159750

STEROLS COMPOSITION OF SOME OLIVE OIL VARIETIES CULTIVATED UNDER EGYPTIAN CONDITIONS

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Last updated: 04 Jan 2025

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Abstract

The sterol composition of some Egyptian olive oils (Coratina, Arbequina, Koroneiki and Siwi were analyzed during season (2010– 2011), to obtain a more complete characterization of these varietal oils. More than nine compounds were identified and characterized. As expected for virgin olive oil (VOOs), the main sterols found in all VOOs were -sitosterol, 5-avenasterol, campesterol and stigmasterol. Cholesterol, clerosterol, sitostanol, 5,24- stigmastadienol, and 7-avenasterol were also found in lower amounts for all VOOs . The majority of the Egyptian virgin olive oils analyzed comply with the using EC Regulation No. 2568, except for Arbequina VOO. Total sterol amounts were higher than the minimum limit set by legislation, ranging from 1562.32 to 2550.62 mg/kg. Coratina VOO showed the highest contents of -sitosterol (84.24 %) while, Siwi VOO showed the highest 5 avenasterol (8.66 %). Arbequina VOO had the lowest content of -sitosterol (50.63%) and 5 avenasterol (4.75%). Quality characteristics (acidity, peroxide value, K232, K270, K,), chemical data (Total phenols, oxidative stability, fatty-acid composition, and sterol composition) were also studied. The obtained results were compared with International Olive Oil Standards. The total phenol content ranged from 105.07 to 195.17 mg/kg, showing the highest values for Coratina and Koroneiki VOOs. Arbequina VOO presented the highest deviations from the IOC in fatty acids and sterol percentages, so that Arbequina virgin olive oil stood out of IOC and EU limits.

DOI

10.21608/ejar.2012.159750

Keywords

Sterols composition, olive oils, Coratina, Arbequina, Koroneiki, Siwi cultivars

Authors

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MOUNER M.

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Affiliation

Oils and Fats Department, Food Technology Research Institute, Agricultural Research Center, Giza, Egypt.

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First Name

MOHAMED E.

Last Name

ELSORADY

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Affiliation

Oils and Fats Department, Food Technology Research Institute, Agricultural Research Center, Giza, Egypt.

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Volume

90

Article Issue

1

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23311

Issue Date

2012-03-01

Receive Date

2011-10-02

Publish Date

2012-01-10

Page Start

263

Page End

276

Print ISSN

1110-6336

Online ISSN

2812-4936

Link

https://ejar.journals.ekb.eg/article_159750.html

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https://ejar.journals.ekb.eg/service?article_code=159750

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18

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Original Article

Type Code

1,041

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Journal

Publication Title

Egyptian Journal of Agricultural Research

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https://ejar.journals.ekb.eg/

MainTitle

STEROLS COMPOSITION OF SOME OLIVE OIL VARIETIES CULTIVATED UNDER EGYPTIAN CONDITIONS

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Article

Created At

22 Jan 2023