overall acceptability (6.18) while sample E had the least (3.12). In general, commercial orange juice is a fair source of natural sugars, vitamins and minerals and should be supplemented in the diet for its health benefits.
| Item Type: | Monograph (Project Report) |
|---|---|
| Uncontrolled Keywords: | Orange juice |
| Subjects: | R Medicine R Medicine > RA Public aspects of medicine > RA440-440.87 Study and teaching. Research |
| Divisions: | Kampus Kesihatan (Health Campus) > Pusat Pengajian Sains Kesihatan (School of Health Sciences) > Monograph |
| Depositing User: | Mr Abdul Hadi Mohammad |
| Date Deposited: | 13 Jan 2026 07:02 |
| Last Modified: | 22 Feb 2026 07:10 |
| URI: | http://eprints.usm.my/id/eprint/63450 |
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