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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(8): 4871-4885
DOI: https://doi.org/10.20546/ijcmas.2018.708.513


Some Physicochemical and Functional Properties of Lemon and Orange Peels
Hayam M. Ibrahim* and Ahmed A. M. Hamed
Food Technology Department, National Research Center, Dokki, Cairo, Egypt
*Corresponding author
Abstract:

This study aimed to evaluate some physicochemical and functional properties as well analyze phenolic acids profiles & functional groups of raw and microwave or air-oven dried orange and lemon peels (OP&LP) for potential use as functional ingredients sources for food enrichment. Fresh LP had high %s of moisture, protein, ether extract, fiber and ash than OP. After drying, LP had less ether extract% compared to OP. Ash and fiber contents of LP had more %s compared to OP dried by microwave or air oven. Total dietary fiber content in fresh OP was of less % than LP. Dried LPs using both drying methods were of high total dietary fiber % than that in OPs. Fresh LPs contain more insoluble dietary fiber than OPs. Microwave dried LP and OP had more insoluble dietary fiber than air-oven dried ones. Furthermore fresh and dried OP samples contain more soluble dietary fiber than the LPs. Total flavonoids content of methanolic OP & LP extracts was higher than those of ethanolic extracts. HPLC analysis showed that naringin and hesperidin were the predominant phenolic acids in the tested samples with different concentrations. FTIR spectroscopy analysis was also recorded (400-4000 wave number cm-1). OPs dried by air oven had highest water and oil holding capacities.


Keywords: Lemon and orange peels, Proximate chemical composition, Dietary fiber, Total flavonoids, Phenolic acids profiles, Functional groups analysis, Water and oil holding capacities
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How to cite this article:

Hayam M. Ibrahim and Ahmed A. M. Hamed. 2018. Some Physicochemical and Functional Properties of Lemon and Orange Peels.Int.J.Curr.Microbiol.App.Sci. 7(8): 4871-4885. doi: https://doi.org/10.20546/ijcmas.2018.708.513