Physicochemical Properties And Enzyme Activity Of Polyphenol Oxidase And Peroxidase From Fresh Pomelo (Citrus Maxima) Juice

Simple item page
dc.contributor.authorMior Azman, Nur Thaherah Binti
dc.date.accessioned2020-09-22T01:34:19Z
dc.date.available2020-09-22T01:34:19Z
dc.date.issued2020-07
dc.description.abstractPomelo (Citrus maxima) is a native of Southeast Asia and has the potential of being commercialized in form of fruit juice. A study of physicochemical properties of fresh pomelo juice was determined its pH, titratable acidity, total soluble solids, total phenolic content, and vitamin C content in order to obtain useful information in food industries. The pomelo juice fulfilled the requirement as stated in the Food Regulation 1985, Regulation 237 with 9.83 ± 0.12 °Brix which represented the sweetness of the fruit. The pH of pomelo juice was recorded to be 6.24 ± 0.01 which considered as less acidic food with low (0.09 ± 0.01%) titratable acidity value. Furthermore, pomelo juice has the potential to be commercialized as thirst quenching fruit juice due to a considerable amount of total phenolic content and vitamin C 90.09 ± 6.74 mg GAE/100 g and 65.59 ± 2.00 mg/100 mL. The peroxidase (POD) was observed to be present and actively higher than polyphenol oxidase (PPO) whereby the activity of enzyme cannot be detected at pH 6.0 and temperature 25 °C with some modifications on the sample volume thus, POD was found to be useful in this study. The activity of POD was found to be optimum at pH 5.5 and pH 6.0 while the optimum temperature was observed at 60 °C and 70 °C. Hence, pomelo juice is suggested to undergo low temperature long time or LTLT in food industries because high thermal treatment can promote the activity of POD in pomelo juiceen_US
dc.identifier.urihttp://hdl.handle.net/123456789/10237
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectPolyphenol Oxidaseen_US
dc.subjectFresh Pomeloen_US
dc.titlePhysicochemical Properties And Enzyme Activity Of Polyphenol Oxidase And Peroxidase From Fresh Pomelo (Citrus Maxima) Juiceen_US
dc.typeOtheren_US
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Pusat Pengajian Teknologi Industri - Monograf