Effect of heat-drying on antioxidant activity of selected fruit peels

Khairusy Syakirah Zulkifli, Noriham Abdullah, Aminah Abdullah, Wan Saidatul Syida Wan Kamarudin, Nurain Aziman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Fruit peels are the major by-product in fruit canned manufacturing and juices processing. The aqueous extracts of fresh and heat-drying peels of Psidium guajava (seed guava), Mangifera indica var. Chakonan (Chakonan mango), Citrus sinensis var. Navel (Navel orange) and Malus sylvestris (Granny Smith apple) were studied for qualitative total phenolic content (TPC) and total flavonoid content (TFC) as well as in-vitro antioxidant activity. Four antioxidant assays including Ferric Reducing Antioxidant Power (FRAP), 2, 2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity, Beta-carotene bleaching and Oxygen Radical Absorbance Capacity (ORAC) were conducted in this study. All fresh extracts possessed significantly higher values in both TPC and TFC compared to the heat-drying extracts except for C. sinensis. They also showed higher antioxidant activity in all assays. Among the fruit peels, M. indica extract exhibited the strongest antioxidant activity. There were strong correlations between all antioxidant assays with TPC but weak correlations with TFC. Overall, this study provides supportive evidence for the superiority of M. indica peel as an excellent source of natural antioxidant and the consequence of heat-drying on their biological activities.

Original languageEnglish
Title of host publicationCHUSER 2012 - 2012 IEEE Colloquium on Humanities, Science and Engineering Research
Pages129-134
Number of pages6
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 IEEE Colloquium on Humanities, Science and Engineering Research, CHUSER 2012 - Kota Kinabalu, Sabah
Duration: 3 Dec 20124 Dec 2012

Other

Other2012 IEEE Colloquium on Humanities, Science and Engineering Research, CHUSER 2012
CityKota Kinabalu, Sabah
Period3/12/124/12/12

Fingerprint

Heat
Fruit
Drying
Oxygen
Bleaching
Superiority
Scavenging
Manufacturing

Keywords

  • antioxidant
  • aqueous extract
  • Fruit peels
  • heat-drying
  • secondary metabolites

ASJC Scopus subject areas

  • Archaeology

Cite this

Zulkifli, K. S., Abdullah, N., Abdullah, A., Kamarudin, W. S. S. W., & Aziman, N. (2012). Effect of heat-drying on antioxidant activity of selected fruit peels. In CHUSER 2012 - 2012 IEEE Colloquium on Humanities, Science and Engineering Research (pp. 129-134). [6504296] https://doi.org/10.1109/CHUSER.2012.6504296

Effect of heat-drying on antioxidant activity of selected fruit peels. / Zulkifli, Khairusy Syakirah; Abdullah, Noriham; Abdullah, Aminah; Kamarudin, Wan Saidatul Syida Wan; Aziman, Nurain.

CHUSER 2012 - 2012 IEEE Colloquium on Humanities, Science and Engineering Research. 2012. p. 129-134 6504296.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zulkifli, KS, Abdullah, N, Abdullah, A, Kamarudin, WSSW & Aziman, N 2012, Effect of heat-drying on antioxidant activity of selected fruit peels. in CHUSER 2012 - 2012 IEEE Colloquium on Humanities, Science and Engineering Research., 6504296, pp. 129-134, 2012 IEEE Colloquium on Humanities, Science and Engineering Research, CHUSER 2012, Kota Kinabalu, Sabah, 3/12/12. https://doi.org/10.1109/CHUSER.2012.6504296
Zulkifli KS, Abdullah N, Abdullah A, Kamarudin WSSW, Aziman N. Effect of heat-drying on antioxidant activity of selected fruit peels. In CHUSER 2012 - 2012 IEEE Colloquium on Humanities, Science and Engineering Research. 2012. p. 129-134. 6504296 https://doi.org/10.1109/CHUSER.2012.6504296
Zulkifli, Khairusy Syakirah ; Abdullah, Noriham ; Abdullah, Aminah ; Kamarudin, Wan Saidatul Syida Wan ; Aziman, Nurain. / Effect of heat-drying on antioxidant activity of selected fruit peels. CHUSER 2012 - 2012 IEEE Colloquium on Humanities, Science and Engineering Research. 2012. pp. 129-134
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